├── .gitignore ├── .idea ├── gradle.xml ├── misc.xml ├── modules.xml ├── runConfigurations.xml └── vcs.xml ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── clutch │ │ └── student │ │ └── ExampleInstrumentedTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── clutch │ │ │ └── student │ │ │ ├── Adapter │ │ │ ├── CourseAdapter.java │ │ │ ├── CourseSecAdapter.java │ │ │ ├── ScoreAdapter.java │ │ │ ├── StudentAdapter.java │ │ │ └── ViewPagerAdapter.java │ │ │ ├── AddCourseActivity.java │ │ │ ├── Dao │ │ │ ├── CourseDao.java │ │ │ ├── MyDatabaseHelper.java │ │ │ ├── ScoreDao.java │ │ │ ├── StudentDao.java │ │ │ └── UserDao.java │ │ │ ├── EditCheck.java │ │ │ ├── Entity │ │ │ ├── Course.java │ │ │ ├── CourseSec.java │ │ │ ├── Score.java │ │ │ ├── Student.java │ │ │ ├── Student_info.java │ │ │ └── User.java │ │ │ ├── Fragment │ │ │ ├── FirstFragment.java │ │ │ ├── ManagerFirstFragment.java │ │ │ ├── ManagerSecondFragment.java │ │ │ ├── ManagerThirdFragment.java │ │ │ ├── SecondFragment.java │ │ │ └── ThirdFragment.java │ │ │ ├── LoginActivity.java │ │ │ ├── MainActivity.java │ │ │ ├── ModifyPasswdActivity.java │ │ │ ├── MyApplication.java │ │ │ └── StudentChangeActivity.java │ └── res │ │ ├── drawable-hdpi │ │ ├── ic_call.png │ │ ├── ic_chat.png │ │ └── ic_contact.png │ │ ├── drawable-v24 │ │ └── ic_launcher_foreground.xml │ │ ├── drawable │ │ ├── age.png │ │ ├── background.jpg │ │ ├── bottom_navigation_color_selector.xml │ │ ├── chemistry.png │ │ ├── chinese.png │ │ ├── english.png │ │ ├── geography.png │ │ ├── health.png │ │ ├── history.png │ │ ├── ic_launcher_background.xml │ │ ├── id.png │ │ ├── math.png │ │ ├── name.png │ │ ├── origin.png │ │ ├── phone.png │ │ ├── physic.png │ │ ├── sex.png │ │ └── sport.png │ │ ├── layout │ │ ├── activity_add_course.xml │ │ ├── activity_login.xml │ │ ├── activity_main.xml │ │ ├── activity_modify_passwd.xml │ │ ├── activity_student_change.xml │ │ ├── course_item.xml │ │ ├── fragment_first.xml │ │ ├── fragment_manager_first.xml │ │ ├── fragment_manager_second.xml │ │ ├── fragment_manager_third.xml │ │ ├── fragment_second.xml │ │ ├── fragment_third.xml │ │ └── student_item.xml │ │ ├── menu │ │ ├── main.xml │ │ └── menu_bottom_navigation.xml │ │ ├── mipmap-anydpi-v26 │ │ ├── ic_launcher.xml │ │ └── ic_launcher_round.xml │ │ ├── mipmap-hdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-mdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xhdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxhdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxxhdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── values-w820dp │ │ └── dimens.xml │ │ └── values │ │ ├── colors.xml │ │ ├── dimens.xml │ │ ├── strings.xml │ │ └── styles.xml │ └── test │ └── java │ └── com │ └── clutch │ └── student │ └── ExampleUnitTest.java ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/workspace.xml 5 | /.idea/libraries 6 | .DS_Store 7 | /build 8 | /captures 9 | .externalNativeBuild 10 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 17 | 18 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 16 | 26 | 27 | 28 | 29 | 30 | 31 | 33 | 34 | 35 | 36 | 37 | Android API 26 Platform 38 | 39 | 44 | 45 | 46 | 47 | 48 | 49 | -------------------------------------------------------------------------------- /.idea/modules.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | -------------------------------------------------------------------------------- /.idea/runConfigurations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | -------------------------------------------------------------------------------- /.idea/vcs.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Android 学生选课系统 2 | ## 概述 3 |   此程序是功能为学生选课系统的Android App,功能涵盖了： 4 |   学生和管理员以账号密码的形式登录系统，进入系统分别对应各自的功能。 5 |   学生查看课表，课程成绩，进行选课，修改个人信息。 6 |   管理员添加删除课程，修改学生成绩，添加学生信息。 7 | ## 数据库 8 | ![ER图](https://raw.githubusercontent.com/clutchyu/MarkDownPhotos/master/ER.png) 9 |   共四个表：学生信息表 student ,课程信息表 course ,成绩表 score ,登录表 log。 10 | score表中course_id和student_id为联合主键，分别与对应course表和student表中的course_id和id组成外键。 11 | ## 程序功能 12 | ### 登录 13 |   实现在数据库中存入了一些数据，其中，登陆表log中管理员所对应的账号为0，密码为000000。只有此账号能登入管理员对应的界面。学生以学号为账号，初始密码默认为123456，可登入学生对应界面。 14 | ![登录](https://raw.githubusercontent.com/clutchyu/MarkDownPhotos/master/%E7%99%BB%E5%BD%95.jpg) 15 | ### 学生界面 16 |   以账号10001，密码123456登入系统，进入此学生界面。 17 | 主界面可滑动，三个滑动界面对应三个功能，查看课表，选课，修改个人信息。 18 | ![学生](https://raw.githubusercontent.com/clutchyu/MarkDownPhotos/master/%E8%AF%BE%E8%A1%A8.jpg) 19 | ### 管理员界面 20 | ![管理](https://raw.githubusercontent.com/clutchyu/MarkDownPhotos/master/%E7%AE%A1%E7%90%86%E5%91%98.jpg) 21 | ### 程序特色 22 |   界面采用 BottomNavigationView + ViewPager + Fragment 实现功能界面的左右滑动，用RecylerView 组件展示课程信息，其中在界面中刷新数据成为技术难点。程序中自己在要更新的界面写了更新方法，在提交界面点击按钮提交信息后，调用该方法，重新查询数据显示到相应的界面中。 23 |   程序中的主要思路为界面与数据操控逻辑分离，显示信息时将调用Dao 中对应的类查询到所需信息传入 Adapter 包中对应的适配器中，设置好适配器后，将适配器用于对应组件中，在传入对应界面实现显示。 24 |   输入信息时将采集到的信息传入 Dao 包中的对应的类，进行数据库操作，将操作是否成功以 boolean 类型返回到相应适配器，再传入对应界面给出相应提示，并实现数据刷新 25 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 26 5 | defaultConfig { 6 | applicationId "com.clutch.student" 7 | minSdkVersion 15 8 | targetSdkVersion 26 9 | versionCode 1 10 | versionName "1.0" 11 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 12 | } 13 | buildTypes { 14 | release { 15 | minifyEnabled false 16 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 17 | } 18 | } 19 | } 20 | 21 | dependencies { 22 | implementation fileTree(dir: 'libs', include: ['*.jar']) 23 | implementation 'com.android.support:appcompat-v7:26.1.0' 24 | testImplementation 'junit:junit:4.12' 25 | androidTestImplementation 'com.android.support.test:runner:1.0.1' 26 | androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1' 27 | implementation 'com.android.support:recyclerview-v7:26.1.0' 28 | compile 'com.android.support:design:26.1.0' 29 | compile 'com.facebook.stetho:stetho:1.5.0' 30 | implementation 'com.android.support.constraint:constraint-layout:1.0.2' 31 | } 32 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile 22 | -------------------------------------------------------------------------------- /app/src/androidTest/java/com/clutch/student/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student; 2 | 3 | import android.content.Context; 4 | import android.support.test.InstrumentationRegistry; 5 | import android.support.test.runner.AndroidJUnit4; 6 | 7 | import org.junit.Test; 8 | import org.junit.runner.RunWith; 9 | 10 | import static org.junit.Assert.*; 11 | 12 | /** 13 | * Instrumented test, which will execute on an Android device. 14 | * 15 | * @see Testing documentation 16 | */ 17 | @RunWith(AndroidJUnit4.class) 18 | public class ExampleInstrumentedTest { 19 | @Test 20 | public void useAppContext() throws Exception { 21 | // Context of the app under test. 22 | Context appContext = InstrumentationRegistry.getTargetContext(); 23 | 24 | assertEquals("com.clutch.student", appContext.getPackageName()); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 17 | 18 | 19 | android:label="修改个人信息" 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | android:label="修改课程信息" 30 | 31 | 32 | 33 | 34 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Adapter/CourseAdapter.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Adapter; 2 | 3 | /** 4 | * Created by clutchyu on 2018/3/17. 5 | */ 6 | 7 | import android.support.v7.widget.RecyclerView; 8 | import android.view.LayoutInflater; 9 | import android.view.View; 10 | import android.view.ViewGroup; 11 | import android.widget.ImageView; 12 | import android.widget.TextView; 13 | import android.widget.Toast; 14 | import com.clutch.student.Entity.Course; 15 | import java.util.List; 16 | import com.clutch.student.Dao.CourseDao; 17 | import com.clutch.student.R; 18 | 19 | /** 20 | *课程类适配器，将课程信息展示在CourseFragment上 21 | * 管理员查看所有课程信息 22 | */ 23 | public class CourseAdapter extends RecyclerView.Adapter{ 24 | 25 | private List mCourseList; 26 | 27 | static class ViewHolder extends RecyclerView.ViewHolder { 28 | View CourseView; 29 | ImageView CourseImage; 30 | TextView CourseName; 31 | 32 | public ViewHolder(View view) { 33 | super(view); 34 | CourseView = view; 35 | CourseImage = (ImageView) view.findViewById(R.id.Course_image); 36 | CourseName = (TextView) view.findViewById(R.id.Course_name); 37 | } 38 | } 39 | 40 | public CourseAdapter(List courseList) { 41 | mCourseList=courseList; 42 | } 43 | 44 | @Override 45 | /** 46 | * 点击对应部分显示toast 47 | */ 48 | public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 49 | View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.course_item, parent, false); 50 | final ViewHolder holder = new ViewHolder(view); 51 | holder.CourseView.setOnClickListener(new View.OnClickListener() { 52 | @Override 53 | public void onClick(View v) { 54 | int position = holder.getAdapterPosition(); 55 | Course course = mCourseList.get(position); 56 | Toast.makeText(v.getContext(), "you clicked view " + course.getName(), Toast.LENGTH_SHORT).show(); 57 | } 58 | }); 59 | holder.CourseImage.setOnClickListener(new View.OnClickListener() { 60 | @Override 61 | public void onClick(View v) { 62 | int position = holder.getAdapterPosition(); 63 | Course course = mCourseList.get(position); 64 | Toast.makeText(v.getContext(), "you clicked image " + course.getName(), Toast.LENGTH_SHORT).show(); 65 | } 66 | }); 67 | return holder; 68 | } 69 | 70 | @Override 71 | /** 72 | * 将课程信息显示在textView上 73 | */ 74 | public void onBindViewHolder(ViewHolder holder, int position) { 75 | Course course = mCourseList.get(position); 76 | holder.CourseImage.setImageResource(course.getImageId()); 77 | holder.CourseName.setText("课程号："+course.getId()+" "+course.getName()+"\n学分："+course.getCredit()); 78 | } 79 | 80 | @Override 81 | public int getItemCount() { 82 | return mCourseList.size(); 83 | } 84 | 85 | } -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Adapter/CourseSecAdapter.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Adapter; 2 | 3 | /** 4 | * Created by clutchyu on 2018/3/22. 5 | */ 6 | 7 | import android.support.v7.widget.RecyclerView; 8 | import android.view.LayoutInflater; 9 | import android.view.View; 10 | import android.view.ViewGroup; 11 | import android.widget.ImageView; 12 | import android.widget.TextView; 13 | import com.clutch.student.Entity.CourseSec; 14 | import java.util.List; 15 | import com.clutch.student.R; 16 | 17 | /** 18 | *课程类适配器，将课程信息展示在CourseSecFragment上 19 | * 管理员查看所有课程信息 20 | */ 21 | public class CourseSecAdapter extends RecyclerView.Adapter{ 22 | 23 | private List mCourseSecList; 24 | 25 | 26 | static class ViewHolder extends RecyclerView.ViewHolder { 27 | View CourseSecView; 28 | ImageView CourseSecImage; 29 | TextView CourseSecName; 30 | 31 | public ViewHolder(View view) { 32 | super(view); 33 | CourseSecView = view; 34 | CourseSecImage = (ImageView) view.findViewById(R.id.Course_image); 35 | CourseSecName = (TextView) view.findViewById(R.id.Course_name); 36 | } 37 | } 38 | 39 | public CourseSecAdapter(List CourseSecList) { 40 | mCourseSecList=CourseSecList; 41 | } 42 | public void changeAdapter(List CourseSecList){ 43 | mCourseSecList=CourseSecList; 44 | } 45 | 46 | @Override 47 | /** 48 | * 点击对应部分显示toast 49 | */ 50 | public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 51 | View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.course_item, parent, false); 52 | final ViewHolder holder = new ViewHolder(view); 53 | holder.CourseSecView.setOnClickListener(new View.OnClickListener() { 54 | @Override 55 | public void onClick(View v) { 56 | int position = holder.getAdapterPosition(); 57 | CourseSec CourseSec = mCourseSecList.get(position); 58 | } 59 | }); 60 | holder.CourseSecImage.setOnClickListener(new View.OnClickListener() { 61 | @Override 62 | public void onClick(View v) { 63 | int position = holder.getAdapterPosition(); 64 | CourseSec CourseSec = mCourseSecList.get(position); 65 | } 66 | }); 67 | return holder; 68 | } 69 | 70 | @Override 71 | /** 72 | * 将课程信息显示在textView上 73 | */ 74 | public void onBindViewHolder(ViewHolder holder, int position) { 75 | CourseSec CourseSec = mCourseSecList.get(position); 76 | holder.CourseSecImage.setImageResource(CourseSec.getImageId()); 77 | holder.CourseSecName.setText("学号： "+CourseSec.getCourse_id()+" "+CourseSec.getCourse_name()+"\n学分："+CourseSec.getCredit()+"\n成绩："+CourseSec.getGrade()); 78 | } 79 | 80 | @Override 81 | public int getItemCount() { 82 | return mCourseSecList.size(); 83 | } 84 | 85 | } -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Adapter/ScoreAdapter.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Adapter; 2 | 3 | /** 4 | * Created by clutchyu on 2018/3/26. 5 | * 显示学生未选课的信息，显示到SecondFragment中 6 | */ 7 | import android.content.Context; 8 | import android.support.v7.widget.RecyclerView; 9 | import android.view.LayoutInflater; 10 | import android.view.View; 11 | import android.view.ViewGroup; 12 | import android.widget.ImageView; 13 | import android.widget.TextView; 14 | import android.widget.Toast; 15 | 16 | import com.clutch.student.Dao.ScoreDao; 17 | import com.clutch.student.Entity.Course; 18 | import java.util.List; 19 | 20 | import com.clutch.student.Fragment.FirstFragment; 21 | import com.clutch.student.Fragment.SecondFragment; 22 | import com.clutch.student.MainActivity; 23 | import com.clutch.student.MyApplication; 24 | import com.clutch.student.R; 25 | 26 | public class ScoreAdapter extends RecyclerView.Adapter{ 27 | Context context = MyApplication.getInstance(); 28 | 29 | private List mCourseList; 30 | private ScoreDao score = new ScoreDao(context); 31 | static class ViewHolder extends RecyclerView.ViewHolder { 32 | View CourseView; 33 | ImageView CourseImage; 34 | TextView CourseName; 35 | 36 | public ViewHolder(View view) { 37 | super(view); 38 | CourseView = view; 39 | CourseImage = (ImageView) view.findViewById(R.id.Course_image); 40 | CourseName = (TextView) view.findViewById(R.id.Course_name); 41 | } 42 | } 43 | public ScoreAdapter(List courseList) { 44 | mCourseList=courseList; 45 | } 46 | public ScoreAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 47 | View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.course_item, parent, false); 48 | final ScoreAdapter.ViewHolder holder = new ScoreAdapter.ViewHolder(view); 49 | holder.CourseView.setOnClickListener(new View.OnClickListener() { 50 | @Override 51 | public void onClick(View v) { 52 | int position = holder.getAdapterPosition(); 53 | Course course = mCourseList.get(position); 54 | score.chooseCourse(MainActivity.getStudentId(),course.getId()); 55 | Toast.makeText(v.getContext(), "选课成功！" , Toast.LENGTH_SHORT).show(); 56 | SecondFragment.updata(); 57 | FirstFragment.update(); 58 | 59 | } 60 | }); 61 | holder.CourseImage.setOnClickListener(new View.OnClickListener() { 62 | @Override 63 | public void onClick(View v) { 64 | int position = holder.getAdapterPosition(); 65 | Course course = mCourseList.get(position); 66 | score.chooseCourse(MainActivity.getStudentId(),course.getId()); 67 | Toast.makeText(v.getContext(), "选课成功！ " , Toast.LENGTH_SHORT).show(); 68 | SecondFragment.updata(); 69 | FirstFragment.update(); 70 | 71 | } 72 | }); 73 | return holder; 74 | } 75 | 76 | 77 | /** 78 | * 将课程信息显示在textView上 79 | */ 80 | public void onBindViewHolder(ScoreAdapter.ViewHolder holder, int position) { 81 | Course course = mCourseList.get(position); 82 | holder.CourseImage.setImageResource(course.getImageId()); 83 | holder.CourseName.setText("课程号："+course.getId()+" "+course.getName()+"\n学分："+course.getCredit()); 84 | } 85 | 86 | @Override 87 | public int getItemCount() { 88 | return mCourseList.size(); 89 | } 90 | 91 | 92 | } 93 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Adapter/StudentAdapter.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Adapter; 2 | 3 | /** 4 | * Created by clutchyu on 2018/3/19. 5 | */ 6 | 7 | 8 | import android.support.v7.widget.RecyclerView; 9 | import android.view.LayoutInflater; 10 | import android.view.View; 11 | import android.view.ViewGroup; 12 | import android.widget.ImageView; 13 | import android.widget.TextView; 14 | import android.widget.Toast; 15 | 16 | import com.clutch.student.Entity.Student; 17 | import com.clutch.student.Entity.Student_info; 18 | import com.clutch.student.R; 19 | 20 | import java.util.List; 21 | 22 | /** 23 | * 学生信息类适配器，将查找到的信息展示在ThirdFragment上 24 | * Student_info类，属性为图片Id，和一个字符串代表student中的各个属性，即每获取一个student对象将其转化成5个该对象，添加到List中。 25 | */ 26 | public class StudentAdapter extends RecyclerView.Adapter{ 27 | 28 | private List mStudentList; 29 | 30 | static class ViewHolder extends RecyclerView.ViewHolder { 31 | View StudentView; 32 | ImageView StudentImage; 33 | TextView StudentText; 34 | 35 | public ViewHolder(View view) { 36 | super(view); 37 | StudentView = view; 38 | StudentImage = (ImageView) view.findViewById(R.id.Student_image); 39 | StudentText = (TextView) view.findViewById(R.id.Student_text); 40 | } 41 | } 42 | 43 | public StudentAdapter(List StudentList) { 44 | mStudentList=StudentList; 45 | } 46 | 47 | @Override 48 | /** 49 | * 点击对应部分显示toast 50 | */ 51 | public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 52 | View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.student_item, parent, false); 53 | final ViewHolder holder = new ViewHolder(view); 54 | holder.StudentView.setOnClickListener(new View.OnClickListener() { 55 | @Override 56 | public void onClick(View v) { 57 | int position = holder.getAdapterPosition(); 58 | Student_info Student = mStudentList.get(position); 59 | } 60 | }); 61 | holder.StudentImage.setOnClickListener(new View.OnClickListener() { 62 | @Override 63 | public void onClick(View v) { 64 | int position = holder.getAdapterPosition(); 65 | Student_info Student = mStudentList.get(position); 66 | } 67 | }); 68 | return holder; 69 | } 70 | 71 | @Override 72 | /** 73 | * 将课程信息显示在textView上 74 | */ 75 | public void onBindViewHolder(ViewHolder holder, int position) { 76 | Student_info Student = mStudentList.get(position); 77 | holder.StudentImage.setImageResource(Student.getImage()); 78 | holder.StudentText.setText(Student.getInfo()); 79 | } 80 | 81 | @Override 82 | public int getItemCount() { 83 | return mStudentList.size(); 84 | } 85 | 86 | } 87 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Adapter/ViewPagerAdapter.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Adapter; 2 | 3 | /** 4 | * Created by clutchyu on 2018/3/17. 5 | */ 6 | 7 | import android.support.v4.app.Fragment; 8 | import android.support.v4.app.FragmentManager; 9 | import android.support.v4.app.FragmentPagerAdapter; 10 | import android.support.v4.app.FragmentTransaction; 11 | import android.view.ViewGroup; 12 | 13 | import com.clutch.student.Fragment.FirstFragment; 14 | import com.clutch.student.Fragment.SecondFragment; 15 | 16 | import java.util.ArrayList; 17 | import java.util.List; 18 | 19 | 20 | 21 | 22 | public class ViewPagerAdapter extends FragmentPagerAdapter { 23 | private List mFragmentList = new ArrayList<>(); 24 | private FragmentManager fm; 25 | public int getItemPosition(Object object) { 26 | 27 | if (object instanceof FirstFragment) { 28 | ((FirstFragment)object).update(); 29 | }else if(object instanceof SecondFragment){ 30 | ((SecondFragment)object).updata(); 31 | } 32 | return super.getItemPosition(object); 33 | } 34 | 35 | public void setFragments(List fragments) { 36 | if (this.mFragmentList != null) { 37 | FragmentTransaction ft = fm.beginTransaction(); 38 | for (Fragment f : this.mFragmentList) { 39 | ft.remove(f); 40 | } 41 | ft.commit(); 42 | ft = null; 43 | fm.executePendingTransactions(); 44 | } 45 | this.mFragmentList = fragments; 46 | notifyDataSetChanged(); 47 | } 48 | public ViewPagerAdapter(FragmentManager manager) { 49 | super(manager); 50 | this.fm = manager; 51 | } 52 | @Override 53 | public Fragment getItem(int position) { 54 | return mFragmentList.get(position); 55 | } 56 | 57 | @Override 58 | public int getCount() { 59 | return mFragmentList.size(); 60 | } 61 | 62 | public void addFragment(Fragment fragment) { 63 | mFragmentList.add(fragment); 64 | } 65 | 66 | 67 | 68 | } 69 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/AddCourseActivity.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student; 2 | 3 | import android.app.AlertDialog; 4 | import android.content.DialogInterface; 5 | import android.content.Intent; 6 | import android.support.v7.app.AppCompatActivity; 7 | import android.os.Bundle; 8 | import android.view.View; 9 | import android.widget.Button; 10 | import android.widget.EditText; 11 | 12 | import com.clutch.student.Dao.CourseDao; 13 | import com.clutch.student.Entity.Course; 14 | 15 | public class AddCourseActivity extends AppCompatActivity { 16 | private EditText idText; 17 | private EditText nameText; 18 | private EditText creditText; 19 | @Override 20 | protected void onCreate(Bundle savedInstanceState) { 21 | super.onCreate(savedInstanceState); 22 | setContentView(R.layout.activity_add_course); 23 | idText = (EditText)findViewById(R.id.studentId); 24 | nameText = (EditText)findViewById(R.id.courseId); 25 | creditText = (EditText)findViewById(R.id.credit); 26 | Button add = (Button)findViewById(R.id.add); 27 | Button delete = (Button)findViewById(R.id.delete); 28 | Button cancel = (Button)findViewById(R.id.cancel_a); 29 | add.setOnClickListener(new View.OnClickListener(){ 30 | public void onClick(View v){ 31 | String word; 32 | if(!EditCheck.CheckInt(idText.getText().toString(),"课程号",10000,99999)){ 33 | showNormalDialog(EditCheck.getWarning()); 34 | } 35 | else if(!EditCheck.CheckString(nameText.getText().toString(),"课程名",10)){ 36 | showNormalDialog(EditCheck.getWarning()); 37 | } 38 | else if(!EditCheck.CheckInt(creditText.getText().toString(),"学分",1,10)){ 39 | showNormalDialog(EditCheck.getWarning()); 40 | } 41 | else if(addDatebase()){ 42 | word = "添加课程成功！"; 43 | showNormalDialog(word); 44 | idText.setText(""); 45 | nameText.setText(""); 46 | creditText.setText(""); 47 | // finish(); 48 | }else{ 49 | word = "添加课程失败，请重试！"; 50 | showNormalDialog(word); 51 | } 52 | } 53 | }); 54 | delete.setOnClickListener(new View.OnClickListener(){ 55 | public void onClick(View v){ 56 | String word ; 57 | if(idText.getText().toString().equals("")){ 58 | word = "课程号不能为空！"; 59 | showNormalDialog(word); 60 | } 61 | else if(deleteDatabase()){ 62 | word = "删除课程成功！"; 63 | showNormalDialog(word); 64 | idText.setText(""); 65 | nameText.setText(""); 66 | creditText.setText(""); 67 | // finish(); 68 | }else{ 69 | word = "删除课程失败，请重试！"; 70 | showNormalDialog(word); 71 | } 72 | } 73 | }); 74 | cancel.setOnClickListener(new View.OnClickListener(){ 75 | public void onClick(View v){ 76 | finish(); 77 | } 78 | }); 79 | 80 | } 81 | private void showNormalDialog(String word){ 82 | 83 | final AlertDialog.Builder normalDialog = 84 | new AlertDialog.Builder(AddCourseActivity.this); 85 | normalDialog.setTitle("提示"); 86 | normalDialog.setMessage(word); 87 | normalDialog.setPositiveButton("确定", 88 | new DialogInterface.OnClickListener() { 89 | @Override 90 | public void onClick(DialogInterface dialog, int which) { 91 | normalDialog.setCancelable(true); 92 | //...To-do 93 | } 94 | }); 95 | 96 | // 显示 97 | normalDialog.show(); 98 | } 99 | 100 | /** 101 | * 向数据库添加课程信息 102 | */ 103 | public boolean addDatebase(){ 104 | CourseDao courseDao = new CourseDao(MyApplication.getInstance()); 105 | int courseId = Integer.parseInt(idText.getText().toString()); 106 | String courseName = nameText.getText().toString(); 107 | int credit = Integer.parseInt(creditText.getText().toString()); 108 | Course course = new Course(courseId,courseName,credit,R.drawable.health); 109 | if(courseDao.addCourse(course)){ 110 | return true; 111 | }else{ 112 | return false; 113 | } 114 | } 115 | 116 | /** 117 | * 在数据库删除课程信息 118 | */ 119 | public boolean deleteDatabase(){ 120 | CourseDao courseDao = new CourseDao(MyApplication.getInstance()); 121 | int courseId = Integer.parseInt(idText.getText().toString()); 122 | if(courseDao.deleteCourse(courseId)){ 123 | return true; 124 | }else{ 125 | return false; 126 | } 127 | } 128 | } 129 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Dao/CourseDao.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Dao; 2 | 3 | import android.content.ContentValues; 4 | import android.content.Context; 5 | import android.database.Cursor; 6 | import android.database.sqlite.SQLiteConstraintException; 7 | import android.database.sqlite.SQLiteDatabase; 8 | import android.util.Log; 9 | import android.widget.Toast; 10 | import java.util.ArrayList; 11 | import java.util.List; 12 | import com.clutch.student.R; 13 | import com.clutch.student.Entity.Course; 14 | /** 15 | * Created by clutchyu on 2018/3/17. 16 | * 对course表进行数据库操作 17 | */ 18 | 19 | public class CourseDao { 20 | private static final String TAG = "CourseDao"; 21 | 22 | // 列定义 23 | private final String[] ORDER_COLUMNS = new String[] {"course_id","course_name","credit"}; 24 | 25 | private Context context; 26 | private MyDatabaseHelper dbHelper; 27 | 28 | public CourseDao(Context context) { 29 | this.context = context; 30 | dbHelper = new MyDatabaseHelper(context); 31 | } 32 | 33 | /** 34 | * 判断表中是否有数据 35 | */ 36 | public boolean isDataExist(){ 37 | int count = 0; 38 | 39 | SQLiteDatabase db = null; 40 | Cursor cursor = null; 41 | 42 | try { 43 | db = dbHelper.getReadableDatabase(); 44 | // select count(Id) from Orders 45 | cursor = db.query("course", new String[]{"COUNT(Id)"}, null, null, null, null, null); 46 | 47 | if (cursor.moveToFirst()) { 48 | count = cursor.getInt(0); 49 | } 50 | if (count > 0) return true; 51 | } 52 | catch (Exception e) { 53 | Log.e(TAG, "", e); 54 | } 55 | finally { 56 | if (cursor != null) { 57 | cursor.close(); 58 | } 59 | if (db != null) { 60 | db.close(); 61 | } 62 | } 63 | return false; 64 | } 65 | /** 66 | * 查询课程信息 67 | */ 68 | public List getCourse(){ 69 | SQLiteDatabase db = null; 70 | Cursor cursor = null; 71 | String sql = "select * from course"; 72 | try { 73 | db = dbHelper.getReadableDatabase(); 74 | cursor = db.rawQuery(sql,null); 75 | //cursor = db.rawQuery("select * from course",null); 76 | /* cursor = db.query(dbHelper.TABLE_NAME, 77 | ORDER_COLUMNS, 78 | "course_name = ?", 79 | new String[] {"math"}, 80 | null, null, null);*/ 81 | if (cursor.getCount() > 0) { 82 | List courseList = new ArrayList(cursor.getCount()); 83 | while (cursor.moveToNext()) { 84 | Course course = parseCourse(cursor); 85 | courseList.add(course); 86 | } 87 | return courseList; 88 | } 89 | } 90 | catch (Exception e) { 91 | Log.e(TAG, "", e); 92 | } 93 | finally { 94 | if (cursor != null) { 95 | cursor.close(); 96 | } 97 | if (db != null) { 98 | db.close(); 99 | } 100 | } 101 | 102 | return null; 103 | } 104 | /** 105 | * 添加课程 106 | */ 107 | public boolean addCourse(Course course) { 108 | SQLiteDatabase db = null; 109 | try { 110 | db = dbHelper.getWritableDatabase(); 111 | db.beginTransaction(); 112 | ContentValues values = new ContentValues(); 113 | values.put("course_id",course.getId()); 114 | values.put("course_name",course.getName()); 115 | values.put("credit",course.getCredit()); 116 | db.insertOrThrow("course",null,values); 117 | db.setTransactionSuccessful(); 118 | return true; 119 | }catch (SQLiteConstraintException e){ 120 | //Toast.makeText(context, "主键重复", Toast.LENGTH_SHORT).show(); 121 | return false; 122 | }catch (Exception e){ 123 | Log.e(TAG, "", e); 124 | }finally { 125 | if (db != null) { 126 | db.endTransaction(); 127 | db.close(); 128 | } 129 | } 130 | return false; 131 | 132 | } 133 | /** 134 | * 删除课程,以课程id 135 | */ 136 | public boolean deleteCourse(int courseId) { 137 | SQLiteDatabase db = null; 138 | try { 139 | db = dbHelper.getWritableDatabase(); 140 | db.beginTransaction(); 141 | db.delete("course","course_id = ?",new String[]{String.valueOf(courseId)}); 142 | db.setTransactionSuccessful(); 143 | return true; 144 | }catch (SQLiteConstraintException e){ 145 | //Toast.makeText(context, "主键重复", Toast.LENGTH_SHORT).show(); 146 | return false; 147 | }catch (Exception e){ 148 | Log.e(TAG, "", e); 149 | }finally { 150 | if (db != null) { 151 | db.endTransaction(); 152 | db.close(); 153 | } 154 | } 155 | return false; 156 | } 157 | /** 158 | * 将找到的数据转化为Course类 159 | */ 160 | private Course parseCourse(Cursor cursor){ 161 | Course course = new Course(); 162 | int id = cursor.getInt(cursor.getColumnIndex("course_id")); 163 | course.setId(id); 164 | course.setName(cursor.getString(cursor.getColumnIndex("course_name"))); 165 | course.setCredit(cursor.getInt(cursor.getColumnIndex("credit"))); 166 | switch (id){ 167 | case 10001: 168 | course.setImageId(R.drawable.math); 169 | break; 170 | case 10002: 171 | course.setImageId(R.drawable.chinese); 172 | break; 173 | case 10003: 174 | course.setImageId(R.drawable.english); 175 | break; 176 | case 10004: 177 | course.setImageId(R.drawable.physic); 178 | break; 179 | case 10005: 180 | course.setImageId(R.drawable.sport); 181 | break; 182 | default: 183 | course.setImageId(R.drawable.health); 184 | } 185 | 186 | return course; 187 | } 188 | 189 | 190 | } 191 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Dao/MyDatabaseHelper.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Dao; 2 | import android.content.Context; 3 | import android.database.sqlite.SQLiteDatabase; 4 | import android.database.sqlite.SQLiteOpenHelper; 5 | /** 6 | * Created by clutchyu on 2018/3/17. 7 | * 创建表，运行MainActivity时首先创建该对象dbHelper 8 | */ 9 | 10 | public class MyDatabaseHelper extends SQLiteOpenHelper { 11 | private static final int DB_VERSION = 1; 12 | private static final String DB_NAME = "StudentSystem.db"; 13 | public static final String CREATE_STUDENT = "create table student(" + 14 | "id int primary key," + 15 | "name text not null," + 16 | "sex text not null," + 17 | "age int not null,"+ 18 | "phone text not null)"; 19 | public static final String CREATE_COURSE = "create table course(" + 20 | "course_id int primary key," + 21 | "course_name text unique," + 22 | "credit int not null)" ; 23 | public static final String CREATE_SCORE = "create table score(" + 24 | "student_id int not null," + 25 | "course_id int not null," + 26 | "grade int," + 27 | "constraint score_PK primary key(student_id,course_id)," + 28 | "constraint fk_SID foreign key(student_id) references student(id)on delete cascade," + 29 | "constraint fk_CID foreign key(course_id) references course(course_id)on delete cascade)"; 30 | public static final String CREATE_LOG = "create table log(" + 31 | "student_id int primary key," + 32 | "password text not null," + 33 | "constraint fk_ID foreign key(student_id) references student(id) on delete cascade)"; 34 | 35 | 36 | 37 | private Context mContext; 38 | 39 | //构造方法：第一个参数Context，第二个参数数据库名，第三个参数cursor允许我们在查询数据的时候返回一个自定义的光标位置，一般传入的都是null，第四个参数表示目前库的版本号（用于对库进行升级） 40 | public MyDatabaseHelper(Context context){ 41 | super(context, DB_NAME, null, DB_VERSION); 42 | mContext = context; 43 | } 44 | 45 | @Override 46 | public void onCreate(SQLiteDatabase db) { 47 | //调用SQLiteDatabase中的execSQL（）执行建表语句。 48 | db.execSQL(CREATE_STUDENT); 49 | db.execSQL(CREATE_COURSE); 50 | db.execSQL(CREATE_SCORE); 51 | db.execSQL(CREATE_LOG); 52 | init(db); 53 | } 54 | 55 | @Override 56 | public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 57 | } 58 | 59 | /** 60 | * 插入初始化数据 61 | */ 62 | public void init(SQLiteDatabase db){ 63 | String sql[] = {"insert into student values (10001,'小李','男',20,'123456789')", 64 | "insert into student values (10002,'小王','男',20,'123456789')", 65 | "insert into student values (10003,'小张','女',20,'123456789')", 66 | "insert into student values (10004,'小周','男',20,'123456789')", 67 | "insert into student values (10005,'小吾','女',20,'123456789')", 68 | "insert into student values (10006,'小贾','男',20,'123456789')", 69 | "insert into student values (00000,'管理员','男',0,'0000000')", 70 | "insert into course values (10001,'数学',5)", 71 | "insert into course values (10002,'语文',5)", 72 | "insert into course values (10003,'英语',5)", 73 | "insert into course values (10004,'物理',5)", 74 | "insert into course values (10005,'体育',5)", 75 | "insert into course values (10006,'数据库',5)", 76 | "insert into course values (10007,'系统结构',6)", 77 | "insert into course values (10008,'组成原理',5)", 78 | "insert into course values (10009,'程序设计',6)", 79 | "insert into course values (100010,'网络',5)", 80 | "insert into score values (10001,10001,95)", 81 | "insert into score values (10001,10002,95)", 82 | "insert into score values (10001,10003,95)", 83 | "insert into score values (10002,10001,95)", 84 | "insert into score values (10002,10006,95)", 85 | "insert into score values (10005,10007,95)", 86 | "insert into log values (10001,'123456')", 87 | "insert into log values (10002,'123456')", 88 | "insert into log values (10003,'123456')", 89 | "insert into log values (10004,'123456')", 90 | "insert into log values (10005,'123456')", 91 | "insert into log values (10006,'123456')", 92 | "insert into log values (00000,'000000')", 93 | }; 94 | for(int i= 0;i 0) return true; 50 | } 51 | catch (Exception e) { 52 | Log.e(TAG, "", e); 53 | } 54 | finally { 55 | if (cursor != null) { 56 | cursor.close(); 57 | } 58 | if (db != null) { 59 | db.close(); 60 | } 61 | } 62 | return false; 63 | } 64 | /** 65 | * 录入选课信息及成绩 66 | */ 67 | public boolean setScore(Score score){ 68 | SQLiteDatabase db = null; 69 | try { 70 | db = dbHelper.getWritableDatabase(); 71 | db.beginTransaction(); 72 | ContentValues values = new ContentValues(); 73 | values.put("student_id",score.getStudentId()); 74 | values.put("course_id",score.getCourseId()); 75 | values.put("grade",score.getGrade()); //此项数据可能为空 76 | db.insertOrThrow("student",null,values); 77 | db.setTransactionSuccessful(); 78 | return true; 79 | }catch (SQLiteConstraintException e){ 80 | //Toast.makeText(context, "主键重复", Toast.LENGTH_SHORT).show(); 81 | return false; 82 | }catch (Exception e){ 83 | Log.e(TAG, "", e); 84 | }finally { 85 | if (db != null) { 86 | db.endTransaction(); 87 | db.close(); 88 | } 89 | } 90 | return false; 91 | } 92 | /** 93 | * 查询选课情况及课程分数,根据学生Id 94 | */ 95 | public List getScore(int student_id){ 96 | SQLiteDatabase db = null; 97 | Cursor cursor = null; 98 | String sql = "select c.course_id,c.course_name,credit,grade " + 99 | "from course as c,score as s " + 100 | "where s.student_id= ? and s.course_id=c.course_id"; 101 | try{ 102 | db = dbHelper.getWritableDatabase(); 103 | cursor = db.rawQuery(sql,new String[]{String.valueOf(student_id)}); 104 | if (cursor.getCount() > 0) { 105 | List scoreList = new ArrayList(cursor.getCount()); 106 | while (cursor.moveToNext()) { 107 | CourseSec course = parseCourseSec(cursor); 108 | scoreList.add(course); 109 | } 110 | 111 | return scoreList; 112 | } 113 | 114 | 115 | }catch (Exception e) { 116 | Log.e(TAG, "", e); 117 | } 118 | finally { 119 | if (cursor != null) { 120 | cursor.close(); 121 | } 122 | if (db != null) { 123 | db.close(); 124 | } 125 | } 126 | 127 | return null; 128 | 129 | } 130 | /** 131 | * 查询学生已选课程，Course类 132 | */ 133 | public List getCourse(int id) 134 | { 135 | SQLiteDatabase db = null; 136 | Cursor cursor = null; 137 | String sql = "select c.course_id,c.course_name,credit " + 138 | "from course as c,score as s " + 139 | "where s.student_id= ? and s.course_id=c.course_id"; //出去socre表中已选的课程 140 | try { 141 | db = dbHelper.getReadableDatabase(); 142 | cursor = db.rawQuery(sql,new String[]{String.valueOf(id)}); 143 | if (cursor.getCount() > 0) { 144 | List courseList = new ArrayList(cursor.getCount()); 145 | while (cursor.moveToNext()) { 146 | Course course = parseCourse(cursor); 147 | courseList.add(course); 148 | } 149 | return courseList; 150 | } 151 | } 152 | catch (Exception e) { 153 | Log.e(TAG, "", e); 154 | } 155 | finally { 156 | if (cursor != null) { 157 | cursor.close(); 158 | } 159 | if (db != null) { 160 | db.close(); 161 | } 162 | } 163 | 164 | return null; 165 | } 166 | /** 167 | * 查询学生未选课程信息 168 | */ 169 | public List getUnCourse(int id){ 170 | SQLiteDatabase db = null; 171 | Cursor cursor = null; 172 | String sql = "select * from course where course_id not in" + 173 | "(select course_id from score where student_id = ?)"; //除去socre表中已选的课程 174 | try { 175 | db = dbHelper.getReadableDatabase(); 176 | cursor = db.rawQuery(sql,new String[]{String.valueOf(id)}); 177 | if (cursor.getCount() > 0) { 178 | List courseList = new ArrayList(cursor.getCount()); 179 | while (cursor.moveToNext()) { 180 | Course course = parseCourse(cursor); 181 | courseList.add(course); 182 | } 183 | return courseList; 184 | } 185 | } 186 | catch (Exception e) { 187 | Log.e(TAG, "", e); 188 | } 189 | finally { 190 | if (cursor != null) { 191 | cursor.close(); 192 | } 193 | if (db != null) { 194 | db.close(); 195 | } 196 | } 197 | 198 | return null; 199 | } 200 | /** 201 | * 学生选课 202 | */ 203 | public boolean chooseCourse(int student_id,int course_id){ 204 | SQLiteDatabase db = null; 205 | try { 206 | db = dbHelper.getWritableDatabase(); 207 | db.beginTransaction(); 208 | ContentValues values = new ContentValues(); 209 | values.put("student_id",student_id); 210 | values.put("course_id",course_id); 211 | db.insertOrThrow("score",null,values); 212 | db.setTransactionSuccessful(); 213 | return true; 214 | }catch (SQLiteConstraintException e){ 215 | //Toast.makeText(context, "主键重复", Toast.LENGTH_SHORT).show(); 216 | return false; 217 | }catch (Exception e){ 218 | Log.e(TAG, "", e); 219 | }finally { 220 | if (db != null) { 221 | db.endTransaction(); 222 | db.close(); 223 | } 224 | } 225 | return false; 226 | } 227 | /** 228 | * 录入学生成绩，需要先判断学生是否选了该门课程，没选提示错误 229 | * 进行update操作即便是表中数据不符合要更新的条件，无法进行更行，也不会产生异常 230 | * 先对要进行更新的学生id和课程id进行查询，看表中是否有对应的项，如果有则进行update操作，没有则返回false 231 | */ 232 | public boolean writeScore(Score score){ 233 | SQLiteDatabase db = null; 234 | String sql = "update score set grade = ? where student_id = ? and course_id = ?"; 235 | try { 236 | db = dbHelper.getWritableDatabase(); 237 | db.beginTransaction(); 238 | if(checkCourse(score.getStudentId(),score.getCourseId())){ 239 | db.execSQL(sql,new Object[]{score.getGrade(),score.getStudentId(),score.getCourseId()}); 240 | db.setTransactionSuccessful(); 241 | return true; 242 | }else{ 243 | return false; 244 | } 245 | }catch (SQLiteConstraintException e){ 246 | return false; 247 | }catch (Exception e) { 248 | Log.e(TAG, "", e); 249 | 250 | } 251 | finally { 252 | if (db != null) { 253 | db.endTransaction(); 254 | db.close(); 255 | } 256 | } 257 | return false; 258 | } 259 | /** 260 | * 根据学生id,和课程Id，去Score中查询是否有对应项，有返回true,无返回false 261 | */ 262 | private boolean checkCourse(int student_id,int course_id){ 263 | SQLiteDatabase db = dbHelper.getReadableDatabase(); 264 | Cursor cursor = null; 265 | String sql = "select * from score where student_id = ? and course_id = ?"; 266 | cursor = db.rawQuery(sql,new String[]{String.valueOf(student_id),String.valueOf(course_id)}); 267 | if(cursor.getCount()>0){ 268 | return true; 269 | }else{ 270 | return false; 271 | } 272 | 273 | 274 | } 275 | /** 276 | * 将查询到的数据转换为CourseSec类对象 277 | * @param cursor 278 | * @return 279 | */ 280 | private CourseSec parseCourseSec(Cursor cursor) { 281 | CourseSec course = new CourseSec(); 282 | int id = cursor.getInt(cursor.getColumnIndex("course_id")); 283 | course.setCourse_id(cursor.getInt(cursor.getColumnIndex("course_id"))); 284 | course.setCourse_name(cursor.getString(cursor.getColumnIndex("course_name"))); 285 | course.setCredit(cursor.getInt(cursor.getColumnIndex("credit"))); 286 | course.setGrade(cursor.getInt(cursor.getColumnIndex("grade"))); 287 | switch (id){ 288 | case 10001: 289 | course.setImageId(R.drawable.math); 290 | break; 291 | case 10002: 292 | course.setImageId(R.drawable.chinese); 293 | break; 294 | case 10003: 295 | course.setImageId(R.drawable.english); 296 | break; 297 | case 10004: 298 | course.setImageId(R.drawable.physic); 299 | break; 300 | case 10005: 301 | course.setImageId(R.drawable.sport); 302 | break; 303 | default: 304 | course.setImageId(R.drawable.health); 305 | } 306 | return course; 307 | } 308 | /** 309 | * 将找到的数据转化为Course类 310 | */ 311 | private Course parseCourse(Cursor cursor){ 312 | Course course = new Course(); 313 | int id = cursor.getInt(cursor.getColumnIndex("course_id")); 314 | course.setId(id); 315 | course.setName(cursor.getString(cursor.getColumnIndex("course_name"))); 316 | course.setCredit(cursor.getInt(cursor.getColumnIndex("credit"))); 317 | switch (id){ 318 | case 10001: 319 | course.setImageId(R.drawable.math); 320 | break; 321 | case 10002: 322 | course.setImageId(R.drawable.chinese); 323 | break; 324 | case 10003: 325 | course.setImageId(R.drawable.english); 326 | break; 327 | case 10004: 328 | course.setImageId(R.drawable.physic); 329 | break; 330 | case 10005: 331 | course.setImageId(R.drawable.sport); 332 | break; 333 | default: 334 | course.setImageId(R.drawable.health); 335 | } 336 | 337 | return course; 338 | } 339 | } 340 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Dao/StudentDao.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Dao; 2 | 3 | import android.content.ContentValues; 4 | import android.content.Context; 5 | import android.database.Cursor; 6 | import android.database.sqlite.SQLiteConstraintException; 7 | import android.database.sqlite.SQLiteDatabase; 8 | import android.util.Log; 9 | 10 | import com.clutch.student.Entity.Student_info; 11 | import com.clutch.student.Entity.Student; 12 | import com.clutch.student.R; 13 | 14 | import java.sql.SQLData; 15 | import java.util.ArrayList; 16 | import java.util.List; 17 | 18 | /** 19 | * Created by clutchyu on 2018/3/19. 20 | * 对student表进行数据库操作 21 | */ 22 | 23 | public class StudentDao { 24 | private static final String TAG = "StudentDao"; 25 | 26 | // 列定义 27 | private final String[] ORDER_COLUMNS = new String[] {"id","name","sex","age","phone"}; 28 | 29 | private Context context; 30 | private MyDatabaseHelper dbHelper; 31 | 32 | public StudentDao(Context context) { 33 | this.context = context; 34 | dbHelper = new MyDatabaseHelper(context); 35 | } 36 | /** 37 | * 判断表中是否有数据 38 | */ 39 | public boolean isDataExist(){ 40 | int count = 0; 41 | 42 | SQLiteDatabase db = null; 43 | Cursor cursor = null; 44 | 45 | try { 46 | db = dbHelper.getReadableDatabase(); 47 | // select count(Id) from Orders 48 | cursor = db.query("student", new String[]{"COUNT(Id)"}, null, null, null, null, null); 49 | 50 | if (cursor.moveToFirst()) { 51 | count = cursor.getInt(0); 52 | } 53 | if (count > 0) return true; 54 | } 55 | catch (Exception e) { 56 | Log.e(TAG, "", e); 57 | } 58 | finally { 59 | if (cursor != null) { 60 | cursor.close(); 61 | } 62 | if (db != null) { 63 | db.close(); 64 | } 65 | } 66 | return false; 67 | } 68 | 69 | 70 | 71 | /** 72 | * 根据学生Id查询学生信息 73 | */ 74 | 75 | public List getStudent(int id){ 76 | SQLiteDatabase db = null; 77 | Cursor cursor = null; 78 | 79 | try { 80 | db = dbHelper.getReadableDatabase(); 81 | String sql = "select * from student where id = ?"; 82 | cursor = db.rawQuery(sql,new String[]{String.valueOf(id)}); 83 | if (cursor.getCount() > 0) { 84 | Student student = new Student(); 85 | while(cursor.moveToNext()){ 86 | student = parseStudent(cursor); 87 | } 88 | 89 | List StudentList = new ArrayList(5); 90 | Student_info sid = new Student_info(R.drawable.id,Integer.toString(student.getId())); 91 | StudentList.add(sid); 92 | Student_info sname = new Student_info(R.drawable.name,student.getName()); 93 | StudentList.add(sname); 94 | Student_info sex = new Student_info(R.drawable.sex,student.getSex()); 95 | StudentList.add(sex); 96 | Student_info age = new Student_info(R.drawable.age,Integer.toString(student.getAge())); 97 | StudentList.add(age); 98 | Student_info phone = new Student_info(R.drawable.phone,student.getPhone()); 99 | StudentList.add(phone); 100 | 101 | return StudentList; 102 | } 103 | } 104 | catch (Exception e) { 105 | Log.e(TAG, "", e); 106 | } 107 | finally { 108 | if (cursor != null) { 109 | cursor.close(); 110 | } 111 | if (db != null) { 112 | db.close(); 113 | } 114 | } 115 | return null; 116 | } 117 | /** 118 | * 更新学生信息,学生用户自己修改个人信息,根据Id进行更新，无法更改Id 119 | */ 120 | public Student updateStudent(Student student){ 121 | SQLiteDatabase db = null; 122 | try { 123 | db = dbHelper.getWritableDatabase(); 124 | db.beginTransaction(); 125 | ContentValues value = new ContentValues(); 126 | value.put("name",student.getName()); 127 | value.put("sex",student.getSex()); 128 | value.put("age",student.getAge()); 129 | value.put("phone",student.getPhone()); 130 | db.update("student",value,"id = ?",new String[]{String.valueOf(student.getId())}); 131 | db.setTransactionSuccessful(); 132 | return student; //直接返回了参数中的Student类对象，并没有重新查询数据库中刚进行更新的对象，结果是一样的 133 | }catch (Exception e) { 134 | Log.e(TAG, "", e); 135 | } 136 | finally { 137 | if (db != null) { 138 | db.endTransaction(); 139 | db.close(); 140 | } 141 | } 142 | return null; 143 | } 144 | 145 | /** 146 | * 插入学生信息，用户注册 147 | */ 148 | public boolean insertStudent(Student student){ 149 | SQLiteDatabase db = null; 150 | try { 151 | db = dbHelper.getWritableDatabase(); 152 | db.beginTransaction(); 153 | ContentValues values = new ContentValues(); 154 | values.put("id",student.getId()); 155 | values.put("name",student.getName()); 156 | values.put("sex",student.getSex()); 157 | values.put("age",student.getAge()); 158 | values.put("phone",student.getPhone()); 159 | db.insertOrThrow("student",null,values); 160 | db.setTransactionSuccessful(); 161 | return true; 162 | }catch (SQLiteConstraintException e){ 163 | //Toast.makeText(context, "主键重复", Toast.LENGTH_SHORT).show(); 164 | return false; 165 | }catch (Exception e){ 166 | Log.e(TAG, "", e); 167 | }finally { 168 | if (db != null) { 169 | db.endTransaction(); 170 | db.close(); 171 | } 172 | } 173 | return false; 174 | } 175 | /** 176 | * 转化为Student类 177 | * */ 178 | 179 | private Student parseStudent(Cursor cursor) { 180 | Student student = new Student(); 181 | student.setId(cursor.getInt(cursor.getColumnIndex("id"))); 182 | student.setName(cursor.getString(cursor.getColumnIndex("name"))); 183 | student.setSex(cursor.getString(cursor.getColumnIndex("sex"))); 184 | student.setAge(cursor.getInt(cursor.getColumnIndex("age"))); 185 | student.setPhone(cursor.getString(cursor.getColumnIndex("phone"))); 186 | student.setImageId(R.drawable.health); 187 | return student; 188 | } 189 | } 190 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Dao/UserDao.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Dao; 2 | 3 | import android.content.ContentValues; 4 | import android.content.Context; 5 | import android.database.Cursor; 6 | import android.database.sqlite.SQLiteConstraintException; 7 | import android.database.sqlite.SQLiteDatabase; 8 | import android.util.Log; 9 | 10 | import com.clutch.student.Entity.User; 11 | 12 | /** 13 | * Created by clutchyu on 2018/3/26. 14 | * 对log表进行数据库操作 15 | */ 16 | 17 | public class UserDao { 18 | private Context context; 19 | private MyDatabaseHelper dbHelper; 20 | 21 | public UserDao(Context context) { 22 | this.context = context; 23 | dbHelper = new MyDatabaseHelper(context); 24 | } 25 | 26 | /** 27 | * 检查登录表中是否有对应的账号 28 | */ 29 | public boolean check(int id, String password) { 30 | SQLiteDatabase db = null; 31 | Cursor cursor = null; 32 | String sql = "select password from log where student_id = ?"; 33 | try { 34 | db = dbHelper.getReadableDatabase(); 35 | cursor = db.rawQuery(sql, new String[]{String.valueOf(id)}); 36 | 37 | if (cursor.getCount() > 0) { 38 | while (cursor.moveToNext()) { 39 | User user = new User(); 40 | String passwd = cursor.getString(cursor.getColumnIndex("password")); 41 | if(passwd.equals(password)){ 42 | return true; 43 | } 44 | 45 | } 46 | 47 | } 48 | 49 | 50 | } catch (Exception e) { 51 | 52 | } /*finally { 53 | if (cursor != null) { 54 | cursor.close(); 55 | } 56 | if (db != null) { 57 | db.close(); 58 | } 59 | }*/ 60 | 61 | return false; 62 | } 63 | /** 64 | * 向表中插入数据 65 | */ 66 | public boolean insertLog(int studentId,String password){ 67 | SQLiteDatabase db = null; 68 | try { 69 | db = dbHelper.getWritableDatabase(); 70 | db.beginTransaction(); 71 | ContentValues values = new ContentValues(); 72 | values.put("student_id",studentId); 73 | values.put("password",password); 74 | db.insertOrThrow("log",null,values); 75 | db.setTransactionSuccessful(); 76 | return true; 77 | }catch (SQLiteConstraintException e){ 78 | //Toast.makeText(context, "主键重复", Toast.LENGTH_SHORT).show(); 79 | return false; 80 | }catch (Exception e){ 81 | 82 | }finally { 83 | if (db != null) { 84 | db.endTransaction(); 85 | db.close(); 86 | } 87 | } 88 | return false; 89 | } 90 | /** 91 | * 修改密码 92 | */ 93 | public boolean modifyPasswd(User user,String newPasswd){ 94 | SQLiteDatabase db = null; 95 | String sql = "update log set password = ? where student_id = ?"; 96 | try { 97 | db = dbHelper.getWritableDatabase(); 98 | db.beginTransaction(); 99 | if(check(user.getId(),user.getPassword())){ 100 | db.execSQL(sql,new Object[]{newPasswd,user.getId()}); 101 | db.setTransactionSuccessful(); 102 | return true; 103 | } 104 | else { 105 | return false; 106 | } 107 | }catch (SQLiteConstraintException e){ 108 | //Toast.makeText(context, "主键重复", Toast.LENGTH_SHORT).show(); 109 | return false; 110 | }catch (Exception e){ 111 | 112 | }finally { 113 | if (db != null) { 114 | db.endTransaction(); 115 | db.close(); 116 | } 117 | } 118 | return false; 119 | } 120 | } -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/EditCheck.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student; 2 | 3 | /** 4 | * Created by clutchyu on 2018/3/31. 5 | * 用于数据输入检验 6 | */ 7 | 8 | public class EditCheck { 9 | private static String warning; 10 | public EditCheck(){ 11 | 12 | } 13 | public static String getWarning(){return warning;} 14 | public static boolean CheckInt(String input,String label,int min,int max){ 15 | if(input.equals("")) { 16 | warning = label + "不能为空！"; 17 | return false; 18 | } 19 | else { 20 | try{ 21 | int value = Integer.parseInt(input); 22 | if(valuemax) { 23 | warning = label + "应在" + min + "至" + max + "区间"; 24 | return false; 25 | } 26 | }catch(RuntimeException e){ 27 | warning =label+"格式错误！"; 28 | return false; 29 | } 30 | } 31 | return true; 32 | } 33 | public static boolean CheckString(String input,String label,int size){ 34 | if(input.equals("")) { 35 | warning = label + "不能为空！"; 36 | return false; 37 | } 38 | else if(input.length()>size){ 39 | warning = label + "长度错误！"; 40 | } 41 | return true; 42 | } 43 | } 44 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Entity/Course.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Entity; 2 | 3 | /** 4 | * Created by clutchyu on 2018/3/17. 5 | */ 6 | /** 7 | * 课程类，课程号，课程名，学分，图片id 8 | */ 9 | public class Course { 10 | private int courseId; 11 | private String courseName; 12 | private int credit; 13 | private int imageId; 14 | public Course(){ 15 | 16 | } 17 | public Course(int courseId,String courseName,int credit,int imageId){ 18 | this.courseId = courseId; 19 | this.courseName = courseName; 20 | this.credit = credit; 21 | this.imageId = imageId; 22 | } 23 | 24 | public int getId(){ 25 | return courseId; 26 | } 27 | public void setId(int id){this.courseId = id;} 28 | public String getName(){ 29 | return courseName; 30 | } 31 | public void setName(String name){this.courseName = name;} 32 | public int getCredit(){ 33 | return credit; 34 | } 35 | public void setCredit(int credit){this.credit = credit;} 36 | public int getImageId(){ 37 | return imageId; 38 | } 39 | public void setImageId(int id){this.imageId = id;} 40 | } 41 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Entity/CourseSec.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Entity; 2 | 3 | /** 4 | * Created by clutchyu on 2018/3/21. 5 | * 展示学生选课及对应课程分数的类 6 | */ 7 | 8 | public class CourseSec { 9 | private int course_id; 10 | private String course_name; 11 | private int credit; 12 | private int grade; 13 | private int imageId; 14 | public CourseSec(){ 15 | 16 | } 17 | public CourseSec(int course_id,String course_name,int credit,int grade,int imageId){ 18 | this.course_id = course_id; 19 | this.course_name = course_name; 20 | this.credit = credit; 21 | this.grade = grade; 22 | this.imageId = imageId; 23 | } 24 | public int getCourse_id(){return this.course_id;} 25 | public String getCourse_name(){return this.course_name;} 26 | public int getCredit(){return this.credit;} 27 | public int getGrade(){return this.grade;} 28 | public int getImageId(){return this.imageId;} 29 | public void setCourse_id(int course_id){this.course_id = course_id;} 30 | public void setCourse_name(String course_name){this.course_name = course_name;} 31 | public void setCredit(int credit){this.credit = credit;} 32 | public void setGrade(int grade){this.grade = grade;} 33 | public void setImageId(int imageId){this.imageId = imageId;} 34 | } 35 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Entity/Score.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Entity; 2 | 3 | /** 4 | * Created by clutchyu on 2018/3/21. 5 | * 选课信息类，课程Id,学生Id,分别对应各自表中的属性，有外键约束 6 | * 成绩grade为可空属性，即学生选课并未结课，结课后由管理员录入成绩 7 | * 学生无权限修改该表中的数据 8 | */ 9 | 10 | public class Score { 11 | private int course_id; 12 | private int student_id; 13 | private int grade; 14 | public Score(){ 15 | 16 | } 17 | public Score(int course,int student,int grade){ 18 | course_id = course; 19 | student_id = student; 20 | this.grade = grade; 21 | } 22 | public int getCourseId(){return this.course_id;} 23 | public void setCourseId(int course_id){this.course_id = course_id;} 24 | public int getStudentId(){return this.student_id;} 25 | public void setStudentId(int student_id){this.student_id = student_id;} 26 | public int getGrade(){return this.grade;} 27 | public void setGrade(int grade){this.grade = grade;} 28 | } 29 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Entity/Student.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Entity; 2 | 3 | /** 4 | * Created by clutchyu on 2018/3/19. 5 | * 学生实体类，id,name,sex,age,phone 6 | */ 7 | 8 | public class Student { 9 | private int id; 10 | private String name; 11 | private String sex; 12 | private int age; 13 | private String phone; 14 | private int imageId; 15 | public Student(){ 16 | 17 | } 18 | public Student(int id,String name,String sex,int age,String phone,int imageId){ 19 | this.id = id; 20 | this.name = name; 21 | this.sex = sex; 22 | this. age = age; 23 | this. phone = phone; 24 | this.imageId = imageId; 25 | } 26 | public int getId(){return id;} 27 | public void setId(int id){this.id=id;} 28 | public String getName(){return name;} 29 | public void setName(String name){this.name = name;} 30 | public String getSex(){return this.sex;} 31 | public void setSex(String sex){this.sex = sex;} 32 | public int getAge(){return this.age;} 33 | public void setAge(int age){this.age=age;} 34 | public String getPhone(){return this.phone;} 35 | public void setPhone(String phone){this.phone=phone;} 36 | public int getImageId(){return imageId;} 37 | public void setImageId(int id){this.imageId = id;} 38 | } 39 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Entity/Student_info.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Entity; 2 | 3 | 4 | /** 5 | * Created by clutchyu on 2018/3/19. 6 | * 拆分学生信息的内部类，用于单项展示学生属性在RecycleView上 7 | */ 8 | 9 | public class Student_info{ 10 | private int image; 11 | private String info; 12 | public Student_info(){ 13 | 14 | } 15 | public Student_info(int image,String info){ 16 | this.image = image; 17 | this.info = info; 18 | } 19 | public int getImage(){return this.image;} 20 | public void setImage(int image){this.image = image;} 21 | public String getInfo(){return this.info;} 22 | public void setInfo(String info){this.info = info;} 23 | } 24 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Entity/User.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Entity; 2 | 3 | /** 4 | * Created by clutchyu on 2018/3/26. 5 | * 登录信息类 6 | */ 7 | 8 | public class User { 9 | private int student_id; 10 | private String password; 11 | public User(){ 12 | 13 | } 14 | public User(int student_id, String password){ 15 | this.student_id = student_id; 16 | this.password = password; 17 | } 18 | public int getId(){return student_id;} 19 | public void setStudent_id(int id){student_id=id;} 20 | public String getPassword(){return password;} 21 | public void setPassword(String password){this.password=password;} 22 | } 23 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Fragment/FirstFragment.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Fragment; 2 | 3 | /** 4 | * Created by clutchyu on 2018/3/17. 5 | * BottomNavigationView对应的第一个Fragment 6 | * 显示学生已选课程信息，整个页面布局为一个RecyclerView 7 | */ 8 | 9 | 10 | import android.content.Context; 11 | import android.os.Bundle; 12 | import android.support.v4.app.Fragment; 13 | import android.support.v7.widget.DividerItemDecoration; 14 | import android.support.v7.widget.LinearLayoutManager; 15 | import android.view.LayoutInflater; 16 | import android.view.View; 17 | import android.view.ViewGroup; 18 | 19 | 20 | import com.clutch.student.Adapter.CourseSecAdapter; 21 | import com.clutch.student.Dao.ScoreDao; 22 | import com.clutch.student.Entity.CourseSec; 23 | import com.clutch.student.MainActivity; 24 | import com.clutch.student.MyApplication; 25 | import com.clutch.student.R; 26 | import android.support.v7.widget.RecyclerView; 27 | import android.widget.TextView; 28 | import java.util.List; 29 | 30 | 31 | public class FirstFragment extends Fragment { 32 | static Context context = MyApplication.getInstance(); 33 | private static ScoreDao course = new ScoreDao(context); 34 | private static RecyclerView recyclerView; 35 | private static TextView emptyText; 36 | private static List CourseList; 37 | public FirstFragment() { 38 | // Required empty public constructor 39 | } 40 | @Override 41 | public View onCreateView(LayoutInflater inflater, ViewGroup container, 42 | Bundle savedInstanceState) { 43 | View view = inflater.inflate(R.layout.fragment_first, container, false); 44 | // initCourse(); 45 | recyclerView = (RecyclerView) view.findViewById(R.id.recycler_view); 46 | emptyText = (TextView) view.findViewById(R.id.empty_text); //用于在无数据时进行提示 47 | CourseList = course.getScore(MainActivity.getStudentId()); //获取已选课程的List 48 | if(CourseList==null){ 49 | //若数据为空，则显示emptyText,隐藏recyclerView 50 | emptyText.setVisibility(View.VISIBLE); 51 | recyclerView.setVisibility(View.GONE); 52 | }else { 53 | LinearLayoutManager layoutManager = new LinearLayoutManager(context); //线性布局 54 | recyclerView.setLayoutManager(layoutManager); //RecyclerView加载线性布局 55 | CourseSecAdapter adapter = new CourseSecAdapter(CourseList); //创建课程类适配器，参数为刚查询到的存有课程信息的CourseList 56 | recyclerView.setAdapter(adapter); //将适配器加载入recyclerView中 57 | //为RecyclerView中的每一项加分割线 58 | DividerItemDecoration mDividerItemDecoration = new DividerItemDecoration(recyclerView.getContext(),layoutManager.getOrientation()); 59 | recyclerView.addItemDecoration(mDividerItemDecoration); 60 | } 61 | // Inflate the layout for this fragment 62 | return view; 63 | } 64 | /** 65 | * 刷新数据，点击对应课程在Adapter中调用该函数实现页面刷新 66 | * 内容为重新查询数据库中的数据放入recyclerView 67 | */ 68 | public static void update() { 69 | CourseList = course.getScore(MainActivity.getStudentId()); 70 | if(CourseList==null){ 71 | emptyText.setVisibility(View.VISIBLE); 72 | recyclerView.setVisibility(View.GONE); 73 | }else { 74 | emptyText.setVisibility(View.GONE); 75 | recyclerView.setVisibility(View.VISIBLE); 76 | LinearLayoutManager layoutManager = new LinearLayoutManager(context); 77 | recyclerView.setLayoutManager(layoutManager); 78 | CourseSecAdapter adapter = new CourseSecAdapter(CourseList); 79 | recyclerView.setAdapter(adapter); 80 | DividerItemDecoration mDividerItemDecoration = new DividerItemDecoration(recyclerView.getContext(),layoutManager.getOrientation()); 81 | recyclerView.addItemDecoration(mDividerItemDecoration); 82 | } 83 | } 84 | 85 | 86 | 87 | 88 | 89 | } 90 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Fragment/ManagerFirstFragment.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Fragment; 2 | 3 | 4 | import android.content.Context; 5 | import android.content.Intent; 6 | import android.os.Bundle; 7 | import android.support.v4.app.Fragment; 8 | import android.support.v7.widget.DividerItemDecoration; 9 | import android.support.v7.widget.LinearLayoutManager; 10 | import android.support.v7.widget.RecyclerView; 11 | import android.view.LayoutInflater; 12 | import android.view.View; 13 | import android.view.ViewGroup; 14 | import android.widget.Button; 15 | import android.widget.TextView; 16 | 17 | import com.clutch.student.Adapter.CourseAdapter; 18 | import com.clutch.student.AddCourseActivity; 19 | import com.clutch.student.Dao.CourseDao; 20 | import com.clutch.student.Entity.Course; 21 | import com.clutch.student.Entity.CourseSec; 22 | import com.clutch.student.MainActivity; 23 | import com.clutch.student.MyApplication; 24 | import com.clutch.student.R; 25 | 26 | import java.util.List; 27 | 28 | /** 29 | * Created by clutchyu on 2018/3/27. 30 | * 以管理员身份登入系统的第一个界面，显示所有课程信息及选课人数，底部有添加课程和删除课程的按钮 31 | */ 32 | 33 | public class ManagerFirstFragment extends Fragment { 34 | static Context context = MyApplication.getInstance(); 35 | private CourseDao course = new CourseDao(context); 36 | private static RecyclerView recyclerView; 37 | private static TextView emptyText; 38 | private Button add; 39 | private static List CourseList; 40 | public ManagerFirstFragment(){} 41 | public View onCreateView(LayoutInflater inflater, ViewGroup container, 42 | Bundle savedInstanceState) { 43 | View view = inflater.inflate(R.layout.fragment_manager_first, container, false); 44 | recyclerView = (RecyclerView) view.findViewById(R.id.recycler_view); 45 | emptyText = (TextView) view.findViewById(R.id.empty_text); 46 | add = (Button) view.findViewById(R.id.add); 47 | CourseList = course.getCourse(); 48 | if(CourseList==null){ 49 | emptyText.setVisibility(View.VISIBLE); 50 | recyclerView.setVisibility(View.GONE); 51 | }else{ 52 | LinearLayoutManager layoutManager = new LinearLayoutManager(context); 53 | recyclerView.setLayoutManager(layoutManager); 54 | CourseAdapter adapter = new CourseAdapter(CourseList); 55 | recyclerView.setAdapter(adapter); 56 | DividerItemDecoration mDividerItemDecoration = new DividerItemDecoration(recyclerView.getContext(),layoutManager.getOrientation()); 57 | recyclerView.addItemDecoration(mDividerItemDecoration); 58 | } 59 | 60 | add.setOnClickListener(new View.OnClickListener(){ 61 | public void onClick(View v) { 62 | //跳转到添加课程页面 63 | Intent intent = new Intent(context, AddCourseActivity.class); 64 | startActivity(intent); 65 | } 66 | }); 67 | 68 | 69 | 70 | return view; 71 | } 72 | public void onResume(){ 73 | super.onResume(); 74 | CourseList = course.getCourse(); 75 | if(CourseList==null){ 76 | emptyText.setVisibility(View.VISIBLE); 77 | recyclerView.setVisibility(View.GONE); 78 | }else{ 79 | emptyText.setVisibility(View.GONE); 80 | recyclerView.setVisibility(View.VISIBLE); 81 | LinearLayoutManager layoutManager = new LinearLayoutManager(context); 82 | recyclerView.setLayoutManager(layoutManager); 83 | CourseAdapter adapter = new CourseAdapter(CourseList); 84 | recyclerView.setAdapter(adapter); 85 | DividerItemDecoration mDividerItemDecoration = new DividerItemDecoration(recyclerView.getContext(),layoutManager.getOrientation()); 86 | recyclerView.addItemDecoration(mDividerItemDecoration); 87 | } 88 | } 89 | } 90 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Fragment/ManagerSecondFragment.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Fragment; 2 | 3 | import android.app.AlertDialog; 4 | import android.content.DialogInterface; 5 | import android.support.v4.app.Fragment; 6 | import android.content.Context; 7 | import android.os.Bundle; 8 | import android.view.LayoutInflater; 9 | import android.view.View; 10 | import android.view.ViewGroup; 11 | import android.widget.Button; 12 | import android.widget.EditText; 13 | import android.widget.Toast; 14 | 15 | import com.clutch.student.AddCourseActivity; 16 | import com.clutch.student.Dao.ScoreDao; 17 | import com.clutch.student.EditCheck; 18 | import com.clutch.student.Entity.Score; 19 | import com.clutch.student.MainActivity; 20 | import com.clutch.student.MyApplication; 21 | import com.clutch.student.R; 22 | 23 | /** 24 | * Created by clutchyu on 2018/3/27. 25 | * 以管理员身份登入系统的第二个界面，修改学生选课成绩 26 | */ 27 | 28 | public class ManagerSecondFragment extends Fragment { 29 | static Context context = MyApplication.getInstance(); 30 | private Score score = new Score(); 31 | private EditText studentText; 32 | private EditText courseText; 33 | private EditText creditText; 34 | public void ManagerSecondFragment(){} 35 | public View onCreateView(LayoutInflater inflater, ViewGroup container, 36 | Bundle savedInstanceState) { 37 | View view = inflater.inflate(R.layout.fragment_manager_second, container, false); 38 | studentText = (EditText)view.findViewById(R.id.editText); 39 | courseText = (EditText)view.findViewById(R.id.editText2); 40 | creditText = (EditText)view.findViewById(R.id.editText3); 41 | Button commit = (Button)view.findViewById(R.id.commit); 42 | Button cancel = (Button)view.findViewById(R.id.cancel_s); 43 | commit.setOnClickListener(new View.OnClickListener(){ 44 | public void onClick(View v){ 45 | if(!EditCheck.CheckInt(studentText.getText().toString(),"学生学号",10000,99999)){ 46 | Toast.makeText(v.getContext(),EditCheck.getWarning(),Toast.LENGTH_SHORT).show(); 47 | } 48 | else if(!EditCheck.CheckInt(courseText.getText().toString(),"课程号",10000,99999)){ 49 | Toast.makeText(v.getContext(),EditCheck.getWarning(),Toast.LENGTH_SHORT).show(); 50 | } 51 | else if(!EditCheck.CheckInt(creditText.getText().toString(),"成绩",0,100)){ 52 | Toast.makeText(v.getContext(),EditCheck.getWarning(),Toast.LENGTH_SHORT).show(); 53 | } 54 | else if(writeDatabase()){ 55 | String word = "录入成功！"; 56 | studentText.setText(""); 57 | courseText.setText(""); 58 | creditText.setText(""); 59 | Toast.makeText(v.getContext(),word, Toast.LENGTH_SHORT).show(); 60 | }else{ 61 | String word = "录入失败\n不存在此学生或此学生未选课"; 62 | Toast.makeText(v.getContext(),word, Toast.LENGTH_SHORT).show(); 63 | } 64 | } 65 | }); 66 | cancel.setOnClickListener(new View.OnClickListener(){ 67 | public void onClick(View v){ 68 | //清空输入框 69 | studentText.setText(""); 70 | courseText.setText(""); 71 | creditText.setText(""); 72 | 73 | } 74 | }); 75 | 76 | 77 | return view; 78 | } 79 | 80 | public boolean writeDatabase(){ 81 | ScoreDao scoreDao = new ScoreDao(MyApplication.getInstance()); 82 | int studentId = Integer.parseInt(studentText.getText().toString()); 83 | int courseId = Integer.parseInt(courseText.getText().toString()); 84 | int grade = Integer.parseInt(creditText.getText().toString()); 85 | score.setStudentId(studentId); 86 | score.setCourseId(courseId); 87 | score.setGrade(grade); 88 | boolean flag = scoreDao.writeScore(score); 89 | if(flag){ 90 | return true; 91 | } 92 | else { 93 | return false; 94 | } 95 | } 96 | } 97 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Fragment/ManagerThirdFragment.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Fragment; 2 | 3 | import android.content.Context; 4 | import android.os.Bundle; 5 | import android.support.v4.app.Fragment; 6 | import android.view.LayoutInflater; 7 | import android.view.View; 8 | import android.view.ViewGroup; 9 | import android.widget.Button; 10 | import android.widget.EditText; 11 | import android.widget.RadioButton; 12 | import android.widget.Toast; 13 | 14 | import com.clutch.student.Dao.StudentDao; 15 | import com.clutch.student.Dao.UserDao; 16 | import com.clutch.student.EditCheck; 17 | import com.clutch.student.Entity.Student; 18 | import com.clutch.student.MyApplication; 19 | import com.clutch.student.R; 20 | 21 | /** 22 | * Created by clutchyu on 2018/3/29. 23 | * 以管理员身份登入系统的第三个界面，添加学生 24 | */ 25 | 26 | public class ManagerThirdFragment extends Fragment { 27 | static Context context = MyApplication.getInstance(); 28 | private EditText id; 29 | private EditText name; 30 | private RadioButton mMaleRb; 31 | private RadioButton mFamaleRb; 32 | private EditText age; 33 | private EditText phone; 34 | public ManagerThirdFragment() { 35 | } 36 | 37 | public View onCreateView(LayoutInflater inflater, ViewGroup container, 38 | Bundle savedInstanceState) { 39 | View view = inflater.inflate(R.layout.fragment_manager_third, container, false); 40 | id = (EditText)view.findViewById(R.id.id_t); 41 | Button save = (Button)view.findViewById(R.id.save_t); 42 | Button cancel = (Button)view.findViewById(R.id.cancel_t); 43 | name = (EditText)view.findViewById(R.id.name_t); 44 | mMaleRb = (RadioButton)view.findViewById(R.id.male_rb_t); 45 | mFamaleRb = (RadioButton)view.findViewById(R.id.famale_rb_t); 46 | age = (EditText)view.findViewById(R.id.age_t); 47 | phone = (EditText)view.findViewById(R.id.phone_t); 48 | save.setOnClickListener(new View.OnClickListener(){ 49 | public void onClick(View v){ 50 | String sname = name.getText().toString(); 51 | String ssex =""; 52 | if (mMaleRb.isChecked()){ 53 | ssex="男"; 54 | } 55 | else if (mFamaleRb.isChecked()){ 56 | ssex="女"; 57 | } 58 | String sage = age.getText().toString(); 59 | String sphone = phone.getText().toString(); 60 | if(!EditCheck.CheckInt(id.getText().toString(),"学号",10000,99999)){ 61 | Toast.makeText(v.getContext(),EditCheck.getWarning(),Toast.LENGTH_SHORT).show(); 62 | } 63 | else if(!EditCheck.CheckString(sname,"名字",6)){ 64 | Toast.makeText(v.getContext(),EditCheck.getWarning(),Toast.LENGTH_SHORT).show(); 65 | } 66 | else if(!mMaleRb.isChecked()&&!mFamaleRb.isChecked()){ 67 | Toast.makeText(v.getContext(),"性别不能为空！",Toast.LENGTH_SHORT).show(); 68 | } 69 | else if(!EditCheck.CheckInt(sage,"年龄",10,60)){ 70 | Toast.makeText(v.getContext(),EditCheck.getWarning(),Toast.LENGTH_SHORT).show(); 71 | } 72 | else if(!EditCheck.CheckString(sphone,"电话",15)){ 73 | Toast.makeText(v.getContext(),EditCheck.getWarning(),Toast.LENGTH_SHORT).show(); 74 | } 75 | else { 76 | int sid = Integer.parseInt(id.getText().toString()); 77 | Student student = new Student(sid, sname, ssex, Integer.parseInt(sage), sphone, R.drawable.health); 78 | if(writeDatabase(student)){ 79 | Toast.makeText(v.getContext(),"添加学生信息成功！",Toast.LENGTH_SHORT).show(); 80 | id.setText(""); 81 | name.setText(""); 82 | age.setText(""); 83 | phone.setText(""); 84 | mFamaleRb.setChecked(false); 85 | mMaleRb.setChecked(false); 86 | }else{ 87 | Toast.makeText(v.getContext(),"写入失败，请重试！（可能原因为学号重复）",Toast.LENGTH_SHORT).show(); 88 | } 89 | 90 | } 91 | } 92 | }); 93 | cancel.setOnClickListener(new View.OnClickListener(){ 94 | public void onClick(View v){ 95 | //清空输入框 96 | id.setText(""); 97 | name.setText(""); 98 | age.setText(""); 99 | phone.setText(""); 100 | mFamaleRb.setChecked(false); 101 | mMaleRb.setChecked(false); 102 | } 103 | }); 104 | return view; 105 | } 106 | public boolean writeDatabase(Student student){ 107 | Context context = MyApplication.getInstance(); 108 | StudentDao stuDao = new StudentDao(context); 109 | UserDao user = new UserDao(context); 110 | if(stuDao.insertStudent(student)) { 111 | //插入学生信息后，设置默认登录密码为123456，账号为学号 112 | user.insertLog(student.getId(),"123456"); 113 | return true; 114 | } 115 | else 116 | return false; 117 | } 118 | 119 | } -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Fragment/SecondFragment.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Fragment; 2 | 3 | /** 4 | * Created by clutch on 2018/3/17. 5 | * BottomNavigationView对应的第二个Fragment 6 | * 用于学生选课，学生点击对应课程即可提示选课成功 7 | */ 8 | 9 | import android.content.Context; 10 | import android.os.Bundle; 11 | import android.support.v4.app.Fragment; 12 | import android.support.v7.widget.DividerItemDecoration; 13 | import android.support.v7.widget.LinearLayoutManager; 14 | import android.support.v7.widget.RecyclerView; 15 | import android.view.LayoutInflater; 16 | import android.view.View; 17 | import android.view.ViewGroup; 18 | import android.widget.TextView; 19 | 20 | import com.clutch.student.Adapter.ScoreAdapter; 21 | import com.clutch.student.Dao.ScoreDao; 22 | import com.clutch.student.Entity.Course; 23 | import com.clutch.student.MainActivity; 24 | import com.clutch.student.MyApplication; 25 | import com.clutch.student.R; 26 | import java.util.List; 27 | 28 | 29 | 30 | 31 | public class SecondFragment extends Fragment { 32 | static Context context = MyApplication.getInstance(); 33 | private static ScoreDao uncourse = new ScoreDao(context); //未选的课程 34 | private static RecyclerView recyclerView_undo; 35 | private static List undoList; 36 | private static ScoreAdapter adapter; 37 | private static TextView emptyText; 38 | public SecondFragment() { 39 | // Required empty public constructor 40 | } 41 | 42 | 43 | @Override 44 | public View onCreateView(LayoutInflater inflater, ViewGroup container, 45 | Bundle savedInstanceState) { 46 | // Inflate the layout for this fragment 47 | View view = inflater.inflate(R.layout.fragment_second, container, false); 48 | recyclerView_undo = (RecyclerView) view.findViewById(R.id.recycler_undo); 49 | emptyText = (TextView) view.findViewById(R.id.empty_text) ; 50 | undoList = uncourse.getUnCourse(MainActivity.getStudentId()); 51 | if(undoList==null){ 52 | emptyText.setVisibility(View.VISIBLE); 53 | recyclerView_undo.setVisibility(View.GONE); 54 | }else { 55 | //StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(2,StaggeredGridLayoutManager.VERTICAL); 56 | LinearLayoutManager layoutManager = new LinearLayoutManager(context); 57 | recyclerView_undo.setLayoutManager(layoutManager); 58 | ScoreAdapter adapter = new ScoreAdapter(undoList); 59 | recyclerView_undo.setAdapter(adapter); 60 | DividerItemDecoration mDividerItemDecoration = new DividerItemDecoration(recyclerView_undo.getContext(),layoutManager.getOrientation()); 61 | recyclerView_undo.addItemDecoration(mDividerItemDecoration); 62 | } 63 | return view; 64 | } 65 | 66 | /** 67 | * 刷新数据，点击对应课程在Adapter中调用该函数实现页面刷新 68 | */ 69 | public static void updata() { 70 | undoList = uncourse.getUnCourse(MainActivity.getStudentId()); 71 | if(undoList==null){ 72 | emptyText.setVisibility(View.VISIBLE); 73 | recyclerView_undo.setVisibility(View.GONE); 74 | }else { 75 | LinearLayoutManager layoutManager = new LinearLayoutManager(context); 76 | recyclerView_undo.setLayoutManager(layoutManager); 77 | ScoreAdapter adapter = new ScoreAdapter(undoList); 78 | recyclerView_undo.setAdapter(adapter); 79 | DividerItemDecoration mDividerItemDecoration = new DividerItemDecoration(recyclerView_undo.getContext(),layoutManager.getOrientation()); 80 | recyclerView_undo.addItemDecoration(mDividerItemDecoration); 81 | 82 | } 83 | } 84 | } 85 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/Fragment/ThirdFragment.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student.Fragment; 2 | 3 | /** 4 | * Created by asus on 2018/3/17. 5 | * BottomNavigationView对应的第三个Fragment 6 | * 显示个人信息 7 | * 从修改信息的界面返回ThirdFragment时，状态为onResume,重写onResume方法实现刷新数据。 8 | */ 9 | 10 | import android.content.Context; 11 | import android.content.Intent; 12 | import android.os.Bundle; 13 | import android.support.v4.app.Fragment; 14 | import android.support.v7.widget.DividerItemDecoration; 15 | import android.support.v7.widget.LinearLayoutManager; 16 | import android.support.v7.widget.RecyclerView; 17 | import android.view.LayoutInflater; 18 | import android.view.View; 19 | import android.view.ViewGroup; 20 | import android.widget.Button; 21 | 22 | import com.clutch.student.Adapter.StudentAdapter; 23 | import com.clutch.student.Dao.StudentDao; 24 | import com.clutch.student.Entity.Student_info; 25 | import com.clutch.student.MainActivity; 26 | import com.clutch.student.MyApplication; 27 | import com.clutch.student.R; 28 | import com.clutch.student.StudentChangeActivity; 29 | 30 | import java.util.List; 31 | 32 | 33 | 34 | public class ThirdFragment extends Fragment { 35 | Context context = MyApplication.getInstance(); 36 | private StudentDao student = new StudentDao(context); 37 | private List StudentList = student.getStudent(MainActivity.getStudentId()); 38 | private RecyclerView recyclerView; 39 | private int studentId = MainActivity.getStudentId(); 40 | public ThirdFragment() { 41 | // Required empty public constructor 42 | } 43 | 44 | 45 | @Override 46 | public View onCreateView(LayoutInflater inflater, ViewGroup container, 47 | final Bundle savedInstanceState) { 48 | // Inflate the layout for this fragment 49 | View view = inflater.inflate(R.layout.fragment_third, container, false); 50 | //initCourse(); 51 | recyclerView = (RecyclerView) view.findViewById(R.id.recycler_view); 52 | //StaggeredGridLayoutManager layoutManager = new StaggeredGridLayoutManager(2,StaggeredGridLayoutManager.VERTICAL); 53 | LinearLayoutManager layoutManager = new LinearLayoutManager(context); 54 | recyclerView.setLayoutManager(layoutManager); 55 | StudentAdapter adapter = new StudentAdapter(StudentList); 56 | recyclerView.setAdapter(adapter); 57 | DividerItemDecoration mDividerItemDecoration = new DividerItemDecoration(recyclerView.getContext(),layoutManager.getOrientation()); 58 | recyclerView.addItemDecoration(mDividerItemDecoration); 59 | 60 | Button button = (Button) view.findViewById (R.id.click); 61 | button.setOnClickListener(new View.OnClickListener(){ 62 | public void onClick(View v) { 63 | 64 | Intent intent = new Intent(context, StudentChangeActivity.class); 65 | intent.putExtra("id",studentId); 66 | startActivity(intent); 67 | 68 | } 69 | 70 | }); 71 | 72 | // Inflate the layout for this fragment 73 | return view; 74 | } 75 | public void onResume(){ 76 | super.onResume(); 77 | StudentList = student.getStudent(MainActivity.getStudentId()); 78 | StudentAdapter adapter = new StudentAdapter(StudentList); 79 | recyclerView.setAdapter(adapter); 80 | 81 | } 82 | 83 | } -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/LoginActivity.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student; 2 | 3 | import android.app.AlertDialog; 4 | import android.content.Context; 5 | import android.content.DialogInterface; 6 | import android.content.Intent; 7 | import android.support.v7.app.AppCompatActivity; 8 | import android.os.Bundle; 9 | import android.view.View; 10 | import android.widget.Button; 11 | import android.widget.EditText; 12 | 13 | import com.clutch.student.Dao.MyDatabaseHelper; 14 | import com.clutch.student.Dao.UserDao; 15 | 16 | public class LoginActivity extends AppCompatActivity { 17 | private MyDatabaseHelper dbHelper; 18 | private EditText account; 19 | private EditText password; 20 | private Button log; 21 | private Button sign; 22 | 23 | @Override 24 | protected void onCreate(Bundle savedInstanceState) { 25 | super.onCreate(savedInstanceState); 26 | setContentView(R.layout.activity_login); 27 | dbHelper = new MyDatabaseHelper(this); 28 | dbHelper.getWritableDatabase(); 29 | account = findViewById(R.id.account); 30 | password = findViewById(R.id.password); 31 | log = findViewById(R.id.login); 32 | sign = findViewById(R.id.signin); 33 | final UserDao user = new UserDao(this); 34 | log.setOnClickListener(new View.OnClickListener() { //点击登录，跳转到MainActivity,传入对应id 35 | @Override 36 | public void onClick(View view) { 37 | String id_str = account.getText().toString(); 38 | // int id = Integer.parseInt(id_str); 39 | String passwd = password.getText().toString(); 40 | if(!EditCheck.CheckInt(id_str,"账号",0,99999)){ 41 | showNormalDialog(EditCheck.getWarning()); 42 | } 43 | else if(!EditCheck.CheckString(passwd,"密码",20)){ 44 | showNormalDialog(EditCheck.getWarning()); 45 | } 46 | else if(user.check(Integer.parseInt(id_str),passwd)){ //账号匹配成功,进入MainActivity 47 | Intent intent = new Intent(LoginActivity.this,MainActivity.class); 48 | intent.putExtra("id",Integer.parseInt(id_str)); 49 | startActivity(intent); 50 | finish(); 51 | }else{ //弹出错误提示框 52 | String word = "账号或密码错误！"; 53 | showNormalDialog(word); 54 | } 55 | 56 | } 57 | }); 58 | sign.setOnClickListener(new View.OnClickListener(){ 59 | public void onClick(View view){ 60 | Intent intent = new Intent(LoginActivity.this,ModifyPasswdActivity.class); 61 | startActivity(intent); 62 | } 63 | }); 64 | } 65 | 66 | private void showNormalDialog(String word){ 67 | 68 | final AlertDialog.Builder normalDialog = 69 | new AlertDialog.Builder(LoginActivity.this); 70 | normalDialog.setTitle("提示"); 71 | normalDialog.setMessage(word); 72 | normalDialog.setPositiveButton("确定", 73 | new DialogInterface.OnClickListener() { 74 | @Override 75 | public void onClick(DialogInterface dialog, int which) { 76 | normalDialog.setCancelable(true); 77 | //...To-do 78 | } 79 | }); 80 | 81 | // 显示 82 | normalDialog.show(); 83 | } 84 | } 85 | 86 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student; 2 | 3 | /** 4 | * Created by clutchyu on 2018/3/17. 5 | * 主界面，包含三个Fragment,以学生身份和管理员身份登入系统时对应界面不同 6 | */ 7 | 8 | import android.content.Context; 9 | import android.content.Intent; 10 | import android.os.Bundle; 11 | import android.support.annotation.NonNull; 12 | import android.support.design.widget.BottomNavigationView; 13 | import android.support.v4.view.ViewPager; 14 | import android.support.v7.app.AppCompatActivity; 15 | import android.util.Log; 16 | import android.view.Menu; 17 | import android.view.MenuItem; 18 | import com.clutch.student.Adapter.ViewPagerAdapter; 19 | import com.clutch.student.Fragment.FirstFragment; 20 | import com.clutch.student.Fragment.ManagerFirstFragment; 21 | import com.clutch.student.Fragment.ManagerSecondFragment; 22 | import com.clutch.student.Fragment.ManagerThirdFragment; 23 | import com.clutch.student.Fragment.SecondFragment; 24 | import com.clutch.student.Fragment.ThirdFragment; 25 | import com.clutch.student.Dao.MyDatabaseHelper; 26 | public class MainActivity extends AppCompatActivity { 27 | 28 | //dbHelper 29 | private MyDatabaseHelper dbHelper; 30 | private static int studentId; 31 | BottomNavigationView bottomNavigationView; 32 | //This is our viewPager 33 | private ViewPager viewPager; 34 | 35 | private ViewPagerAdapter adapter; 36 | //Fragments 37 | FirstFragment firstFragment; 38 | SecondFragment secondFragment; 39 | ThirdFragment thirdFragment; 40 | ManagerFirstFragment managerFirstFragment; 41 | ManagerSecondFragment managerSecondFragment; 42 | ManagerThirdFragment managerThirdFragment; 43 | MenuItem prevMenuItem; 44 | 45 | @Override 46 | protected void onCreate(Bundle savedInstanceState) { 47 | super.onCreate(savedInstanceState); 48 | setContentView(R.layout.activity_main); 49 | Intent intent = getIntent(); 50 | studentId = intent.getIntExtra("id",-1); 51 | //创建或打开数据库 52 | dbHelper = new MyDatabaseHelper(this); 53 | dbHelper.getWritableDatabase(); 54 | //Initializing viewPager 55 | viewPager = (ViewPager) findViewById(R.id.viewpager); 56 | 57 | //Initializing the bottomNavigationView 58 | bottomNavigationView = (BottomNavigationView)findViewById(R.id.bottom_navigation); 59 | 60 | bottomNavigationView.setOnNavigationItemSelectedListener( 61 | new BottomNavigationView.OnNavigationItemSelectedListener() { 62 | @Override 63 | public boolean onNavigationItemSelected(@NonNull MenuItem item) { 64 | switch (item.getItemId()) { 65 | case R.id.action_first: 66 | viewPager.setCurrentItem(0); 67 | break; 68 | case R.id.action_second: 69 | viewPager.setCurrentItem(1); 70 | break; 71 | case R.id.action_third: 72 | viewPager.setCurrentItem(2); 73 | break; 74 | } 75 | return false; 76 | } 77 | }); 78 | 79 | viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() { 80 | @Override 81 | public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { 82 | 83 | } 84 | 85 | @Override 86 | public void onPageSelected(int position) { 87 | if (prevMenuItem != null) { 88 | prevMenuItem.setChecked(false); 89 | } 90 | else 91 | { 92 | bottomNavigationView.getMenu().getItem(0).setChecked(false); 93 | } 94 | Log.d("page", "onPageSelected: "+position); 95 | bottomNavigationView.getMenu().getItem(position).setChecked(true); 96 | prevMenuItem = bottomNavigationView.getMenu().getItem(position); 97 | 98 | } 99 | 100 | @Override 101 | public void onPageScrollStateChanged(int state) { 102 | 103 | } 104 | }); 105 | 106 | 107 | 108 | setupViewPager(viewPager); 109 | } 110 | 111 | @Override 112 | public boolean onCreateOptionsMenu(Menu menu) { 113 | getMenuInflater().inflate(R.menu.main,menu); 114 | return true; 115 | } 116 | 117 | @Override 118 | public boolean onOptionsItemSelected(MenuItem item) { 119 | switch (item.getItemId()){ 120 | case R.id.switch_item: 121 | Intent intent = new Intent(MainActivity.this,LoginActivity.class); 122 | startActivity(intent); 123 | finish(); 124 | break; 125 | case R.id.quit_item: 126 | finish(); 127 | break; 128 | default: 129 | } 130 | return true; 131 | } 132 | 133 | public static int getStudentId(){ 134 | return studentId; 135 | } 136 | public Context context(){return this;} 137 | private void setupViewPager(ViewPager viewPager) { 138 | ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager()); 139 | if(getStudentId()==0){ 140 | managerFirstFragment=new ManagerFirstFragment(); 141 | managerSecondFragment=new ManagerSecondFragment(); 142 | managerThirdFragment=new ManagerThirdFragment(); 143 | adapter.addFragment(managerFirstFragment); 144 | adapter.addFragment(managerSecondFragment); 145 | adapter.addFragment(managerThirdFragment); 146 | }else { 147 | firstFragment = new FirstFragment(); 148 | secondFragment = new SecondFragment(); 149 | thirdFragment = new ThirdFragment(); 150 | adapter.addFragment(firstFragment); 151 | adapter.addFragment(secondFragment); 152 | adapter.addFragment(thirdFragment); 153 | } 154 | viewPager.setAdapter(adapter); 155 | } 156 | } -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/ModifyPasswdActivity.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student; 2 | 3 | import android.app.AlertDialog; 4 | import android.content.DialogInterface; 5 | import android.os.Handler; 6 | import android.renderscript.Script; 7 | import android.support.v7.app.AppCompatActivity; 8 | import android.os.Bundle; 9 | import android.view.View; 10 | import android.widget.Button; 11 | import android.widget.EditText; 12 | 13 | import com.clutch.student.Dao.UserDao; 14 | import com.clutch.student.Entity.User; 15 | 16 | public class ModifyPasswdActivity extends AppCompatActivity { 17 | private EditText account; 18 | private EditText passwdOld; 19 | private EditText passwdNew; 20 | 21 | @Override 22 | protected void onCreate(Bundle savedInstanceState) { 23 | super.onCreate(savedInstanceState); 24 | setContentView(R.layout.activity_modify_passwd); 25 | account = (EditText)findViewById(R.id.account_m); 26 | passwdOld = (EditText)findViewById(R.id.passwd_o); 27 | passwdNew = (EditText)findViewById(R.id.passwd_n); 28 | Button commit = (Button)findViewById(R.id.commit_m); 29 | Button cancel = (Button)findViewById(R.id.cancel_m); 30 | commit.setOnClickListener(new View.OnClickListener(){ 31 | public void onClick(View v){ 32 | String word; 33 | if(!EditCheck.CheckInt(account.getText().toString(),"账号",10000,99999)){ 34 | showNormalDialog(EditCheck.getWarning()); 35 | } 36 | else if(!EditCheck.CheckString(passwdOld.getText().toString(),"旧密码",20)) { 37 | showNormalDialog(EditCheck.getWarning()); 38 | } 39 | else if(!EditCheck.CheckString(passwdNew.getText().toString(),"新密码",20)){ 40 | showNormalDialog(EditCheck.getWarning()); 41 | } 42 | else { 43 | User user = new User(Integer.parseInt(account.getText().toString()),passwdOld.getText().toString()); 44 | String password = passwdNew.getText().toString(); 45 | if(writeDatabase(user,password)){ 46 | word = "修改密码成功！"; 47 | showNormalDialog(word); 48 | //延时1s 49 | Handler handler = new Handler(); 50 | handler.postDelayed(new Runnable() { 51 | @Override 52 | public void run() { 53 | finish(); 54 | } 55 | }, 1000); 56 | } 57 | else{ 58 | word="修改失败！账号与原密码不匹配！请重试："; 59 | showNormalDialog(word); 60 | } 61 | } 62 | 63 | } 64 | }); 65 | cancel.setOnClickListener(new View.OnClickListener(){ 66 | public void onClick(View v){ 67 | finish(); 68 | } 69 | }); 70 | } 71 | private void showNormalDialog(String word){ 72 | 73 | final AlertDialog.Builder normalDialog = 74 | new AlertDialog.Builder(ModifyPasswdActivity.this); 75 | normalDialog.setTitle("提示"); 76 | normalDialog.setMessage(word); 77 | normalDialog.setPositiveButton("确定", 78 | new DialogInterface.OnClickListener() { 79 | @Override 80 | public void onClick(DialogInterface dialog, int which) { 81 | normalDialog.setCancelable(true); 82 | //...To-do 83 | } 84 | }); 85 | 86 | // 显示 87 | normalDialog.show(); 88 | } 89 | private boolean writeDatabase(User user,String passwd){ 90 | UserDao userDao = new UserDao(MyApplication.getInstance()); 91 | if(userDao.modifyPasswd(user,passwd)) 92 | return true; 93 | else 94 | return false; 95 | } 96 | } 97 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/MyApplication.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student; 2 | import android.app.Application; 3 | 4 | import com.facebook.stetho.Stetho; 5 | /** 6 | * Created by clutchyu on 2018/3/17. 7 | */ 8 | 9 | public class MyApplication extends Application { 10 | private static MyApplication instance; 11 | public void onCreate() { 12 | super.onCreate(); 13 | instance = this; 14 | Stetho.initializeWithDefaults(this); 15 | } 16 | public static MyApplication getInstance(){ 17 | // 因为我们程序运行后，Application是首先初始化的，如果在这里不用判断instance是否为空 18 | return instance; 19 | } 20 | } 21 | -------------------------------------------------------------------------------- /app/src/main/java/com/clutch/student/StudentChangeActivity.java: -------------------------------------------------------------------------------- 1 | package com.clutch.student; 2 | /** 3 | * 修改个人信息界面 4 | */ 5 | 6 | import android.content.Context; 7 | import android.content.Intent; 8 | import android.support.v4.view.ViewPager; 9 | import android.support.v7.app.AppCompatActivity; 10 | import android.os.Bundle; 11 | import android.view.View; 12 | import android.widget.Button; 13 | import android.widget.EditText; 14 | import android.widget.RadioButton; 15 | import android.widget.RadioGroup; 16 | import android.widget.Toast; 17 | 18 | import com.clutch.student.Adapter.*; 19 | import com.clutch.student.Dao.StudentDao; 20 | import com.clutch.student.Entity.Student; 21 | 22 | 23 | public class StudentChangeActivity extends AppCompatActivity implements View.OnClickListener{ 24 | private EditText name; 25 | private RadioButton mMaleRb; 26 | private RadioButton mFamaleRb; 27 | private EditText age; 28 | private EditText phone; 29 | private int studentId; 30 | @Override 31 | protected void onCreate(Bundle savedInstanceState) { 32 | super.onCreate(savedInstanceState); 33 | setContentView(R.layout.activity_student_change); 34 | Intent intent = getIntent(); 35 | 36 | studentId = intent.getIntExtra("id",-1); 37 | Button save = (Button)findViewById(R.id.save); 38 | Button cancel = (Button)findViewById(R.id.cancel); 39 | name = (EditText)findViewById(R.id.name); 40 | //sex = (EditText)findViewById(R.id.sex); 41 | mMaleRb = (RadioButton)findViewById(R.id.male_rb); 42 | mFamaleRb = (RadioButton)findViewById(R.id.famale_rb); 43 | age = (EditText)findViewById(R.id.age); 44 | phone = (EditText)findViewById(R.id.phone); 45 | save.setOnClickListener(this); 46 | cancel.setOnClickListener(new View.OnClickListener(){ 47 | public void onClick(View v){ 48 | finish(); 49 | } 50 | 51 | }); 52 | } 53 | public void onClick(View v){ 54 | switch(v.getId()){ 55 | case R.id.save: 56 | String sname = name.getText().toString(); 57 | String ssex =""; 58 | if (mMaleRb.isChecked()){ 59 | ssex="男"; 60 | } 61 | else if (mFamaleRb.isChecked()){ 62 | ssex="女"; 63 | } 64 | String sage = age.getText().toString(); 65 | String sphone = phone.getText().toString(); 66 | if(!EditCheck.CheckString(sname,"名字",6)){ 67 | Toast.makeText(v.getContext(),EditCheck.getWarning(),Toast.LENGTH_SHORT).show(); 68 | break; 69 | } 70 | else if(!mMaleRb.isChecked()&&!mFamaleRb.isChecked()){ 71 | Toast.makeText(v.getContext(),"性别不能为空！",Toast.LENGTH_SHORT).show(); 72 | break; 73 | } 74 | else if(!EditCheck.CheckInt(sage,"年龄",10,60)){ 75 | Toast.makeText(v.getContext(),EditCheck.getWarning(),Toast.LENGTH_SHORT).show(); 76 | break; 77 | } 78 | else if(!EditCheck.CheckString(sphone,"电话",15)){ 79 | Toast.makeText(v.getContext(),EditCheck.getWarning(),Toast.LENGTH_SHORT).show(); 80 | break; 81 | } 82 | Student student = new Student(studentId,sname,ssex,Integer.parseInt(sage),sphone,R.drawable.health); 83 | writeDatabase(student); 84 | finish(); 85 | break; 86 | case R.id.cancel: 87 | finish(); 88 | break; 89 | default: 90 | break; 91 | } 92 | } 93 | 94 | /** 95 | * 写入数据库 96 | */ 97 | private void writeDatabase(Student student){ 98 | Context context = MyApplication.getInstance(); 99 | StudentDao stuDao = new StudentDao(context); 100 | stuDao.updateStudent(student); 101 | 102 | } 103 | } 104 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-hdpi/ic_call.png: -------------------------------------------------------------------------------- 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