├── app ├── .gitignore ├── src │ └── main │ │ ├── res │ │ ├── values │ │ │ ├── strings.xml │ │ │ ├── colors.xml │ │ │ ├── dimens.xml │ │ │ └── styles.xml │ │ ├── mipmap-hdpi │ │ │ └── ic_launcher.png │ │ ├── mipmap-mdpi │ │ │ └── ic_launcher.png │ │ ├── drawable-hdpi │ │ │ ├── ic_docs_48dp.png │ │ │ ├── ic_keep_48dp.png │ │ │ ├── ic_drive_48dp.png │ │ │ ├── ic_gmail_48dp.png │ │ │ ├── ic_google_48dp.png │ │ │ ├── ic_inbox_48dp.png │ │ │ ├── ic_photos_48dp.png │ │ │ ├── ic_sheets_48dp.png │ │ │ ├── ic_slides_48dp.png │ │ │ ├── ic_hangouts_48dp.png │ │ │ └── ic_messenger_48dp.png │ │ ├── drawable-mdpi │ │ │ ├── ic_docs_48dp.png │ │ │ ├── ic_keep_48dp.png │ │ │ ├── ic_drive_48dp.png │ │ │ ├── ic_gmail_48dp.png │ │ │ ├── ic_google_48dp.png │ │ │ ├── ic_inbox_48dp.png │ │ │ ├── ic_photos_48dp.png │ │ │ ├── ic_sheets_48dp.png │ │ │ ├── ic_slides_48dp.png │ │ │ ├── ic_hangouts_48dp.png │ │ │ └── ic_messenger_48dp.png │ │ ├── mipmap-xhdpi │ │ │ └── ic_launcher.png │ │ ├── mipmap-xxhdpi │ │ │ └── ic_launcher.png │ │ ├── mipmap-xxxhdpi │ │ │ └── ic_launcher.png │ │ ├── drawable-xhdpi │ │ │ ├── ic_docs_48dp.png │ │ │ ├── ic_drive_48dp.png │ │ │ ├── ic_gmail_48dp.png │ │ │ ├── ic_inbox_48dp.png │ │ │ ├── ic_keep_48dp.png │ │ │ ├── ic_google_48dp.png │ │ │ ├── ic_hangouts_48dp.png │ │ │ ├── ic_photos_48dp.png │ │ │ ├── ic_sheets_48dp.png │ │ │ ├── ic_slides_48dp.png │ │ │ └── ic_messenger_48dp.png │ │ ├── drawable-xxhdpi │ │ │ ├── ic_docs_48dp.png │ │ │ ├── ic_keep_48dp.png │ │ │ ├── ic_drive_48dp.png │ │ │ ├── ic_gmail_48dp.png │ │ │ ├── ic_google_48dp.png │ │ │ ├── ic_inbox_48dp.png │ │ │ ├── ic_photos_48dp.png │ │ │ ├── ic_sheets_48dp.png │ │ │ ├── ic_slides_48dp.png │ │ │ ├── ic_hangouts_48dp.png │ │ │ └── ic_messenger_48dp.png │ │ ├── drawable-xxxhdpi │ │ │ ├── ic_docs_48dp.png │ │ │ ├── ic_drive_48dp.png │ │ │ ├── ic_gmail_48dp.png │ │ │ ├── ic_google_48dp.png │ │ │ ├── ic_inbox_48dp.png │ │ │ ├── ic_keep_48dp.png │ │ │ ├── ic_photos_48dp.png │ │ │ ├── ic_sheets_48dp.png │ │ │ ├── ic_slides_48dp.png │ │ │ ├── ic_hangouts_48dp.png │ │ │ └── ic_messenger_48dp.png │ │ ├── menu │ │ │ └── main.xml │ │ ├── values-w820dp │ │ │ └── dimens.xml │ │ ├── drawable │ │ │ └── ic_rate.xml │ │ └── layout │ │ │ ├── adapter_snap.xml │ │ │ ├── adapter_snap_vertical.xml │ │ │ ├── activity_main.xml │ │ │ ├── adapter.xml │ │ │ └── adapter_vertical.xml │ │ ├── java │ │ └── com │ │ │ └── github │ │ │ └── rubensousa │ │ │ └── recyclerviewsnap │ │ │ ├── App.java │ │ │ ├── Snap.java │ │ │ ├── Adapter.java │ │ │ ├── MainActivity.java │ │ │ └── SnapAdapter.java │ │ └── AndroidManifest.xml ├── proguard-rules.pro └── build.gradle ├── gravitysnaphelper ├── .gitignore ├── src │ └── main │ │ ├── AndroidManifest.xml │ │ ├── res │ │ ├── values │ │ │ ├── strings.xml │ │ │ └── attrs.xml │ │ └── values-ldrtl │ │ │ └── attrs.xml │ │ └── java │ │ └── com │ │ └── github │ │ └── rubensousa │ │ └── gravitysnaphelper │ │ └── GravitySnapHelper.java ├── proguard-rules.pro └── build.gradle ├── settings.gradle ├── screens ├── snap_final.gif └── snap_googleplay.gif ├── .gitignore ├── gradle ├── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradle-bintray-upload.gradle └── gradle-mvn-push.gradle ├── gradle.properties ├── README.md ├── gradlew.bat ├── gradlew └── LICENSE.txt /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /gravitysnaphelper/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app', ':gravitysnaphelper' -------------------------------------------------------------------------------- /gravitysnaphelper/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | -------------------------------------------------------------------------------- /screens/snap_final.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/lingarajsankaravelu/RecyclerViewSnap/master/screens/snap_final.gif -------------------------------------------------------------------------------- /app/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | RecyclerViewSnap 3 | 4 | -------------------------------------------------------------------------------- /screens/snap_googleplay.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/lingarajsankaravelu/RecyclerViewSnap/master/screens/snap_googleplay.gif -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/workspace.xml 5 | /.idea/libraries 6 | .DS_Store 7 | /build 8 | /captures 9 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/lingarajsankaravelu/RecyclerViewSnap/master/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gravitysnaphelper/src/main/res/values/strings.xml: -------------------------------------------------------------------------------- 1 | 2 | GravitySnapHelper 3 | 4 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- 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-------------------------------------------------------------------------------- 1 | 2 | 3 | true 4 | -------------------------------------------------------------------------------- /app/src/main/res/values/colors.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | #3F51B5 4 | #303F9F 5 | #FF4081 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/values/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 16dp 4 | 16dp 5 | 6 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Tue Aug 30 22:19:09 WEST 2016 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-2.14.1-all.zip 7 | -------------------------------------------------------------------------------- /app/src/main/res/menu/main.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 8 | -------------------------------------------------------------------------------- /app/src/main/res/values-w820dp/dimens.xml: -------------------------------------------------------------------------------- 1 | 2 | 5 | 64dp 6 | 7 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_rate.xml: -------------------------------------------------------------------------------- 1 | 6 | 9 | 10 | -------------------------------------------------------------------------------- /app/src/main/java/com/github/rubensousa/recyclerviewsnap/App.java: -------------------------------------------------------------------------------- 1 | package com.github.rubensousa.recyclerviewsnap; 2 | 3 | 4 | public class App { 5 | 6 | private int mDrawable; 7 | private String mName; 8 | private float mRating; 9 | 10 | public App(String name, int drawable, float rating) { 11 | mName = name; 12 | mDrawable = drawable; 13 | mRating = rating; 14 | } 15 | 16 | public float getRating() { 17 | return mRating; 18 | } 19 | 20 | public int getDrawable() { 21 | return mDrawable; 22 | } 23 | 24 | public String getName() { 25 | return mName; 26 | } 27 | } 28 | 29 | -------------------------------------------------------------------------------- /app/src/main/java/com/github/rubensousa/recyclerviewsnap/Snap.java: -------------------------------------------------------------------------------- 1 | package com.github.rubensousa.recyclerviewsnap; 2 | 3 | 4 | import java.util.List; 5 | 6 | public class Snap { 7 | 8 | private int mGravity; 9 | private String mText; 10 | private List mApps; 11 | 12 | public Snap(int gravity, String text, List apps) { 13 | mGravity = gravity; 14 | mText = text; 15 | mApps = apps; 16 | } 17 | 18 | public String getText(){ 19 | return mText; 20 | } 21 | 22 | public int getGravity(){ 23 | return mGravity; 24 | } 25 | 26 | public List getApps(){ 27 | return mApps; 28 | } 29 | 30 | } 31 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in /home/ruben/Android/Sdk/tools/proguard/proguard-android.txt 4 | # You can edit the include path and order by changing the proguardFiles 5 | # directive in build.gradle. 6 | # 7 | # For more details, see 8 | # http://developer.android.com/guide/developing/tools/proguard.html 9 | 10 | # Add any project specific keep options here: 11 | 12 | # If your project uses WebView with JS, uncomment the following 13 | # and specify the fully qualified class name to the JavaScript interface 14 | # class: 15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 16 | # public *; 17 | #} 18 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | -------------------------------------------------------------------------------- /gravitysnaphelper/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # By default, the flags in this file are appended to flags specified 3 | # in /home/ruben/Android/Sdk/tools/proguard/proguard-android.txt 4 | # You can edit the include path and order by changing the proguardFiles 5 | # directive in build.gradle. 6 | # 7 | # For more details, see 8 | # http://developer.android.com/guide/developing/tools/proguard.html 9 | 10 | # Add any project specific keep options here: 11 | 12 | # If your project uses WebView with JS, uncomment the following 13 | # and specify the fully qualified class name to the JavaScript interface 14 | # class: 15 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 16 | # public *; 17 | #} 18 | -------------------------------------------------------------------------------- /gravitysnaphelper/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.library' 2 | 3 | android { 4 | compileSdkVersion 25 5 | buildToolsVersion "25.0.0" 6 | 7 | defaultConfig { 8 | minSdkVersion 15 9 | targetSdkVersion 25 10 | versionCode 1 11 | versionName "1.0" 12 | } 13 | buildTypes { 14 | release { 15 | minifyEnabled false 16 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 17 | } 18 | } 19 | } 20 | 21 | dependencies { 22 | compile fileTree(dir: 'libs', include: ['*.jar']) 23 | compile 'com.android.support:recyclerview-v7:25.0.0' 24 | } 25 | 26 | apply from: rootProject.file('gradle/gradle-mvn-push.gradle') 27 | apply from: rootProject.file('gradle/gradle-bintray-upload.gradle') -------------------------------------------------------------------------------- /app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 10 | 11 | 19 | 20 | 21 | -------------------------------------------------------------------------------- /gradle/gradle-bintray-upload.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.jfrog.bintray' 2 | 3 | version = VERSION_NAME 4 | 5 | Properties properties = new Properties() 6 | properties.load(project.rootProject.file('local.properties').newDataInputStream()) 7 | 8 | bintray { 9 | user = properties.getProperty("bintray.user") 10 | key = properties.getProperty("bintray.apikey") 11 | 12 | configurations = ['archives'] 13 | pkg { 14 | repo = 'maven' 15 | name = POM_ARTIFACT_ID 16 | desc = POM_DESCRIPTION 17 | websiteUrl = POM_URL 18 | vcsUrl = POM_SCM_CONNECTION 19 | licenses = POM_LICENSES 20 | publish = true 21 | publicDownloadNumbers = true 22 | version { 23 | gpg { 24 | sign = true 25 | passphrase = properties.getProperty("bintray.gpg.password") 26 | } 27 | } 28 | } 29 | } 30 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 25 5 | buildToolsVersion "25.0.0" 6 | 7 | defaultConfig { 8 | applicationId "com.github.rubensousa.recyclerviewsnap" 9 | minSdkVersion 15 10 | targetSdkVersion 25 11 | versionCode 1 12 | versionName "1.0" 13 | } 14 | buildTypes { 15 | release { 16 | minifyEnabled false 17 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 18 | } 19 | } 20 | } 21 | 22 | dependencies { 23 | compile fileTree(dir: 'libs', include: ['*.jar']) 24 | compile 'com.android.support:design:25.0.0' 25 | compile 'com.android.support:appcompat-v7:25.0.0' 26 | compile 'com.android.support:recyclerview-v7:25.0.0' 27 | compile 'com.android.support:cardview-v7:25.0.0' 28 | compile project (':gravitysnaphelper') 29 | } 30 | -------------------------------------------------------------------------------- /app/src/main/res/layout/adapter_snap.xml: -------------------------------------------------------------------------------- 1 | 2 | 6 | 7 | 18 | 19 | 26 | -------------------------------------------------------------------------------- /app/src/main/res/layout/adapter_snap_vertical.xml: -------------------------------------------------------------------------------- 1 | 2 | 6 | 7 | 18 | 19 | 26 | 27 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_main.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 | 12 | 13 | 14 | 18 | 19 | 20 | 21 | 25 | 26 | 32 | 33 | 34 | 35 | -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | 3 | # IDE (e.g. Android Studio) users: 4 | # Gradle settings configured through the IDE *will override* 5 | # any settings specified in this file. 6 | 7 | # For more details on how to configure your build environment visit 8 | # http://www.gradle.org/docs/current/userguide/build_environment.html 9 | 10 | # Specifies the JVM arguments used for the daemon process. 11 | # The setting is particularly useful for tweaking memory settings. 12 | # Default value: -Xmx10248m -XX:MaxPermSize=256m 13 | # org.gradle.jvmargs=-Xmx2048m -XX:MaxPermSize=512m -XX:+HeapDumpOnOutOfMemoryError -Dfile.encoding=UTF-8 14 | 15 | # When configured, Gradle will run in incubating parallel mode. 16 | # This option should only be used with decoupled projects. More details, visit 17 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects 18 | # org.gradle.parallel=true 19 | GROUP=com.github.rubensousa 20 | VERSION_NAME=1.0 21 | 22 | POM_ARTIFACT_ID=gravitysnaphelper 23 | POM_NAME=GravitySnapHelper 24 | POM_DESCRIPTION=A SnapHelper that snaps the RecyclerView to an edge 25 | POM_PACKAGING=aar 26 | 27 | POM_URL=https://github.com/rubensousa/RecyclerViewSnap 28 | POM_SCM_URL=https://github.com/rubensousa/RecyclerViewSnap 29 | POM_SCM_CONNECTION=scm:git:git://github.com/rubensousa/RecyclerViewSnap.git 30 | POM_SCM_DEV_CONNECTION=scm:git:ssh://git@github.com/rubensousa/RecyclerViewSnap.git 31 | 32 | POM_LICENCE_NAME=The Apache Software License, Version 2.0 33 | POM_LICENCE_URL=http://www.apache.org/licenses/LICENSE-2.0.txt 34 | POM_LICENCE_DIST=repo 35 | 36 | POM_LICENSES = ["Apache-2.0"] 37 | 38 | POM_DEVELOPER_ID=rubensousa 39 | POM_DEVELOPER_NAME=Rúben Sousa -------------------------------------------------------------------------------- /app/src/main/res/layout/adapter.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 | 13 | 14 | 22 | 23 | 33 | 34 | 47 | 48 | 49 | 50 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # RecyclerViewSnap 2 | 3 | RecyclerView snapping example with SnapHelper 4 | 5 | 6 | 7 | ## How to 8 | 9 | If you need snapping support to start, top, end or bottom, use GravitySnapHelper. 10 | 11 | Add this to your build.gradle: 12 | 13 | ```groovy 14 | compile 'com.github.rubensousa:gravitysnaphelper:1.0' 15 | ``` 16 | 17 | Otherwise, center snapping is done with LinearSnapHelper (part of the recyclerview-v7 package). 18 | 19 | ### Snapping center: 20 | 21 | ```java 22 | SnapHelper snapHelper = new LinearSnapHelper(); 23 | snapHelper.attachToRecyclerView(recyclerView); 24 | ``` 25 | 26 | ### Snapping start with GravitySnapHelper: 27 | 28 | ```java 29 | startRecyclerView.setLayoutManager(new LinearLayoutManager(this, 30 | LinearLayoutManager.HORIZONTAL, false)); 31 | 32 | SnapHelper snapHelperStart = new GravitySnapHelper(Gravity.START); 33 | snapHelperStart.attachToRecyclerView(startRecyclerView); 34 | ``` 35 | 36 | ### Snapping top with GravitySnapHelper: 37 | 38 | ```java 39 | topRecyclerView.setLayoutManager(new LinearLayoutManager(this)); 40 | 41 | SnapHelper snapHelperTop = new GravitySnapHelper(Gravity.TOP); 42 | snapHelperTop.attachToRecyclerView(topRecyclerView); 43 | ``` 44 | 45 | ## License 46 | 47 | Copyright 2016 The Android Open Source Project 48 | Copyright 2016 Rúben Sousa 49 | 50 | Licensed under the Apache License, Version 2.0 (the "License"); 51 | you may not use this file except in compliance with the License. 52 | You may obtain a copy of the License at 53 | 54 | http://www.apache.org/licenses/LICENSE-2.0 55 | 56 | Unless required by applicable law or agreed to in writing, software 57 | distributed under the License is distributed on an "AS IS" BASIS, 58 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 59 | See the License for the specific language governing permissions and 60 | limitations under the License. 61 | -------------------------------------------------------------------------------- /app/src/main/java/com/github/rubensousa/recyclerviewsnap/Adapter.java: -------------------------------------------------------------------------------- 1 | package com.github.rubensousa.recyclerviewsnap; 2 | 3 | import android.support.v7.widget.RecyclerView; 4 | import android.view.LayoutInflater; 5 | import android.view.View; 6 | import android.view.ViewGroup; 7 | import android.widget.ImageView; 8 | import android.widget.TextView; 9 | 10 | import java.util.List; 11 | 12 | public class Adapter extends RecyclerView.Adapter { 13 | 14 | private List mApps; 15 | private boolean mHorizontal; 16 | 17 | public Adapter(boolean horizontal, List apps) { 18 | mHorizontal = horizontal; 19 | mApps = apps; 20 | } 21 | 22 | @Override 23 | public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 24 | return mHorizontal ? new ViewHolder(LayoutInflater.from(parent.getContext()) 25 | .inflate(R.layout.adapter, parent, false)) : 26 | new ViewHolder(LayoutInflater.from(parent.getContext()) 27 | .inflate(R.layout.adapter_vertical, parent, false)); 28 | } 29 | 30 | @Override 31 | public void onBindViewHolder(ViewHolder holder, int position) { 32 | App app = mApps.get(position); 33 | holder.imageView.setImageResource(app.getDrawable()); 34 | holder.nameTextView.setText(app.getName()); 35 | holder.ratingTextView.setText(String.valueOf(app.getRating())); 36 | 37 | } 38 | 39 | @Override 40 | public int getItemCount() { 41 | return mApps.size(); 42 | } 43 | 44 | public static class ViewHolder extends RecyclerView.ViewHolder { 45 | 46 | public ImageView imageView; 47 | public TextView nameTextView; 48 | public TextView ratingTextView; 49 | 50 | public ViewHolder(View itemView) { 51 | super(itemView); 52 | imageView = (ImageView) itemView.findViewById(R.id.imageView); 53 | nameTextView = (TextView) itemView.findViewById(R.id.nameTextView); 54 | ratingTextView = (TextView) itemView.findViewById(R.id.ratingTextView); 55 | } 56 | 57 | } 58 | 59 | } 60 | 61 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 12 | set DEFAULT_JVM_OPTS= 13 | 14 | set DIRNAME=%~dp0 15 | if "%DIRNAME%" == "" set DIRNAME=. 16 | set APP_BASE_NAME=%~n0 17 | set APP_HOME=%DIRNAME% 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windowz variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | if "%@eval[2+2]" == "4" goto 4NT_args 53 | 54 | :win9xME_args 55 | @rem Slurp the command line arguments. 56 | set CMD_LINE_ARGS= 57 | set _SKIP=2 58 | 59 | :win9xME_args_slurp 60 | if "x%~1" == "x" goto execute 61 | 62 | set CMD_LINE_ARGS=%* 63 | goto execute 64 | 65 | :4NT_args 66 | @rem Get arguments from the 4NT Shell from JP Software 67 | set CMD_LINE_ARGS=%$ 68 | 69 | :execute 70 | @rem Setup the command line 71 | 72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 73 | 74 | @rem Execute Gradle 75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 76 | 77 | :end 78 | @rem End local scope for the variables with windows NT shell 79 | if "%ERRORLEVEL%"=="0" goto mainEnd 80 | 81 | :fail 82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 83 | rem the _cmd.exe /c_ return code! 84 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 85 | exit /b 1 86 | 87 | :mainEnd 88 | if "%OS%"=="Windows_NT" endlocal 89 | 90 | :omega 91 | -------------------------------------------------------------------------------- /app/src/main/res/layout/adapter_vertical.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 8 | 12 | 13 | 21 | 22 | 32 | 33 | 40 | 41 | 48 | 49 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | -------------------------------------------------------------------------------- /app/src/main/java/com/github/rubensousa/recyclerviewsnap/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.github.rubensousa.recyclerviewsnap; 2 | 3 | import android.support.v7.app.AppCompatActivity; 4 | import android.os.Bundle; 5 | import android.support.v7.widget.LinearLayoutManager; 6 | import android.support.v7.widget.RecyclerView; 7 | import android.support.v7.widget.Toolbar; 8 | import android.view.Gravity; 9 | import android.view.MenuItem; 10 | 11 | import java.util.ArrayList; 12 | import java.util.List; 13 | 14 | public class MainActivity extends AppCompatActivity implements Toolbar.OnMenuItemClickListener { 15 | 16 | public static final String ORIENTATION = "orientation"; 17 | 18 | private RecyclerView mRecyclerView; 19 | private boolean mHorizontal; 20 | 21 | @Override 22 | protected void onCreate(Bundle savedInstanceState) { 23 | super.onCreate(savedInstanceState); 24 | setContentView(R.layout.activity_main); 25 | 26 | mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView); 27 | Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 28 | toolbar.inflateMenu(R.menu.main); 29 | toolbar.setOnMenuItemClickListener(this); 30 | mRecyclerView.setLayoutManager(new LinearLayoutManager(this)); 31 | mRecyclerView.setHasFixedSize(true); 32 | 33 | if (savedInstanceState == null) { 34 | mHorizontal = true; 35 | } else { 36 | mHorizontal = savedInstanceState.getBoolean(ORIENTATION); 37 | } 38 | 39 | setupAdapter(); 40 | } 41 | 42 | @Override 43 | protected void onSaveInstanceState(Bundle outState) { 44 | super.onSaveInstanceState(outState); 45 | outState.putBoolean(ORIENTATION, mHorizontal); 46 | } 47 | 48 | private void setupAdapter() { 49 | List apps = getApps(); 50 | 51 | SnapAdapter snapAdapter = new SnapAdapter(); 52 | if (mHorizontal) { 53 | snapAdapter.addSnap(new Snap(Gravity.CENTER_HORIZONTAL, "Snap center", apps)); 54 | snapAdapter.addSnap(new Snap(Gravity.START, "Snap start", apps)); 55 | snapAdapter.addSnap(new Snap(Gravity.END, "Snap end", apps)); 56 | } else { 57 | snapAdapter.addSnap(new Snap(Gravity.CENTER_VERTICAL, "Snap center", apps)); 58 | snapAdapter.addSnap(new Snap(Gravity.TOP, "Snap top", apps)); 59 | snapAdapter.addSnap(new Snap(Gravity.BOTTOM, "Snap bottom", apps)); 60 | } 61 | 62 | mRecyclerView.setAdapter(snapAdapter); 63 | } 64 | 65 | private List getApps() { 66 | List apps = new ArrayList<>(); 67 | apps.add(new App("Google+", R.drawable.ic_google_48dp, 4.6f)); 68 | apps.add(new App("Gmail", R.drawable.ic_gmail_48dp, 4.8f)); 69 | apps.add(new App("Inbox", R.drawable.ic_inbox_48dp, 4.5f)); 70 | apps.add(new App("Google Keep", R.drawable.ic_keep_48dp, 4.2f)); 71 | apps.add(new App("Google Drive", R.drawable.ic_drive_48dp, 4.6f)); 72 | apps.add(new App("Hangouts", R.drawable.ic_hangouts_48dp, 3.9f)); 73 | apps.add(new App("Google Photos", R.drawable.ic_photos_48dp, 4.6f)); 74 | apps.add(new App("Messenger", R.drawable.ic_messenger_48dp, 4.2f)); 75 | apps.add(new App("Sheets", R.drawable.ic_sheets_48dp, 4.2f)); 76 | apps.add(new App("Slides", R.drawable.ic_slides_48dp, 4.2f)); 77 | apps.add(new App("Docs", R.drawable.ic_docs_48dp, 4.2f)); 78 | return apps; 79 | } 80 | 81 | @Override 82 | public boolean onMenuItemClick(MenuItem item) { 83 | if (item.getItemId() == R.id.layoutType) { 84 | mHorizontal = !mHorizontal; 85 | setupAdapter(); 86 | item.setTitle(mHorizontal ? "Vertical" : "Horizontal"); 87 | } 88 | return false; 89 | } 90 | } 91 | -------------------------------------------------------------------------------- /app/src/main/java/com/github/rubensousa/recyclerviewsnap/SnapAdapter.java: -------------------------------------------------------------------------------- 1 | package com.github.rubensousa.recyclerviewsnap; 2 | 3 | 4 | import android.support.v7.widget.LinearLayoutManager; 5 | import android.support.v7.widget.LinearSnapHelper; 6 | import android.support.v7.widget.RecyclerView; 7 | import android.util.Log; 8 | import android.view.Gravity; 9 | import android.view.LayoutInflater; 10 | import android.view.MotionEvent; 11 | import android.view.View; 12 | import android.view.ViewGroup; 13 | import android.widget.TextView; 14 | 15 | import com.github.rubensousa.gravitysnaphelper.GravitySnapHelper; 16 | 17 | import java.util.ArrayList; 18 | 19 | public class SnapAdapter extends RecyclerView.Adapter implements GravitySnapHelper.SnapListener { 20 | 21 | public static final int VERTICAL = 0; 22 | public static final int HORIZONTAL = 1; 23 | 24 | private ArrayList mSnaps; 25 | // Disable touch detection for parent recyclerView if we use vertical nested recyclerViews 26 | private View.OnTouchListener mTouchListener = new View.OnTouchListener() { 27 | @Override 28 | public boolean onTouch(View v, MotionEvent event) { 29 | v.getParent().requestDisallowInterceptTouchEvent(true); 30 | return false; 31 | } 32 | }; 33 | 34 | public SnapAdapter() { 35 | mSnaps = new ArrayList<>(); 36 | } 37 | 38 | public void addSnap(Snap snap) { 39 | mSnaps.add(snap); 40 | } 41 | 42 | @Override 43 | public int getItemViewType(int position) { 44 | Snap snap = mSnaps.get(position); 45 | switch (snap.getGravity()) { 46 | case Gravity.CENTER_VERTICAL: 47 | return VERTICAL; 48 | case Gravity.CENTER_HORIZONTAL: 49 | return HORIZONTAL; 50 | case Gravity.START: 51 | return HORIZONTAL; 52 | case Gravity.TOP: 53 | return VERTICAL; 54 | case Gravity.END: 55 | return HORIZONTAL; 56 | case Gravity.BOTTOM: 57 | return VERTICAL; 58 | } 59 | return HORIZONTAL; 60 | } 61 | 62 | @Override 63 | public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 64 | View view = viewType == VERTICAL ? LayoutInflater.from(parent.getContext()) 65 | .inflate(R.layout.adapter_snap_vertical, parent, false) 66 | : LayoutInflater.from(parent.getContext()) 67 | .inflate(R.layout.adapter_snap, parent, false); 68 | 69 | if (viewType == VERTICAL) { 70 | view.findViewById(R.id.recyclerView).setOnTouchListener(mTouchListener); 71 | } 72 | 73 | return new ViewHolder(view); 74 | 75 | } 76 | 77 | @Override 78 | public void onBindViewHolder(ViewHolder holder, int position) { 79 | Snap snap = mSnaps.get(position); 80 | holder.snapTextView.setText(snap.getText()); 81 | 82 | if (snap.getGravity() == Gravity.START || snap.getGravity() == Gravity.END) { 83 | holder.recyclerView.setLayoutManager(new LinearLayoutManager(holder 84 | .recyclerView.getContext(), LinearLayoutManager.HORIZONTAL, false)); 85 | holder.recyclerView.setOnFlingListener(null); 86 | new GravitySnapHelper(snap.getGravity(), false, this).attachToRecyclerView(holder.recyclerView); 87 | } else if (snap.getGravity() == Gravity.CENTER_HORIZONTAL 88 | || snap.getGravity() == Gravity.CENTER_VERTICAL 89 | || snap.getGravity() == Gravity.CENTER) { 90 | holder.recyclerView.setLayoutManager(new LinearLayoutManager(holder 91 | .recyclerView.getContext(), snap.getGravity() == Gravity.CENTER_HORIZONTAL ? 92 | LinearLayoutManager.HORIZONTAL : LinearLayoutManager.VERTICAL, false)); 93 | holder.recyclerView.setOnFlingListener(null); 94 | new LinearSnapHelper().attachToRecyclerView(holder.recyclerView); 95 | } else { // Top / Bottom 96 | holder.recyclerView.setLayoutManager(new LinearLayoutManager(holder 97 | .recyclerView.getContext())); 98 | holder.recyclerView.setOnFlingListener(null); 99 | new GravitySnapHelper(snap.getGravity()).attachToRecyclerView(holder.recyclerView); 100 | } 101 | 102 | holder.recyclerView.setAdapter(new Adapter(snap.getGravity() == Gravity.START 103 | || snap.getGravity() == Gravity.END 104 | || snap.getGravity() == Gravity.CENTER_HORIZONTAL, snap.getApps())); 105 | } 106 | 107 | @Override 108 | public int getItemCount() { 109 | return mSnaps.size(); 110 | } 111 | 112 | @Override 113 | public void onSnap(int position) { 114 | Log.d("Snapped: ", position + ""); 115 | } 116 | 117 | public static class ViewHolder extends RecyclerView.ViewHolder { 118 | 119 | public TextView snapTextView; 120 | public RecyclerView recyclerView; 121 | 122 | public ViewHolder(View itemView) { 123 | super(itemView); 124 | snapTextView = (TextView) itemView.findViewById(R.id.snapTextView); 125 | recyclerView = (RecyclerView) itemView.findViewById(R.id.recyclerView); 126 | } 127 | 128 | } 129 | } 130 | 131 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 10 | DEFAULT_JVM_OPTS="" 11 | 12 | APP_NAME="Gradle" 13 | APP_BASE_NAME=`basename "$0"` 14 | 15 | # Use the maximum available, or set MAX_FD != -1 to use that value. 16 | MAX_FD="maximum" 17 | 18 | warn ( ) { 19 | echo "$*" 20 | } 21 | 22 | die ( ) { 23 | echo 24 | echo "$*" 25 | echo 26 | exit 1 27 | } 28 | 29 | # OS specific support (must be 'true' or 'false'). 30 | cygwin=false 31 | msys=false 32 | darwin=false 33 | case "`uname`" in 34 | CYGWIN* ) 35 | cygwin=true 36 | ;; 37 | Darwin* ) 38 | darwin=true 39 | ;; 40 | MINGW* ) 41 | msys=true 42 | ;; 43 | esac 44 | 45 | # Attempt to set APP_HOME 46 | # Resolve links: $0 may be a link 47 | PRG="$0" 48 | # Need this for relative symlinks. 49 | while [ -h "$PRG" ] ; do 50 | ls=`ls -ld "$PRG"` 51 | link=`expr "$ls" : '.*-> \(.*\)$'` 52 | if expr "$link" : '/.*' > /dev/null; then 53 | PRG="$link" 54 | else 55 | PRG=`dirname "$PRG"`"/$link" 56 | fi 57 | done 58 | SAVED="`pwd`" 59 | cd "`dirname \"$PRG\"`/" >/dev/null 60 | APP_HOME="`pwd -P`" 61 | cd "$SAVED" >/dev/null 62 | 63 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 64 | 65 | # Determine the Java command to use to start the JVM. 66 | if [ -n "$JAVA_HOME" ] ; then 67 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 68 | # IBM's JDK on AIX uses strange locations for the executables 69 | JAVACMD="$JAVA_HOME/jre/sh/java" 70 | else 71 | JAVACMD="$JAVA_HOME/bin/java" 72 | fi 73 | if [ ! -x "$JAVACMD" ] ; then 74 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 75 | 76 | Please set the JAVA_HOME variable in your environment to match the 77 | location of your Java installation." 78 | fi 79 | else 80 | JAVACMD="java" 81 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 82 | 83 | Please set the JAVA_HOME variable in your environment to match the 84 | location of your Java installation." 85 | fi 86 | 87 | # Increase the maximum file descriptors if we can. 88 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then 89 | MAX_FD_LIMIT=`ulimit -H -n` 90 | if [ $? -eq 0 ] ; then 91 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 92 | MAX_FD="$MAX_FD_LIMIT" 93 | fi 94 | ulimit -n $MAX_FD 95 | if [ $? -ne 0 ] ; then 96 | warn "Could not set maximum file descriptor limit: $MAX_FD" 97 | fi 98 | else 99 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 100 | fi 101 | fi 102 | 103 | # For Darwin, add options to specify how the application appears in the dock 104 | if $darwin; then 105 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 106 | fi 107 | 108 | # For Cygwin, switch paths to Windows format before running java 109 | if $cygwin ; then 110 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 111 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 112 | JAVACMD=`cygpath --unix "$JAVACMD"` 113 | 114 | # We build the pattern for arguments to be converted via cygpath 115 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 116 | SEP="" 117 | for dir in $ROOTDIRSRAW ; do 118 | ROOTDIRS="$ROOTDIRS$SEP$dir" 119 | SEP="|" 120 | done 121 | OURCYGPATTERN="(^($ROOTDIRS))" 122 | # Add a user-defined pattern to the cygpath arguments 123 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 124 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 125 | fi 126 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 127 | i=0 128 | for arg in "$@" ; do 129 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 130 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 131 | 132 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 133 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 134 | else 135 | eval `echo args$i`="\"$arg\"" 136 | fi 137 | i=$((i+1)) 138 | done 139 | case $i in 140 | (0) set -- ;; 141 | (1) set -- "$args0" ;; 142 | (2) set -- "$args0" "$args1" ;; 143 | (3) set -- "$args0" "$args1" "$args2" ;; 144 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 145 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 146 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 147 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 148 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 149 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 150 | esac 151 | fi 152 | 153 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules 154 | function splitJvmOpts() { 155 | JVM_OPTS=("$@") 156 | } 157 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS 158 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME" 159 | 160 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@" 161 | -------------------------------------------------------------------------------- /gradle/gradle-mvn-push.gradle: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright 2013 Chris Banes 3 | * 4 | * Licensed under the Apache License, Version 2.0 (the "License"); 5 | * you may not use this file except in compliance with the License. 6 | * You may obtain a copy of the License at 7 | * 8 | * http://www.apache.org/licenses/LICENSE-2.0 9 | * 10 | * Unless required by applicable law or agreed to in writing, software 11 | * distributed under the License is distributed on an "AS IS" BASIS, 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | * See the License for the specific language governing permissions and 14 | * limitations under the License. 15 | */ 16 | 17 | apply plugin: 'maven' 18 | apply plugin: 'signing' 19 | 20 | version = VERSION_NAME 21 | group = GROUP 22 | 23 | def isReleaseBuild() { 24 | return VERSION_NAME.contains("SNAPSHOT") == false 25 | } 26 | 27 | def getReleaseRepositoryUrl() { 28 | return hasProperty('RELEASE_REPOSITORY_URL') ? RELEASE_REPOSITORY_URL 29 | : "https://oss.sonatype.org/service/local/staging/deploy/maven2/" 30 | } 31 | 32 | def getSnapshotRepositoryUrl() { 33 | return hasProperty('SNAPSHOT_REPOSITORY_URL') ? SNAPSHOT_REPOSITORY_URL 34 | : "https://oss.sonatype.org/content/repositories/snapshots/" 35 | } 36 | 37 | def getRepositoryUsername() { 38 | return hasProperty('SONATYPE_NEXUS_USERNAME') ? SONATYPE_NEXUS_USERNAME : "" 39 | } 40 | 41 | def getRepositoryPassword() { 42 | return hasProperty('SONATYPE_NEXUS_PASSWORD') ? SONATYPE_NEXUS_PASSWORD : "" 43 | } 44 | 45 | afterEvaluate { project -> 46 | uploadArchives { 47 | repositories { 48 | mavenDeployer { 49 | beforeDeployment { MavenDeployment deployment -> signing.signPom(deployment) } 50 | 51 | pom.groupId = GROUP 52 | pom.artifactId = POM_ARTIFACT_ID 53 | pom.version = VERSION_NAME 54 | 55 | repository(url: getReleaseRepositoryUrl()) { 56 | authentication(userName: getRepositoryUsername(), password: getRepositoryPassword()) 57 | } 58 | snapshotRepository(url: getSnapshotRepositoryUrl()) { 59 | authentication(userName: getRepositoryUsername(), password: getRepositoryPassword()) 60 | } 61 | 62 | pom.project { 63 | name POM_NAME 64 | packaging POM_PACKAGING 65 | description POM_DESCRIPTION 66 | url POM_URL 67 | 68 | scm { 69 | url POM_SCM_URL 70 | connection POM_SCM_CONNECTION 71 | developerConnection POM_SCM_DEV_CONNECTION 72 | } 73 | 74 | licenses { 75 | license { 76 | name POM_LICENCE_NAME 77 | url POM_LICENCE_URL 78 | distribution POM_LICENCE_DIST 79 | } 80 | } 81 | 82 | developers { 83 | developer { 84 | id POM_DEVELOPER_ID 85 | name POM_DEVELOPER_NAME 86 | } 87 | } 88 | } 89 | } 90 | } 91 | } 92 | 93 | signing { 94 | required { isReleaseBuild() && gradle.taskGraph.hasTask("uploadArchives") } 95 | sign configurations.archives 96 | } 97 | 98 | if (project.getPlugins().hasPlugin('com.android.application') || 99 | project.getPlugins().hasPlugin('com.android.library')) { 100 | task install(type: Upload, dependsOn: assemble) { 101 | repositories.mavenInstaller { 102 | configuration = configurations.archives 103 | 104 | pom.groupId = GROUP 105 | pom.artifactId = POM_ARTIFACT_ID 106 | pom.version = VERSION_NAME 107 | 108 | pom.project { 109 | name POM_NAME 110 | packaging POM_PACKAGING 111 | description POM_DESCRIPTION 112 | url POM_URL 113 | 114 | scm { 115 | url POM_SCM_URL 116 | connection POM_SCM_CONNECTION 117 | developerConnection POM_SCM_DEV_CONNECTION 118 | } 119 | 120 | licenses { 121 | license { 122 | name POM_LICENCE_NAME 123 | url POM_LICENCE_URL 124 | distribution POM_LICENCE_DIST 125 | } 126 | } 127 | 128 | developers { 129 | developer { 130 | id POM_DEVELOPER_ID 131 | name POM_DEVELOPER_NAME 132 | } 133 | } 134 | } 135 | } 136 | } 137 | 138 | task androidJavadocs(type: Javadoc) { 139 | source = android.sourceSets.main.java.source 140 | classpath += project.files(android.getBootClasspath().join(File.pathSeparator)) 141 | } 142 | 143 | task androidJavadocsJar(type: Jar, dependsOn: androidJavadocs) { 144 | classifier = 'javadoc' 145 | from androidJavadocs.destinationDir 146 | } 147 | 148 | task androidSourcesJar(type: Jar) { 149 | classifier = 'sources' 150 | from android.sourceSets.main.java.source 151 | } 152 | } else { 153 | install { 154 | repositories.mavenInstaller { 155 | pom.groupId = GROUP 156 | pom.artifactId = POM_ARTIFACT_ID 157 | pom.version = VERSION_NAME 158 | 159 | pom.project { 160 | name POM_NAME 161 | packaging POM_PACKAGING 162 | description POM_DESCRIPTION 163 | url POM_URL 164 | 165 | scm { 166 | url POM_SCM_URL 167 | connection POM_SCM_CONNECTION 168 | developerConnection POM_SCM_DEV_CONNECTION 169 | } 170 | 171 | licenses { 172 | license { 173 | name POM_LICENCE_NAME 174 | url POM_LICENCE_URL 175 | distribution POM_LICENCE_DIST 176 | } 177 | } 178 | 179 | developers { 180 | developer { 181 | id POM_DEVELOPER_ID 182 | name POM_DEVELOPER_NAME 183 | } 184 | } 185 | } 186 | } 187 | } 188 | 189 | task sourcesJar(type: Jar, dependsOn:classes) { 190 | classifier = 'sources' 191 | from sourceSets.main.allSource 192 | } 193 | 194 | task javadocJar(type: Jar, dependsOn:javadoc) { 195 | classifier = 'javadoc' 196 | from javadoc.destinationDir 197 | } 198 | } 199 | 200 | if (JavaVersion.current().isJava8Compatible()) { 201 | allprojects { 202 | tasks.withType(Javadoc) { 203 | options.addStringOption('Xdoclint:none', '-quiet') 204 | } 205 | } 206 | } 207 | 208 | artifacts { 209 | if (project.getPlugins().hasPlugin('com.android.application') || 210 | project.getPlugins().hasPlugin('com.android.library')) { 211 | archives androidSourcesJar 212 | archives androidJavadocsJar 213 | } else { 214 | archives sourcesJar 215 | archives javadocJar 216 | } 217 | } 218 | } 219 | -------------------------------------------------------------------------------- /LICENSE.txt: -------------------------------------------------------------------------------- 1 | 2 | Apache License 3 | Version 2.0, January 2004 4 | http://www.apache.org/licenses/ 5 | 6 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 7 | 8 | 1. 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We also recommend that a 186 | file or class name and description of purpose be included on the 187 | same "printed page" as the copyright notice for easier 188 | identification within third-party archives. 189 | 190 | Copyright [yyyy] [name of copyright owner] 191 | 192 | Licensed under the Apache License, Version 2.0 (the "License"); 193 | you may not use this file except in compliance with the License. 194 | You may obtain a copy of the License at 195 | 196 | http://www.apache.org/licenses/LICENSE-2.0 197 | 198 | Unless required by applicable law or agreed to in writing, software 199 | distributed under the License is distributed on an "AS IS" BASIS, 200 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 201 | See the License for the specific language governing permissions and 202 | limitations under the License. 203 | -------------------------------------------------------------------------------- /gravitysnaphelper/src/main/java/com/github/rubensousa/gravitysnaphelper/GravitySnapHelper.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2016 The Android Open Source Project 3 | * Copyright (C) 2016 Rúben Sousa 4 | * 5 | * Licensed under the Apache License, Version 2.0 (the "License"); 6 | * you may not use this file except in compliance with the License. 7 | * You may obtain a copy of the License at 8 | * 9 | * http://www.apache.org/licenses/LICENSE-2.0 10 | * 11 | * Unless required by applicable law or agreed to in writing, software 12 | * distributed under the License is distributed on an "AS IS" BASIS, 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 | * See the License for the specific languag`e governing permissions and 15 | * limitations under the License. 16 | */ 17 | 18 | package com.github.rubensousa.gravitysnaphelper; 19 | 20 | import android.support.annotation.NonNull; 21 | import android.support.annotation.Nullable; 22 | import android.support.v7.widget.LinearLayoutManager; 23 | import android.support.v7.widget.LinearSnapHelper; 24 | import android.support.v7.widget.OrientationHelper; 25 | import android.support.v7.widget.RecyclerView; 26 | import android.view.Gravity; 27 | import android.view.View; 28 | 29 | 30 | public class GravitySnapHelper extends LinearSnapHelper { 31 | 32 | private OrientationHelper mVerticalHelper; 33 | private OrientationHelper mHorizontalHelper; 34 | private int mGravity; 35 | private boolean mIsRtlHorizontal; 36 | private boolean mSnapLastItemEnabled; 37 | SnapListener mSnapListener; 38 | boolean mSnapping; 39 | private RecyclerView.OnScrollListener mScrollListener = new RecyclerView.OnScrollListener() { 40 | @Override 41 | public void onScrollStateChanged(RecyclerView recyclerView, int newState) { 42 | super.onScrollStateChanged(recyclerView, newState); 43 | if (newState == RecyclerView.SCROLL_STATE_SETTLING) { 44 | mSnapping = false; 45 | } 46 | if (newState == RecyclerView.SCROLL_STATE_IDLE && mSnapping && mSnapListener != null) { 47 | int position = getSnappedPosition(recyclerView); 48 | if (position != RecyclerView.NO_POSITION) { 49 | mSnapListener.onSnap(position); 50 | } 51 | mSnapping = false; 52 | } 53 | } 54 | }; 55 | 56 | public GravitySnapHelper(int gravity) { 57 | this(gravity, false, null); 58 | } 59 | 60 | public GravitySnapHelper(int gravity, boolean enableSnapLastItem) { 61 | this(gravity, enableSnapLastItem, null); 62 | } 63 | 64 | public GravitySnapHelper(int gravity, boolean enableSnapLastItem, SnapListener snapListener) { 65 | if (gravity != Gravity.START && gravity != Gravity.END 66 | && gravity != Gravity.BOTTOM && gravity != Gravity.TOP) { 67 | throw new IllegalArgumentException("Invalid gravity value. Use START " + 68 | "| END | BOTTOM | TOP constants"); 69 | } 70 | mSnapListener = snapListener; 71 | mGravity = gravity; 72 | mSnapLastItemEnabled = enableSnapLastItem; 73 | } 74 | 75 | @Override 76 | public void attachToRecyclerView(@Nullable RecyclerView recyclerView) 77 | throws IllegalStateException { 78 | if (recyclerView != null) { 79 | if (mGravity == Gravity.START || mGravity == Gravity.END) { 80 | mIsRtlHorizontal 81 | = recyclerView.getContext().getResources().getBoolean(R.bool.com_github_rubensousa_gravitysnaphelper_is_rtl); 82 | } 83 | if (mSnapListener != null) { 84 | recyclerView.addOnScrollListener(mScrollListener); 85 | } 86 | } 87 | super.attachToRecyclerView(recyclerView); 88 | } 89 | 90 | @Override 91 | public int[] calculateDistanceToFinalSnap(@NonNull RecyclerView.LayoutManager layoutManager, 92 | @NonNull View targetView) { 93 | int[] out = new int[2]; 94 | 95 | if (layoutManager.canScrollHorizontally()) { 96 | if (mGravity == Gravity.START) { 97 | out[0] = distanceToStart(targetView, getHorizontalHelper(layoutManager), false); 98 | } else { // END 99 | out[0] = distanceToEnd(targetView, getHorizontalHelper(layoutManager), false); 100 | } 101 | } else { 102 | out[0] = 0; 103 | } 104 | 105 | if (layoutManager.canScrollVertically()) { 106 | if (mGravity == Gravity.TOP) { 107 | out[1] = distanceToStart(targetView, getVerticalHelper(layoutManager), false); 108 | } else { // BOTTOM 109 | out[1] = distanceToEnd(targetView, getVerticalHelper(layoutManager), false); 110 | } 111 | } else { 112 | out[1] = 0; 113 | } 114 | 115 | return out; 116 | } 117 | 118 | @Override 119 | public View findSnapView(RecyclerView.LayoutManager layoutManager) { 120 | View snapView = null; 121 | if (layoutManager instanceof LinearLayoutManager) { 122 | switch (mGravity) { 123 | case Gravity.START: 124 | snapView = findStartView(layoutManager, getHorizontalHelper(layoutManager)); 125 | break; 126 | case Gravity.END: 127 | snapView = findEndView(layoutManager, getHorizontalHelper(layoutManager)); 128 | break; 129 | case Gravity.TOP: 130 | snapView = findStartView(layoutManager, getVerticalHelper(layoutManager)); 131 | break; 132 | case Gravity.BOTTOM: 133 | snapView = findEndView(layoutManager, getVerticalHelper(layoutManager)); 134 | break; 135 | } 136 | } 137 | 138 | mSnapping = snapView != null; 139 | 140 | return snapView; 141 | } 142 | 143 | /** 144 | * Enable snapping of the last item that's snappable. 145 | * The default value is false, because you can't see the last item completely 146 | * if this is enabled. 147 | * 148 | * @param snap true if you want to enable snapping of the last snappable item 149 | */ 150 | public void enableLastItemSnap(boolean snap) { 151 | mSnapLastItemEnabled = snap; 152 | } 153 | 154 | private int distanceToStart(View targetView, OrientationHelper helper, boolean fromEnd) { 155 | if (mIsRtlHorizontal && !fromEnd) { 156 | return distanceToEnd(targetView, helper, true); 157 | } 158 | 159 | return helper.getDecoratedStart(targetView) - helper.getStartAfterPadding(); 160 | } 161 | 162 | private int distanceToEnd(View targetView, OrientationHelper helper, boolean fromStart) { 163 | if (mIsRtlHorizontal && !fromStart) { 164 | return distanceToStart(targetView, helper, true); 165 | } 166 | 167 | return helper.getDecoratedEnd(targetView) - helper.getEndAfterPadding(); 168 | } 169 | 170 | /** 171 | * Returns the first view that we should snap to. 172 | * 173 | * @param layoutManager the recyclerview's layout manager 174 | * @param helper orientation helper to calculate view sizes 175 | * @return the first view in the LayoutManager to snap to 176 | */ 177 | private View findStartView(RecyclerView.LayoutManager layoutManager, 178 | OrientationHelper helper) { 179 | 180 | if (layoutManager instanceof LinearLayoutManager) { 181 | int firstChild = ((LinearLayoutManager) layoutManager).findFirstVisibleItemPosition(); 182 | 183 | if (firstChild == RecyclerView.NO_POSITION) { 184 | return null; 185 | } 186 | 187 | View child = layoutManager.findViewByPosition(firstChild); 188 | 189 | float visibleWidth; 190 | 191 | // We should return the child if it's visible width 192 | // is greater than 0.5 of it's total width. 193 | // In a RTL configuration, we need to check the start point and in LTR the end point 194 | if (mIsRtlHorizontal) { 195 | visibleWidth = (float) (helper.getTotalSpace() - helper.getDecoratedStart(child)) 196 | / helper.getDecoratedMeasurement(child); 197 | } else { 198 | visibleWidth = (float) helper.getDecoratedEnd(child) 199 | / helper.getDecoratedMeasurement(child); 200 | } 201 | 202 | // If we're at the end of the list, we shouldn't snap 203 | // to avoid having the last item not completely visible. 204 | boolean endOfList = ((LinearLayoutManager) layoutManager) 205 | .findLastCompletelyVisibleItemPosition() 206 | == layoutManager.getItemCount() - 1; 207 | 208 | if (visibleWidth > 0.5f && !endOfList) { 209 | return child; 210 | } else if (mSnapLastItemEnabled && endOfList) { 211 | return child; 212 | } else if (endOfList) { 213 | return null; 214 | } else { 215 | // If the child wasn't returned, we need to return 216 | // the next view close to the start. 217 | return layoutManager.findViewByPosition(firstChild + 1); 218 | } 219 | } 220 | 221 | return null; 222 | } 223 | 224 | private View findEndView(RecyclerView.LayoutManager layoutManager, 225 | OrientationHelper helper) { 226 | 227 | if (layoutManager instanceof LinearLayoutManager) { 228 | int lastChild = ((LinearLayoutManager) layoutManager).findLastVisibleItemPosition(); 229 | 230 | if (lastChild == RecyclerView.NO_POSITION) { 231 | return null; 232 | } 233 | 234 | View child = layoutManager.findViewByPosition(lastChild); 235 | 236 | float visibleWidth; 237 | 238 | if (mIsRtlHorizontal) { 239 | visibleWidth = (float) helper.getDecoratedEnd(child) 240 | / helper.getDecoratedMeasurement(child); 241 | } else { 242 | visibleWidth = (float) (helper.getTotalSpace() - helper.getDecoratedStart(child)) 243 | / helper.getDecoratedMeasurement(child); 244 | } 245 | 246 | // If we're at the start of the list, we shouldn't snap 247 | // to avoid having the first item not completely visible. 248 | boolean startOfList = ((LinearLayoutManager) layoutManager) 249 | .findFirstCompletelyVisibleItemPosition() == 0; 250 | 251 | if (visibleWidth > 0.5f && !startOfList) { 252 | return child; 253 | } else if (mSnapLastItemEnabled && startOfList) { 254 | return child; 255 | } else if (startOfList) { 256 | return null; 257 | } else { 258 | // If the child wasn't returned, we need to return the previous view 259 | return layoutManager.findViewByPosition(lastChild - 1); 260 | } 261 | } 262 | return null; 263 | } 264 | 265 | int getSnappedPosition(RecyclerView recyclerView) { 266 | RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager(); 267 | 268 | if (layoutManager instanceof LinearLayoutManager) { 269 | if (mGravity == Gravity.START || mGravity == Gravity.TOP) { 270 | return ((LinearLayoutManager) layoutManager).findFirstCompletelyVisibleItemPosition(); 271 | } else if (mGravity == Gravity.END || mGravity == Gravity.BOTTOM) { 272 | return ((LinearLayoutManager) layoutManager).findLastCompletelyVisibleItemPosition(); 273 | } 274 | } 275 | 276 | return RecyclerView.NO_POSITION; 277 | 278 | } 279 | 280 | private OrientationHelper getVerticalHelper(RecyclerView.LayoutManager layoutManager) { 281 | if (mVerticalHelper == null) { 282 | mVerticalHelper = OrientationHelper.createVerticalHelper(layoutManager); 283 | } 284 | return mVerticalHelper; 285 | } 286 | 287 | private OrientationHelper getHorizontalHelper(RecyclerView.LayoutManager layoutManager) { 288 | if (mHorizontalHelper == null) { 289 | mHorizontalHelper = OrientationHelper.createHorizontalHelper(layoutManager); 290 | } 291 | return mHorizontalHelper; 292 | } 293 | 294 | public interface SnapListener { 295 | void onSnap(int position); 296 | } 297 | 298 | } 299 | --------------------------------------------------------------------------------