├── .idea
├── .name
├── copyright
│ └── profiles_settings.xml
├── encodings.xml
├── vcs.xml
├── modules.xml
├── runConfigurations.xml
├── gradle.xml
├── compiler.xml
└── misc.xml
├── app
├── .gitignore
├── src
│ ├── main
│ │ ├── res
│ │ │ ├── mipmap-hdpi
│ │ │ │ └── ic_launcher.png
│ │ │ ├── mipmap-mdpi
│ │ │ │ └── ic_launcher.png
│ │ │ ├── mipmap-xhdpi
│ │ │ │ └── ic_launcher.png
│ │ │ ├── mipmap-xxhdpi
│ │ │ │ └── ic_launcher.png
│ │ │ ├── mipmap-xxxhdpi
│ │ │ │ └── ic_launcher.png
│ │ │ ├── values
│ │ │ │ ├── dimens.xml
│ │ │ │ ├── colors.xml
│ │ │ │ ├── strings.xml
│ │ │ │ └── styles.xml
│ │ │ ├── values-w820dp
│ │ │ │ └── dimens.xml
│ │ │ └── layout
│ │ │ │ ├── activity_home.xml
│ │ │ │ ├── item_home.xml
│ │ │ │ └── activity_detail.xml
│ │ ├── AndroidManifest.xml
│ │ └── java
│ │ │ └── com
│ │ │ └── fashare
│ │ │ └── shareelementdemo
│ │ │ ├── home
│ │ │ ├── HomeActivity.java
│ │ │ └── HomeAdapter.java
│ │ │ ├── detail
│ │ │ ├── DetailActivity.java
│ │ │ └── DetailAdapter.java
│ │ │ ├── behavior
│ │ │ ├── FollowBehavior.java
│ │ │ └── DragDismissBehavior.java
│ │ │ └── widget
│ │ │ └── SpaceItemDecoration.java
│ ├── test
│ │ └── java
│ │ │ └── com
│ │ │ └── fashare
│ │ │ └── shareelementdemo
│ │ │ └── ExampleUnitTest.java
│ └── androidTest
│ │ └── java
│ │ └── com
│ │ └── fashare
│ │ └── shareelementdemo
│ │ └── ExampleInstrumentedTest.java
├── proguard-rules.pro
└── build.gradle
├── settings.gradle
├── gradle
└── wrapper
│ ├── gradle-wrapper.jar
│ └── gradle-wrapper.properties
├── .gitignore
├── gradle.properties
├── gradlew.bat
├── README.md
└── gradlew
/.idea/.name:
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1 | ShareElementDemo
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/app/.gitignore:
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1 | /build
2 |
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/settings.gradle:
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1 | include ':app'
2 |
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/.idea/copyright/profiles_settings.xml:
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1 |
2 |
3 |
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/gradle/wrapper/gradle-wrapper.jar:
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https://raw.githubusercontent.com/fashare2015/ShareElementDemo/HEAD/gradle/wrapper/gradle-wrapper.jar
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/app/src/main/res/mipmap-hdpi/ic_launcher.png:
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https://raw.githubusercontent.com/fashare2015/ShareElementDemo/HEAD/app/src/main/res/mipmap-hdpi/ic_launcher.png
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/app/src/main/res/mipmap-mdpi/ic_launcher.png:
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https://raw.githubusercontent.com/fashare2015/ShareElementDemo/HEAD/app/src/main/res/mipmap-mdpi/ic_launcher.png
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/app/src/main/res/mipmap-xhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/fashare2015/ShareElementDemo/HEAD/app/src/main/res/mipmap-xhdpi/ic_launcher.png
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/app/src/main/res/mipmap-xxhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/fashare2015/ShareElementDemo/HEAD/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
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/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png:
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https://raw.githubusercontent.com/fashare2015/ShareElementDemo/HEAD/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
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/.gitignore:
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1 | *.iml
2 | .gradle
3 | /local.properties
4 | /.idea/workspace.xml
5 | /.idea/libraries
6 | .DS_Store
7 | /build
8 | /captures
9 | .externalNativeBuild
10 |
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/.idea/encodings.xml:
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6 |
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/.idea/vcs.xml:
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/app/src/main/res/values/dimens.xml:
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1 |
2 |
3 | 16dp
4 | 16dp
5 |
6 |
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/gradle/wrapper/gradle-wrapper.properties:
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1 | #Mon Dec 28 10:00:20 PST 2015
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 |
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/app/src/main/res/values/colors.xml:
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1 |
2 |
3 | #3F51B5
4 | #303F9F
5 | #FF4081
6 |
7 | #22ffffff
8 |
9 |
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/.idea/modules.xml:
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1 |
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4 |
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6 |
7 |
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9 |
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/app/src/main/res/values-w820dp/dimens.xml:
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1 |
2 |
5 | 64dp
6 |
7 |
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/app/src/test/java/com/fashare/shareelementdemo/ExampleUnitTest.java:
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1 | package com.fashare.shareelementdemo;
2 |
3 | import org.junit.Test;
4 |
5 | import static org.junit.Assert.*;
6 |
7 | /**
8 | * Example local unit test, which will execute on the development machine (host).
9 | *
10 | * @see Testing documentation
11 | */
12 | public class ExampleUnitTest {
13 | @Test
14 | public void addition_isCorrect() throws Exception {
15 | assertEquals(4, 2 + 2);
16 | }
17 | }
18 |
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/app/src/main/res/values/strings.xml:
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1 |
2 | ShareElementDemo
3 | iv_img_transitionName
4 | scrollview_detail_transitionName
5 | 内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n内容\n
6 |
7 |
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/.idea/runConfigurations.xml:
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1 |
2 |
3 |
4 |
11 |
12 |
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/app/src/main/res/layout/activity_home.xml:
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1 |
2 |
8 |
9 |
14 |
15 |
16 |
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/.idea/gradle.xml:
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1 |
2 |
3 |
4 |
17 |
18 |
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/app/proguard-rules.pro:
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1 | # Add project specific ProGuard rules here.
2 | # By default, the flags in this file are appended to flags specified
3 | # in /Users/jinliangshan/Library/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 |
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/.idea/compiler.xml:
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
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/gradle.properties:
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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 | org.gradle.jvmargs=-Xmx1536m
13 |
14 | # When configured, Gradle will run in incubating parallel mode.
15 | # This option should only be used with decoupled projects. More details, visit
16 | # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
17 | # org.gradle.parallel=true
18 |
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/app/src/main/AndroidManifest.xml:
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1 |
2 |
4 |
5 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
20 |
21 |
22 |
23 |
24 |
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/app/src/androidTest/java/com/fashare/shareelementdemo/ExampleInstrumentedTest.java:
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1 | package com.fashare.shareelementdemo;
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 | * Instrumentation 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.fashare.shareelementdemo", appContext.getPackageName());
25 | }
26 | }
27 |
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/app/src/main/res/layout/item_home.xml:
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1 |
2 |
9 |
10 |
15 |
16 |
26 |
27 |
28 |
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/app/src/main/res/values/styles.xml:
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1 |
2 |
3 |
4 |
10 |
11 |
12 |
26 |
27 |
28 |
29 |
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/app/build.gradle:
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1 | apply plugin: 'com.android.application'
2 | apply plugin: 'android-apt'
3 |
4 | android {
5 | compileSdkVersion 24
6 | buildToolsVersion "24.0.0"
7 | defaultConfig {
8 | applicationId "com.fashare.shareelementdemo"
9 | minSdkVersion 21
10 | targetSdkVersion 24
11 | versionCode 1
12 | versionName "1.0"
13 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
14 | }
15 | buildTypes {
16 | release {
17 | minifyEnabled false
18 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
19 | }
20 | }
21 | }
22 |
23 | ext.supportLibVersion = '24.2.0'
24 |
25 | dependencies {
26 | compile fileTree(dir: 'libs', include: ['*.jar'])
27 | androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
28 | exclude group: 'com.android.support', module: 'support-annotations'
29 | })
30 | compile "com.android.support:appcompat-v7:${supportLibVersion}"
31 | compile "com.android.support:recyclerview-v7:${supportLibVersion}"
32 | compile "com.android.support:design:${supportLibVersion}"
33 | compile 'com.jakewharton:butterknife:8.3.0'
34 | apt 'com.jakewharton:butterknife-compiler:8.3.0'
35 | testCompile 'junit:junit:4.12'
36 | }
37 |
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/app/src/main/java/com/fashare/shareelementdemo/home/HomeActivity.java:
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1 | package com.fashare.shareelementdemo.home;
2 |
3 | import android.os.Bundle;
4 | import android.support.v7.app.AppCompatActivity;
5 | import android.support.v7.widget.RecyclerView;
6 | import android.support.v7.widget.StaggeredGridLayoutManager;
7 |
8 | import com.fashare.shareelementdemo.R;
9 | import com.fashare.shareelementdemo.widget.SpaceItemDecoration;
10 |
11 | import java.util.Arrays;
12 |
13 | import butterknife.BindView;
14 | import butterknife.ButterKnife;
15 |
16 | public class HomeActivity extends AppCompatActivity {
17 |
18 | @BindView(R.id.rv)
19 | RecyclerView mRv;
20 | private HomeAdapter mAdapter;
21 |
22 | @Override
23 | protected void onCreate(Bundle savedInstanceState) {
24 | super.onCreate(savedInstanceState);
25 | setContentView(R.layout.activity_home);
26 | ButterKnife.bind(this);
27 |
28 | initView();
29 | }
30 |
31 | private void initView() {
32 | mRv.setAdapter(mAdapter = new HomeAdapter(this));
33 | mRv.setLayoutManager(new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL));
34 | mRv.addItemDecoration(new SpaceItemDecoration(30));
35 |
36 | mAdapter.setDataList(Arrays.asList("1", "2", "3", "1", "2", "3", "1", "2", "3", "1", "2", "3"));
37 | }
38 | }
39 |
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/app/src/main/java/com/fashare/shareelementdemo/detail/DetailActivity.java:
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1 | package com.fashare.shareelementdemo.detail;
2 |
3 | import android.os.Bundle;
4 | import android.support.v7.app.AppCompatActivity;
5 | import android.support.v7.widget.RecyclerView;
6 | import android.widget.ImageView;
7 |
8 | import com.fashare.shareelementdemo.R;
9 | import com.fashare.shareelementdemo.widget.SpaceItemDecoration;
10 |
11 | import java.util.Arrays;
12 |
13 | import butterknife.BindView;
14 | import butterknife.ButterKnife;
15 |
16 | public class DetailActivity extends AppCompatActivity {
17 |
18 | @BindView(R.id.iv_img)
19 | ImageView mIvImg;
20 | @BindView(R.id.rv_detail)
21 | RecyclerView mRvDetail;
22 | private DetailAdapter mAdapter;
23 |
24 | @Override
25 | protected void onCreate(Bundle savedInstanceState) {
26 | super.onCreate(savedInstanceState);
27 | setContentView(R.layout.activity_detail);
28 | ButterKnife.bind(this);
29 |
30 | initView();
31 | }
32 |
33 | private void initView() {
34 | mRvDetail.setAdapter(mAdapter = new DetailAdapter(this));
35 | mRvDetail.addItemDecoration(new SpaceItemDecoration(30));
36 |
37 | mAdapter.setDataList(Arrays.asList(
38 | "1", "2", "3", "4", "5",
39 | "6", "7", "8", "9", "10",
40 | "11", "12", "13", "14", "15",
41 | "16", "17", "18", "19", "20"
42 | ));
43 | }
44 | }
45 |
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/app/src/main/res/layout/activity_detail.xml:
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1 |
2 |
11 |
12 |
19 |
20 |
21 |
30 |
31 |
32 |
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/app/src/main/java/com/fashare/shareelementdemo/behavior/FollowBehavior.java:
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1 | package com.fashare.shareelementdemo.behavior;
2 |
3 | import android.content.Context;
4 | import android.support.design.widget.CoordinatorLayout;
5 | import android.support.v4.widget.NestedScrollView;
6 | import android.util.AttributeSet;
7 | import android.util.Log;
8 | import android.view.View;
9 |
10 | /**
11 | * User: fashare(153614131@qq.com)
12 | * Date: 2016-12-16
13 | * Time: 21:16
14 | *
15 | *
16 | * 一个 "紧贴联动" 的 Behavior
17 | */
18 | public class FollowBehavior extends CoordinatorLayout.Behavior {
19 | public static final String TAG = "FollowBehavior";
20 |
21 | private Context mContext;
22 | NestedScrollView mDependency;
23 |
24 | public FollowBehavior(Context context, AttributeSet attrs) {
25 | super(context, attrs);
26 | mContext = context;
27 | }
28 |
29 | @Override
30 | public boolean layoutDependsOn(CoordinatorLayout parent, View child, View dependency) {
31 |
32 | // boolean isValidDependency = dependency instanceof NestedScrollView;
33 | // if(isValidDependency)
34 | // mDependency = (NestedScrollView)dependency;
35 | return true;
36 | }
37 |
38 | @Override
39 | public boolean onDependentViewChanged(CoordinatorLayout parent, View child, View dependency) {
40 | int height = child.getHeight();
41 | child.setTop(dependency.getTop() - height);
42 | child.setBottom(dependency.getTop());
43 | Log.d(TAG, "onDependentViewChanged: " + dependency.getTop() + ", " + child.getTop() + ", " + height);
44 |
45 | return true;
46 | }
47 | }
48 |
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/app/src/main/java/com/fashare/shareelementdemo/detail/DetailAdapter.java:
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1 | package com.fashare.shareelementdemo.detail;
2 |
3 | import android.content.Context;
4 | import android.support.v7.widget.RecyclerView;
5 | import android.view.View;
6 | import android.view.ViewGroup;
7 | import android.widget.TextView;
8 | import android.widget.Toast;
9 |
10 | import java.util.ArrayList;
11 | import java.util.List;
12 |
13 | /**
14 | * Created by jinliangshan on 16/12/14.
15 | */
16 | class DetailAdapter extends RecyclerView.Adapter {
17 | Context mContext;
18 | List mDataList;
19 |
20 | public void setDataList(List dataList) {
21 | mDataList = dataList;
22 | notifyDataSetChanged();
23 | }
24 |
25 | public DetailAdapter(Context context) {
26 | mContext = context;
27 | mDataList = new ArrayList<>();
28 | }
29 |
30 | @Override
31 | public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
32 | return new ViewHolder(mContext);
33 | }
34 |
35 | @Override
36 | public void onBindViewHolder(ViewHolder holder, int position) {
37 | holder.bind(mDataList.get(position));
38 | }
39 |
40 | @Override
41 | public int getItemCount() {
42 | return mDataList != null ? mDataList.size() : 0;
43 | }
44 |
45 | public class ViewHolder extends RecyclerView.ViewHolder {
46 | public TextView mTextView;
47 |
48 | public ViewHolder(Context context) {
49 | super(View.inflate(context, android.R.layout.simple_list_item_1, null));
50 | mTextView = (TextView) itemView.findViewById(android.R.id.text1);
51 | mTextView.setLayoutParams(new ViewGroup.LayoutParams(
52 | ViewGroup.LayoutParams.MATCH_PARENT,
53 | ViewGroup.LayoutParams.WRAP_CONTENT
54 | ));
55 | itemView.requestLayout();
56 | }
57 |
58 | public void bind(final String data) {
59 | mTextView.setText(data);
60 | mTextView.setOnClickListener(new View.OnClickListener() {
61 | @Override
62 | public void onClick(View v) {
63 | Toast.makeText(mContext, data, Toast.LENGTH_SHORT).show();
64 | }
65 | });
66 | }
67 | }
68 | }
69 |
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/app/src/main/java/com/fashare/shareelementdemo/widget/SpaceItemDecoration.java:
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1 | package com.fashare.shareelementdemo.widget;
2 |
3 | import android.graphics.Canvas;
4 | import android.graphics.Rect;
5 | import android.support.v7.widget.GridLayoutManager;
6 | import android.support.v7.widget.RecyclerView;
7 | import android.support.v7.widget.StaggeredGridLayoutManager;
8 | import android.view.View;
9 |
10 | /**
11 | * Created by jinliangshan on 2016/7/26.
12 | * 设置 RecyclerView 的间距
13 | */
14 | public class SpaceItemDecoration extends RecyclerView.ItemDecoration {
15 | private int space;
16 |
17 | public SpaceItemDecoration(int space) {
18 | this.space = space;
19 | }
20 |
21 | @Override
22 | public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
23 | super.onDraw(c, parent, state);
24 | }
25 |
26 | @Override
27 | public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
28 | int itemPosition = parent.getChildAdapterPosition(view);
29 | int itemCount = parent.getAdapter().getItemCount();
30 | int colCount = getSpanCount(parent);
31 | int rowCount = (itemCount-1)/colCount + 1;
32 |
33 | int rightSpace = isLastCol(itemPosition, rowCount, colCount)? 0: space; // 最后一列
34 | int bottomSpace = isLastRaw(itemPosition, rowCount, colCount)? 0: space; // 最后一行
35 |
36 | outRect.set(0, 0, rightSpace, bottomSpace); // 设置右边和底部 margin 间距
37 | }
38 |
39 | private boolean isLastRaw(int itemPosition, int rowCount, int colCount){
40 | return (itemPosition / colCount) == rowCount-1;
41 | }
42 |
43 | private boolean isLastCol(int itemPosition, int rowCount, int colCount){
44 | return (itemPosition % colCount) == colCount-1;
45 | }
46 |
47 | private int getSpanCount(RecyclerView parent){
48 | RecyclerView.LayoutManager layoutManager = parent.getLayoutManager();
49 | int spanCount = 1; // 列数, LinearLayoutManger 默认为 1
50 | if(layoutManager instanceof GridLayoutManager)
51 | spanCount = ((GridLayoutManager) layoutManager).getSpanCount();
52 | else if(layoutManager instanceof StaggeredGridLayoutManager)
53 | spanCount = ((StaggeredGridLayoutManager) layoutManager).getSpanCount();
54 | return spanCount;
55 | }
56 | }
57 |
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/gradlew.bat:
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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 |
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/.idea/misc.xml:
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1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
19 |
29 |
30 |
31 |
32 |
33 |
34 |
35 |
36 |
37 |
38 |
39 |
40 |
41 |
42 |
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47 |
48 |
49 |
50 | 1.8
51 |
52 |
57 |
58 |
59 |
60 |
61 |
62 |
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/app/src/main/java/com/fashare/shareelementdemo/home/HomeAdapter.java:
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1 | package com.fashare.shareelementdemo.home;
2 |
3 | import android.app.Activity;
4 | import android.content.Context;
5 | import android.content.Intent;
6 | import android.support.v4.app.ActivityOptionsCompat;
7 | import android.support.v4.util.Pair;
8 | import android.support.v7.widget.RecyclerView;
9 | import android.view.View;
10 | import android.view.ViewGroup;
11 | import android.widget.ImageView;
12 | import android.widget.TextView;
13 |
14 | import com.fashare.shareelementdemo.R;
15 | import com.fashare.shareelementdemo.detail.DetailActivity;
16 |
17 | import java.util.ArrayList;
18 | import java.util.List;
19 |
20 | import butterknife.BindView;
21 | import butterknife.ButterKnife;
22 |
23 | /**
24 | * Created by jinliangshan on 16/12/14.
25 | */
26 | class HomeAdapter extends RecyclerView.Adapter {
27 | Context mContext;
28 | List mDataList;
29 |
30 | public void setDataList(List dataList) {
31 | mDataList = dataList;
32 | notifyDataSetChanged();
33 | }
34 |
35 | public HomeAdapter(Context context) {
36 | mContext = context;
37 | mDataList = new ArrayList<>();
38 | }
39 |
40 | @Override
41 | public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
42 | return new ViewHolder(mContext);
43 | }
44 |
45 | @Override
46 | public void onBindViewHolder(ViewHolder holder, int position) {
47 | holder.bind(mDataList.get(position));
48 | }
49 |
50 | @Override
51 | public int getItemCount() {
52 | return mDataList != null ? mDataList.size() : 0;
53 | }
54 |
55 | public class ViewHolder extends RecyclerView.ViewHolder {
56 |
57 | @BindView(R.id.iv_img)
58 | ImageView mIvImg;
59 | @BindView(R.id.tv_detail)
60 | TextView mTvDetail;
61 |
62 | public ViewHolder(Context context) {
63 | super(View.inflate(context, R.layout.item_home, null));
64 | ButterKnife.bind(this, itemView);
65 | }
66 |
67 | public void bind(final String data) {
68 |
69 | itemView.setOnClickListener(new View.OnClickListener() {
70 | @Override
71 | public void onClick(View v) {
72 | goToDetail();
73 | }
74 | });
75 | }
76 |
77 | private void goToDetail() {
78 | mContext.startActivity(
79 | new Intent(mContext, DetailActivity.class),
80 | ActivityOptionsCompat.makeSceneTransitionAnimation(
81 | (Activity)mContext,
82 | Pair.create((View)mIvImg, mContext.getString(R.string.iv_img_transitionName)),
83 | Pair.create((View)mTvDetail, mContext.getString(R.string.scrollview_detail_transitionName))
84 | ).toBundle()
85 | );
86 | }
87 | }
88 | }
89 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # shareElementDemo
2 | PS: 本来想研究“过场动画”，所以名字取成了`ShareElement`，其实是`Behavior`的Demo，不要在意这些细节。
3 |
4 | # 下拉回退 Activity，layout_behavior 还能这么玩？
5 | 熟悉`layout_behavior`的朋友都知道，它是`CoordinatorLayout`的重要属性。不过，你该不会以为它只能用在`NestedScrollingChild`上吧？如果你真这么觉得，它可会很伤心的：人家才没有这么弱呢。
6 | 其实它的能力远远不止这些。这里和大家分享一个 Demo 和心得。
7 |
8 |
9 | #效果图
10 | 这次仿的是“下拉回退”效果，来自 https://github.com/nickbutcher/plaid，
11 | 这个项目有必要学习一下，堪称神交互。
12 |
13 | 
14 |
15 |
16 | 我的效果:
17 |
18 | 
19 |
20 |
21 |
22 | #CSDN链接
23 | http://blog.csdn.net/a153614131/article/details/53709596
24 |
25 |
26 | #灵感来源
27 | ##BottomSheetBehavior
28 | >之前在掘金上发了处女作——[Android 简易悬停抽屉控件 —— 仿知乎收藏夹](https://gold.xitu.io/entry/5852342f128fe100697fa9b4/detail)。结果分分钟被打脸，这分明就有官方控件啊orz。百度了才知道`support`包里有这玩意——`BottomSheetBehavior`。也正感谢它，有了今天这篇博客。
29 |
30 | 它的用法是这样的：
31 | 在需要的控件上加上一行`app:layout_behavior="@string/bottom_sheet_behavior"`。搞定了，你的`LinearLayout`已经变成一个底部`抽屉控件`了。。。这也太屌了吧。。。
32 | 那我们的demo呢，也跟这个类似。
33 | ```xml
34 |
35 |
36 |
38 | ...
39 |
40 |
41 |
42 | ```
43 | 参考：
44 | [使用Bottom Sheet实现底部菜单](http://www.jianshu.com/p/1024ad202683)
45 |
46 | ##Plaid 的“下拉回退”效果
47 | 如前面效果图所示，我主要模仿了，`下拉回退`和`过场动画`两个效果。
48 |
49 |
50 | ＃实现
51 | `Plaid`里面是通过`自定义View`来实现，那我这里呢用`Behavior`试一下，能更好的复用。
52 |
53 | ##Behavior 的接口
54 | 从接口看，它更像是一个轻量级的 View, 有一些类似 View 的接口：
55 |
56 | - View 的绘制
57 | - onMeasureChild
58 | - onLayoutChild
59 | - View 的事件分发
60 | - onInterceptTouchEvent
61 | - onTouchEvent
62 | - child 间的依赖
63 | - layoutDependsOn
64 | - onDependentViewChanged
65 | - child 的嵌套滑动响应
66 | - onStartNestedScroll
67 | - onNestedPreScroll
68 | - onNestedScroll
69 | - onStopNestedScroll
70 | - ...
71 |
72 | 网上看到的资料中所介绍的更多的为`NestedScroll`这一块。而对于`绘制`和`事件分发`避而不谈，使得`Behavior`少了许多应用场景。事实上，`NestedScroll`使用起来更有局限性，它要求应用该`Behavior`的`View`必须`implement NestedScrollingChild`。反观`绘制`和`分发`，基于它们的`Behavior`可以应用在所有的`View`上，是`自定义View`的一种更轻量的实现。
73 |
74 |
75 | ##behavior 定义与使用
76 | 定义两个`Behavior`:
77 |
78 | - FollowBehavior：一个 "紧贴联动" 的 Behavior，使得 RecyclerView 移动时，ImageView 紧贴着它。这是一个典型的`child 间的依赖`的场景。
79 | - DragDismissBehavior：拖动时拦截事件，使得 RecyclerView 本体移动（而非内部 scroll）。移动到一定距离时，finish Activity。这里用到了`事件分发`和`NestedScroll`两类回调。
80 |
81 | **注意**：`RecyclerView`为`NestedScrollingChild`，因此`下拉回退`很流畅。但是，事实上，`DragDismissBehavior`还可以用在`非NestedScrollingChild`上，例如`ListView`、`ScrollView`等，仍然可以正常的`下拉回退`。只不过`NestedScroll`的回调不在响应，流畅度有些下降。亲们可以自己试一下。
82 |
83 | ```xml
84 |
85 |
86 |
87 |
89 |
90 |
92 |
93 |
94 | ```
95 |
96 | ##代码实现
97 | 主要有这几块：
98 |
99 | - 事件分发：用`mViewDragHelper`处理拖动事件，参考：
100 | - 鸿神的 [Android ViewDragHelper完全解析 自定义ViewGroup神器](http://blog.csdn.net/lmj623565791/article/details/46858663)
101 | - 滑动：smoothScrollTo（），涉及 Scroller 类的使用
102 |
103 | - Behavior 的 NestedScroll 相关回调：也不复杂，需要理解`NestedScrollingParent`和`NestedScrollingChild`。参考：
104 | - [关于CoordinatorLayout与Behavior的一点分析](http://www.jianshu.com/p/a506ee4afecb)
105 | - [自定义Behavior](http://www.jianshu.com/p/ebca9f6096f5)
106 | - [CoordinatorLayout 自定义Behavior并不难，由简到难手把手带你撸三款！](http://www.jcodecraeer.com/a/anzhuokaifa/androidkaifa/2016/0824/6565.html)
107 |
108 | 代码就不贴了，主要是把接口理清楚，像`onMeasure()->onLayout()->onDraw()`一样，挨个往里填实现就是了。
109 | 有兴趣可以看看，自认为可读性还是可以的，嘿嘿。
110 |
111 |
--------------------------------------------------------------------------------
/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 |
--------------------------------------------------------------------------------
/app/src/main/java/com/fashare/shareelementdemo/behavior/DragDismissBehavior.java:
--------------------------------------------------------------------------------
1 | package com.fashare.shareelementdemo.behavior;
2 |
3 | import android.app.Activity;
4 | import android.content.Context;
5 | import android.support.design.widget.BottomSheetBehavior;
6 | import android.support.design.widget.CoordinatorLayout;
7 | import android.support.v4.view.ViewCompat;
8 | import android.support.v4.widget.ViewDragHelper;
9 | import android.util.AttributeSet;
10 | import android.util.Log;
11 | import android.view.MotionEvent;
12 | import android.view.View;
13 | import android.view.ViewGroup;
14 |
15 | /**
16 | * User: fashare(153614131@qq.com)
17 | * Date: 2016-12-16
18 | * Time: 21:16
19 | *
20 | *
21 | * 一个 "下拉回退" 的 Behavior
22 | *
23 | * 仿 {@link BottomSheetBehavior}
24 | */
25 | public class DragDismissBehavior extends CoordinatorLayout.Behavior {
26 | public static final String TAG = "DragDismissBehavior";
27 |
28 | int mDragToDismissRange = 200; // 下拉范围
29 |
30 | private Context mContext;
31 | private CoordinatorLayout mParent;
32 | private View mNestedScrollingChild;
33 | private int mOriginTop;
34 |
35 | public DragDismissBehavior(Context context, AttributeSet attrs) {
36 | super(context, attrs);
37 | mContext = context;
38 | }
39 |
40 | @Override
41 | public boolean onLayoutChild(CoordinatorLayout parent, View child, int layoutDirection) {
42 | if(mViewDragHelper == null)
43 | mViewDragHelper = ViewDragHelper.create(parent, TOUCH_SLOP_SENSITIVITY, mDragCallback);
44 |
45 | if(mParent == null)
46 | mParent = parent;
47 |
48 | if(mNestedScrollingChild == null)
49 | mNestedScrollingChild = child;
50 |
51 | mOriginTop = mNestedScrollingChild.getTop();
52 | return false;
53 | }
54 |
55 | // ------ 滑动部分 begin ------
56 | private void smoothScrollTo(int finalTop){
57 | View child = mNestedScrollingChild;
58 | mViewDragHelper.smoothSlideViewTo(child, 0, finalTop);
59 | ViewCompat.postOnAnimation(child, new SettleRunnable(child));
60 | }
61 |
62 | /**
63 | * smoothScrollTo() 中用到 mScroller,
64 | * 以此 SettleRunnable 代替 @Override computeScroll().
65 | *
66 | * copy from {@link BottomSheetBehavior}
67 | */
68 | private class SettleRunnable implements Runnable {
69 |
70 | private final View mView;
71 |
72 | SettleRunnable(View view) {
73 | mView = view;
74 | }
75 |
76 | @Override
77 | public void run() {
78 | if (mViewDragHelper != null && mViewDragHelper.continueSettling(true)) {
79 | ViewCompat.postOnAnimation(mView, this); // 递归调用
80 | }
81 | }
82 | }
83 |
84 | private void scrollTo(int finalTop){
85 | View child = mNestedScrollingChild;
86 | child.setTop(finalTop);
87 | ViewCompat.postInvalidateOnAnimation(child);
88 | }
89 | // ------ 滑动部分 end ------
90 |
91 | // ------ 事件分发 begin ------
92 | float preY, curY, dy;
93 |
94 | @Override
95 | public boolean onInterceptTouchEvent(CoordinatorLayout parent, View child, MotionEvent event) {
96 | switch (event.getAction()){
97 | case MotionEvent.ACTION_DOWN:
98 | preY = event.getY();
99 | break;
100 |
101 | case MotionEvent.ACTION_MOVE:
102 | curY = event.getY();
103 | dy = curY - preY;
104 | preY = curY;
105 | break;
106 | }
107 |
108 | boolean should = mViewDragHelper.shouldInterceptTouchEvent(event);
109 | Log.d(TAG, "dy: " + dy + "Intercept: " + should);
110 | return should;
111 | }
112 |
113 | @Override
114 | public boolean onTouchEvent(CoordinatorLayout parent, View child, MotionEvent event) {
115 | Log.d(TAG, "onTouchEvent");
116 | mViewDragHelper.processTouchEvent(event);
117 |
118 | return true;
119 | }
120 |
121 | private boolean isScrollDown() {
122 | return dy > 0;
123 | }
124 |
125 | private boolean canScrollDown(View child) {
126 | return ViewCompat.canScrollVertically(child, -1);
127 | }
128 |
129 | private boolean canScrollUp(View child) {
130 | return ViewCompat.canScrollVertically(child, 1);
131 | }
132 |
133 | private ViewDragHelper mViewDragHelper;
134 | private static final float TOUCH_SLOP_SENSITIVITY = 1.f;
135 | private DragCallback mDragCallback = new DragCallback();
136 |
137 | private class DragCallback extends ViewDragHelper.Callback{
138 | // 仅捕获 mNestedScrollingChild
139 | @Override
140 | public boolean tryCaptureView(View child, int pointerId) {
141 | boolean captureView = false;
142 |
143 | if(child == mNestedScrollingChild) {
144 | if(!canScrollUp(child) && !canScrollDown(child)) // 无法滑动, 直接捕获
145 | captureView = true;
146 |
147 | if (isScrollDown() && !canScrollDown(child)) // 向下滑且滑不动, 则捕获 child
148 | captureView = true;
149 | }
150 |
151 | Log.d(TAG, "tryCaptureView: " + captureView);
152 | return captureView;
153 | }
154 |
155 | // 控制边界, 防止 mNestedScrollingChild 的头部超出边界
156 | @Override
157 | public int clampViewPositionVertical(View child, int top, int dy) {
158 | Log.d(TAG, "clampViewPositionVertical: " + top);
159 | if(child == mNestedScrollingChild){
160 | int newTop = top;
161 | newTop = Math.max(newTop, mOriginTop - mDragToDismissRange);
162 | newTop = Math.min(newTop, mOriginTop + mDragToDismissRange);
163 | return newTop;
164 | }
165 | return top;
166 | }
167 |
168 | // 需要指定 "滑动范围", 否则不会捕获 mNestedScrollingChild
169 | @Override
170 | public int getViewVerticalDragRange(View child) {
171 | return mDragToDismissRange;
172 | }
173 |
174 | // 手指释放的时候回调
175 | @Override
176 | public void onViewReleased(View releasedChild, float xvel, float yvel) {
177 | Log.d(TAG, "onViewReleased");
178 | resetTopOrDismiss(releasedChild); // 释放时, 看滑动距离, 决定是否 dismiss
179 | }
180 | }
181 |
182 | /**
183 | * 释放手指时, 判断 top 决定 "复位" 或 "dismiss"
184 | * @param releasedChild
185 | */
186 | private void resetTopOrDismiss(View releasedChild){
187 | if(releasedChild != mNestedScrollingChild)
188 | return ;
189 |
190 | int curTop = releasedChild.getTop();
191 | Log.d(TAG, "top: " + curTop);
192 |
193 | int sign = curTop - mOriginTop > 0? 1: -1;
194 | if(Math.abs(curTop - mOriginTop) > mDragToDismissRange * 0.9){
195 | smoothScrollTo(mOriginTop + mDragToDismissRange * sign);
196 | // dissmiss
197 | mOnDismissListener.onDismiss();
198 |
199 | }else
200 | smoothScrollTo(mOriginTop);
201 | }
202 | // ------ 事件分发 end ------
203 |
204 | // ------ NestScroll begin ------
205 | // 嵌套滑动响应, 若 mNestedScrollingChild 未实现 NestedScrollingChild 接口,
206 | // 将无法响应这部分的行为, 交互上稍显不连贯。
207 | @Override
208 | public boolean onStartNestedScroll(CoordinatorLayout coordinatorLayout, View child, View directTargetChild, View target, int nestedScrollAxes) {
209 | return true;
210 | }
211 |
212 | @Override
213 | public void onNestedPreScroll(CoordinatorLayout coordinatorLayout, View child, View target, int dx, int dy, int[] consumed) {
214 | Log.d(TAG, "onNestedPreScroll: " + "dy: " + dy);
215 | if(target != mNestedScrollingChild)
216 | return ;
217 |
218 | int curTop = child.getTop();
219 | int newTop = curTop - dy;
220 |
221 | if (dy < 0) { // Downward
222 | if (!canScrollDown(target)) { // mNestedScrollingChild 内部无法下滑时, 捕获它, 滑动其本身
223 | if (newTop - mOriginTop <= mDragToDismissRange) {
224 | consumed[1] = dy;
225 | }else
226 | consumed[1] = curTop - mOriginTop - mDragToDismissRange; // 余下的一小段距离
227 |
228 | ViewCompat.offsetTopAndBottom(child, -consumed[1]);
229 | }
230 | }else{ // Upward
231 | if (curTop > mOriginTop && !canScrollDown(target)) { // mNestedScrollingChild 内部无法下滑时, 捕获它, 滑动其本身
232 | if (newTop - mOriginTop >= 0) {
233 | consumed[1] = dy;
234 | }else{
235 | consumed[1] = curTop - mOriginTop; // 余下的一小段距离
236 | }
237 |
238 | ViewCompat.offsetTopAndBottom(child, -consumed[1]);
239 | }
240 | }
241 | }
242 |
243 | @Override
244 | public void onStopNestedScroll(CoordinatorLayout coordinatorLayout, View child, View target) {
245 | Log.d(TAG, "onStopNestedScroll: " + "dy: " + dy);
246 | if(target != mNestedScrollingChild)
247 | return ;
248 |
249 | resetTopOrDismiss(child); // 释放时, 看滑动距离, 决定是否 dismiss
250 | }
251 | // ------ NestScroll end ------
252 |
253 | // ------ 对外接口 begin ------
254 | public interface OnDismissListener{
255 | void onDismiss();
256 | }
257 |
258 | private OnDismissListener mOnDismissListener = new FinishActivity();
259 |
260 | public void setOnDismissListener(OnDismissListener onDismissListener) {
261 | mOnDismissListener = onDismissListener;
262 | }
263 |
264 | private class FinishActivity implements OnDismissListener{
265 | @Override
266 | public void onDismiss() {
267 | if(mContext instanceof Activity){
268 | ((Activity)mContext).finishAfterTransition();
269 | }
270 | }
271 | }
272 |
273 | public static DragDismissBehavior from(View view) {
274 | ViewGroup.LayoutParams params = view.getLayoutParams();
275 | if (!(params instanceof CoordinatorLayout.LayoutParams)) {
276 | throw new IllegalArgumentException("The view is not a child of CoordinatorLayout");
277 | }
278 | CoordinatorLayout.Behavior behavior = ((CoordinatorLayout.LayoutParams) params)
279 | .getBehavior();
280 |
281 | if (!(behavior instanceof DragDismissBehavior)) {
282 | throw new IllegalArgumentException(
283 | "The view is not associated with DragDismissBehavior");
284 | }
285 | return (DragDismissBehavior) behavior;
286 | }
287 | // ------ 对外接口 end ------
288 | }
289 |
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