├── .gitignore
├── .idea
├── misc.xml
└── vcs.xml
├── LICENSE
├── README.md
├── app
├── .gitignore
├── build.gradle
├── proguard-rules.pro
└── src
│ ├── androidTest
│ └── java
│ │ └── com
│ │ └── zp
│ │ └── rcsv
│ │ └── sample
│ │ └── ExampleInstrumentedTest.java
│ ├── main
│ ├── AndroidManifest.xml
│ ├── java
│ │ └── com
│ │ │ └── zp
│ │ │ └── rcsv
│ │ │ └── sample
│ │ │ ├── AppInfo.java
│ │ │ ├── CardStackActivity.java
│ │ │ ├── MainActivity.java
│ │ │ └── RCSAdapter.java
│ └── res
│ │ ├── drawable-v24
│ │ └── ic_launcher_foreground.xml
│ │ ├── drawable
│ │ └── ic_launcher_background.xml
│ │ ├── layout
│ │ ├── activity_card_stack.xml
│ │ ├── activity_main.xml
│ │ └── rcs_activity_item.xml
│ │ ├── mipmap-anydpi-v26
│ │ ├── ic_launcher.xml
│ │ └── ic_launcher_round.xml
│ │ ├── mipmap-hdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-mdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-xhdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-xxhdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ ├── mipmap-xxxhdpi
│ │ ├── ic_launcher.png
│ │ └── ic_launcher_round.png
│ │ └── values
│ │ ├── colors.xml
│ │ ├── strings.xml
│ │ └── styles.xml
│ └── test
│ └── java
│ └── com
│ └── zp
│ └── rcsv
│ └── sample
│ └── ExampleUnitTest.java
├── build.gradle
├── cardstackview
├── .gitignore
├── build.gradle
├── proguard-rules.pro
└── src
│ ├── main
│ ├── AndroidManifest.xml
│ ├── java
│ │ └── com
│ │ │ └── devilist
│ │ │ └── cardstackview
│ │ │ ├── CardManager.java
│ │ │ ├── CardRecyclerView.java
│ │ │ ├── PokerCardManager.java
│ │ │ └── TowerCardManager.java
│ └── res
│ │ └── values
│ │ └── strings.xml
│ └── test
│ └── java
│ └── com
│ └── devilist
│ └── cardstackview
│ └── ExampleUnitTest.java
├── gradle.properties
├── images
└── image.gif
└── settings.gradle
/.gitignore:
--------------------------------------------------------------------------------
1 | *.iml
2 | .gradle
3 | /local.properties
4 | /.idea/workspace.xml
5 | /.idea/libraries
6 | .DS_Store
7 | /build
8 | /captures
9 | .externalNativeBuild
10 |
--------------------------------------------------------------------------------
/.idea/misc.xml:
--------------------------------------------------------------------------------
1 |
2 |
3 |
4 |
5 |
6 |
17 |
27 |
28 |
29 |
--------------------------------------------------------------------------------
/.idea/vcs.xml:
--------------------------------------------------------------------------------
1 |
2 |
3 |
4 |
5 |
6 |
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
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/README.md:
--------------------------------------------------------------------------------
1 | # RecyclerCardStackView
2 |
3 | 这是一个用Recyclerview实现的模仿探探的CardStackView。
4 |
5 | 目前有两种card组织形式。
6 |
7 | 
8 |
9 | # 调用方法
10 |
11 | 和正常使用recyclerview步骤一样:
12 |
13 |
14 |
15 | CardRecyclerView crv_list = findViewById(R.id.crv_list);
16 | RCSAdapter adapter = new RCSAdapter(this);
17 | adapter.addData(appInfolist);
18 | crv_list.setAdapter(adapter);
19 | TowerCardManager towerCardManager = new TowerCardManager(this, crv_list);
20 | towerCardManager.setCardOffset(25); // 设置card和card之间的偏移
21 | towerCardManager.setCardElevation(50); // 设置card和card之间的elevation
22 | towerCardManager.setOnCardDragListener(this); // card拖动监听
23 | crv_list.setLayoutManager(towerCardManager);
24 |
25 |
26 |
27 |
28 | 提供了手动drop card的方法:
29 |
30 |
31 |
32 | public void dropCardNoTouch(int orientation) // orientation > 0 向右丢弃,反之向左丢弃
33 |
34 |
35 |
36 |
37 | 拖拽card的监听:CardManager.OnCardDragListener
38 |
39 |
40 |
41 | @Override
42 | public void onDraggingStateChanged(View view, boolean isDragging, boolean isDropped, float offsetX, float offsetY) {
43 | // 这个方法监听card状态变化
44 | isDragging: 当前card是否正在拖拽中(MotionEvent.ACTION_MOVE)
45 | isDropped: 当前card是否已经被丢弃
46 | offsetX,offsetY: 一次完整的拖动释放生命周期过程中card的偏移
47 |
48 | isDragging = false && isDropped == false 代表card处于释放状态
49 | }
50 |
51 | @Override
52 | public void onCardDragging(View view, float offsetX, float offsetY) {
53 | // 这个方法监听card拖动过程中的偏移 isDragging = true
54 |
55 | }
56 |
57 |
58 |
59 |
60 | 布局中使用:
61 |
62 |
63 |
64 |
68 |
69 |
70 |
71 |
--------------------------------------------------------------------------------
/app/.gitignore:
--------------------------------------------------------------------------------
1 | /build
2 |
--------------------------------------------------------------------------------
/app/build.gradle:
--------------------------------------------------------------------------------
1 | apply plugin: 'com.android.application'
2 |
3 | android {
4 | compileSdkVersion 26
5 | defaultConfig {
6 | applicationId "com.zp.rcsv.sample"
7 | minSdkVersion 14
8 | targetSdkVersion 26
9 | versionCode 1
10 | versionName "1.0"
11 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
12 | }
13 | buildTypes {
14 | release {
15 | minifyEnabled false
16 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
17 | }
18 | }
19 | }
20 |
21 | dependencies {
22 | implementation fileTree(dir: 'libs', include: ['*.jar'])
23 | implementation 'com.android.support:appcompat-v7:26.1.0'
24 | implementation 'com.android.support:recyclerview-v7:26.1.0'
25 | implementation 'com.android.support:cardview-v7:26.1.0'
26 | implementation 'com.android.support.constraint:constraint-layout:1.0.2'
27 | testImplementation 'junit:junit:4.12'
28 | androidTestImplementation 'com.android.support.test:runner:1.0.1'
29 | androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
30 | implementation project(path: ':cardstackview')
31 |
32 | }
33 |
--------------------------------------------------------------------------------
/app/proguard-rules.pro:
--------------------------------------------------------------------------------
1 | # Add project specific ProGuard rules here.
2 | # You can control the set of applied configuration files using the
3 | # proguardFiles setting in build.gradle.
4 | #
5 | # For more details, see
6 | # http://developer.android.com/guide/developing/tools/proguard.html
7 |
8 | # If your project uses WebView with JS, uncomment the following
9 | # and specify the fully qualified class name to the JavaScript interface
10 | # class:
11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
12 | # public *;
13 | #}
14 |
15 | # Uncomment this to preserve the line number information for
16 | # debugging stack traces.
17 | #-keepattributes SourceFile,LineNumberTable
18 |
19 | # If you keep the line number information, uncomment this to
20 | # hide the original source file name.
21 | #-renamesourcefileattribute SourceFile
22 |
--------------------------------------------------------------------------------
/app/src/androidTest/java/com/zp/rcsv/sample/ExampleInstrumentedTest.java:
--------------------------------------------------------------------------------
1 | package com.zp.rcsv.sample;
2 |
3 | import android.content.Context;
4 | import android.support.test.InstrumentationRegistry;
5 | import android.support.test.runner.AndroidJUnit4;
6 |
7 | import org.junit.Test;
8 | import org.junit.runner.RunWith;
9 |
10 | import static org.junit.Assert.*;
11 |
12 | /**
13 | * Instrumented test, which will execute on an Android device.
14 | *
15 | * @see Testing documentation
16 | */
17 | @RunWith(AndroidJUnit4.class)
18 | public class ExampleInstrumentedTest {
19 | @Test
20 | public void useAppContext() throws Exception {
21 | // Context of the app under test.
22 | Context appContext = InstrumentationRegistry.getTargetContext();
23 |
24 | assertEquals("com.zp.rcsv.sample", appContext.getPackageName());
25 | }
26 | }
27 |
--------------------------------------------------------------------------------
/app/src/main/AndroidManifest.xml:
--------------------------------------------------------------------------------
1 |
2 |
4 |
5 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
--------------------------------------------------------------------------------
/app/src/main/java/com/zp/rcsv/sample/AppInfo.java:
--------------------------------------------------------------------------------
1 | package com.zp.rcsv.sample;
2 |
3 | import android.graphics.drawable.Drawable;
4 |
5 | /**
6 | * Created by zengpu on 16/10/29.
7 | */
8 |
9 | public class AppInfo {
10 |
11 | private String appName;
12 | private Drawable appIcon;
13 | private int versionCode;
14 | private String versionName;
15 | private String packageName;
16 |
17 | public String getAppName() {
18 | return appName;
19 | }
20 |
21 | public void setAppName(String appName) {
22 | this.appName = appName;
23 | }
24 |
25 | public Drawable getAppIcon() {
26 | return appIcon;
27 | }
28 |
29 | public void setAppIcon(Drawable appIcon) {
30 | this.appIcon = appIcon;
31 | }
32 |
33 | public int getVersionCode() {
34 | return versionCode;
35 | }
36 |
37 | public void setVersionCode(int versionCode) {
38 | this.versionCode = versionCode;
39 | }
40 |
41 | public String getVersionName() {
42 | return versionName;
43 | }
44 |
45 | public void setVersionName(String versionName) {
46 | this.versionName = versionName;
47 | }
48 |
49 | public String getPackageName() {
50 | return packageName;
51 | }
52 |
53 | public void setPackageName(String packageName) {
54 | this.packageName = packageName;
55 | }
56 | }
57 |
--------------------------------------------------------------------------------
/app/src/main/java/com/zp/rcsv/sample/CardStackActivity.java:
--------------------------------------------------------------------------------
1 | package com.zp.rcsv.sample;
2 |
3 | import android.content.Context;
4 | import android.content.Intent;
5 | import android.content.pm.ApplicationInfo;
6 | import android.content.pm.PackageInfo;
7 | import android.graphics.drawable.Drawable;
8 | import android.os.Bundle;
9 | import android.support.annotation.Nullable;
10 | import android.support.v7.app.AppCompatActivity;
11 | import android.view.View;
12 | import android.widget.Toast;
13 |
14 | import com.devilist.cardstackview.CardManager;
15 | import com.devilist.cardstackview.CardRecyclerView;
16 | import com.devilist.cardstackview.PokerCardManager;
17 | import com.devilist.cardstackview.TowerCardManager;
18 |
19 | import java.util.ArrayList;
20 | import java.util.List;
21 |
22 | /**
23 | * Created by zengp on 2017/12/5.
24 | */
25 |
26 | public class CardStackActivity extends AppCompatActivity implements RCSAdapter.OnItemClickListener,
27 | CardManager.OnCardDragListener {
28 |
29 | private CardRecyclerView crv_list;
30 |
31 | private List appInfolist = new ArrayList<>();
32 |
33 | public static void start(Context context, String type) {
34 | Intent starter = new Intent(context, CardStackActivity.class);
35 | starter.putExtra("type", type);
36 | context.startActivity(starter);
37 | }
38 |
39 | @Override
40 | protected void onCreate(@Nullable Bundle savedInstanceState) {
41 | super.onCreate(savedInstanceState);
42 | setContentView(R.layout.activity_card_stack);
43 |
44 | new Thread(new Runnable() {
45 | @Override
46 | public void run() {
47 | initData();
48 | runOnUiThread(new Runnable() {
49 | @Override
50 | public void run() {
51 | initView();
52 | }
53 | });
54 | }
55 | }).start();
56 |
57 | }
58 |
59 | private void initView() {
60 | findViewById(R.id.tv_load).setVisibility(View.GONE);
61 | crv_list = findViewById(R.id.crv_list);
62 | RCSAdapter adapter = new RCSAdapter(this);
63 | adapter.addData(appInfolist);
64 | adapter.setOnItemClickListener(this);
65 | crv_list.setAdapter(adapter);
66 | String type = getIntent().getStringExtra("type");
67 | if (type.equals("tower")) {
68 | TowerCardManager towerCardManager = new TowerCardManager(this, crv_list);
69 | towerCardManager.setCardOffset(25);
70 | towerCardManager.setCardElevation(50);
71 | towerCardManager.setOnCardDragListener(this);
72 | crv_list.setLayoutManager(towerCardManager);
73 | } else if (type.equals("poker")) {
74 | PokerCardManager pokerCardManager = new PokerCardManager(this, crv_list);
75 | pokerCardManager.setCardOffset(25);
76 | pokerCardManager.setCardElevation(50);
77 | pokerCardManager.setOnCardDragListener(this);
78 | crv_list.setLayoutManager(pokerCardManager);
79 | }
80 | }
81 |
82 | private void initData() {
83 |
84 | List packages = getPackageManager().getInstalledPackages(0);
85 |
86 | for (int i = 0; i < packages.size(); i++) {
87 |
88 | PackageInfo packageInfo = packages.get(i);
89 | String appName = packageInfo.applicationInfo.loadLabel(getPackageManager()).toString();
90 | Drawable appIcon = packageInfo.applicationInfo.loadIcon(getPackageManager());
91 | int versionCode = packageInfo.versionCode;
92 | String versionName = packageInfo.versionName;
93 | String packageName = packageInfo.packageName;
94 |
95 | AppInfo appInfo = new AppInfo();
96 | appInfo.setAppName(appName);
97 | appInfo.setAppIcon(appIcon);
98 | appInfo.setVersionCode(versionCode);
99 | appInfo.setVersionName(versionName);
100 | appInfo.setPackageName(packageName);
101 |
102 | if ((packageInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) == 0) {
103 | appInfolist.add(appInfo);
104 | }
105 | }
106 | }
107 |
108 | @Override
109 | public void onDraggingStateChanged(View view, boolean isDragging, boolean isDropped, float offsetX, float offsetY) {
110 |
111 | }
112 |
113 | @Override
114 | public void onCardDragging(View view, float offsetX, float offsetY) {
115 |
116 | }
117 |
118 | @Override
119 | public void onItemClick(View view, int position) {
120 | Toast.makeText(this, "onItemClick", Toast.LENGTH_SHORT).show();
121 | }
122 | }
123 |
--------------------------------------------------------------------------------
/app/src/main/java/com/zp/rcsv/sample/MainActivity.java:
--------------------------------------------------------------------------------
1 | package com.zp.rcsv.sample;
2 |
3 | import android.support.v7.app.AppCompatActivity;
4 | import android.os.Bundle;
5 | import android.view.View;
6 |
7 | import com.devilist.cardstackview.CardRecyclerView;
8 |
9 | public class MainActivity extends AppCompatActivity {
10 |
11 | @Override
12 | protected void onCreate(Bundle savedInstanceState) {
13 | super.onCreate(savedInstanceState);
14 | setContentView(R.layout.activity_main);
15 |
16 | findViewById(R.id.tv_tower).setOnClickListener(new View.OnClickListener() {
17 | @Override
18 | public void onClick(View v) {
19 | CardStackActivity.start(MainActivity.this, "tower");
20 | }
21 | });
22 | findViewById(R.id.tv_poker).setOnClickListener(new View.OnClickListener() {
23 | @Override
24 | public void onClick(View v) {
25 | CardStackActivity.start(MainActivity.this, "poker");
26 | }
27 | });
28 | }
29 | }
30 |
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/app/src/main/java/com/zp/rcsv/sample/RCSAdapter.java:
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1 | package com.zp.rcsv.sample;
2 |
3 | import android.content.Context;
4 | import android.support.v7.widget.CardView;
5 | import android.support.v7.widget.RecyclerView;
6 | import android.view.LayoutInflater;
7 | import android.view.View;
8 | import android.view.ViewGroup;
9 | import android.widget.ImageView;
10 | import android.widget.TextView;
11 |
12 | import com.devilist.cardstackview.CardRecyclerView;
13 |
14 | import java.util.ArrayList;
15 | import java.util.List;
16 |
17 | /**
18 | * Created by zengpu on 2016/10/28.
19 | */
20 |
21 | public class RCSAdapter extends CardRecyclerView.CardAdapter {
22 |
23 | private Context context;
24 | private List appInfolist = new ArrayList<>();
25 | private List tempData = new ArrayList<>();
26 | private OnItemClickListener mOnItemClickListener;
27 |
28 |
29 | public RCSAdapter(Context mContext) {
30 | this.context = mContext;
31 | }
32 |
33 | public void addData(List data) {
34 | this.appInfolist = data;
35 | notifyDataSetChanged();
36 | }
37 |
38 | @Override
39 | public int getVisibleCardCount() {
40 | return 3;
41 | }
42 |
43 | @Override
44 | protected void delItem(int position) {
45 | if (null != appInfolist && appInfolist.size() > 0) {
46 | appInfolist.remove(position);
47 | notifyItemRemoved(position);
48 | }
49 | }
50 |
51 | @Override
52 | protected void recycleData() {
53 | if (isEnableDataRecycle()) {
54 | if (appInfolist.size() > getVisibleCardCount() + 1) {
55 | tempData.add(appInfolist.get(0));
56 | delItem(0);
57 | } else {
58 | tempData.add(appInfolist.get(0));
59 | appInfolist.remove(0);
60 | notifyItemRemoved(0);
61 | int start = appInfolist.size();
62 | appInfolist.addAll(tempData);
63 | notifyItemRangeInserted(start, tempData.size());
64 | // notifyDataSetChanged();
65 | tempData.clear();
66 | }
67 | }
68 | }
69 |
70 | @Override
71 | protected boolean isEnableDataRecycle() {
72 | return true;
73 | }
74 |
75 | @Override
76 | public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
77 | View v = LayoutInflater.from(context).inflate(R.layout.rcs_activity_item, parent, false);
78 | return new ViewHolder(v, mOnItemClickListener);
79 | }
80 |
81 | @Override
82 | public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
83 | AppInfo appInfo = appInfolist.get(position);
84 | ViewHolder mViewHolder = (ViewHolder) holder;
85 | mViewHolder.appNameTv.setText(appInfo.getAppName());
86 | mViewHolder.appIconIv.setImageDrawable(appInfo.getAppIcon());
87 | mViewHolder.appVNameTv.setText("v" + appInfo.getVersionName());
88 | mViewHolder.appPnameTv.setText(appInfo.getPackageName());
89 | }
90 |
91 | @Override
92 | public int getItemCount() {
93 | return appInfolist.size();
94 | }
95 |
96 | public interface OnItemClickListener {
97 | void onItemClick(View view, int position);
98 | }
99 |
100 | public void setOnItemClickListener(OnItemClickListener listener) {
101 | mOnItemClickListener = listener;
102 | }
103 |
104 | public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
105 |
106 | private CardView rootCv;
107 | private ImageView appIconIv;
108 | private TextView appNameTv;
109 | private TextView appVCodeTv;
110 | private TextView appVNameTv;
111 | private TextView appPnameTv;
112 | private OnItemClickListener mListener;
113 |
114 | public ViewHolder(View itemView, OnItemClickListener listener) {
115 | super(itemView);
116 | mListener = listener;
117 |
118 | rootCv = (CardView) itemView.findViewById(R.id.cv_view);
119 | appIconIv = (ImageView) itemView.findViewById(R.id.iv_app_icon);
120 | appNameTv = (TextView) itemView.findViewById(R.id.tv_app_name);
121 | appVNameTv = (TextView) itemView.findViewById(R.id.tv_app_version_name);
122 | appPnameTv = (TextView) itemView.findViewById(R.id.tv_app_package_name);
123 |
124 | rootCv.setOnClickListener(this);
125 | }
126 |
127 | @Override
128 | public void onClick(View v) {
129 | mListener.onItemClick(v, getLayoutPosition());
130 | }
131 | }
132 | }
133 |
134 |
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/app/src/main/res/drawable-v24/ic_launcher_foreground.xml:
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/app/src/main/res/values/colors.xml:
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3 | #3F51B5
4 | #303F9F
5 | #FF4081
6 |
7 |
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/app/src/main/res/values/strings.xml:
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1 |
2 | RecyclerCardStackVIew
3 |
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/app/src/main/res/values/styles.xml:
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11 |
12 |
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/app/src/test/java/com/zp/rcsv/sample/ExampleUnitTest.java:
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1 | package com.zp.rcsv.sample;
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 | }
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/build.gradle:
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1 | // Top-level build file where you can add configuration options common to all sub-projects/modules.
2 |
3 | buildscript {
4 |
5 | repositories {
6 | google()
7 | jcenter()
8 | }
9 | dependencies {
10 | classpath 'com.android.tools.build:gradle:3.1.4'
11 |
12 |
13 | // NOTE: Do not place your application dependencies here; they belong
14 | // in the individual module build.gradle files
15 | }
16 | }
17 |
18 | allprojects {
19 | repositories {
20 | google()
21 | jcenter()
22 | }
23 | }
24 |
25 | task clean(type: Delete) {
26 | delete rootProject.buildDir
27 | }
28 |
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/cardstackview/.gitignore:
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1 | /build
2 |
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/cardstackview/build.gradle:
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1 | apply plugin: 'com.android.library'
2 |
3 | android {
4 | compileSdkVersion 26
5 |
6 | defaultConfig {
7 | minSdkVersion 14
8 | targetSdkVersion 26
9 | versionCode 1
10 | versionName "1.0"
11 |
12 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
13 |
14 | }
15 |
16 | buildTypes {
17 | debug {
18 | minifyEnabled false
19 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
20 | }
21 | }
22 | buildTypes {
23 | release {
24 | minifyEnabled false
25 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
26 | }
27 | }
28 |
29 | }
30 |
31 | dependencies {
32 | implementation fileTree(dir: 'libs', include: ['*.jar'])
33 | implementation 'com.android.support:appcompat-v7:26.1.0'
34 | implementation 'com.android.support:recyclerview-v7:26.1.0'
35 |
36 | }
37 |
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/cardstackview/proguard-rules.pro:
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1 | # Add project specific ProGuard rules here.
2 | # You can control the set of applied configuration files using the
3 | # proguardFiles setting in build.gradle.
4 | #
5 | # For more details, see
6 | # http://developer.android.com/guide/developing/tools/proguard.html
7 |
8 | # If your project uses WebView with JS, uncomment the following
9 | # and specify the fully qualified class name to the JavaScript interface
10 | # class:
11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
12 | # public *;
13 | #}
14 |
15 | # Uncomment this to preserve the line number information for
16 | # debugging stack traces.
17 | #-keepattributes SourceFile,LineNumberTable
18 |
19 | # If you keep the line number information, uncomment this to
20 | # hide the original source file name.
21 | #-renamesourcefileattribute SourceFile
22 |
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/cardstackview/src/main/AndroidManifest.xml:
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1 |
3 |
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/cardstackview/src/main/java/com/devilist/cardstackview/CardManager.java:
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1 | /*
2 | * Copyright 2017 zengpu
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 |
18 | package com.devilist.cardstackview;
19 |
20 | import android.content.Context;
21 | import android.support.v7.widget.RecyclerView;
22 | import android.view.MotionEvent;
23 | import android.view.View;
24 | import android.view.ViewGroup;
25 | import android.view.WindowManager;
26 |
27 |
28 | /**
29 | * a helper to handle the drag event of the {@link CardRecyclerView}'s child views;
30 | * Created by zengp on 2017/9/30.
31 | */
32 |
33 | public abstract class CardManager extends RecyclerView.LayoutManager implements View.OnTouchListener {
34 |
35 | protected int mScreenWidth;
36 | protected int mScreenHeight;
37 | protected CardRecyclerView mRecyclerView;
38 |
39 | protected OnCardDragListener mListener;
40 |
41 | public CardManager(Context context, CardRecyclerView recyclerView) {
42 | WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
43 | mScreenWidth = wm.getDefaultDisplay().getWidth();
44 | mScreenHeight = wm.getDefaultDisplay().getHeight();
45 | mRecyclerView = recyclerView;
46 | }
47 |
48 | @Override
49 | public RecyclerView.LayoutParams generateDefaultLayoutParams() {
50 | return new RecyclerView.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
51 | RecyclerView.LayoutParams.WRAP_CONTENT);
52 | }
53 |
54 | public abstract void onLayoutCards(RecyclerView.Recycler recycler, RecyclerView.State state);
55 |
56 | public void dropCardNoTouch(int orientation) {
57 | }
58 |
59 | @Override
60 | public final void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) {
61 |
62 | if (getItemCount() <= 0) {
63 | removeAndRecycleAllViews(recycler);
64 | return;
65 | }
66 |
67 | // remove all attached child views
68 | detachAndScrapAttachedViews(recycler);
69 |
70 | // re-layout
71 | onLayoutCards(recycler, state);
72 |
73 | }
74 |
75 | @Override
76 | public boolean onTouch(View v, MotionEvent event) {
77 | return false;
78 | }
79 |
80 | public void setOnCardDragListener(OnCardDragListener listener) {
81 | this.mListener = listener;
82 | }
83 |
84 | public interface OnCardDragListener {
85 |
86 | void onDraggingStateChanged(View view, boolean isDragging, boolean isDropped, float offsetX, float offsetY);
87 |
88 | void onCardDragging(View view, float offsetX, float offsetY);
89 | }
90 |
91 | }
92 |
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/cardstackview/src/main/java/com/devilist/cardstackview/CardRecyclerView.java:
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1 | /*
2 | * Copyright 2017 zengpu
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 |
18 | package com.devilist.cardstackview;
19 |
20 | import android.content.Context;
21 | import android.support.annotation.Nullable;
22 | import android.support.v7.widget.RecyclerView;
23 | import android.util.AttributeSet;
24 |
25 |
26 | /**
27 | * Created by zengp on 2017/09/30.
28 | */
29 |
30 | public class CardRecyclerView extends RecyclerView {
31 |
32 | public CardRecyclerView(Context context) {
33 | this(context, null);
34 | }
35 |
36 | public CardRecyclerView(Context context, @Nullable AttributeSet attrs) {
37 | this(context, attrs, 0);
38 | }
39 |
40 | public CardRecyclerView(Context context, @Nullable AttributeSet attrs, int defStyle) {
41 | super(context, attrs, defStyle);
42 | }
43 |
44 | public int getVisibleCardCount() {
45 | if (getAdapter().getVisibleCardCount() <= 0)
46 | throw new IllegalArgumentException("visibleCardCount must be over zero !!!");
47 | return getAdapter().getVisibleCardCount();
48 | }
49 |
50 | @Override
51 | public void setAdapter(Adapter adapter) {
52 | if (adapter instanceof CardAdapter)
53 | super.setAdapter(adapter);
54 | else
55 | throw new IllegalArgumentException("");
56 | }
57 |
58 | @Override
59 | public CardAdapter getAdapter() {
60 | return (CardAdapter) super.getAdapter();
61 | }
62 |
63 | @Override
64 | public void setLayoutManager(LayoutManager layout) {
65 | if (layout instanceof CardManager)
66 | super.setLayoutManager(layout);
67 | else
68 | throw new IllegalArgumentException("");
69 | }
70 |
71 | @Override
72 | public CardManager getLayoutManager() {
73 | return (CardManager) super.getLayoutManager();
74 | }
75 |
76 | public void dropCard(int orientation) {
77 | if (getChildCount() > 0)
78 | getLayoutManager().dropCardNoTouch(orientation);
79 | }
80 |
81 | protected void dropCard() {
82 | if (getAdapter().isEnableDataRecycle()) {
83 | getAdapter().recycleData();
84 | } else
85 | getAdapter().delItem(0);
86 | }
87 |
88 | public static abstract class CardAdapter extends Adapter {
89 |
90 | protected abstract void delItem(int position);
91 |
92 | protected abstract void recycleData();
93 |
94 | public int getVisibleCardCount() {
95 | return 3;
96 | }
97 |
98 | protected boolean isEnableDataRecycle() {
99 | return false;
100 | }
101 |
102 | }
103 | }
104 |
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/cardstackview/src/main/java/com/devilist/cardstackview/PokerCardManager.java:
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1 | /*
2 | * Copyright 2017 zengpu
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 |
18 | package com.devilist.cardstackview;
19 |
20 | import android.animation.Animator;
21 | import android.animation.AnimatorListenerAdapter;
22 | import android.animation.ValueAnimator;
23 | import android.content.Context;
24 | import android.graphics.Rect;
25 | import android.support.v4.view.ViewCompat;
26 | import android.support.v7.widget.RecyclerView;
27 | import android.view.MotionEvent;
28 | import android.view.VelocityTracker;
29 | import android.view.View;
30 | import android.view.ViewGroup;
31 | import android.view.animation.OvershootInterpolator;
32 |
33 |
34 | /**
35 | * Created by zengp on 2017/09/30.
36 | */
37 | public class PokerCardManager extends CardManager {
38 |
39 | private float mTouchDownX = 0, mTouchDownY = 0;
40 | private boolean mIsTouchUp = false;
41 | // the dragged border position to differentiate whether the dragged card be drop or reset
42 | private float mDragThresholdX, mDragThresholdY;
43 | private int mMinVelocityThreshold = 2000;
44 | private int mMaxVelocityThreshold = 4500;
45 |
46 | private VelocityTracker mVelocityTracker = null;
47 |
48 | private int mCardOffset = 10;
49 | private int mCardElevation = 10;
50 |
51 | public PokerCardManager(Context context, CardRecyclerView recyclerView) {
52 | super(context, recyclerView);
53 | // forbidden the default item animator
54 | mRecyclerView.setItemAnimator(null);
55 | mDragThresholdX = mScreenWidth / 3;
56 | mDragThresholdY = mScreenHeight / 3;
57 | ViewCompat.setTranslationZ(mRecyclerView, -1);
58 | }
59 |
60 | public void setCardOffset(int cardOffset) {
61 | if (cardOffset < 0)
62 | throw new IllegalArgumentException("cardOffset must be over zero !!!");
63 | this.mCardOffset = cardOffset;
64 | }
65 |
66 | public void setCardElevation(int cardElevation) {
67 | if (cardElevation < 0)
68 | throw new IllegalArgumentException("cardElevation must be over zero !!!");
69 | this.mCardElevation = cardElevation;
70 | }
71 |
72 |
73 | @Override
74 | public void onLayoutCards(RecyclerView.Recycler recycler, RecyclerView.State state) {
75 | onLayoutCards(recycler, state, mRecyclerView.getVisibleCardCount(), mCardOffset, mCardElevation);
76 | setTargetDragCard();
77 | }
78 |
79 | private void onLayoutCards(RecyclerView.Recycler recycler, RecyclerView.State state,
80 | int visibleCardCount, int cardOffset, int cardElevation) {
81 | if (getItemCount() > 0) {
82 | // calculate the validate areas that all the visible cards cover.
83 | int left = 0;
84 | int top = 0;
85 | // in order to compat lower version, card must be added from last to first,
86 | // and if all the cards are added at every time this method invoked, there may
87 | // be some performance problems happened, such as OOM crash, long time wasted to
88 | // attached cards,and less smoothly when scroll etc.So to avoid these potential
89 | // problems, only necessary cards will be attached to improve performance
90 | int maxAttachChildrenCount = Math.min(mRecyclerView.getVisibleCardCount(), getItemCount() - 1);
91 | for (int i = maxAttachChildrenCount; i >= 0; i--) {
92 | View child_i = recycler.getViewForPosition(i);
93 | addView(child_i);
94 | measureChildWithMargins(child_i, 0, 0);
95 | int childWidth = getDecoratedMeasuredWidth(child_i);
96 | int childHeight = getDecoratedMeasuredHeight(child_i);
97 | if (i == maxAttachChildrenCount) {
98 | int childWidthWithTotalOffset = childWidth + cardOffset * (visibleCardCount - 1);
99 | int childHeightWithTotalOffset = childHeight + cardOffset * (visibleCardCount - 1);
100 | int parentWExcludePadding = getWidth() - getPaddingLeft() - getPaddingRight();
101 | int parentHExcludePadding = getHeight() - getPaddingTop() - getPaddingBottom();
102 | ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) child_i.getLayoutParams();
103 | int childMarginHorizOffset = params.leftMargin - params.rightMargin;
104 | int childMarginVertOffset = params.topMargin - params.bottomMargin;
105 | left = (parentWExcludePadding - childWidthWithTotalOffset) / 2 + getPaddingLeft() + childMarginHorizOffset;
106 | top = (parentHExcludePadding - childHeightWithTotalOffset) / 2 + getPaddingTop() + childMarginVertOffset;
107 | }
108 | // remove decorator area
109 | Rect childRect = new Rect();
110 | calculateItemDecorationsForChild(child_i, childRect);
111 | int left_i, top_i;
112 | if (i <= visibleCardCount - 1) {
113 | left_i = left + cardOffset * i;
114 | top_i = top + cardOffset * (visibleCardCount - 1 - i);
115 | // set elevations for all the visible children
116 | ViewCompat.setTranslationZ(child_i, cardElevation * (visibleCardCount - i));
117 | } else {
118 | left_i = left + cardOffset * (visibleCardCount - 1);
119 | top_i = top;
120 | ViewCompat.setTranslationZ(child_i, 0);
121 | }
122 | // reset card
123 | child_i.setTranslationY(0);
124 | child_i.setTranslationX(0);
125 | child_i.setAlpha(1f);
126 | child_i.setRotation(0);
127 | child_i.setScaleX(1f);
128 | child_i.setScaleY(1f);
129 | layoutDecorated(child_i, left_i, top_i, left_i + childWidth, top_i + childHeight);
130 | }
131 | }
132 | }
133 |
134 | private void setTargetDragCard() {
135 | // count of all the attached cards
136 | int maxAttachChildrenCount = Math.min(mRecyclerView.getVisibleCardCount(), getItemCount() - 1);
137 | if (maxAttachChildrenCount >= 0) {
138 | for (int i = 0; i <= maxAttachChildrenCount; i++) {
139 | getChildAt(i).setOnTouchListener(this);
140 | if (i == maxAttachChildrenCount) {
141 | dispatchOnDragEvent(getChildAt(i), false, false, 0, 0);
142 | }
143 | }
144 | }
145 | }
146 |
147 | @Override
148 | public boolean onTouch(View v, MotionEvent event) {
149 | int maxAttachChildrenCount = Math.min(mRecyclerView.getVisibleCardCount(), getItemCount() - 1);
150 | if (v != getChildAt(maxAttachChildrenCount))
151 | return true;
152 | if (mVelocityTracker == null) {
153 | mVelocityTracker = VelocityTracker.obtain();
154 | }
155 | mVelocityTracker.addMovement(event);
156 | int velocityX = 0;
157 | int velocityY = 0;
158 | if (event.getAction() == MotionEvent.ACTION_DOWN) {
159 | ViewCompat.setTranslationZ(mRecyclerView, 1);
160 | mTouchDownX = event.getRawX();
161 | mTouchDownY = event.getRawY();
162 | mIsTouchUp = false;
163 | } else if (event.getAction() == MotionEvent.ACTION_MOVE) {
164 | if (mIsTouchUp) {
165 | mTouchDownX = event.getRawX();
166 | mTouchDownY = event.getRawY();
167 | mIsTouchUp = false;
168 | }
169 | ViewCompat.setTranslationZ(mRecyclerView, 1);
170 | if (event.getEventTime() - event.getDownTime() >= 100) {
171 | dragCard(v, event.getRawX() - mTouchDownX, event.getRawY() - mTouchDownY,
172 | event.getRawX() - mTouchDownX);
173 | dispatchOnDragEvent(v, true, false, event.getRawX() - mTouchDownX, event.getRawY() - mTouchDownY);
174 | return true;
175 | }
176 | } else if (event.getAction() == MotionEvent.ACTION_UP) {
177 | mIsTouchUp = true;
178 | if (mVelocityTracker != null) {
179 | mVelocityTracker.computeCurrentVelocity(1000);
180 | velocityX = (int) mVelocityTracker.getXVelocity();
181 | velocityY = (int) mVelocityTracker.getYVelocity();
182 | }
183 | int velocity = (int) Math.sqrt(velocityX * velocityX + velocityY * velocityY);
184 | if (velocity > mMaxVelocityThreshold && event.getEventTime() - event.getDownTime() < 100) {
185 | ViewCompat.setTranslationZ(mRecyclerView, -1);
186 | return true;
187 | } else if (velocity >= mMinVelocityThreshold
188 | || event.getEventTime() - event.getDownTime() >= 100) {
189 | releaseCard(v, event.getRawX() - mTouchDownX, event.getRawY() - mTouchDownY, velocity);
190 | return true;
191 | } else
192 | ViewCompat.setTranslationZ(mRecyclerView, -1);
193 | }
194 | return false;
195 | }
196 |
197 | // hold the card just dragging as free as you can
198 | private void dragCard(View card, float offset_x, float offset_y, float touchX) {
199 | // trans
200 | card.setTranslationX(offset_x);
201 | card.setTranslationY(offset_y);
202 | // factor
203 | float distance = (float) Math.sqrt(offset_x * offset_x + offset_y * offset_y);
204 | float maxDistance = (float) Math.sqrt(mScreenWidth * mScreenWidth + mScreenHeight * mScreenHeight);
205 | float factor = Math.min(1, distance / maxDistance);
206 | // tansZ
207 | float ori_elevation = mRecyclerView.getVisibleCardCount() * mCardElevation;
208 | ViewCompat.setTranslationZ(card, (float) (ori_elevation * (1 + Math.sqrt(factor))));
209 | //scale
210 | card.setScaleX(1 - factor);
211 | card.setScaleY(1 - factor);
212 | // alpha
213 | card.setAlpha(1 - factor * factor);
214 | // rotate
215 | float rotateDegree = offset_x == 0 ? 0 : (float) Math.asin(touchX / mScreenWidth);
216 | rotateDegree = (float) (rotateDegree * 180 / Math.PI);
217 | // deg factor to make the rotate more smooth
218 | // rotateDegree = rotateDegree * factor;
219 | card.setRotation(rotateDegree);
220 | refreshOtherVisibleCardsPosition(offset_x, offset_y);
221 | }
222 |
223 | private void releaseCard(View card, float offset_x, float offset_y, int velocity) {
224 | // check card status to decide next action
225 | if (Math.abs(offset_x) >= mDragThresholdX
226 | || Math.abs(offset_y) >= mDragThresholdY
227 | || (velocity >= mMinVelocityThreshold && velocity <= mMaxVelocityThreshold)) {
228 | dropCard(card);
229 | } else {
230 | resetDragCard(card);
231 | }
232 | }
233 |
234 | // drop card without ontouch event drop from left if orientation is minus otherwise right
235 | @Override
236 | public void dropCardNoTouch(int orientation) {
237 | if (getChildCount() <= 0)
238 | return;
239 | ViewCompat.setTranslationZ(mRecyclerView, 1);
240 | final View card = getChildAt(getChildCount() - 1);
241 | orientation = orientation < 0 ? -1 : 1;
242 | ValueAnimator animator = ValueAnimator.ofFloat(0, 1.1f);
243 | final int finalOrientation = orientation;
244 | animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
245 | @Override
246 | public void onAnimationUpdate(ValueAnimator animation) {
247 | float offset = (float) animation.getAnimatedValue();
248 | dragCard(card, finalOrientation * mDragThresholdX * offset, mDragThresholdY * offset / 5,
249 | finalOrientation * mScreenWidth / 2 * offset);
250 | dispatchOnDragEvent(card, true, false, card.getTranslationX(), card.getTranslationY());
251 | }
252 | });
253 | animator.addListener(new AnimatorListenerAdapter() {
254 | @Override
255 | public void onAnimationEnd(Animator animation) {
256 | dropCard(card);
257 | }
258 | });
259 | animator.setDuration(150);
260 | animator.start();
261 | }
262 |
263 | // del the current card or recycle it
264 | private void dropCard(final View card) {
265 | final float oriTransX = card.getTranslationX();
266 | final float oriTransY = card.getTranslationY();
267 | final float oriRotateDeg = card.getRotation();
268 | final float oriScaleX = card.getScaleX();
269 | final float oriScaleY = card.getScaleY();
270 | final float oriAlpha = card.getAlpha();
271 |
272 | ValueAnimator animator = ValueAnimator.ofFloat(1, 0);
273 | animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
274 | @Override
275 | public void onAnimationUpdate(ValueAnimator animation) {
276 | float offset = (float) animation.getAnimatedValue();
277 | card.setTranslationX(3 * oriTransX - 2 * oriTransX * offset);
278 | card.setTranslationY(3 * oriTransY - 2 * oriTransY * offset);
279 | card.setRotation(3 * oriRotateDeg - 2 * oriRotateDeg * offset);
280 | card.setScaleX(oriScaleX * offset);
281 | card.setScaleY(oriScaleY * offset);
282 | card.setAlpha(oriAlpha * offset);
283 | refreshOtherVisibleCardsPosition(mDragThresholdX + (Math.abs(oriTransX) - mDragThresholdX) * offset,
284 | mDragThresholdY + (Math.abs(oriTransY) - mDragThresholdY) * offset);
285 | dispatchOnDragEvent(card, false, false, oriTransX, oriTransY);
286 | }
287 | });
288 | animator.addListener(new AnimatorListenerAdapter() {
289 | @Override
290 | public void onAnimationEnd(Animator animation) {
291 | if (null != mRecyclerView && null != mRecyclerView.getAdapter()) {
292 | mRecyclerView.dropCard();
293 | dispatchOnDragEvent(card, false, true, oriTransX, oriTransY);
294 | ViewCompat.setTranslationZ(mRecyclerView, -1);
295 | }
296 | }
297 | });
298 | animator.setDuration(300);
299 | animator.start();
300 | }
301 |
302 | // let the card go back to its ori position
303 | private void resetDragCard(final View card) {
304 | final float oriTransX = card.getTranslationX();
305 | final float oriTransY = card.getTranslationY();
306 | final float oriRotateDeg = card.getRotation();
307 | final float oriScaleX = card.getScaleX();
308 | final float oriScaleY = card.getScaleY();
309 | final float oriAlpha = card.getAlpha();
310 |
311 | final float oriTransZ = ViewCompat.getTranslationZ(card);
312 | final float targetTransZ = mRecyclerView.getVisibleCardCount() * mCardElevation;
313 |
314 | ValueAnimator animator = ValueAnimator.ofFloat(1, 0);
315 | animator.setInterpolator(new OvershootInterpolator());
316 | animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
317 | @Override
318 | public void onAnimationUpdate(ValueAnimator animation) {
319 | float offset = (float) animation.getAnimatedValue();
320 | card.setTranslationX(oriTransX * offset);
321 | card.setTranslationY(oriTransY * offset);
322 | ViewCompat.setTranslationZ(card, targetTransZ + (oriTransZ - targetTransZ) * offset);
323 | card.setRotation(oriRotateDeg * offset);
324 | card.setScaleX((oriScaleX - 1) * offset + 1);
325 | card.setScaleY((oriScaleY - 1) * offset + 1);
326 | card.setAlpha((oriAlpha - 1) * offset + 1);
327 | refreshOtherVisibleCardsPosition(oriTransX * offset, oriTransY * offset);
328 | dispatchOnDragEvent(card, false, false, oriTransX * offset, oriTransY * offset);
329 |
330 | }
331 | });
332 | animator.addListener(new AnimatorListenerAdapter() {
333 | @Override
334 | public void onAnimationEnd(Animator animation) {
335 | ViewCompat.setTranslationZ(mRecyclerView, -1);
336 | }
337 | });
338 | animator.setDuration(500);
339 | animator.start();
340 | }
341 |
342 | // refresh other visible cards' positions when dragging
343 | private void refreshOtherVisibleCardsPosition(float offset_x, float offset_y) {
344 | float factor = (float) (Math.sqrt(offset_x * offset_x + offset_y * offset_y)
345 | / Math.sqrt(mDragThresholdX * mDragThresholdX + mDragThresholdY * mDragThresholdY));
346 | factor = Math.min(factor, 1);
347 | if (getItemCount() > 1) {
348 | int cardOffset = mCardOffset;
349 | // count of all the attached cards
350 | int maxAttachChildrenCount = Math.min(mRecyclerView.getVisibleCardCount(), getItemCount() - 1);
351 | // count of all the cards required refreshing
352 | int totalRefreshingCount = Math.min(getItemCount() - 1, mRecyclerView.getVisibleCardCount());
353 | for (int i = 1; i <= totalRefreshingCount; i++) {
354 | int childPosition = maxAttachChildrenCount - i;
355 | // trans x y. if the visible cards count is three, for example,
356 | // here we only need to handle translation x and y for the other two visible cards at position 1 and 2
357 | if (i < totalRefreshingCount) {
358 | getChildAt(childPosition).setTranslationX(-cardOffset * factor);
359 | getChildAt(childPosition).setTranslationY(cardOffset * factor);
360 | }
361 |
362 | // it is different for handling transZ compared to transX Y.
363 | // we just need to handle more than one card.
364 |
365 | // calculate the current card ori elevation
366 | int current = mRecyclerView.getVisibleCardCount() - i;
367 | int oriElevation = mCardElevation * current;
368 | // update
369 | int currentElevation = (int) (oriElevation + mCardElevation * factor);
370 | ViewCompat.setTranslationZ(getChildAt(childPosition), currentElevation);
371 | }
372 | }
373 | }
374 |
375 | private void dispatchOnDragEvent(View view, boolean isDragging, boolean isDropped,
376 | float offsetX, float offsetY) {
377 | if (null != mListener) {
378 | mListener.onDraggingStateChanged(view, isDragging, isDropped, offsetX, offsetY);
379 | if (isDragging)
380 | mListener.onCardDragging(view, offsetX, offsetY);
381 | }
382 | }
383 | }
384 |
--------------------------------------------------------------------------------
/cardstackview/src/main/java/com/devilist/cardstackview/TowerCardManager.java:
--------------------------------------------------------------------------------
1 | /*
2 | * Copyright 2017 zengpu
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 |
18 | package com.devilist.cardstackview;
19 |
20 | import android.animation.Animator;
21 | import android.animation.AnimatorListenerAdapter;
22 | import android.animation.ValueAnimator;
23 | import android.content.Context;
24 | import android.graphics.Rect;
25 | import android.support.v4.view.ViewCompat;
26 | import android.support.v7.widget.RecyclerView;
27 | import android.view.MotionEvent;
28 | import android.view.VelocityTracker;
29 | import android.view.View;
30 | import android.view.ViewGroup;
31 | import android.view.animation.OvershootInterpolator;
32 |
33 |
34 | /**
35 | *
36 | * Created by zengp on 2017/11/19.
37 | */
38 |
39 | public class TowerCardManager extends CardManager {
40 |
41 | private float mTouchDownX = 0;
42 | private float mTouchDownY = 0;
43 | private boolean mIsTouchUp = false;
44 | // the dragged border position to differentiate whether the dragged card be drop or reset
45 | private float mDragThresholdX, mDragThresholdY;
46 | private int mMinVelocityThreshold = 2000;
47 | private int mMaxVelocityThreshold = 4500;
48 |
49 | private VelocityTracker mVelocityTracker = null;
50 |
51 | private int mCardOffset = 10;
52 | private int mCardElevation = 10;
53 |
54 | public TowerCardManager(Context context, CardRecyclerView recyclerView) {
55 | super(context, recyclerView);
56 | // forbidden the default item animator
57 | // ((DefaultItemAnimator) mRecyclerView.getItemAnimator()).setSupportsChangeAnimations(false);
58 | mRecyclerView.setItemAnimator(null);
59 | mDragThresholdX = mScreenWidth / 3;
60 | mDragThresholdY = mScreenHeight / 3;
61 | ViewCompat.setTranslationZ(mRecyclerView, -1);
62 | }
63 |
64 | public void setCardOffset(int cardOffset) {
65 | if (cardOffset < 0)
66 | throw new IllegalArgumentException("cardOffset must be over zero !!!");
67 | this.mCardOffset = cardOffset;
68 | }
69 |
70 | public void setCardElevation(int cardElevation) {
71 | if (cardElevation < 0)
72 | throw new IllegalArgumentException("cardElevation must be over zero !!!");
73 | this.mCardElevation = cardElevation;
74 | }
75 |
76 |
77 | @Override
78 | public void onLayoutCards(RecyclerView.Recycler recycler, RecyclerView.State state) {
79 | onLayoutCards(recycler, state, mRecyclerView.getVisibleCardCount(), mCardOffset, mCardElevation);
80 | setTargetDragCard();
81 | }
82 |
83 | private void onLayoutCards(RecyclerView.Recycler recycler, RecyclerView.State state,
84 | int visibleCardCount, int cardOffset, int cardElevation) {
85 | if (getItemCount() > 0) {
86 | // calculate the validate areas that all the visible cards cover.
87 | int left = 0;
88 | int top = 0;
89 | int maxAttachChildrenCount = Math.min(mRecyclerView.getVisibleCardCount(), getItemCount() - 1);
90 | for (int i = maxAttachChildrenCount; i >= 0; i--) {
91 | View child_i = recycler.getViewForPosition(i);
92 | addView(child_i);
93 | measureChildWithMargins(child_i, 0, 0);
94 | int childWidth = getDecoratedMeasuredWidth(child_i);
95 | int childHeight = getDecoratedMeasuredHeight(child_i);
96 | if (i == maxAttachChildrenCount) {
97 | int childHeightWithTotalOffset = childHeight + cardOffset * (visibleCardCount - 1);
98 | int parentWExcludePadding = getWidth() - getPaddingLeft() - getPaddingRight();
99 | int parentHExcludePadding = getHeight() - getPaddingTop() - getPaddingBottom();
100 | ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) child_i.getLayoutParams();
101 | int childMarginHorizOffset = params.leftMargin - params.rightMargin;
102 | int childMarginVertOffset = params.topMargin - params.bottomMargin;
103 | left = (parentWExcludePadding - childWidth) / 2 + getPaddingLeft() + childMarginHorizOffset;
104 | top = (parentHExcludePadding - childHeightWithTotalOffset) / 2 + getPaddingTop() + childMarginVertOffset;
105 | }
106 | // remove decorator area
107 | Rect childRect = new Rect();
108 | calculateItemDecorationsForChild(child_i, childRect);
109 | int top_i;
110 | float scaleX = (childWidth - i * cardOffset * 2) * 1f / childWidth;
111 | float scaleY = (childHeight - i * cardOffset * 2) * 1f / childHeight;
112 | float transZ = cardElevation * (visibleCardCount - i);
113 | if (i <= visibleCardCount - 1) {
114 | top_i = top + cardOffset * i * 2;
115 | } else {
116 | top_i = top + cardOffset * (visibleCardCount - 1) * 2;
117 | }
118 | child_i.setScaleX(scaleX);
119 | child_i.setScaleY(scaleY);
120 | // set elevations for all the visible children
121 | ViewCompat.setTranslationZ(child_i, transZ);
122 |
123 | // reset card
124 | child_i.setTranslationY(0);
125 | child_i.setTranslationX(0);
126 | child_i.setAlpha(1f);
127 | child_i.setRotation(0);
128 |
129 | layoutDecorated(child_i, left, top_i, left + childWidth, top_i + childHeight);
130 | }
131 | }
132 | }
133 |
134 | private void setTargetDragCard() {
135 | // count of all the attached cards
136 | int maxAttachChildrenCount = Math.min(mRecyclerView.getVisibleCardCount(), getItemCount() - 1);
137 | if (maxAttachChildrenCount >= 0) {
138 | for (int i = 0; i <= maxAttachChildrenCount; i++) {
139 | getChildAt(i).setOnTouchListener(this);
140 | if (i == maxAttachChildrenCount) {
141 | dispatchOnDragEvent(getChildAt(i), false, false, 0, 0);
142 | }
143 | }
144 | }
145 | }
146 |
147 | @Override
148 | public boolean onTouch(View v, MotionEvent event) {
149 | int maxAttachChildrenCount = Math.min(mRecyclerView.getVisibleCardCount(), getItemCount() - 1);
150 | if (v != getChildAt(maxAttachChildrenCount))
151 | return true;
152 | if (mVelocityTracker == null) {
153 | mVelocityTracker = VelocityTracker.obtain();
154 | }
155 | mVelocityTracker.addMovement(event);
156 | int velocityX = 0;
157 | int velocityY = 0;
158 | if (event.getAction() == MotionEvent.ACTION_DOWN) {
159 | ViewCompat.setTranslationZ(mRecyclerView, 1);
160 | mTouchDownX = event.getRawX();
161 | mTouchDownY = event.getRawY();
162 | mIsTouchUp = false;
163 | } else if (event.getAction() == MotionEvent.ACTION_MOVE) {
164 | if (mIsTouchUp) {
165 | mTouchDownX = event.getRawX();
166 | mTouchDownY = event.getRawY();
167 | mIsTouchUp = false;
168 | }
169 | ViewCompat.setTranslationZ(mRecyclerView, 1);
170 | if (event.getEventTime() - event.getDownTime() >= 100) {
171 | dragCard(v, event.getRawX() - mTouchDownX, event.getRawY() - mTouchDownY,
172 | event.getRawX() - mTouchDownX);
173 | dispatchOnDragEvent(v, true, false, event.getRawX() - mTouchDownX, event.getRawY() - mTouchDownY);
174 | return true;
175 | }
176 | } else if (event.getAction() == MotionEvent.ACTION_UP) {
177 | mIsTouchUp = true;
178 | if (mVelocityTracker != null) {
179 | mVelocityTracker.computeCurrentVelocity(1000);
180 | velocityX = (int) mVelocityTracker.getXVelocity();
181 | velocityY = (int) mVelocityTracker.getYVelocity();
182 | }
183 | int velocity = (int) Math.sqrt(velocityX * velocityX + velocityY * velocityY);
184 | if (velocity > mMaxVelocityThreshold && event.getEventTime() - event.getDownTime() < 100) {
185 | ViewCompat.setTranslationZ(mRecyclerView, -1);
186 | return true;
187 | } else if (velocity >= mMinVelocityThreshold
188 | || event.getEventTime() - event.getDownTime() >= 100) {
189 | releaseCard(v, event.getRawX() - mTouchDownX, event.getRawY() - mTouchDownY, velocity);
190 | return true;
191 | } else
192 | ViewCompat.setTranslationZ(mRecyclerView, -1);
193 | }
194 | return false;
195 | }
196 |
197 | // hold the card just dragging as free as you can
198 | private void dragCard(View card, float offset_x, float offset_y, float touchX) {
199 | // trans
200 | card.setTranslationX(offset_x);
201 | card.setTranslationY(offset_y);
202 | // factor
203 | float distance = (float) Math.sqrt(offset_x * offset_x + offset_y * offset_y);
204 | float maxDistance = (float) Math.sqrt(mScreenWidth * mScreenWidth + mScreenHeight * mScreenHeight);
205 | float factor = Math.min(1, distance / maxDistance);
206 | // tansZ
207 | float ori_elevation = mRecyclerView.getVisibleCardCount() * mCardElevation;
208 | ViewCompat.setTranslationZ(card, (float) (ori_elevation * (1 + Math.sqrt(factor))));
209 | //scale
210 | card.setScaleX(1 - factor);
211 | card.setScaleY(1 - factor);
212 | // alpha
213 | card.setAlpha(1 - factor * factor);
214 | // rotate
215 | float rotateDegree = offset_x == 0 ? 0 : (float) Math.asin(touchX / mScreenWidth);
216 | rotateDegree = (float) (rotateDegree * 180 / Math.PI);
217 | // deg factor to make the rotate more smooth
218 | // rotateDegree = rotateDegree * factor;
219 | card.setRotation(rotateDegree);
220 | refreshOtherVisibleCardsPosition(offset_x, offset_y);
221 | }
222 |
223 | private void releaseCard(View card, float offset_x, float offset_y, int velocity) {
224 | // check card status to decide next action
225 | if (Math.abs(offset_x) >= mDragThresholdX
226 | || Math.abs(offset_y) >= mDragThresholdY
227 | || (velocity >= mMinVelocityThreshold && velocity <= mMaxVelocityThreshold)) {
228 | dropCard(card);
229 | } else {
230 | resetDragCard(card);
231 | }
232 | }
233 |
234 | // drop card without ontouch event drop from left if orientation is minus otherwise right
235 | @Override
236 | public void dropCardNoTouch(int orientation) {
237 | if (getChildCount() <= 0)
238 | return;
239 | ViewCompat.setTranslationZ(mRecyclerView, 1);
240 | final View card = getChildAt(getChildCount() - 1);
241 | orientation = orientation < 0 ? -1 : 1;
242 | ValueAnimator animator = ValueAnimator.ofFloat(0, 1.1f);
243 | final int finalOrientation = orientation;
244 | animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
245 | @Override
246 | public void onAnimationUpdate(ValueAnimator animation) {
247 | float offset = (float) animation.getAnimatedValue();
248 | dragCard(card, finalOrientation * mDragThresholdX * offset, mDragThresholdY * offset / 5,
249 | finalOrientation * mScreenWidth / 2 * offset);
250 | dispatchOnDragEvent(card, true, false, card.getTranslationX(), card.getTranslationY());
251 | }
252 | });
253 | animator.addListener(new AnimatorListenerAdapter() {
254 | @Override
255 | public void onAnimationEnd(Animator animation) {
256 | dropCard(card);
257 | }
258 | });
259 | animator.setDuration(150);
260 | animator.start();
261 | }
262 |
263 | // del the current card or recycle it
264 | private void dropCard(final View card) {
265 | final float oriTransX = card.getTranslationX();
266 | final float oriTransY = card.getTranslationY();
267 | final float oriRotateDeg = card.getRotation();
268 | final float oriScaleX = card.getScaleX();
269 | final float oriScaleY = card.getScaleY();
270 | final float oriAlpha = card.getAlpha();
271 |
272 | ValueAnimator animator = ValueAnimator.ofFloat(1, 0);
273 | animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
274 | @Override
275 | public void onAnimationUpdate(ValueAnimator animation) {
276 | float offset = (float) animation.getAnimatedValue();
277 | card.setTranslationX(3 * oriTransX - 2 * oriTransX * offset);
278 | card.setTranslationY(3 * oriTransY - 2 * oriTransY * offset);
279 | card.setRotation(3 * oriRotateDeg - 2 * oriRotateDeg * offset);
280 | card.setScaleX(oriScaleX * offset);
281 | card.setScaleY(oriScaleY * offset);
282 | card.setAlpha(oriAlpha * offset);
283 | refreshOtherVisibleCardsPosition(mDragThresholdX + (Math.abs(oriTransX) - mDragThresholdX) * offset,
284 | mDragThresholdY + (Math.abs(oriTransY) - mDragThresholdY) * offset);
285 | dispatchOnDragEvent(card, false, false, oriTransX, oriTransY);
286 | }
287 | });
288 | animator.addListener(new AnimatorListenerAdapter() {
289 | @Override
290 | public void onAnimationEnd(Animator animation) {
291 | if (null != mRecyclerView && null != mRecyclerView.getAdapter()) {
292 | mRecyclerView.dropCard();
293 | dispatchOnDragEvent(card, false, true, oriTransX, oriTransY);
294 | ViewCompat.setTranslationZ(mRecyclerView, -1);
295 | }
296 | }
297 | });
298 | animator.setDuration(300);
299 | animator.start();
300 | }
301 |
302 | // let the card go back to its ori position
303 | private void resetDragCard(final View card) {
304 | final float oriTransX = card.getTranslationX();
305 | final float oriTransY = card.getTranslationY();
306 | final float oriRotateDeg = card.getRotation();
307 | final float oriScaleX = card.getScaleX();
308 | final float oriScaleY = card.getScaleY();
309 | final float oriAlpha = card.getAlpha();
310 |
311 | final float oriTransZ = ViewCompat.getTranslationZ(card);
312 | final float targetTransZ = mRecyclerView.getVisibleCardCount() * mCardElevation;
313 |
314 | ValueAnimator animator = ValueAnimator.ofFloat(1, 0);
315 | animator.setInterpolator(new OvershootInterpolator());
316 | animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
317 | @Override
318 | public void onAnimationUpdate(ValueAnimator animation) {
319 | float offset = (float) animation.getAnimatedValue();
320 | card.setTranslationX(oriTransX * offset);
321 | card.setTranslationY(oriTransY * offset);
322 | ViewCompat.setTranslationZ(card, targetTransZ + (oriTransZ - targetTransZ) * offset);
323 | card.setRotation(oriRotateDeg * offset);
324 | card.setScaleX((oriScaleX - 1) * offset + 1);
325 | card.setScaleY((oriScaleY - 1) * offset + 1);
326 | card.setAlpha((oriAlpha - 1) * offset + 1);
327 | refreshOtherVisibleCardsPosition(oriTransX * offset, oriTransY * offset);
328 | dispatchOnDragEvent(card, false, false, oriTransX * offset, oriTransY * offset);
329 |
330 | }
331 | });
332 | animator.addListener(new AnimatorListenerAdapter() {
333 | @Override
334 | public void onAnimationEnd(Animator animation) {
335 | ViewCompat.setTranslationZ(mRecyclerView, -1);
336 | }
337 | });
338 | animator.setDuration(500);
339 | animator.start();
340 | }
341 |
342 | // refresh other visible cards' positions when dragging
343 | private void refreshOtherVisibleCardsPosition(float offset_x, float offset_y) {
344 | float factor = (float) (Math.sqrt(offset_x * offset_x + offset_y * offset_y)
345 | / Math.sqrt(mDragThresholdX * mDragThresholdX + mDragThresholdY * mDragThresholdY));
346 | factor = Math.min(factor, 1);
347 | if (getItemCount() > 1) {
348 | int cardOffset = mCardOffset;
349 | // count of all the attached cards
350 | int maxAttachChildrenCount = Math.min(mRecyclerView.getVisibleCardCount(), getItemCount() - 1);
351 | // count of all the cards required refreshing
352 | int totalRefreshingCount = Math.min(getItemCount() - 1, mRecyclerView.getVisibleCardCount());
353 | for (int i = 1; i <= totalRefreshingCount; i++) {
354 | int childPosition = maxAttachChildrenCount - i;
355 | View child_i = getChildAt(childPosition);
356 | // transY
357 | if (i < mRecyclerView.getVisibleCardCount()) {
358 | child_i.setTranslationY(-2 * cardOffset * (float) Math.sqrt(factor));
359 | }
360 | // scale
361 | float scaleX_start = (child_i.getWidth() - i * cardOffset * 2) * 1f / child_i.getWidth();
362 | float scaleX_end = (child_i.getWidth() - (i - 1) * cardOffset * 2) * 1f / child_i.getWidth();
363 | float scaleY_start = (child_i.getHeight() - i * cardOffset * 2) * 1f / child_i.getHeight();
364 | float scaleY_end = (child_i.getHeight() - (i - 1) * cardOffset * 2) * 1f / child_i.getHeight();
365 | float currentScaleX = scaleX_start + (scaleX_end - scaleX_start) * (float) Math.sqrt(factor);
366 | float currentScaleY = scaleY_start + (scaleY_end - scaleY_start) * (float) Math.sqrt(factor);
367 | child_i.setScaleX(currentScaleX);
368 | child_i.setScaleY(currentScaleY);
369 |
370 | // calculate the current card ori elevation
371 | int current = mRecyclerView.getVisibleCardCount() - i;
372 | int oriElevation = mCardElevation * current;
373 | int currentElevation = (int) (oriElevation + mCardElevation * (float) Math.sqrt(factor));
374 | // update transZ
375 | ViewCompat.setTranslationZ(child_i, currentElevation);
376 | }
377 | }
378 | }
379 |
380 | private void dispatchOnDragEvent(View view, boolean isDragging, boolean isDropped,
381 | float offsetX, float offsetY) {
382 | if (null != mListener) {
383 | mListener.onDraggingStateChanged(view, isDragging, isDropped, offsetX, offsetY);
384 | if (isDragging)
385 | mListener.onCardDragging(view, offsetX, offsetY);
386 | }
387 | }
388 | }
389 |
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/cardstackview/src/main/res/values/strings.xml:
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1 |
2 | CardStackView
3 |
4 |
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/cardstackview/src/test/java/com/devilist/cardstackview/ExampleUnitTest.java:
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1 | package com.devilist.cardstackview;
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 | }
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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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/images/image.gif:
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https://raw.githubusercontent.com/devilist/RecyclerCardStackView/45a4238c8705d1de3293e631918fe68a1b1467ef/images/image.gif
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/settings.gradle:
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1 | include ':app', ':cardstackview'
2 |
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