git init

.gitignore

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+*.iml
+.gradle
+/local.properties
+/.idea/workspace.xml
+/.idea/libraries
+.DS_Store
+/build
+/captures
+.externalNativeBuild

app/.gitignore

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+/build

app/build.gradle

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+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion 26
+    buildToolsVersion "26.0.0"
+    defaultConfig {
+        applicationId "com.test.dragclosedemo"
+        minSdkVersion 21
+        targetSdkVersion 26
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+    compile 'com.android.support:appcompat-v7:26.+'
+    compile 'com.android.support.constraint:constraint-layout:1.0.2'
+    testCompile 'junit:junit:4.12'
+
+    compile 'com.nineoldandroids:library:2.4.0'
+    compile 'com.github.bumptech.glide:glide:3.7.0'
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /Users/Alien/Library/Android/sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

app/src/androidTest/java/com/test/dragclosedemo/ExampleInstrumentedTest.java

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+package com.test.dragclosedemo;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumentation test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("com.test.dragclosedemo", appContext.getPackageName());
+    }
+}

app/src/main/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.test.dragclosedemo">
+
+
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+        <activity android:name=".PhotoBrowseActivity" android:theme="@style/FullScreenStyle"/>
+    </application>
+
+</manifest>

app/src/main/java/com/test/dragclosedemo/MainActivity.java

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+package com.test.dragclosedemo;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.support.v4.app.ActivityCompat;
+import android.support.v4.app.SharedElementCallback;
+import android.support.v7.app.AppCompatActivity;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+
+import com.bumptech.glide.Glide;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+
+public class MainActivity extends AppCompatActivity {
+
+    //图片随便找的，加载不出来可以换别的
+    public static final String[] images = new String[]{
+            "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1503684240091&di=a9d641f8424c561d6b5b6051c3b164f5&imgtype=0&src=http%3A%2F%2Ff.hiphotos.baidu.com%2Fzhidao%2Fpic%2Fitem%2Fd009b3de9c82d158d14de70c800a19d8bd3e42bb.jpg",
+            "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1503684322968&di=adad2ba7aaeb3c70cf8233a99b5c07ad&imgtype=jpg&src=http%3A%2F%2Fimg2.imgtn.bdimg.com%2Fit%2Fu%3D1312683452%2C3087431303%26fm%3D214%26gp%3D0.jpg"
+    };
+    private Bundle mReenterState;
+    ViewGroup parent;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        final ArrayList<String> pictureList = new ArrayList<>();
+        pictureList.addAll(Arrays.asList(images));
+
+        parent = (ViewGroup) findViewById(R.id.container);
+        int cnt = Math.min(images.length, parent.getChildCount());
+        for (int i = 0; i < cnt; i++) {
+            final ImageView imageView = (ImageView) parent.getChildAt(i);
+            Glide.with(this).load(images[i]).into(imageView);
+            final int index = i;
+            imageView.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View view) {
+                    PhotoBrowseActivity.startWithElement(MainActivity.this, pictureList, index, imageView);
+                }
+            });
+
+        }
+
+        setSharedElementCallback(this);
+    }
+
+
+
+    /**
+     * 接管Activity的setExitSharedElementCallback
+     * @param activity
+     */
+    public void setSharedElementCallback(Activity activity){
+        ActivityCompat.setExitSharedElementCallback(activity, new SharedElementCallback() {
+            @Override
+            public void onMapSharedElements(List<String> names, Map<String, View> sharedElements) {
+                if (mReenterState!=null){
+                    int index = mReenterState.getInt("index",0);
+                    sharedElements.clear();
+                    sharedElements.put("tansition_view",parent.getChildAt(index));
+                    mReenterState = null;
+                }
+            }
+        });
+
+    }
+    @Override
+    public void onActivityReenter(int resultCode, Intent data) {
+        super.onActivityReenter(resultCode, data);
+        mReenterState = new Bundle(data.getExtras());
+    }
+}