code commit

.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
+    defaultConfig {
+        applicationId "gallery.demo.com.galleryview"
+        minSdkVersion 24
+        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'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+    implementation fileTree(include: ['*.jar'], dir: 'libs')
+    implementation 'com.android.support:appcompat-v7:26.1.0'
+    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'com.android.support.test:runner:1.0.1'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+    compile project(path: ':gallery')
+}

app/proguard-rules.pro

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+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# 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/gallery/demo/com/galleryview/ExampleInstrumentedTest.java

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+package gallery.demo.com.galleryview;
+
+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.*;
+
+/**
+ * Instrumented 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("gallery.demo.com.galleryview", 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="gallery.demo.com.galleryview">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
+
+    <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>
+    </application>
+
+</manifest>

app/src/main/java/gallery/demo/com/galleryview/MainActivity.java

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+package gallery.demo.com.galleryview;
+
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.view.Window;
+import android.widget.BaseAdapter;
+import android.widget.GridView;
+import android.widget.ImageView;
+
+import com.bumptech.glide.Glide;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import gallery.demo.com.gallery.model.GalleryPhotoModel;
+import gallery.demo.com.gallery.view.GalleryView;
+
+public class MainActivity extends AppCompatActivity {
+
+
+    private GridView urlTypeGridView, drawableTypeGridView;
+    private GalleryView photoGalleryView;
+    private LayoutInflater inflater;
+
+    private List<GalleryPhotoModel> urlList = new ArrayList<>();
+    private List<GalleryPhotoModel> resourceList = new ArrayList<>();
+
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
+        setContentView(R.layout.photo_gallery_activity_main);
+        initData();
+        initView();
+    }
+
+    private void initData() {
+        inflater = LayoutInflater.from(this);
+        urlList.add(new GalleryPhotoModel("http://img0.imgtn.bdimg.com/it/u=2715862021,3180817113&fm=27&gp=0.jpg"));
+        urlList.add(new GalleryPhotoModel("http://img4.imgtn.bdimg.com/it/u=1121460335,1804591133&fm=27&gp=0.jpg"));
+        urlList.add(new GalleryPhotoModel("http://img5.imgtn.bdimg.com/it/u=3926003122,1701882005&fm=27&gp=0.jpg"));
+        urlList.add(new GalleryPhotoModel("http://img2.imgtn.bdimg.com/it/u=2956928272,541387468&fm=27&gp=0.jpg"));
+        urlList.add(new GalleryPhotoModel("http://img3.imgtn.bdimg.com/it/u=3524652925,4234956354&fm=27&gp=0.jpg"));
+        urlList.add(new GalleryPhotoModel("https://imgs.genshuixue.com/49509748_tkiz8i0z.jpeg"));
+
+        resourceList.add(new GalleryPhotoModel("https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1521717658692&di=8897bcf879d0da55db484e293a44ca12&imgtype=0&src=http%3A%2F%2Fimg.redocn.com%2Fsheji%2F20140924%2Fliushiwuzhounianguoqingshuxingzhanban_3128211.jpg"));
+        resourceList.add(new GalleryPhotoModel(R.drawable.emoji_cry));
+        resourceList.add(new GalleryPhotoModel(R.drawable.emoji_doubt));
+        resourceList.add(new GalleryPhotoModel(R.drawable.emoji_giggle));
+        resourceList.add(new GalleryPhotoModel(R.drawable.emoji_heartstopper));
+        resourceList.add(new GalleryPhotoModel(R.drawable.emoji_heartstopper_n));
+    }
+
+
+    private void initView() {
+        photoGalleryView = (GalleryView) findViewById(R.id.photo_gallery_view);
+        urlTypeGridView = (GridView) findViewById(R.id.url_type_gridView);
+        drawableTypeGridView = (GridView) findViewById(R.id.drawabl_type_gridView);
+        urlTypeGridView.setAdapter(new BaseAdapter() {
+            @Override
+            public int getCount() {
+                return urlList.size();
+            }
+
+            @Override
+            public Object getItem(int position) {
+                return urlList.get(position);
+            }
+
+            @Override
+            public long getItemId(int position) {
+                return position;
+            }
+
+            @Override
+            public View getView(final int position, View convertView, ViewGroup viewGroup) {
+                ViewHoder viewHoder = null;
+                if (convertView == null) {
+                    convertView = inflater.inflate(R.layout.photo_gallery_item_photo_show, null);
+                    viewHoder = new ViewHoder();
+                    viewHoder.imageView = (ImageView) convertView.findViewById(R.id.item_photo);
+                    convertView.setTag(viewHoder);
+                } else {
+                    viewHoder = (ViewHoder) convertView.getTag();
+                }
+                Glide.with(MainActivity.this).load(urlList.get(position).photoSource).into(viewHoder.imageView);
+                final ViewHoder finalViewHoder = viewHoder;
+                viewHoder.imageView.setOnClickListener(new View.OnClickListener() {
+                    @Override
+                    public void onClick(View view) {
+                        photoGalleryView.showPhotoGallery(position, urlList, finalViewHoder.imageView);
+                    }
+                });
+
+                return convertView;
+            }
+        });
+        drawableTypeGridView.setAdapter(new BaseAdapter() {
+            @Override
+            public int getCount() {
+                return resourceList.size();
+            }
+
+            @Override
+            public Object getItem(int i) {
+                return resourceList.get(i);
+            }
+
+            @Override
+            public long getItemId(int i) {
+                return i;
+            }
+
+            @Override
+            public View getView(final int position, View convertView, ViewGroup viewGroup) {
+                ViewHoder viewHoder = null;
+                if (convertView == null) {
+                    convertView = inflater.inflate(R.layout.photo_gallery_item_photo_show, null);
+                    viewHoder = new ViewHoder();
+                    viewHoder.imageView = (ImageView) convertView.findViewById(R.id.item_photo);
+                    convertView.setTag(viewHoder);
+                } else {
+                    viewHoder = (ViewHoder) convertView.getTag();
+                }
+                Glide.with(MainActivity.this).load(resourceList.get(position).photoSource).into(viewHoder.imageView);
+                final ViewHoder finalViewHoder = viewHoder;
+                viewHoder.imageView.setOnClickListener(new View.OnClickListener() {
+                    @Override
+                    public void onClick(View view) {
+                        photoGalleryView.showPhotoGallery(position, resourceList, finalViewHoder.imageView);
+                    }
+                });
+
+                return convertView;
+            }
+        });
+    }
+
+    class ViewHoder {
+        private ImageView imageView;
+    }
+
+}