First pass at viewpager animations

.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 25
+    buildToolsVersion "24.0.3"
+    defaultConfig {
+        applicationId "com.nbau21.animatedvectorsample"
+        minSdkVersion 21
+        targetSdkVersion 25
+        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-v7:25.0.1'
+    compile 'com.android.support:support-v4:25.0.1'
+    compile 'com.android.support:design:25.0.1'
+    compile 'com.android.support:recyclerview-v7:25.0.1'
+    testCompile 'junit:junit:4.12'
+}

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/nbau21/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 *;
+#}

app/src/androidTest/java/com/nbau21/animatedvectorsample/ExampleInstrumentedTest.java

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+package com.nbau21.animatedvectorsample;
+
+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.nbau21.animatedvectorsample", 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.nbau21.animatedvectorsample">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:supportsRtl="true"
+        android:theme="@style/AppTheme">
+        <activity
+            android:name=".MainActivity"
+            android:label="@string/app_name"
+            android:theme="@style/AppTheme.NoActionBar">
+            <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/com/nbau21/animatedvectorsample/ItemListFragment.java

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+package com.nbau21.animatedvectorsample;
+
+import android.content.Context;
+import android.graphics.drawable.Animatable;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v7.widget.RecyclerView;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+
+import com.nbau21.animatedvectorsample.dummy.DummyContent;
+import com.nbau21.animatedvectorsample.dummy.DummyContent.DummyItem;
+
+public class ItemListFragment extends Fragment {
+
+    private OnListFragmentInteractionListener mListener;
+
+    public ItemListFragment() {
+    }
+
+    public static ItemListFragment newInstance() {
+        return new ItemListFragment();
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.fragment_item_list, container, false);
+
+        final RecyclerView recyclerView = (RecyclerView) view.findViewById(R.id.list);
+        final OverScrollLayoutManager layoutManager = new OverScrollLayoutManager(view.getContext());
+        final ImageView ivSue = (ImageView) view.findViewById(R.id.iv_sue);
+        ivSue.bringToFront();
+        ivSue.setPivotY(ivSue.getHeight());
+        ivSue.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                layoutManager.scrollToPositionWithOffset(0, 0);
+            }
+        });
+        layoutManager.setOverScrollDetector(new OverScrollLayoutManager.OverScrollDetector() {
+
+            @Override
+            public void bottomOverScrollDetected(int overscroll) {
+
+            }
+
+            @Override
+            public void topOverScrollDetected(int overscroll) {
+            }
+
+            @Override
+            public void noOverScrollDetected() {
+            }
+        });
+        recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
+            @Override
+            public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
+                if (newState == RecyclerView.SCROLL_STATE_DRAGGING) {
+                    ((Animatable) (ivSue.getDrawable())).start();
+                } else if (newState == RecyclerView.SCROLL_STATE_IDLE) {
+                    ((Animatable) (ivSue.getDrawable())).stop();
+                }
+                super.onScrollStateChanged(recyclerView, newState);
+            }
+        });
+        recyclerView.setLayoutManager(layoutManager);
+        recyclerView.setAdapter(new ItemRecyclerViewAdapter(DummyContent.ITEMS, mListener));
+        return view;
+    }
+
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+        if (context instanceof OnListFragmentInteractionListener) {
+            mListener = (OnListFragmentInteractionListener) context;
+        } else {
+            throw new RuntimeException(context.toString()
+                    + " must implement OnListFragmentInteractionListener");
+        }
+    }
+
+    @Override
+    public void onDetach() {
+        super.onDetach();
+        mListener = null;
+    }
+
+    public interface OnListFragmentInteractionListener {
+        void onListFragmentInteraction(DummyItem item);
+    }
+}