DetailActivity.java

package com.naman14.playanimations;

import android.app.SharedElementCallback;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.ImageView;

import java.util.List;

/**
 * Created by naman on 29/05/15.
 */
public class DetailActivity extends ActionBarActivity {

    Toolbar toolbar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_detail);

        toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        getSupportActionBar().setDisplayShowTitleEnabled(false);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        setEnterSharedElementCallback(new SharedElementCallback() {
            @Override
            public View onCreateSnapshotView(Context context, Parcelable snapshot) {
                View view = new View(context);
                view.setBackground(new BitmapDrawable((Bitmap) snapshot));
                return view;
            }

            @Override
            public void onSharedElementStart(List<String> sharedElementNames,
                                             List<View> sharedElements,
                                             List<View> sharedElementSnapshots) {
                ImageView sharedElement = (ImageView) findViewById(R.id.cover);
                for (int i = 0; i < sharedElements.size(); i++) {
                    if (sharedElements.get(i) == sharedElement) {
                        View snapshot = sharedElementSnapshots.get(i);
                        Drawable snapshotDrawable = snapshot.getBackground();
                        sharedElement.setBackground(snapshotDrawable);
                        sharedElement.setImageAlpha(0);
                        forceSharedElementLayout();
                        break;
                    }
                }
            }

            private void forceSharedElementLayout() {
                ImageView sharedElement = (ImageView) findViewById(R.id.cover);
                int widthSpec = View.MeasureSpec.makeMeasureSpec(sharedElement.getWidth(),
                        View.MeasureSpec.EXACTLY);
                int heightSpec = View.MeasureSpec.makeMeasureSpec(sharedElement.getHeight(),
                        View.MeasureSpec.EXACTLY);
                int left = sharedElement.getLeft();
                int top = sharedElement.getTop();
                int right = sharedElement.getRight();
                int bottom = sharedElement.getBottom();
                sharedElement.measure(widthSpec, heightSpec);
                sharedElement.layout(left, top, right, bottom);
            }

            @Override
            public void onSharedElementEnd(List<String> sharedElementNames,
                                           List<View> sharedElements,
                                           List<View> sharedElementSnapshots) {
                ImageView sharedElement = (ImageView) findViewById(R.id.cover);
                sharedElement.setBackground(null);
                sharedElement.setImageAlpha(255);
            }
        });

    }
}