DetailActivity3.java

package com.marshalchen.common.demoofui.materialAnimations;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.os.Build;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.transition.Transition;
import android.view.View;
import android.view.ViewAnimationUtils;

import com.marshalchen.common.demoofui.R;

@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public class DetailActivity3 extends ActionBarActivity {

    private static final long ANIM_DURATION = 1000;
    private View bgViewGroup;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.material_animation_activity_details3);
        setupLayout();
        setupWindowAnimations();
    }

    private void setupLayout() {
        bgViewGroup = findViewById(R.id.backgroundViewGroup);
    }

    private void setupWindowAnimations() {
        setupEnterAnimations();
        setupExitAnimations();
    }

    private void setupEnterAnimations() {
        Transition enterTransition = getWindow().getSharedElementEnterTransition();
        enterTransition.addListener(new Transition.TransitionListener() {
            @Override
            public void onTransitionStart(Transition transition) {}

            @Override
            public void onTransitionEnd(Transition transition) {
                animateRevealShow(bgViewGroup);
            }

            @Override
            public void onTransitionCancel(Transition transition) {}

            @Override
            public void onTransitionPause(Transition transition) {}

            @Override
            public void onTransitionResume(Transition transition) {}
        });
    }

    private void setupExitAnimations() {
        Transition sharedElementReturnTransition = getWindow().getSharedElementReturnTransition();
        sharedElementReturnTransition.setStartDelay(ANIM_DURATION);


        Transition returnTransition = getWindow().getReturnTransition();
        returnTransition.setDuration(ANIM_DURATION);
        returnTransition.addListener(new Transition.TransitionListener() {
            @Override
            public void onTransitionStart(Transition transition) {
                animateRevealHide(bgViewGroup);
            }

            @Override
            public void onTransitionEnd(Transition transition) {}

            @Override
            public void onTransitionCancel(Transition transition) {}

            @Override
            public void onTransitionPause(Transition transition) {}

            @Override
            public void onTransitionResume(Transition transition) {}
        });
    }

    private void animateRevealShow(View viewRoot) {
        int cx = (viewRoot.getLeft() + viewRoot.getRight()) / 2;
        int cy = (viewRoot.getTop() + viewRoot.getBottom()) / 2;
        int finalRadius = Math.max(viewRoot.getWidth(), viewRoot.getHeight());

        Animator anim = ViewAnimationUtils.createCircularReveal(viewRoot, cx, cy, 0, finalRadius);
        viewRoot.setVisibility(View.VISIBLE);
        anim.setDuration(ANIM_DURATION);
        anim.start();
    }

    private void animateRevealHide(final View viewRoot) {
        int cx = (viewRoot.getLeft() + viewRoot.getRight()) / 2;
        int cy = (viewRoot.getTop() + viewRoot.getBottom()) / 2;
        int initialRadius = viewRoot.getWidth();

        Animator anim = ViewAnimationUtils.createCircularReveal(viewRoot, cx, cy, initialRadius, 0);
        anim.addListener(new AnimatorListenerAdapter() {
            @Override
            public void onAnimationEnd(Animator animation) {
                super.onAnimationEnd(animation);
                viewRoot.setVisibility(View.INVISIBLE);
            }
        });
        anim.setDuration(ANIM_DURATION);
        anim.start();
    }
}