imshyam/Play-Animation

Goolge Play App Animations

Play-Animation

This is an android app that covers most of existing animation in Goolge Play App and basic Material Animations. So lets start with the basics :

###Circular Reveal

This is easy one and explained at Android Developer Training Notes. For using this animation simply use this :

// previously invisible view
View myView = findViewById(R.id.my_view);

// get the center for the clipping circle
int cx = myView.getWidth() / 2;
int cy = myView.getHeight() / 2;

// get the final radius for the clipping circle
int finalRadius = Math.max(myView.getWidth(), myView.getHeight());

// create the animator for this view (the start radius is zero)
Animator anim =
    ViewAnimationUtils.createCircularReveal(myView, cx, cy, 0, finalRadius);

// make the view visible and start the animation
myView.setVisibility(View.VISIBLE);
anim.start();

Make sure that visibility of view is not set to gone, if visiblity is set to gone then animation will work fine except for the very firts time, as we can't get the radius of element which is not there initially.

View myView = findViewById(R.id.my_view);
if(myView.getVisibility() == View.VISIBLE){
// get the center for the clipping circle
int cx = myView.getWidth() / 2;
int cy = myView.getHeight() / 2;

// get the initial radius for the clipping circle

int initialRadius = myView.getWidth();

// create the animation (the final radius is zero)
int finalRadius = 0;
Animator anim = 
    ViewAnimationUtils.createCircularReveal(myView, cx, cy, initialRadius, finalRadius);

// make the view invisible when the animation is done
anim.addListener(new AnimatorListenerAdapter() {

@Override
public void onAnimationEnd(Animator animation) {
  super.onAnimationEnd(animation);
  myView.setVisibility(View.GONE);
}
});

anim.setDuration(1000);
// start the animation
anim.start();