Flip image like a coin

We want an image move flip like a coin.

Declare two global variable.

boolean quay;

private ObjectAnimator mFlipper;

Import library, copy to below findViewByid.

final Bitmap a = BitmapFactory.decodeResource(getResources(), R.drawable.image);

final Bitmap b = BitmapFactory.decodeResource(getResources(), R.drawable.image);      

im.setImageBitmap(a);

quay = true;           

mFlipper = ObjectAnimator.ofFloat(im, "rotationX", 0f, 360f);

mFlipper.setDuration(500);

mFlipper.setInterpolator(new LinearInterpolator());

mFlipper.setRepeatCount(Animation.INFINITE);

mFlipper.addUpdateListener(new AnimatorUpdateListener() {

@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR1)

@SuppressLint("NewApi")

@Override

public void onAnimationUpdate(ValueAnimator animation) {

if (animation.getAnimatedFraction() >= 0.25f && quay) {

im.setImageBitmap(b);

quay = false;

}

if (animation.getAnimatedFraction() >= 0.75f && !quay) {

im.setImageBitmap(a);

quay = true;

                     }

                 }

             });

Put this line in any button.

mFlipper.start();

If you want it flip when click to image, copy this lines to above last bracket.

@Override

    public boolean onTouchEvent(MotionEvent event) {

        if(event.getAction() == MotionEvent.ACTION_DOWN) {

            mFlipper.start();

            return true;

        }

        return super.onTouchEvent(event);

    }

If you want it flip some time, edit line mFlipper.setRepeatCount(Animation.INFINITE);

If image has two face, change second bitmap to

final Bitmap b = BitmapFactory.decodeResource(getResources(), R.drawable.image2);