Use ObjectAnimator to animate a View

• ObjectAnimator is more robust in that it not only animates Views but Also other objects.It also allows you to have updates on the progress of the animation
• This example gives a basic template you can use as a starting point for more complex animations.
• More in depth details here : https://developer.android.com/guide/topics/graphics/prop-animation.html#property-vs-view
• Quick Code:

	@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mHeadsImage = BitmapFactory.decodeResource(getResources(), R.drawable.heads);
        mTailsImage = BitmapFactory.decodeResource(getResources(), R.drawable.tails);
        mFlipImage = (ImageView)findViewById(R.id.flip_image);
        mFlipImage.setImageBitmap(mHeadsImage);
        mIsHeads = true;

        mFlipper = ObjectAnimator.ofFloat(mFlipImage, "rotationY", 0f, 360f);

        mFlipper.setDuration(500);
        mFlipper.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
            @Override
            public void onAnimationUpdate(ValueAnimator animation) {
                if (animation.getAnimatedFraction() >= 0.25f && mIsHeads) {
                    mFlipImage.setImageBitmap(mTailsImage);
                    mIsHeads = false;
                }
                if (animation.getAnimatedFraction() >= 0.75f && !mIsHeads) {
                    mFlipImage.setImageBitmap(mHeadsImage);
                    mIsHeads = true;
                }
            }
        });
    }

• Relevant files :
  • https://github.com/blikoon/Ubufundi/blob/master/App1.4.2/app/src/main/java/com/blikoon/app142/MainActivity.java