Use AnimatorSet to chain animations

• Chaining animations in Java Code is verbose so we do that in xml
• Put your animation xml files in the res/animator folder
• Inflate your animation xml file
• Set a target to your animation like this: mFlipper.setTarget(mFlipImage);// In App1.4.2 , ObjectAnimator.ofFloat() did this for us implicitly
• Add an update listener to the correct ObjectAnimator //The animations are probably stored in some kind of container and you //retrieve them in the order they are stored in inside the flip.xml //animation file.

         ObjectAnimator flipAnimator = (ObjectAnimator) mFlipper.getChildAnimations().get(0);
         flipAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {...}

• Relevant files :
  • https://github.com/blikoon/Ubufundi/blob/master/App1.4.3/app/src/main/java/com/blikoon/App143/MainActivity.java
  • https://github.com/blikoon/Ubufundi/blob/master/App1.4.3/app/src/main/res/animator/flip.xml