Android Image not rotating after the 1st run using ViewPropertyAnimator

Question

• I have two ImageView(s) set in my layout one on top of the other, say A and B.
• I have set the alpha of B to 0 so it's totally faded as I want to control which image is displayed by setting the appropriate alpha to 1 in my code.
• Now I also want to rotate the Images by 360 degrees before they fade out and before the new image comes on the screen when I click on the ImageView(s).
• I'm using the ViewPropertyAnimator's rotation() and alpha() methods to do this.
• This works without any issues when the App is installed and runs for for 1st time.
• However, next time when I click on the Images, only the fade-in and fade-out animations work.
• The rotation does not work.

• Check this code :

  boolean isImage1Showing = true;
  
  //onClick() method for the 2 ImageView(s)
  public void fadeAndRotate(View view){         
  
  if (isImage1Showing){
  
      //Rotate the resource on 1st ImageView by 360 degrees
      imageViewA.animate().rotation(360f).setDuration(2000);
  
      imageViewA.animate().alpha(0).setDuration(2000);
  
      //Displaying the other image on to the screen
      imageViewB.animate().alpha(1).setDuration(2000);
  
      isImage1Showing = false;
  
      } else {
      isImage1Showing = true;
  
      imageViewB.animate().rotation(360f).setDuration(2000);
  
      //Displaying the previous image 
      imageViewA.animate().alpha(1).setDuration(2000);
  
      //fading out the currently displayed image
      imageViewB.animate().alpha(0).setDuration(2000);
  }
  

  }

Answer 1

Use the

.rotationBy(float value)

method instead of the

.rotation(float value)

method. In your case it rotates TO 360f but you want it to rotate BY 360f.

So this code should work :

imageViewA.animate().rotationBy(360f).setDuration(2000);