如何在活动的活动按下时覆盖共享元素的平滑过渡？

Question

I have started a details activity from a list activity and a couple of shared elements have been animated using ActivityCompat.startActivity() and obviously when the onBackPressed() of the activity is called the smooth transition is reversed.

But here in my case it creates a problem; the details activity utilizes swiping gestures to browse trough the listItems one by one; and when user is about to return, the smooth transition animates the wrong image and title and in the end the actual image and title of that row is replaced which doesn't creates a smooth transition at all.

I'm trying to use a replacement fadeIn\\fadeOut animation for activities when the onBackPressed() is called if the position differs the original clicked position, but calling super.onBackPressed() doesn't do the magic.

here's the method:

   @Override
public void onBackPressed() {
    if (originalPosition != positionInParentList) {
        overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
        return;
    }
    super.onBackPressed();
}

Answer 1

Replace the order of statements, Bring the super.onBackPressed(); above the if statement.

Answer 2

Try this:

@Override
public void onBackPressed() {
    super.onBackPressed();
    if (originalPositionInParentList == positionInParentList) {
        return;
    }
    overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
}