Shared element activity transition on android 5

Question

I wanted to setup a shared element transition when going from one Activity to another.

The first Activity has a RecyclerView with items. When an item is clicked that it

Answer 1

I have faced the same issue, actually I used firebase and I have list of information and when user tap it will call detailActivity with sharedAnimation in this activity I was updating it as seen using firebase so firebase event updating the list item as seen, in this case this problem is invoking because recycler view that screen layout was getting effected.

and it invoke an exception because that transition id which one we have passed it was no more, so I solve this issue using this method.

onPause() I have frozen the layout and onResume() set it as false;

 @Override
public void onPause() {
    super.onPause();
    mRecycler.setLayoutFrozen(true);
}

@Override
public void onResume() {
    super.onResume();
    mRecycler.setLayoutFrozen(false);
}

And it's working.

Answer 2

I had this same error, mine was caused by the same reasoning behind hidro's answer but was caused by the keyboard hiding the shared element that the transition was going back to.

My workaround was to programmatically close the keyboard right before finishing the activity so the shared element on the previous activity isn't obscured.

View view = this.getCurrentFocus();
if (view != null) {  
    InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
    imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
supportFinishAfterTransition();

Answer 3

Try removing any merge xml tags that you might have on the final activity's view. I have noticed that transitioning to a view, that contains a merge tag, in which the transitioning element is a direct child of the merge tag, will cause this error, but should I replace the merge tag with a different container like CardView, the animation works just fine. Also make sure that there is a 1:1 relationship between the transitionNames in the views.

UPDATE: I experienced this issue once more when doing an activity transition, clicking the back button to return to the initial activity, and then trying the transition again. I was accessing the direct parent of the 'transition component', (A RelativeLayout) by id, with a findViewById() call, and then calling removeAllViews(). I ended up changing the code to call 'removeAllViews()' on a greater ancestor than the parent, also removed a tag from the element that was to take the place of the 'transition component' after page load. This alleviated my issue.

Answer 4

Be sure the "itemView" you are passing in the transition is the view clicked (received on your onClick() callback)

Answer 5

Make sure the View you are Transitioning to in the Second Activity is not the root layout. You can just wrap it in a FrameLayout with a transparent windowBackground.

Answer 6

I had this same issue, for me it was being caused by the recyclerview executing updates after/during the first exit transition. I think the shared element view was then sometimes getting recycled, meaning it would no longer be available for the transition animation, hence the crash (normally on the return transition but sometimes on the exit transition). I solved it by blocking updates if the activity is paused (used an isRunning flag) - note it was pausing but not stopping as it was still visible in the background. Additionally I blocked the update process if the transition was running. I found it enough to listen to this callback:

Transition sharedElementExitTransition = getWindow().getSharedElementExitTransition();
        if (sharedElementExitTransition != null) {
            sharedElementExitTransition.addListener(.....);
        }

As a final measure, although i'm not sure if this made a difference, I also did recyclerView.setLayoutFrozen(true) / recyclerView.setLayoutFrozen(false) in the onTransitionStart / onTransitionEnd.