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I want to go from a list view to the detail view and therefore, I use following OnClickListener in my list:
@Override public void onClick(View view) { Bet bet = (Bet)view.getTag(); FragmentManager fm = getActivity().getSupportFragmentManager(); BetDetailFragment f = BetDetailFragment.create(bet); String tag = f.getClass().getName(); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { setSharedElementReturnTransition(TransitionInflater.from(getActivity()).inflateTransition(android.R.transition.move)); f.setSharedElementEnterTransition(TransitionInflater.from(getActivity()).inflateTransition(android.R.transition.move)); } FragmentTransaction ft = fm.beginTransaction() .replace(R.id.frame_container, f, tag) .addToBackStack(tag); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { L.d(this, "TRANS: " + TransitionUtil.getTransitionNameBetLogo1(bet) + "|" + view.findViewById(R.id.ivLogo1)); L.d(this, "TRANS: " + TransitionUtil.getTransitionNameBetLogo2(bet) + "|" + view.findViewById(R.id.ivLogo2)); ft.addSharedElement(view.findViewById(R.id.ivLogo1), "1");//TransitionUtil.getTransitionNameBetLogo1(bet)); ft.addSharedElement(view.findViewById(R.id.ivLogo2), "2");//TransitionUtil.getTransitionNameBetLogo2(bet)); } ft.commit(); } My functions return unique names, I have two different views, but still it does not work. I already commented unnecessary functions out and wrote some unique transaction names in there by hand... But still, I get this exception, in the line of the first addSharedElement:
java.lang.IllegalArgumentException: Unique transitionNames are required for all sharedElements at android.support.v4.app.BackStackRecord.addSharedElement EDIT
Without the shared elements, everything is working perfectly fine...
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The Fragment API provides two ways to use motion effects and transformations to visually connect fragments during navigation. One of these is the Animation Framework, which uses both Animation and Animator . The other is the Transition Framework, which includes shared element transitions.
FragmentManager is the class responsible for performing actions on your app's fragments, such as adding, removing, or replacing them, and adding them to the back stack.
Use replace() to replace an existing fragment in a container with an instance of a new fragment class that you provide. Calling replace() is equivalent to calling remove() with a fragment in a container and adding a new fragment to that same container. transaction. commit();
The problem is, that addSharedElement does NOT set the transaction name of the view!
So in my example I would have to set it with following code:
ViewCompat.setTransitionName(view.findViewById(R.id.ivLogo1), "1"); ViewCompat.setTransitionName(view.findViewById(R.id.ivLogo2), "2"); BEFORE I add this views to the FragmentTransaction...
Afterwards following works just fine and as expected:
ft.addSharedElement(view.findViewById(R.id.ivLogo1), "1"); ft.addSharedElement(view.findViewById(R.id.ivLogo2), "2"); You must set the same transitionName in the xml layout element of each fragment. For example:
Fragment A:
<TextView android:id="@+id/my_text_view" ... android:transitionName="transtion_name_example"/> Fragment B:
<TextView android:id="@+id/my_text_view" ... android:transitionName="transtion_name_example"/> And the code will be something like this:
yourTransaction.addSharedElement(view, view.transactionName) If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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