IssueTracker

Component used: Fragment
Version used: 1.2.4
Devices/Android versions reproduced on: N/A

If both the platform and AndroidX transitions are both used in a fragment transition you get this error:

    java.lang.IllegalArgumentException: Invalid Transition types
        at androidx.fragment.app.FragmentTransition.chooseImpl(FragmentTransition.java:521)
        at androidx.fragment.app.FragmentTransition.configureTransitionsReordered(FragmentTransition.java:240)
        at androidx.fragment.app.FragmentTransition.startTransitions(FragmentTransition.java:152)
        at androidx.fragment.app.FragmentManager.completeExecute(FragmentManager.java:2121)
        at androidx.fragment.app.FragmentManager$StartEnterTransitionListener.completeTransaction(FragmentManager.java:3022)
        at androidx.fragment.app.FragmentManager.executePostponedTransaction(FragmentManager.java:1895)
        at androidx.fragment.app.FragmentManager.ensureExecReady(FragmentManager.java:1803)
        at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:1843)
        at androidx.fragment.app.FragmentManager$4.run(FragmentManager.java:413)
        at android.os.Handler.handleCallback(Handler.java:873)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:6971)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:865)

It's not very helpful or tell you how to fix it.

It would be very useful if it listed the following:

• Which fragment has the problem
• Which transitions are conflicting
• What you should do to fix it

It's very easy to accidentally import the wrong transition by accident