Fixed
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il...@google.com
I attach a project to reproduce the issue.
There are 2 buttons: one add a named fragment transaction (which you can remove with back) and the other navigate to another fragment using nav graph.
There are 2 buttons: one add a named fragment transaction (which you can remove with back) and the other navigate to another fragment using nav graph.
ap...@google.com
You should be using childFragmentManager, not requireFragmentManager(). As of Alpha 04 and https://issuetracker.google.com/issues/111345778 , back button presses are automatically passed to the child FragmentManager of the active Fragment, allowing you to do whatever FragmentTransactions you want in that child FragmentManager (using Navigation or not).
We can improve the error message though.
We can improve the error message though.
il...@google.com
Ah, of course I should....
shame on me.
Improving the error message will surely help fools like me :) thanks
shame on me.
Improving the error message will surely help fools like me :) thanks
Description
Version used: 1.0.0-alpha11
Devices/Android versions reproduced on: irrelevant
<activity <== ACTIVITY AS DESTINATION
android:id="@+id/NewsDetailActivity"
android:name="co.bstorm.navtest.ui.news.newsdetail.NewsDetailActivity"
android:label="activity"
tools:layout="@layout/activity_news_detail">
<argument
android:name="model"
app:argType="co.bstorm.navtest.model.CustomModel[]" /> <== ARRAY OF PARCELABLES AS ARGTYPE
</activity>
When I use Activity as a destination, and have an argument argType as array of Parcelable custom model class, library crashes on destination inside safeArgs generated code when trying to extract the Parcelable array from Bundle:
2019-02-06 13:49:18.523 25348-25348/co.bstorm.navtest E/AndroidRuntime: FATAL EXCEPTION: main
Process: co.bstorm.navtest, PID: 25348
java.lang.RuntimeException: Unable to start activity ComponentInfo{co.bstorm.navtest/co.bstorm.navtest.ui.news.newsdetail.NewsDetailActivity}: java.lang.ClassCastException: android.os.Parcelable[] cannot be cast to co.bstorm.navtest.model.CustomModel[]
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2793)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2864)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1567)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:156)
at android.app.ActivityThread.main(ActivityThread.java:6523)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:942)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:832)
Caused by: java.lang.ClassCastException: android.os.Parcelable[] cannot be cast to co.bstorm.navtest.model.CustomModel[]
at co.bstorm.navtest.ui.news.newsdetail.NewsDetailActivityArgs$Companion.fromBundle(NewsDetailActivityArgs.kt:25)
at co.bstorm.navtest.ui.news.newsdetail.NewsDetailActivity.onCreate(NewsDetailActivity.kt:13)
at android.app.Activity.performCreate(Activity.java:6915)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2746)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2864)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1567)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:156)
at android.app.ActivityThread.main(ActivityThread.java:6523)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:942)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:832)
The exact same setup works properly with the only difference being a Fragment as the destination, instead of activity, which once again flags this as definitely a library bug, and not something on my side.
Sample project:
Instructions:
1. Run app
2. Click on Settings in the upper right
3. App crashes when the destination Activity tries to un-bundle the parcelable array.
There is also a commented out action for the Fragment destination with the same setup which works properly.