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da...@gmail.com
1. Have you saw crash in real device or only in simulators?
2. Do you use dynamic feature for language ID?
il...@google.com
Tested on Android 12 Emulator with custom executor, but cannot repro this issue.
da...@gmail.com
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Second crash in the description is from a real device. Experienced it myself on two different Xiaomi phones, plus lots of crashes from users in the Google Play console.
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Dynamic features are not used in the application.
As a wild guess, I have downgraded build tools from 31.0.0 to 30.0.3, compileSdk from 31 to 30, and moved all work with Language ID to the service in a separate process (just to be sure that crash can kill secondary process instead of main). This combination is in beta for 2 days by now and I don't see any SIGSEGV crashes.
il...@google.com
il...@google.com
Hmm, I feel the crash might be something related to separate/secondary process.
I also changed compileSdk and targetSDK to 31 but still cannot repro this issue.
Description
Version used: 1.0.0-alpha05
Devices/Android versions reproduced on: Pixel 2 (Pie) / Emulator Nougat / Pie
I Stumbled on this stacktrace in a project that use the new navigation component:
java.lang.NumberFormatException: For input string: "TRANSACTION_NAME"
at java.lang.Integer.parseInt(Integer.java:615)
at java.lang.Integer.valueOf(Integer.java:801)
at androidx.navigation.fragment.FragmentNavigator.isBackStackEqual(FragmentNavigator.java:252)
at androidx.navigation.fragment.FragmentNavigator$1.onBackStackChanged(FragmentNavigator.java:83)
at androidx.fragment.app.FragmentManagerImpl.reportBackStackChanged(FragmentManager.java:2733)
at androidx.fragment.app.FragmentManagerImpl.executeOpsTogether(FragmentManager.java:2439)
at androidx.fragment.app.FragmentManagerImpl.removeRedundantOperationsAndExecute(FragmentManager.java:2372)
at androidx.fragment.app.FragmentManagerImpl.popBackStackImmediate(FragmentManager.java:884)
at androidx.fragment.app.FragmentManagerImpl.popBackStackImmediate(FragmentManager.java:827)
at androidx.fragment.app.FragmentManagerImpl.popBackStackImmediate(FragmentManager.java:874)
at androidx.fragment.app.FragmentManagerImpl.popBackStackImmediate(FragmentManager.java:827)
at androidx.fragment.app.FragmentActivity.onBackPressed(FragmentActivity.java:190)
at android.app.Activity.onKeyUp(Activity.java:3082)
In one of my fragment I manage an internal fragment transaction
requireFragmentManager().beginTransaction()
.addToBackStack("TRANSACTION_NAME")
.commit()
from the fragment doing this I navigate to another using the nav graph and when i press back that stack trace pop up and the app crashes.
If i use navController.navigateUp() nothing happens.
Looking in the code of FragmentNavigator I see
Integer.valueOf(mFragmentManager
.getBackStackEntryAt(fragmentBackStackIndex--)
.getName())
apparently you assume any back stack entry name is an integer.
Is this a design decision? Does that means I can't use fragment transactions on my own if I use the navigation component?
I honestly only use this to detect the user pressing back in my fragment without having to rely on the activity forwarding the information cause I have an overlay view on top of my fragment that is supposed to go away when the user press back and I don't have an `onBackPressed()` on the fragment.