can't start on Android 12

[mondlicht-und-sterne]

I tried to start File Manager, but it didn't work.

I could only install it.

Phone: Samsung S21 5G
OS: Android 12

[qokrb2t]

Same here. App does not start or pops up the 'app keeps stopping' message on lineageos 19.1

[HonestAbe7]

Yes, app crashed for me too on Android 10 on a cheap LG phone.

[benoit-tlr]

Here is the error log I got, hope it can help
I'm on A12.1
java.lang.NullPointerException: Attempt to get length of null array at com.cyb3rg0d.filemanager.ui.HomeUI.findFiles(HomeUI.java:173) at com.cyb3rg0d.filemanager.ui.HomeUI.findFiles(HomeUI.java:175) at com.cyb3rg0d.filemanager.ui.HomeUI.findFiles(HomeUI.java:175) at com.cyb3rg0d.filemanager.ui.HomeUI.filesDisplay(HomeUI.java:191) at com.cyb3rg0d.filemanager.ui.HomeUI.access$000(HomeUI.java:54) at com.cyb3rg0d.filemanager.ui.HomeUI$7.onPermissionsChecked(HomeUI.java:158) at com.karumi.dexter.DexterInstance$1.run(Unknown Source:43) at com.karumi.dexter.MainThread.execute(Unknown Source:6) at com.karumi.dexter.DexterInstance.checkMultiplePermissions(Unknown Source:71) at com.karumi.dexter.DexterInstance.checkPermissions(Unknown Source:0) at com.karumi.dexter.Dexter.check(Unknown Source:10) at com.cyb3rg0d.filemanager.ui.HomeUI.runtimePermission(HomeUI.java:165) at com.cyb3rg0d.filemanager.ui.HomeUI.onCreateView(HomeUI.java:147) at androidx.fragment.app.Fragment.performCreateView(Fragment.java:2963) at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:518) at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:282) at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2189) at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2100) at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2002) at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:3138) at androidx.fragment.app.FragmentManager.dispatchActivityCreated(FragmentManager.java:3072) at androidx.fragment.app.FragmentController.dispatchActivityCreated(FragmentController.java:251) at androidx.fragment.app.FragmentActivity.onStart(FragmentActivity.java:502) at androidx.appcompat.app.AppCompatActivity.onStart(AppCompatActivity.java:246) at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1473) at android.app.Activity.performStart(Activity.java:8082) at android.app.ActivityThread.handleStartActivity(ActivityThread.java:3732) at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:221) at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:201) at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:173) at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2253) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loopOnce(Looper.java:201) at android.os.Looper.loop(Looper.java:288) at android.app.ActivityThread.main(ActivityThread.java:7877) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1003)

[CYB3R-G0D]

Thank you for reporting this issue.
Android API level 29 and above made some changes in storage access.
Also this app crashes due to fileList returning null as there is an issue accessing storage.

I have fixed this issue now. But it still has some issues like /storage/emulate/0/Android file can't be opened, file operation / folder creation won't work in the main directory /storage/emulate/0/ so I'm working on this and will release a fixed version soon that supports API level 29+.

Check if this debug apk doesn't crash after opening (It only stops crashes and is for test purpose the above issues are applicable).
app-debug.zip

[benoit-tlr]

It starts fine on A12.1

[CYB3R-G0D]

@benoit-tlr Does it display recent files in home directory?

[benoit-tlr]

No it doesn't for me

[CYB3R-G0D]

Ok there must be array sorting problem there. Does the file operations (rename, delete ,create) working in the main directory for you?

[benoit-tlr]

I tested in /storage/emulated/0 and I can't create or delete folders, nor rename files

[CYB3R-G0D]

Android 12 doesn't allow the file operations in the root directory /storage/emulated/0 but it works inside a specific folder like Downloads, Documents. Also I guess it needs special permission to access the Android folder in root directory (it crashes if tried to open). I will work on it.

[benoit-tlr]

Indeed I can create & delete folders inside another folders. However I couldn't rename a file, when I click OK there's a toast that says "rename" but nothing happens.