Random exception while scrolling through photos

[mjholub]

Cause of error

Exception in thread "main" java.lang.IllegalStateException: Fragment already added: PreviewImageFragment{e0ecdb2} (e31d9a73-056a-435c-bd59-bbe617acebad id=0x7f0a01f5)
    at androidx.fragment.app.FragmentStore.addFragment(FragmentStore.java:92)
    at androidx.fragment.app.FragmentManager.addFragment(FragmentManager.java:1422)
    at androidx.fragment.app.BackStackRecord.executeOps(BackStackRecord.java:387)
    at androidx.fragment.app.FragmentManager.executeOps(FragmentManager.java:1906)
    at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:1814)
    at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1758)
    at androidx.fragment.app.FragmentManager.execSingleAction(FragmentManager.java:1670)
    at androidx.fragment.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:323)
    at androidx.fragment.app.FragmentStatePagerAdapter.finishUpdate(FragmentStatePagerAdapter.java:274)
    at androidx.viewpager.widget.ViewPager.populate(ViewPager.java:1244)
    at androidx.viewpager.widget.ViewPager.populate(ViewPager.java:1092)
    at androidx.viewpager.widget.ViewPager.onMeasure(ViewPager.java:1622)
    at android.view.View.measure(View.java:25466)
    at androidx.drawerlayout.widget.DrawerLayout.onMeasure(DrawerLayout.java:1156)
    at android.view.View.measure(View.java:25466)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6957)
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
    at androidx.appcompat.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:145)
    at android.view.View.measure(View.java:25466)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6957)
    at androidx.appcompat.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:496)
    at android.view.View.measure(View.java:25466)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6957)
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
    at android.view.View.measure(View.java:25466)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6957)
    at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1552)
    at android.widget.LinearLayout.measureVertical(LinearLayout.java:842)
    at android.widget.LinearLayout.onMeasure(LinearLayout.java:721)
    at android.view.View.measure(View.java:25466)
    at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6957)
    at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
    at com.android.internal.policy.DecorView.onMeasure(DecorView.java:747)
    at android.view.View.measure(View.java:25466)
    at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:3402)
    at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:2246)
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2504)
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1948)
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:8182)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1046)
    at android.view.Choreographer.doCallbacks(Choreographer.java:869)
    at android.view.Choreographer.doFrame(Choreographer.java:803)
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1031)
    at android.os.Handler.handleCallback(Handler.java:938)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:223)
    at android.app.ActivityThread.main(ActivityThread.java:7669)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:594)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)

App information

• ID: com.nextcloud.client
• Version: 30200190
• Build flavor: generic

Device information

• Brand: Xiaomi
• Device: vince
• Model: Redmi 5 Plus
• Id: RD2A.211001.002
• Product: lineage_vince

Firmware

• SDK: 30
• Release: 11
• Incremental: eng.krishs.20211107.123528

[AlvaroBrey]

Was this while scrolling up and down through the media view, or while swiping side to side in a picture preview?

[mjholub]

In the preview mode.

[mjholub]

Also, the photo for which the bug appeared also wasn't accessible through file picker (in Pixeldroid for example, there was just like an empty photo). It did however load into external apps through sharing menu.

[AlvaroBrey]

Also, the photo for which the bug appeared also wasn't accessible through file picker (in Pixeldroid for example, there was just like an empty photo). It did however load into external apps through sharing menu.

Oh, that sounds like it could be related to #9328. Can you check if you have an (invalid) folder in your storage? If so, delete it and those "empty" pictures should disappear

[mjholub]

No, neither in the root folder nor in the folder first affected by the issue.