Skip to content

Crash on Sync Changes to a Shared Folder #17188

Closed
Closed
Crash on Sync Changes to a Shared Folder#17188
Labels
0. Needs triagebug

Description

@quantology
quantology
opened on Jun 15, 2026

⚠️ Before posting ⚠️

  • This is a bug, not a question or an enhancement.
  • I've searched for similar issues and didn't find a duplicate.
  • I've written a clear and descriptive title for this issue, not just "Bug" or "Crash".
  • I agree to follow Nextcloud's Code of Conduct.

Steps to reproduce

  1. Another user on my instance shared a folder with me, with edit and sync permissions
  2. I selected "sync" in the nextcloud app on my device, causing the data to be mirrored in my /Android/media/(nextcloud)/(account)/ folder
  3. I created a new folder and new files in that folder
  4. I navigated to the synced folder in the app

Expected behaviour

I expected to see my new folder & files

Actual behaviour

A fullscrean error modal appeared with the following message:

Cause of error

Exception in thread "main" java.lang.UnsupportedOperationException
    at java.util.AbstractList.add(AbstractList.java:155)
    at java.util.AbstractList.add(AbstractList.java:113)
    at com.owncloud.android.ui.adapter.OCFileListAdapter.bindListItemViewHolder(OCFileListAdapter.java:610)
    at com.owncloud.android.ui.adapter.OCFileListAdapter.bindHolder(OCFileListAdapter.java:502)
    at com.owncloud.android.ui.adapter.OCFileListAdapter.onBindViewHolder(OCFileListAdapter.java:490)
    at androidx.recyclerview.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:7747)
    at com.owncloud.android.ui.adapter.OCFileListAdapter.onBindViewHolder(OCFileListAdapter.java:1089)
    at androidx.recyclerview.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:7847)
    at androidx.recyclerview.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:6646)
    at androidx.recyclerview.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:6917)
    at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:6757)
    at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:6753)
    at androidx.recyclerview.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2362)
    at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1662)
    at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1622)
    at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:687)
    at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:4645)
    at androidx.recyclerview.widget.RecyclerView.dispatchLayout(RecyclerView.java:4348)
    at androidx.recyclerview.widget.RecyclerView.onLayout(RecyclerView.java:4919)
    at android.view.View.layout(View.java:25822)
    at android.view.ViewGroup.layout(ViewGroup.java:6457)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at android.view.View.layout(View.java:25822)
    at android.view.ViewGroup.layout(ViewGroup.java:6457)
    at androidx.swiperefreshlayout.widget.SwipeRefreshLayout.onLayout(SwipeRefreshLayout.java:704)
    at android.view.View.layout(View.java:25822)
    at android.view.ViewGroup.layout(ViewGroup.java:6457)
    at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1103)
    at android.view.View.layout(View.java:25822)
    at android.view.ViewGroup.layout(ViewGroup.java:6457)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at android.view.View.layout(View.java:25822)
    at android.view.ViewGroup.layout(ViewGroup.java:6457)
    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1891)
    at android.widget.LinearLayout.layoutHorizontal(LinearLayout.java:1880)
    at android.widget.LinearLayout.onLayout(LinearLayout.java:1640)
    at android.view.View.layout(View.java:25822)
    at android.view.ViewGroup.layout(ViewGroup.java:6457)
    at com.google.android.material.appbar.HeaderScrollingViewBehavior.layoutChild(HeaderScrollingViewBehavior.java:145)
    at com.google.android.material.appbar.ViewOffsetBehavior.onLayoutChild(ViewOffsetBehavior.java:43)
    at com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior.onLayoutChild(AppBarLayout.java:2461)
    at androidx.coordinatorlayout.widget.CoordinatorLayout.onLayout(CoordinatorLayout.java:918)
    at android.view.View.layout(View.java:25822)
    at android.view.ViewGroup.layout(ViewGroup.java:6457)
    at androidx.drawerlayout.widget.DrawerLayout.onLayout(DrawerLayout.java:1263)
    at android.view.View.layout(View.java:25822)
    at android.view.ViewGroup.layout(ViewGroup.java:6457)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at android.view.View.layout(View.java:25822)
    at android.view.ViewGroup.layout(ViewGroup.java:6457)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at android.view.View.layout(View.java:25822)
    at android.view.ViewGroup.layout(ViewGroup.java:6457)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at android.view.View.layout(View.java:25822)
    at android.view.ViewGroup.layout(ViewGroup.java:6457)
    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1891)
    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1729)
    at android.widget.LinearLayout.onLayout(LinearLayout.java:1638)
    at android.view.View.layout(View.java:25822)
    at android.view.ViewGroup.layout(ViewGroup.java:6457)
    at android.widget.FrameLayout.layoutChildren(FrameLayout.java:332)
    at android.widget.FrameLayout.onLayout(FrameLayout.java:270)
    at com.android.internal.policy.DecorView.onLayout(DecorView.java:797)
    at android.view.View.layout(View.java:25822)
    at android.view.ViewGroup.layout(ViewGroup.java:6457)
    at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:5164)
    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:4293)
    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:3127)
    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:10807)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1630)
    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1639)
    at android.view.Choreographer.doCallbacks(Choreographer.java:1235)
    at android.view.Choreographer.doFrame(Choreographer.java:1164)
    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:1613)
    at android.os.Handler.handleCallback(Handler.java:1070)
    at android.os.Handler.dispatchMessage(Handler.java:125)
    at android.os.Looper.dispatchMessage(Looper.java:333)
    at android.os.Looper.loopOnce(Looper.java:263)
    at android.os.Looper.loop(Looper.java:367)
    at android.app.ActivityThread.main(ActivityThread.java:9332)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:566)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:837)

App information

  • ID: com.nextcloud.client
  • Version: 340000090
  • Build flavor: generic

Device information

  • [redacted]

Firmware

  • SDK: 36
  • Release: 16
  • Incremental: 2026060601

Android version

16

Device brand and model

Pixel

Stock or custom OS?

Stock

Nextcloud android app version

34.0.0

Nextcloud server version

31.0.10

Using a reverse proxy?

Yes

Android logs

No response

Server error logs



Additional information


No response
Activity
  1. quantology
    added 
    bug
     
    0. Needs triage
     on Jun 15, 2026
  2. alperozturk96 commented on Jun 16, 2026 
    @alperozturk96
    alperozturk96
    on Jun 16, 2026
    Collaborator
    fixed via #17152
  3. alperozturk96
    closed this as completedon Jun 16, 2026
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Metadata
Metadata
Assignees
No one assigned
    Labels
    0. Needs triagebug
    Type
    No type
    Projects
    No projects
      Milestone
      No milestone
      Relationships
      None yet
      Development
      No branches or pull requests
      Issue actions