tidev/titanium-sdk

Android: ListView can crash

hansemannn opened this issue · 5 comments

hansemannn commented

We are receiving the following crash on a regular base:

Exception java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference
  at android.widget.ArrayAdapter.createViewFromResource (ArrayAdapter.java:454)
  at android.widget.ArrayAdapter.getView (ArrayAdapter.java:416)
  at android.widget.AbsListView.obtainView (AbsListView.java:2440)
  at android.widget.ListView.measureHeightOfChildren (ListView.java:1417)
  at android.widget.ListView.onMeasure (ListView.java:1323)
  at android.view.View.measure (View.java:25977)
  at android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:7073)
  at android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
  at android.view.View.measure (View.java:25977)
  at androidx.appcompat.widget.AlertDialogLayout.tryOnMeasure (AlertDialogLayout.java:134)
  at androidx.appcompat.widget.AlertDialogLayout.onMeasure (AlertDialogLayout.java:64)
  at android.view.View.measure (View.java:25977)
  at android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:7073)
  at android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
  at androidx.appcompat.widget.ContentFrameLayout.onMeasure (ContentFrameLayout.java:145)
  at android.view.View.measure (View.java:25977)
  at android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:7073)
  at android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
  at android.view.View.measure (View.java:25977)
  at android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:7073)
  at android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
  at android.view.View.measure (View.java:25977)
  at android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:7073)
  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:25977)
  at android.view.ViewGroup.measureChildWithMargins (ViewGroup.java:7073)
  at android.widget.FrameLayout.onMeasure (FrameLayout.java:194)
  at com.android.internal.policy.DecorView.onMeasure (DecorView.java:832)
  at android.view.View.measure (View.java:25977)
  at android.view.ViewRootImpl.performMeasure (ViewRootImpl.java:3805)
  at android.view.ViewRootImpl.measureHierarchy (ViewRootImpl.java:2539)
  at android.view.ViewRootImpl.performTraversals (ViewRootImpl.java:2836)
  at android.view.ViewRootImpl.doTraversal (ViewRootImpl.java:2278)
  at android.view.ViewRootImpl$TraversalRunnable.run (ViewRootImpl.java:9034)
  at android.view.Choreographer$CallbackRecord.run (Choreographer.java:1227)
  at android.view.Choreographer.doCallbacks (Choreographer.java:1024)
  at android.view.Choreographer.doFrame (Choreographer.java:934)
  at android.view.Choreographer$FrameDisplayEventReceiver.run (Choreographer.java:1212)
  at android.os.Handler.handleCallback (Handler.java:938)
  at android.os.Handler.dispatchMessage (Handler.java:99)
  at android.os.Looper.loopOnce (Looper.java:233)
  at android.os.Looper.loop (Looper.java:344)
  at android.app.ActivityThread.main (ActivityThread.java:8191)
  at java.lang.reflect.Method.invoke
  at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run (RuntimeInit.java:584)
  at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1034)

Stackoverlow suggests that it's an uninitialized array issue.

Expected Behavior

The app does not crash.

Actual behavior

The app crashes.

Reproducible sample

Unfortunately, I haven't received any link to our source files, making it hard to find right now.

Steps to reproduce

n/a

Platform

Android

SDK version you are using

11.1.1

Alloy version you are using

No response

m1ga commented

this might also help: dotnet/maui#8377
same last error line ArrayAdapter.java:454 and the stack files look almost identically too. In their case the picker is the issue even though its not visible in the logs

venkat-clone commented

can you Assign me this Issue

hansemannn commented

@venkat-clone Sure - happy to see you on board! @m1ga I am not sure if that solves it, because it kind of looks like an activity-related issue, when measureChildWithMargins is called so many times.

m1ga commented

The measureChildWithMargins errors are in the MAUI log too. That PR is here dotnet/maui#8407
Just saying that it could be in a different place and not in the ListView or the add(item) parts. But maybe @venkat-clone can find it 👍