NPE on opening the app again that was idle (in background)

[RitikaPahwa4444]

java.lang.NullPointerException: Parameter specified as non-null is null: method [fr.free.nrw](https://fr.free.nrw/).commons.profile.leaderboard.LeaderboardFragment$SelectionListener.onItemSelected, parameter view
at [fr.free.nrw](https://fr.free.nrw/).commons.profile.leaderboard.LeaderboardFragment$SelectionListener.onItemSelected(Unknown Source:2)
at android.widget.AdapterView.fireOnSelected(AdapterView.java:957)
at android.widget.AdapterView.dispatchOnItemSelected(AdapterView.java:946)
at android.widget.AdapterView.selectionChanged(AdapterView.java:935)
at android.widget.AdapterView.checkSelectionChanged(AdapterView.java:1119)
at android.widget.AdapterView.handleDataChanged(AdapterView.java:1095)
at android.widget.AbsSpinner.onMeasure(AbsSpinner.java:193)
at android.widget.Spinner.onMeasure(Spinner.java:619)
at androidx.appcompat.widget.AppCompatSpinner.onMeasure(AppCompatSpinner.java:444)
at android.view.View.measure(View.java:28234)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7018)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1608)
at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:1240)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:723)
at android.view.View.measure(View.java:28234)
at androidx.constraintlayout.widget.ConstraintLayout$Measurer.measure(ConstraintLayout.java:763)
at androidx.constraintlayout.solver.widgets.analyzer.BasicMeasure.measure(BasicMeasure.java:426)
at androidx.constraintlayout.solver.widgets.analyzer.BasicMeasure.measureChildren(BasicMeasure.java:105)
at androidx.constraintlayout.solver.widgets.analyzer.BasicMeasure.solverMeasure(BasicMeasure.java:247)
at androidx.constraintlayout.solver.widgets.ConstraintWidgetContainer.measure(ConstraintWidgetContainer.java:117)
at androidx.constraintlayout.widget.ConstraintLayout.resolveSystem(ConstraintLayout.java:1532)
at androidx.constraintlayout.widget.ConstraintLayout.onMeasure(ConstraintLayout.java:1607)
at android.view.View.measure(View.java:28234)
at androidx.viewpager.widget.ViewPager.onMeasure(ViewPager.java:1638)
at android.view.View.measure(View.java:28234)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:735)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:481)
at android.view.View.measure(View.java:28234)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7018)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1608)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:878)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:721)
at android.view.View.measure(View.java:28234)
at androidx.drawerlayout.widget.DrawerLayout.onMeasure(DrawerLayout.java:1156)
at android.view.View.measure(View.java:28234)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7018)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at androidx.appcompat.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:145)
at android.view.View.measure(View.java:28234)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7018)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1608)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:878)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:721)
at android.view.View.measure(View.java:28234)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7018)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at android.view.View.measure(View.java:28234)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7018)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1608)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:878)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:721)
at android.view.View.measure(View.java:28234)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:7018)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at [com.android](https://com.android/).internal.policy.DecorView.onMeasure(DecorView.java:740)
at android.view.View.measure(View.java:28234)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:5123)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:3475)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:3814)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:3155)
at android.view.ViewRootImpl$[TraversalRunnable.run](https://traversalrunnable.run/)(ViewRootImpl.java:10833)
at android.view.Choreographer$[CallbackRecord.run](https://callbackrecord.run/)(Choreographer.java:1406)
at android.view.Choreographer$[CallbackRecord.run](https://callbackrecord.run/)(Choreographer.java:1415)
at android.view.Choreographer.doCallbacks(Choreographer.java:1015)
at android.view.Choreographer.doFrame(Choreographer.java:945)
at android.view.Choreographer$[FrameDisplayEventReceiver.run](https://framedisplayeventreceiver.run/)(Choreographer.java:1389)
at android.os.Handler.handleCallback(Handler.java:1001)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loopOnce(Looper.java:268)
at android.os.Looper.loop(Looper.java:384)
at [android.app](https://android.app/).ActivityThread.main(ActivityThread.java:8921)
at java.lang.reflect.Method.invoke(Native Method)
at [com.android](https://com.android/).internal.os.RuntimeInit$[MethodAndArgsCaller.run](https://methodandargscaller.run/)(RuntimeInit.java:580)
at [com.android](https://com.android/).internal.os.ZygoteInit.main(ZygoteInit.java:907)

IS_SILENT=false
USER_CRASH_DATE=2025-05-27T14:13:34.644+02:00

opened app (that was idle in the background)

[rohit9625]

Which screen was opened when the app was idle?

[RitikaPahwa4444]

Looks like leaderboard from the logs, but we'll have to check this.