[Material Carousel] Null Pointer Exception

[CodeWithAthari]

Description: It was working fine but when i made an app for someone & he published on playstore we got this error: Attempt to invoke virtual method 'com.google.android.material.carousel.KeylineState com.google.android.material.carousel.KeylineStateList.getDefaultState()' on a null object reference\

App simply crashes because carousel is on main activity complete logs:\ Attempt to invoke virtual method 'com.google.android.material.carousel.KeylineState com.google.android.material.carousel.KeylineStateList.getDefaultState()' on a null object reference at com.google.android.material.carousel.CarouselLayoutManager.computeHorizontalScrollExtent(CarouselLayoutManager.java:1024) at androidx.recyclerview.widget.RecyclerView.computeHorizontalScrollExtent(RecyclerView.java:2027) at android.view.View.canScrollHorizontally(View.java:21461) at androidx.recyclerview.widget.RecyclerView$LayoutManager.onInitializeAccessibilityNodeInfo(RecyclerView.java:10378) at androidx.recyclerview.widget.RecyclerView$LayoutManager.onInitializeAccessibilityNodeInfo(RecyclerView.java:10348) at androidx.recyclerview.widget.RecyclerViewAccessibilityDelegate.onInitializeAccessibilityNodeInfo(RecyclerViewAccessibilityDelegate.java:74) at androidx.core.view.AccessibilityDelegateCompat$AccessibilityDelegateAdapter.onInitializeAccessibilityNodeInfo(AccessibilityDelegateCompat.java:91) at android.view.View.onInitializeAccessibilityNodeInfo(View.java:9095) at android.view.View.createAccessibilityNodeInfoInternal(View.java:9056) at android.view.View$AccessibilityDelegate.createAccessibilityNodeInfo(View.java:32408) at android.view.View.createAccessibilityNodeInfo(View.java:9039) at android.view.AccessibilityInteractionController$AccessibilityNodePrefetcher.prefetchDescendantsOfRealNode(AccessibilityInteractionController.java:1520) at android.view.AccessibilityInteractionController$AccessibilityNodePrefetcher.prefetchDescendantsOfRealNode(AccessibilityInteractionController.java:1543) at android.view.AccessibilityInteractionController$AccessibilityNodePrefetcher.prefetchDescendantsOfRealNode(AccessibilityInteractionController.java:1543) at android.view.AccessibilityInteractionController$AccessibilityNodePrefetcher.prefetchDescendantsOfRealNode(AccessibilityInteractionController.java:1543) at android.view.AccessibilityInteractionController$AccessibilityNodePrefetcher.prefetchDescendantsOfRealNode(AccessibilityInteractionController.java:1543) at android.view.AccessibilityInteractionController$AccessibilityNodePrefetcher.prefetchDescendantsOfRealNode(AccessibilityInteractionController.java:1543) at android.view.AccessibilityInteractionController$AccessibilityNodePrefetcher.prefetchDescendantsOfRealNode(AccessibilityInteractionController.java:1543) at android.view.AccessibilityInteractionController$AccessibilityNodePrefetcher.prefetchDescendantsOfRealNode(AccessibilityInteractionController.java:1543) at android.view.AccessibilityInteractionController$AccessibilityNodePrefetcher.prefetchAccessibilityNodeInfos(AccessibilityInteractionController.java:1309) at android.view.AccessibilityInteractionController.findAccessibilityNodeInfoByAccessibilityIdUiThread(AccessibilityInteractionController.java:416) at android.view.AccessibilityInteractionController.-$$Nest$mfindAccessibilityNodeInfoByAccessibilityIdUiThread(Unknown Source:0) at android.view.AccessibilityInteractionController$PrivateHandler.handleMessage(AccessibilityInteractionController.java:1713) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loopOnce(Looper.java:226) at android.os.Looper.loop(Looper.java:313) at android.app.ActivityThread.main(ActivityThread.java:8757) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:604) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1067)

[imhappi]

Hi @CodeWithAthari ! What version are you using? This looks like the same issue as https://github.com/material-components/material-components-android/issues/3372 and should have been fixed.

Will close this issue, feel free to re-open if it hasn't been fixed

[CodeWithAthari]

I'm using version 1.9.0 & I don't think it's fixed

[CodeWithAthari]

Should i upgrade my project to alpha?

[imhappi]

Yes, the fix was released in 1.11-alpha02