CODEWITHSUNDEEP
androidnullpointerexceptionandroid-arrayadapter
Manu
Manu

Reputation: 379

NullPointer Exception at android.widget.ArrayAdapter.getCount

My App is crashing on some devices for some users, I could not reproduce it though. But i can see the crash reports. I have listview which uses custom ArrayAdapter(extends android.widget.ArrayAdapter) on multiple places. I have no idea where it is happening and how. Crash logs says NullPointerException but not pointing where it is actually happening in my code. Somebody please help me in figuring this out. Here is the logs 

java.lang.NullPointerException
        at android.widget.ArrayAdapter.getCount(ArrayAdapter.java:330)
        at android.widget.HeaderViewListAdapter.getCount(HeaderViewListAdapter.java:132)
        at android.widget.ListView.onMeasure(ListView.java:1155)
        at android.view.View.measure(View.java:17387)
        at android.support.v4.widget.SwipeRefreshLayout.onMeasure(SwipeRefreshLayout.java:353)
        at android.view.View.measure(View.java:17387)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5353)
        at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
        at android.view.View.measure(View.java:17387)
        at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:719)
        at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:455)
        at android.view.View.measure(View.java:17387)
        at android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:762)
        at android.view.View.measure(View.java:17387)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5353)
        at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
        at android.view.View.measure(View.java:17387)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5353)
        at com.android.internal.widget.ActionBarOverlayLayout.onMeasure(ActionBarOverlayLayout.java:391)
        at android.view.View.measure(View.java:17387)
        at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:5353)
        at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
        at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2533)
        at android.view.View.measure(View.java:17387)
        at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2214)
        at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1351)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1550)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1235)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6472)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:803)
        at android.view.Choreographer.doCallbacks(Choreographer.java:603)
        at android.view.Choreographer.doFrame(Choreographer.java:573)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:789)
        at android.os.Handler.handleCallback(Handler.java:733)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:157)
        at android.app.ActivityThread.main(ActivityThread.java:5356)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
        at dalvik.system.NativeStart.main(Native Method)

Upvotes: 0

Views: 704

Answers (1)

Manu
Manu

Reputation: 379

Thank you Blackbelt for your answer. That was the exact reason behind the issue. The array of object I was passing to the super constructor of array adapter was null. I was saving it in a static array and it was becoming null somehow in some scenarios. Initializing the array again solved my problem.

Upvotes: 1

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