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NullPointerException at android. widget. AbsListView. obtainView at android. widget. ListView. makeAndAddView, androidlistview

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Author: User
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NullPointerException at android. widget. AbsListView. obtainView at android. widget. ListView. makeAndAddView, androidlistview

 

When using ExpandableListView, the following error is returned. Online Search found that null was returned in the getGroupView () method of CommonNumberQueryAdapter. Pay attention to the details !!!

 

12-19 17:32:41. 822: E/AndroidRuntime (1894): fatal exception: main
12-19 17:32:41. 822: E/AndroidRuntime (1894): java. lang. NullPointerException
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. widget. AbsListView. obtainView (AbsListView. java: 2269)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. widget. ListView. makeAndAddView (ListView. java: 1769)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. widget. ListView. fillDown (ListView. java: 672)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. widget. ListView. fillSpecific (ListView. java: 1330)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. widget. ListView. layoutChildren (ListView. java: 1600)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. widget. AbsListView. onLayout (AbsListView. java: 2102)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. View. layout (View. java: 13754)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. ViewGroup. layout (ViewGroup. java: 4362)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. widget. LinearLayout. setChildFrame (LinearLayout. java: 1649)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. widget. LinearLayout. layoutVertical (LinearLayout. java: 1507)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. widget. LinearLayout. onLayout (LinearLayout. java: 1420)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. View. layout (View. java: 13754)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. ViewGroup. layout (ViewGroup. java: 4362)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. widget. FrameLayout. onLayout (FrameLayout. java: 448)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. View. layout (View. java: 13754)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. ViewGroup. layout (ViewGroup. java: 4362)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. widget. LinearLayout. setChildFrame (LinearLayout. java: 1649)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. widget. LinearLayout. layoutVertical (LinearLayout. java: 1507)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. widget. LinearLayout. onLayout (LinearLayout. java: 1420)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. View. layout (View. java: 13754)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. ViewGroup. layout (ViewGroup. java: 4362)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. widget. FrameLayout. onLayout (FrameLayout. java: 448)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. View. layout (View. java: 13754)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. ViewGroup. layout (ViewGroup. java: 4362)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. ViewRootImpl. Adjust mlayout (ViewRootImpl. java: 1866)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. ViewRootImpl. extends mtraversals (ViewRootImpl. java: 1687)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. ViewRootImpl. doTraversal (ViewRootImpl. java: 998)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. ViewRootImpl $ TraversalRunnable. run (ViewRootImpl. java: 4212)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. Choreographer $ CallbackRecord. run (Choreographer. java: 725)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. Choreographer. doCallbacks (Choreographer. java: 555)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. Choreographer. doFrame (Choreographer. java: 525)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. view. Choreographer $ FrameDisplayEventReceiver. run (Choreographer. java: 711)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. OS. Handler. handleCallback (Handler. java: 615)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. OS. Handler. dispatchMessage (Handler. java: 92)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. OS. Looper. loop (Looper. java: 137)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at android. app. ActivityThread. main (ActivityThread. java: 4745)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at java. lang. reflect. Method. invokeNative (Native Method)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at java. lang. reflect. Method. invoke (Method. java: 511)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at com. android. internal. OS. ZygoteInit $ MethodAndArgsCaller. run (ZygoteInit. java: 786)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at com. android. internal. OS. ZygoteInit. main (ZygoteInit. java: 553)
12-19 17:32:41. 822: E/AndroidRuntime (1894): at dalvik. system. NativeStart. main (Native Method)

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