異常調度輸入事件

Question

我正在嘗試列表視圖。我的應用程序正在第一次tme打開，但在主菜單返回後，它不再工作，並給模擬器上的錯誤「不幸的應用程序已停止」。

這是我的主要。

public class ListMyJob extends Activity { 
     ItemListBaseAdapter adapter;    //////after answers ı added. 
     public void onBackPressed() {    //////after answers ı added. 
               //////after answers ı added. 
      adapter.notifyDataSetChanged();  //////after answers ı added. 

    }           //////after answers ı added. 
    ArrayList<ItemDetails> jobs = new ArrayList<ItemDetails>();{ /////////////some list data /////////////////////} 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
     ArrayList<ItemDetails> image_details = jobs; 

     final ListView lv1 = (ListView) findViewById(R.id.listV_main); 
     lv1.setAdapter(new ItemListBaseAdapter(this, image_details)); 
     lv1.setOnItemClickListener(new OnItemClickListener() { 
      @Override 
      public void onItemClick(AdapterView<?> a, View v, int position, long id) { 
       Object o = lv1.getItemAtPosition(position); 
       ItemDetails obj_itemDetails = (ItemDetails)o; 
       Toast.makeText(ListMyJob.this, "You have chosen : " + " " + obj_itemDetails.getName(), Toast.LENGTH_LONG).show(); 
       Intent intObj = new Intent(ListMyJob.this,ListMyExercises.class); /////modified 

       intObj.putExtra("description",obj_itemDetails.getItemDescription()); 
       intObj.putExtra("name",obj_itemDetails.getName()); 
       intObj.putExtra("imagenumber",obj_itemDetails.getImageNumber()); 
       intObj.putExtra("videonumber", obj_itemDetails.getVideoNumber()); 

       ItemDetailsWrapper wrapper = new ItemDetailsWrapper(obj_itemDetails.getChild()); 
       intObj.putExtra("exerciselist", wrapper); // i.putExtra("obj", new ItemDetailsWrapper(list)); 

       startActivity(intObj); 
      } 
     }); 
    } 
} 

我在logcat上得到這些錯誤。

04-24 09:31:44.596: E/InputEventReceiver(2170): Exception dispatching input event. 
04-24 09:31:44.596: E/MessageQueue-JNI(2170): Exception in MessageQueue callback: handleReceiveCallback 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): java.lang.IllegalStateException: The content of the adapter has changed but ListView did not receive a notification. Make sure the content of your adapter is not modified from a background thread, but only from the UI thread. [in ListView(2131099660, class android.widget.ListView) with Adapter(class com.jsupport.HealthyMe.ItemListBaseAdapter)] 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.widget.ListView.layoutChildren(ListView.java:1544) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.widget.AbsListView.onTouchEvent(AbsListView.java:3403) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.View.dispatchTouchEvent(View.java:7246) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2168) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1903) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1953) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1405) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.app.Activity.dispatchTouchEvent(Activity.java:2410) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1901) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.View.dispatchPointerEvent(View.java:7426) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3220) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3165) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4292) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4271) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4363) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:179) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.os.MessageQueue.nativePollOnce(Native Method) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.os.MessageQueue.next(MessageQueue.java:125) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.os.Looper.loop(Looper.java:124) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at android.app.ActivityThread.main(ActivityThread.java:5041) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at java.lang.reflect.Method.invokeNative(Native Method) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at java.lang.reflect.Method.invoke(Method.java:511) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
04-24 09:31:44.676: E/MessageQueue-JNI(2170): at dalvik.system.NativeStart.main(Native Method) 
04-24 09:31:44.676: D/AndroidRuntime(2170): Shutting down VM 
04-24 09:31:44.676: W/dalvikvm(2170): threadid=1: thread exiting with uncaught exception (group=0x40a71930) 
04-24 09:31:44.716: E/AndroidRuntime(2170): FATAL EXCEPTION: main 
04-24 09:31:44.716: E/AndroidRuntime(2170): java.lang.IllegalStateException: The content of the adapter has changed but ListView did not receive a notification. Make sure the content of your adapter is not modified from a background thread, but only from the UI thread. [in ListView(2131099660, class android.widget.ListView) with Adapter(class com.jsupport.HealthyMe.ItemListBaseAdapter)] 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.widget.ListView.layoutChildren(ListView.java:1544) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.widget.AbsListView.onTouchEvent(AbsListView.java:3403) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.View.dispatchTouchEvent(View.java:7246) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2168) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1903) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2174) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1917) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1953) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1405) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.app.Activity.dispatchTouchEvent(Activity.java:2410) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1901) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.View.dispatchPointerEvent(View.java:7426) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.ViewRootImpl.deliverPointerEvent(ViewRootImpl.java:3220) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:3165) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:4292) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:4271) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:4363) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:179) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.os.MessageQueue.nativePollOnce(Native Method) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.os.MessageQueue.next(MessageQueue.java:125) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.os.Looper.loop(Looper.java:124) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at android.app.ActivityThread.main(ActivityThread.java:5041) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at java.lang.reflect.Method.invokeNative(Native Method) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at java.lang.reflect.Method.invoke(Method.java:511) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
04-24 09:31:44.716: E/AndroidRuntime(2170):  at dalvik.system.NativeStart.main(Native Method) 
04-24 09:36:44.811: I/Process(2170): Sending signal. PID: 2170 SIG: 9 

Answer 1

使用

onBakcPressed(){ 
    adapter.notifydatasetchanged(); 
}