删除通知会导致崩溃

我在删除现有通知时遇到问题。我浏览过其他文章，并没有看到我做错了什么。下面是设置删除通知会导致崩溃

PendingIntent pendingIntent = PendingIntent.getActivity(getApplicationContext(), 0, intent1, Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK); 

    Long rowId = intent.getExtras().getLong(RemindersDbAdapter.KEY_ROWID); 
    int id = (int) ((long) rowId); 

    NotificationManager notificationManager = (NotificationManager) getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE); 
    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(getApplicationContext()) 
    .setContentText(notificationContent) 
    .setContentTitle(notificationTitle) 
    .setSmallIcon(smallIcon) 
    .setAutoCancel(true) 
    .setTicker(notificationTitle) 
    .setLargeIcon(largeIcon) 
    .setDefaults(Notification.DEFAULT_LIGHTS | Notification.DEFAULT_SOUND) 
    .setContentIntent(pendingIntent); 


    Notification notification = notificationBuilder.build(); 
    notificationManager.notify(id, notification); 
}

下面的代码是我尝试删除通知：

public void cancelnote(long mRowId) { 
    // TODO Auto-generated method stub 
    int id = (int) mRowId; 
    NotificationManager notificationManager = (NotificationManager) getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE); 

    Log.e(TAG2, "changed to id" + id); 
    notificationManager.cancel(id); 


}

这是它崩溃。

NotificationManager notificationManager = (NotificationManager) getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE);

这是错误日志

05-20 11:00:12.364: W/dalvikvm(3159): threadid=1: thread exiting with uncaught exception (group=0x414e6438) 
05-20 11:00:12.384: E/AndroidRuntime(3159): FATAL EXCEPTION: main 
05-20 11:00:12.384: E/AndroidRuntime(3159): java.lang.NullPointerException 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at android.content.ContextWrapper.getApplicationContext(ContextWrapper.java:101) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at com.opd247.OPD247.ReminderCancel.cancelnote(ReminderCancel.java:28) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at com.opd247.OPD247.meds.onContextItemSelected(meds.java:191) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at android.app.Activity.onMenuItemSelected(Activity.java:2592) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at com.opd247.OPD247.meds.onMenuItemSelected(meds.java:157) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at com.android.internal.policy.impl.PhoneWindow$DialogMenuCallback.onMenuItemSelected(PhoneWindow.java:3859) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:735) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:149) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:874) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at com.android.internal.view.menu.MenuDialogHelper.onClick(MenuDialogHelper.java:193) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at com.android.internal.app.AlertController$AlertParams$3.onItemClick(AlertController.java:934) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at android.widget.AdapterView.performItemClick(AdapterView.java:298) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at android.widget.AbsListView.performItemClick(AbsListView.java:1268) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at android.widget.AbsListView$PerformClick.run(AbsListView.java:3059) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at android.widget.AbsListView$1.run(AbsListView.java:3950) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at android.os.Handler.handleCallback(Handler.java:615) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at android.os.Handler.dispatchMessage(Handler.java:92) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at android.os.Looper.loop(Looper.java:137) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at android.app.ActivityThread.main(ActivityThread.java:4918) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at java.lang.reflect.Method.invokeNative(Native Method) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at java.lang.reflect.Method.invoke(Method.java:511) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1004) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:771) 
05-20 11:00:12.384: E/AndroidRuntime(3159):  at dalvik.system.NativeStart.main(Native Method)

来源

2013-05-20 JeffK

我建议从行移除getApplicationContext()。这对我来说工作正常 -

NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

来源

2013-05-20 17:22:34 jaibatrik

，不能正常工作。即使没有getApplicationContext（） – JeffK

仍然在该行崩溃但现在的错误是什么？它不可能是相同的错误吗？ – jaibatrik

现在它说：E/AndroidRuntime（11748）：在android.content.ContextWrapper.getSystemService（ContextWrapper.java:423） – JeffK

你可以试试这个：

NotificationManager mNotificationManager = (NotificationManager) getActivity().getSystemService(Context.NOTIFICATION_SERVICE);

这个工作对我来说...

来源

2013-10-11 09:19:49 beginner

删除通知会导致崩溃

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