AlarmManager 无法取消警报

Question

看看有没有人发现这个问题，帮我解开谜团。我有以下情况。该应用程序是一个简单的待办事项列表：

public class NewToDo extends Activity {

    private PendingIntent pendingIntent; 
    private AlarmManager manager;
  ...

当用户创建带有通知的待办事项时，我使用此 class 的方法之一创建它，如下所示：

  int interval = 30000;
  Intent alarmIntent = new Intent(this, AlarmReceiver.class);
  /*Let's let the putExtras apart, as documentation says they're not considered when comparing intents, but I add some of them*/
  manager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
  pendingIntent = PendingIntent.getBroadcast(getBaseContext(), _id, alarmIntent, alarmIntent.FILL_IN_DATA);
  /*Printing _id we see 3, for instance, but is a unique identifier to associate the notification with this to-do item*/
  /*I use the flag alarmIntent.FILL_IN_DATA because I want to send extras to create a custom notification*/                  
  manager.setInexactRepeating(AlarmManager.RTC_WAKEUP,
                System.currentTimeMillis() + interval, interval,
                pendingIntent);

我退出应用程序（但如果我不退出也没有区别）。然后通知每 30 秒正确到达一次，选择它应用程序将在项目的详细视图上启动。操作栏按钮允许对其进行编辑，再次调用相同的 class，NewToDo。在编辑时我可以取消与待办事项相关的通知，我的代码是这样的 - 在 NewToDo class-:

  AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
  Intent i = new Intent(this, AlarmReceiver.class); //creating a matching Intent

  Log.v(getString(R.string.app_name), "_id: " + _id);  //the 3 aforementioned

  PendingIntent displayIntent = PendingIntent.getActivity(getBaseContext(), _id, i, alarmIntent.FILL_IN_DATA);
  alarmManager.cancel(displayIntent);

但是通知会每 30 秒出现一次，因此不会被取消。

我在另一个 post 中看到了以下建议：

"Intent intentYouWantToCancel = new Intent(this, AlarmReceive.class); intentYouWantToCancel.setAction("aRelevantString");

when you set the alarmmanager as well as when you want to delete it. "

所以我将两个意图作为 'aRelevantString' 转换为唯一标识符的字符串。但同样的问题。

还更改了 this 的 getBaseContext()，以防万一，但没有区别。

没有错误，只是通知不断重复，忽略了我的取消。任何想法？

PS：每次运行我都会重新启动 AVD。我意识到我使用 filterEquals 打印的方式根本没有任何意义（为此花费了太多时间），但这并不影响问题的其余部分。

Answer 1

如下所示修改您的代码并尝试，这可能对您有所帮助。这是我之前从 SO 本身使用的那个：

Intent intent = new Intent(this, AlarmReceiver.class);
PendingIntent sender = PendingIntent.getBroadcast(this, 0, intent, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);

alarmManager.cancel(sender);

Answer 2

终于这样解决了。要创建警报：

public class NewToDo extends Activity {

    private PendingIntent pendingIntent; 
    private AlarmManager manager;
    ...

int interval = 30000;
manager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);

Intent alarmIntent = new Intent(this, AlarmReceiver.class);
alarmIntent.putExtra("id", _id);
pendingIntent = PendingIntent.getBroadcast(this, _id, alarmIntent,0);
manager.setInexactRepeating(AlarmManager.RTC_WAKEUP,
                System.currentTimeMillis() + interval, interval,
                pendingIntent);

要取消那个具体的警报：

manager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
Intent i = new Intent(getBaseContext(), AlarmReceiver.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(
                getApplicationContext(), _id, i, 0);

manager.cancel(pendingIntent);
pendingIntent.cancel();

AlarmManager 无法取消警报

AlarmManager can't cancel an alarm

notifications

android

alarmmanager

android-pendingintent