在 alertdialog 之后使用 alarmManager.cancel 删除警报

Question

我在列表项中有一个用于删除该项目的按钮。当有一个警报链接到该项目时，我也想删除警报。要删除项目，我会显示一个警告对话框，并在肯定按钮中使用删除功能：

builder.setPositiveButton("DELETE", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {

                    DeleteList del = new DeleteList();
                    del.execute(listId);
                }
            });

但是我也需要删除闹钟，问题是闹钟设置在另一个activity。我有 PendingIntent 的唯一 ID，但我无法创建 PendingIntent，因为我处于静态上下文中。

如果我这样做：

AddListActivityFragment.deleteAlarmS(alarmId);

我得到无法从静态上下文中引用非静态方法。

如果我这样做：

Intent resultIntent = new Intent(AddListActivity.this, MainActivity.class);
    PendingIntent deleteIntent = PendingIntent.getBroadcast(AddListActivity.this, Integer.parseInt(alarmId), resultIntent, PendingIntent.FLAG_NO_CREATE);
    if(deleteIntent != null) {
               AlarmManager alarmManager = (AlarmManager) AddListActivity.this.getSystemService(Context.ALARM_SERVICE);
        alarmManager.cancel(deleteIntent);
        deleteIntent.cancel();
    }

我得到 "AddListActivity is not an enclosing class"。

我该如何解决这个问题？我怎样才能取消闹钟？我是否使用 AddListActivity 收到的 ID 发送了一些广播？

谢谢

感谢 qbix，我设法使 AddListActivityFragment 中的方法静态化。但是还是没有取消闹钟。

如何在AddListActivityFragment中设置闹钟：

 private void scheduleNotification(Notification notification, long delay, int alarmId) {

    Intent notificationIntent = new Intent(mContext, NotificationPublisher.class);

    notificationIntent.putExtra(NotificationPublisher.NOTIFICATION_ID, alarmId);
    notificationIntent.putExtra(NotificationPublisher.NOTIFICATION, notification);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, alarmId, notificationIntent, PendingIntent.FLAG_ONE_SHOT);
    Log.v("alarm id", "alarmid = " + alarmId);
    long futureInMillis = SystemClock.elapsedRealtime() + delay;
    AlarmManager alarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE);
    alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, futureInMillis, pendingIntent);
}

private Notification getNotification(String content, String subText, int alarmId) {
    Uri uri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    long[] vib = new long[]{1000L, 1000L, 1000L, 1000L};
    Intent resultIntent = new Intent(mContext, MainActivity.class);

    PendingIntent resultPendingIntent =
            PendingIntent.getActivity(
                    mContext,
                    alarmId,
                    resultIntent,
                    PendingIntent.FLAG_UPDATE_CURRENT
            );
    NotificationCompat.Builder builder = new NotificationCompat.Builder(mContext);
    builder.setContentTitle("To do!");
    builder.setContentText(content);
    builder.setSubText(subText);
    builder.setSound(uri);
    builder.setVibrate(vib);
    builder.setSmallIcon(R.drawable.ic_add_white_24dp);
    builder.setAutoCancel(true);
    builder.setContentIntent(resultPendingIntent);
    return builder.build();
}

闹钟设置为：

scheduleNotification(getNotification(title, subText, alarmId), delay, alarmId);

我如何尝试取消闹钟：

 public static void deleteAlarm(String alarmId){
    Toast.makeText(mContext, "delete alarm active", Toast.LENGTH_SHORT).show();
    Log.v("alarm id delete", "alarmid = " + alarmId);
    Intent resultIntent = new Intent(mContext, NotificationPublisher.class);
    PendingIntent deleteIntent = PendingIntent.getBroadcast(mContext, Integer.parseInt(alarmId), resultIntent, PendingIntent.FLAG_NO_CREATE);
    if(deleteIntent != null) {
        Toast.makeText(mContext, "Alarm deleted", Toast.LENGTH_SHORT).show();
        AlarmManager alarmManager = (AlarmManager) mContext.getSystemService(Context.ALARM_SERVICE);
        alarmManager.cancel(deleteIntent);
        deleteIntent.cancel();
    }
}

"delete alarm active" Toast 出现，alarmId 是正确的。但是 Toast "alarm deleted" 没有显示，警报仍然响起。 PendingIntent 不一样吗？

谢谢

Answer 1

在您的 AddListActivity 中，声明类型为 Context 的私有静态成员：

private static Context mContext;

在AddListActivity的onCreate()方法中，初始化：

mContext = this;

在构建PendingIntent和取消闹钟的代码块中，将AddListActivity.this替换为mContext。

Answer 2

我解决了。显然 PendingIntent 需要相同的标志，所以当我在 deleteAlarm 方法中将其更改为 PendingIntent.FLAG_ONE_SHOT 时，它起作用了。感谢您的帮助。

在 alertdialog 之后使用 alarmManager.cancel 删除警报

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