Question

好的。我正在开发一个应用程序，用户可以安排时间静音手机，振动手机等等......

该应用程序看起来很好并且功能正常，直到我们获取代码的取消警报部分。

以下是我尝试取消闹钟的方法....但它无效。

 public static void DeleteSpecificAlarm(Context context, int alarmType, int id){
        AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

        Intent updateServiceIntent;
        switch(alarmType){
            case 0:
                updateServiceIntent = new Intent(context, MuteAlarmReciever.class);
                break;
            case 1:
                updateServiceIntent = new Intent(context, VibrateAlarmReciever.class);
                break;
            case 2:
                updateServiceIntent = new Intent(context, CustomAlarmReciever.class);
                break;
            default:
                updateServiceIntent = new Intent(context, MuteAlarmReciever.class);
                break;
        }
        PendingIntent pendingUpdateIntent = PendingIntent.getService(context, id, updateServiceIntent, 0);

        // Cancel alarms
        try {
            alarmManager.cancel(pendingUpdateIntent);
            Toast.makeText(context, "Alarm Removed", Toast.LENGTH_LONG).show();
        } catch (Exception e) {
            Log.e("Manager", "AlarmManager update was not canceled. " + e.toString());
            Toast.makeText(context, "AlarmManager update was not canceled!", Toast.LENGTH_LONG).show();
        }
    }

请求：“包含警报创建代码。”

以下是我创建警报的方法：

public static void saveNewData(final Context context, final int volumeType, final int volumeLevel, final TimePicker timePicker){
        ParseQuery query = new ParseQuery("Schedule");
        query.fromLocalDatastore();
        query.findInBackground(new FindCallback<ParseObject>() {
            @Override
            public void done(List<ParseObject> objects, ParseException e) {
                if(e == null){
                    final int alarmID = objects.size() + 1;
                    ParseObject scheduledItem = new ParseObject("Schedule");
                    scheduledItem.put("volumeType", volumeType);
                    scheduledItem.put("volumeLevel", volumeLevel);
                    scheduledItem.put("alarmID", alarmID);
                    int hour;
                    int minute;
                    if(Build.VERSION.SDK_INT >= 23){
                        hour =  timePicker.getHour();
                        minute = timePicker.getMinute();
                    } else {
                        hour =  timePicker.getCurrentHour();
                        minute = timePicker.getCurrentMinute();

                    }
                    scheduledItem.put("hour", hour);
                    scheduledItem.put("minute", minute);

                    final Calendar calendar = Calendar.getInstance(); //Full Current Time
                    calendar.set(Calendar.HOUR_OF_DAY, hour);
                    calendar.set(Calendar.MINUTE, minute);
                    calendar.set(Calendar.SECOND, 0);
                    Log.i("SchedRinger", "User saved new time. User's selected time was: " + calendar.getTime().toString() + "\n" +
                            "Reciever ID: " + alarmID + "\n" +
                            "Alarm Type: " + volumeType + "\n" +
                            "Volume Level: " + volumeLevel + " (Irrelevent if Alarm Type != 2)");

                    if(hour > 12){
                        if(minute < 10)
                            scheduledItem.put("time",  hour - 12 + ":0" + minute + " PM");
                        else
                            scheduledItem.put("time",  hour - 12 + ":" + minute + " PM");
                    } else {
                        if(minute < 10)
                            scheduledItem.put("time",  hour + ":0" + minute + " PM");
                        else
                            scheduledItem.put("time",  hour + ":" + minute + " PM");
                    }

                    scheduledItem.pinInBackground(new SaveCallback() {
                        @Override
                        public void done(ParseException e) {
                            if(e == null){
                                Toast.makeText(context, "Saved.", Toast.LENGTH_LONG).show();
                                ScheduleSpecificAlarm(context, calendar, volumeType, volumeLevel, alarmID);
                            } else {
                                Toast.makeText(context, "Failed to save. " + e.getMessage(), Toast.LENGTH_LONG).show();
                            }
                        }
                    });
                } else {
                    //TODO: Error
                }
            }
        });


    }

private static void ScheduleSpecificAlarm(Context context, Calendar cal, int alarmType, int volumeLevel, int id){

        Intent intentAlarm;

        switch (alarmType){
            case 0:
                intentAlarm = new Intent(context, MuteAlarmReciever.class);
                break;
            case 1:
                intentAlarm = new Intent(context, VibrateAlarmReciever.class);
                break;
            case 2:
                intentAlarm = new Intent(context, CustomAlarmReciever.class);
                intentAlarm.putExtra("volumeLevel", volumeLevel);
                break;
            default:
                intentAlarm = new Intent(context, MuteAlarmReciever.class);
                Toast.makeText(context, "Error. Variable passed in wrong on Alarm Creation. Defaulted to 'mute' alarm", Toast.LENGTH_LONG).show();
                break;
        }

        AlarmManager alarmManager = (AlarmManager)context.getSystemService(Context.ALARM_SERVICE);

        PendingIntent pendingIntent = PendingIntent.getBroadcast(context, id, intentAlarm, 0);

        alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(),AlarmManager.INTERVAL_DAY, pendingIntent);
    }

我正在使用Parse.com进行保存。如果您不了解API，只需知道您可以在ParseObjects中存储和保存数据。这就像Prefs系统android hasm，但我不必担心通过意图发送它。

Catch声明被不抛出。为什么不工作？有什么想法吗？

Answer 1

而不是PendingIntent.getService(context, id, updateServiceIntent, 0);中的0尝试使用PendingIntent.FLAG_UPDATE_CURRENT

Answer 2

正如文档（https://developer.android.com/reference/android/app/AlarmManager.html#cancel(android.app.PendingIntent)）所述，AlarmManager会致电intent.filterEquals(Intent)以了解是否与PendingIntent匹配。

我建议你在intent.filterEquals(Intent)的开头设置一个断点，看看它返回false的位置。

Answer 3

我明白了。它实际上相当简单，一行代码！在DeleteSpecificAlarm（）方法中，我使用getService而不是getBroadcast。改变它修复了整个事情！谢谢你所有的帮助！

Android取消警报管理器 - 不工作

3 个答案: