设置定期警报

Question

我有一个提醒应用程序，该应用程序应在设置后每周的特定时间的特定日期通知用户。

变量“ frequency_value”包含警报应该在一周的哪几天发出的数据。它是1和2的字符串，其中2表示警报应在一周中的这一天响起，并且顺序为周一至周日。

因此1111112表示仅在周日发出警报，而1212111表示仅在周二和周四发出警报。

但是它不能正常工作。有人可以帮忙吗？

public void next_alarm(Context context)
{
    Integer day_sequence[] = new Integer[7];
    Calendar now = Calendar.getInstance();
    Calendar alarm_time = Calendar.getInstance();
    String d[] = time.split(":");
    alarm_time.set(Calendar.HOUR_OF_DAY, Integer.parseInt(d[0]));
    alarm_time.set(Calendar.MINUTE, Integer.parseInt(d[1]));
    alarm_time.set(Calendar.SECOND, 0);
    switch(now.get(Calendar.DAY_OF_WEEK))
    {
        case Calendar.SUNDAY:
            day_sequence = new Integer[]{1, 2, 3, 4, 5, 6, 7};
            break;
        case Calendar.MONDAY:
            day_sequence = new Integer[]{2, 3, 4, 5, 6, 7, 1};
            break;
        case Calendar.TUESDAY:
            day_sequence = new Integer[]{3, 4, 5, 6, 7, 1, 2};
            break;
        case Calendar.WEDNESDAY:
            day_sequence = new Integer[]{4, 5, 6, 7, 1, 2, 3};
            break;
        case Calendar.THURSDAY:
            day_sequence = new Integer[]{5, 6, 7, 1, 2, 3, 4};
            break;
        case Calendar.FRIDAY:
            day_sequence = new Integer[]{6, 7, 1, 2, 3, 4, 5};
            break;
        case Calendar.SATURDAY:
            day_sequence = new Integer[]{7, 1, 2, 3, 4, 5, 6};
            break;
    }
    for(int i=0;i<7;i++) {
        if(String.valueOf(frequency_value).charAt(day_sequence[i]) == '2')
        {
            Intent myIntent1 = new Intent(context, Task_Notification_BroadcastReceiver.class);
            myIntent1.putExtra("frequency_value", frequency_value);
            myIntent1.putExtra("task_time", time);
            myIntent1.putExtra("task_full_text", full_text);
            myIntent1.putExtra("task_text", text);

            PendingIntent pendingIntent1 = PendingIntent.getBroadcast(context, Integer.parseInt(time.replace(":", "0")), myIntent1,
                    PendingIntent.FLAG_UPDATE_CURRENT);
            alarm_time.add(Calendar.DAY_OF_YEAR, i+1);
            AlarmManager alarmManager1 = (AlarmManager) context.getSystemService(ALARM_SERVICE);

            assert alarmManager1 != null;
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                alarmManager1.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, alarm_time.getTimeInMillis(), pendingIntent1);
                table_alarms_db.addAlarm(new Database_Alarms(null, alarm_time.getTimeInMillis(), time, text, full_text, frequency_value));
            }
            else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
                alarmManager1.setExact(AlarmManager.RTC_WAKEUP, alarm_time.getTimeInMillis(), pendingIntent1);
                table_alarms_db.addAlarm(new Database_Alarms(null, alarm_time.getTimeInMillis(), time, text, full_text, frequency_value));
            }
            else {
                alarmManager1.set(AlarmManager.RTC_WAKEUP, alarm_time.getTimeInMillis(), pendingIntent1);
                table_alarms_db.addAlarm(new Database_Alarms(null, alarm_time.getTimeInMillis(), time, text, full_text, frequency_value));
            }
            break;
        }
    }
}