相关疑难解决方法(0)

我试图在我的意图中添加一条额外的消息,以便传递给稍后触发的AlarmManager.我的onReceive正确触发,但extras.getString()返回null

建立:

public PendingIntent getPendingIntent(int uniqueRequestCode, String extra) {
    Intent intent = new Intent(this, ActionReceiver.class);
    intent.putExtra("EXTRA", extra);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(this, uniqueRequestCode,
            intent, 0);
    return pendingIntent;
}

public void setSilentLater(TimeRule timeRule) {
    boolean[] weekdays = timeRule.getReoccurringWeekdays();
    int dayOfWeek = 0;

    for (boolean day : weekdays) {
        dayOfWeek++;
        if (day == true) {
            Calendar cal = Calendar.getInstance();

            AlarmManager alarmManager = (AlarmManager) this
                    .getSystemService(Context.ALARM_SERVICE);

            cal.set(Calendar.DAY_OF_WEEK, dayOfWeek);
            cal.set(Calendar.HOUR_OF_DAY,
                    timeRule.getStartTime().get(Calendar.HOUR_OF_DAY));
            cal.set(Calendar.MINUTE,
                    timeRule.getStartTime().get(Calendar.MINUTE));
            cal.set(Calendar.SECOND, 0);
            cal.set(Calendar.MILLISECOND, 0);

            alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,
                    cal.getTimeInMillis(), 3600000 * 7, getPendingIntent(0, "RINGER_OFF"));
  } …

我正在尝试将一个可序列化的对象发送到待处理的Intent.问题是收到的警报返回为null.即使Alarm实现了可序列化的接口.

//AlarmService.java

Intent myIntent = new Intent(getApplicationContext(), AlarmAlertBroadcastReciever.class);
Bundle bundle = new Bundle();
bundle.putSerializable("alarm", alarm);
myIntent.putExtras(bundle);
PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, myIntent, PendingIntent.FLAG_CANCEL_CURRENT);

AlarmManager alarmManager = (AlarmManager)getApplicationContext().getSystemService(Context.ALARM_SERVICE);

alarmManager.set(AlarmManager.RTC_WAKEUP, alarm.getAlarmTime().getTimeInMillis(), pendingIntent);

收到的警报为空.

//AlarmAlertBroadcastReceiver.java

public class AlarmAlertBroadcastReciever extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        Alarm alarm = (Alarm)intent.getExtras().getSerializable("alarm");
    }
}

编辑:我尝试过的更多内容如下,但它似乎不起作用:

//AlarmService.java

Intent myIntent = new Intent(getApplicationContext(), AlarmAlertBroadcastReciever.class);
myIntent.putExtra("alarm", alarm);
myIntent.setAction("abc.xyz");

PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, myIntent, PendingIntent.FLAG_UPDATE_CURRENT);

AlarmManager alarmManager = (AlarmManager)getApplicationContext().getSystemService(Context.ALARM_SERVICE);

alarmManager.set(AlarmManager.RTC_WAKEUP, alarm.getAlarmTime().getTimeInMillis(), pendingIntent);

收到的警报为空.

//AlarmAlertBroadcastReceiver.java

public …

我正在寻找一种方法来创建一个preferencein Settings来在Android应用程序中的一天中的特定时间(由用户在设置中设置)发送通知.我已经看过了不同的线程像这样,但是这是不是在Android的奥利奥工作.

有人可以帮我这个或者指点我一个教程吗？