android - AlarmManager 第二天不触发警报

Question

我有一个闹钟管理器，我想每天早上 6 点触发它。我调用类通知，当应用程序首次启动时，它会在每天早上 6 点设置重复警报(重复)。

当用户在早上 6 点到 9 点安装(并首次运行该应用程序)时，警报管理器工作正常，但是如果用户在上午 9 点之后首次运行该应用程序，我应该添加一天和第二天早上 6 点拉响警报。在这样做时，(将日期更改为第二天)，警报会在随机时间触发，大约晚上 10 点(这是一个巨大的差异)。这是我的代码”

    public notification(Context context) {

    this.context=context;

    Intent appstart=new Intent(context,appstartreceiver.class);
    PendingIntent  pi=PendingIntent.getBroadcast(context,0,appstart,PendingIntent.FLAG_UPDATE_CURRENT); // For appstart in the morning
    AlarmManager alarmManager = (AlarmManager)context.getSystemService(context.ALARM_SERVICE);

    Calendar currentCal=Calendar.getInstance();
    Calendar startapp = Calendar.getInstance();// FOr app start in the morning

    startapp.set(Calendar.HOUR_OF_DAY,6);
    startapp.set(Calendar.MINUTE, 0);
    startapp.set(Calendar.SECOND, 0);


    long currentTime = currentCal.getTimeInMillis();


    int diff=(int)(currentTime-startapp.getTimeInMillis())/(1000*60*60);

    if (diff<3)
        alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,startapp.getTimeInMillis(),1000*24*60*60,pi);
    else {

        startapp.add(Calendar.HOUR_OF_DAY, 24);


        alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, startapp.getTimeInMillis(), 1000 * 24 * 60 * 60, pi);
    }

}

Answer 1

将您的代码替换为以下代码...这将在每天早上 6 点触发。它可能对您有所帮助。

public void notification(Context context) {

    Intent intent = new Intent(this, appstartreceiver.class);

    PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 99, intent, PendingIntent.FLAG_UPDATE_CURRENT);
    AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

    Calendar calendar = Calendar.getInstance();
    calendar.set(Calendar.HOUR_OF_DAY, 6);
    calendar.set(Calendar.MINUTE, 0);
    calendar.set(Calendar.SECOND, 0);

    long startUpTime = calendar.getTimeInMillis();

    // To avoid firing the alarm if the time is passed while setting
    if (System.currentTimeMillis() > startUpTime) {
        startUpTime = startUpTime + 24 * 60 * 60 * 1000;
    }

    alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, startUpTime, 24 * 60 * 60 * 1000, pendingIntent);
}