Question

我尝试设置Android应用。这必须在周五下午15.00 /下午3点每周给我证明。此时每天设置通知都没有问题，但即使不是在特定的日期和时间。

我希望你找到我的错误并给我一些提示。这是我的代码：

pip3 install numpy

谢谢你

添

Answer 1

对于重复警报（setRepeating，setInexactRepeating），您应该在将来设置时间（如果您指定的触发时间是过去的，则警报立即触发）。因此，如果您在每个星期五首先需要警报，那么您应该在下周五计算：

private void alarmMethod() {
    Intent myIntent = new Intent(this , NotifyService.class);
    AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
    pendingIntent = PendingIntent.getService(this, 0, myIntent, 0);

    // get current time
    Calendar currentTime = Calendar.getInstance();  

    // setup time for alarm
    Calendar alarmTime = Calendar.getInstance();

    // set time-part of alarm
    alarmTime.set(Calendar.SECOND, 0);
    alarmTime.set(Calendar.MINUTE, 0);
    alarmTime.set(Calendar.HOUR, 3);    
    alarmTime.set(Calendar.AM_PM, Calendar.PM);
    alarmTime.set(Calendar.DAY_OF_WEEK, Calendar.Friday);

    // check if it in the future
    if (currentTime.getTimeInMillis() <  alarmTime.getTimeInMillis()) {
        // nothing to do - time of alarm in the future
    } else {            
        int dayDiffBetweenClosestFriday = (7 + alarmaTime.get(Calendar.DAY_OF_WEEK) - calendar.get(Calendar.DAY_OF_WEEK)) % 7;

        if (dayDiffBetweenClosestFriday == 0) {
            // Today is Friday, but current time after 3pm, so schedule for the next Friday
            dayDiffBetweenClosestFriday = 7;
        }

        alarmTime.add(Calendar.DAY_OF_MONTH, dayDiffBetweenClosestFriday);
    }

    // calculate interval (7 days) in ms
    int interval = 1000 * 60 * 60 * 24 * 7;

    alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, alarmTime.getTimeInMillis(), interval, pendingIntent);
}

如果用户重新启动设备，您还应该自动重启重复警报（默认情况下，当设备关闭时取消所有警报）：

在应用程序的清单中设置 RECEIVE_BOOT_COMPLETED 权限
实施BroadcastReceiver以接收广播 android.intent.action.BOOT_COMPLETED
将接收器添加到应用程序的清单文件中，其中包含一个过滤 ACTION_BOOT_COMPLETED 操作的意图过滤器

每周安卓通知

1 个答案: