android - AlarmManager setEexact() 不工作

Question

我有两个 AlarmManager 计划每天 23:59 触发一次，另一个同时触发，但每周触发一次。

下面是执行此操作的两个函数:

private fun midnightTimeClearCache(dataType: DataType, requestCode: Int) {
        val calendar = Calendar.getInstance()
        calendar.timeInMillis = System.currentTimeMillis()
        calendar.set(Calendar.HOUR_OF_DAY, 23)
        calendar.set(Calendar.MINUTE, 59)
        val intent = Intent(context, ClearDataReceiver::class.java)
        intent.putExtra(ClearDataReceiver.DATA_TYPE_EXTRA, dataType.name)
        val pendingIntent = PendingIntent.getBroadcast(context, requestCode, intent, PendingIntent.FLAG_UPDATE_CURRENT)
        alarmManager.setExact(AlarmManager.RTC_WAKEUP, calendar.timeInMillis, pendingIntent)

    }

    private fun weekTimeClearCache(dataType: DataType, requestCode: Int) {
        val calendar = Calendar.getInstance()
        calendar.timeInMillis = System.currentTimeMillis()
        calendar.set(Calendar.HOUR_OF_DAY, 23)
        calendar.set(Calendar.MINUTE, 59)
        var i: Int = calendar.get(Calendar.WEEK_OF_MONTH)
        calendar.set(Calendar.WEEK_OF_MONTH, i++)
        val intent = Intent(context, ClearDataReceiver::class.java)
        intent.putExtra(ClearDataReceiver.DATA_TYPE_EXTRA, dataType.name)
        val pendingIntent = PendingIntent.getBroadcast(context, requestCode, intent, PendingIntent.FLAG_UPDATE_CURRENT)
        alarmManager.setExact(AlarmManager.RTC_WAKEUP, calendar.timeInMillis, pendingIntent)
    }

下面是作为上述未决 Intent 的一部分应该被解雇的接收者

class ClearDataReceiver : DaggerBroadcastReceiver() {
 override fun onReceive(context: Context?, intent: Intent?) {
        super.onReceive(context, intent)
        var bundle = intent!!.extras
        val dataTypeString = bundle.getString(DATA_TYPE_EXTRA)
        val dataType = DataType.valueOf(dataTypeString)
        Log.d("JJJ", "clearing data for " + dataTypeString)
        when (dataType) {
            DataType.CUSTOMER_DETAILS -> {
                storage.clearDetails()
                storageClearSchedular.setCustomerDetailsClear()
            }
            DataType.CUSTOMER_PIC -> {
                storage.clearPic()
                storageClearSchedular.setPicClear()
            }
}

这是我的 list :

还有启动接收器，这样我就可以重置警报管理器

override fun onReceive(context: Context?, intent: Intent?) {
        Log.d("JJJ", "onReceive")

        storageClearSchedular = StorageClearSchedular(context!!, context!!.getSystemService(Context.ALARM_SERVICE) as AlarmManager)
        storageClearSchedular.setAllSchedulars()

当我设置上述警报管理器时间表，然后在我 sleep 前从后台终止应用程序时，我再次加载该应用程序，发现它没有执行我的广播接收器(没有日志和数据的详细信息已清除)。

应该发生的是它应该在我设置的时间或每周一次执行每个数据，然后在它被触发后再次设置它，但它似乎根本不起作用。

我首先尝试了 setRepeating，但它没有作为 im 目标设备从 api 19 及更高版本工作

我错过了什么？

Answer 1

对于 19 以上的 api 版本，请使用此代码

if (Build.VERSION.SDK_INT < 19) {


           alarmManager.set(AlarmManager.RTC,
                calendar.getTimeInMillis(), pendingIntent);
             }
        } else if (Build.VERSION.SDK_INT >= 19 && Build.VERSION.SDK_INT <= 22) {
            alarmManager.setExact(AlarmManager.RTC,
                    calendar.timeInMillis, pendingIntent)
        } else if (Build.VERSION.SDK_INT >= 23) {
            alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC,
                    calendar.timeInMillis, pendingIntent)
        }

对于每日闹钟，您可以查看情况。此示例将每天上午 9 点设置闹钟。此外，您可能需要在设备重新启动或启动时重新设置警报，因为一旦设备断电或重新启动，所有警报都会被取消。

Calendar calendar = Calendar.getInstance()
        // set selected time from timepicker to calendar
        calendar.setTimeInMillis(System.currentTimeMillis());

        // if it's after or equal 9 am schedule for next day
        if (Calendar.getInstance().get(Calendar.HOUR_OF_DAY) >= 9) {
            Log.e("", "Alarm will schedule for next day!");
            calendar.add(Calendar.DAY_OF_YEAR, 1); // add, not set!
        }
        else{
            Log.e("", "Alarm will schedule for today!");
        }
        calendar.set(Calendar.HOUR_OF_DAY, 9);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);