android - 在 Android 中每周一安排通知

Question

想要安排一个通知，该通知将在每周一的上午 11 点触发。为此，我正在使用 firebase 作业调度程序。这是我已经实现的代码 fragment ，但这不起作用。

    Calendar currentDate = Calendar.getInstance();
    while (currentDate.get(Calendar.DAY_OF_WEEK) != Calendar.MONDAY) {
        currentDate.add(Calendar.DATE, 1);
    }
    currentDate.set(Calendar.HOUR_OF_DAY, 11);
    currentDate.set(Calendar.MINUTE, 0);
    currentDate.set(Calendar.SECOND, 0);
    currentDate.set(Calendar.MILLISECOND, 0);
    FirebaseJobDispatcher dispatcher = new FirebaseJobDispatcher(new GooglePlayDriver(SplashScreen.this));

    Job myJob = dispatcher.newJobBuilder()
            .setService(ScheduledNotificationService.class)
            .setTag(dispatcherTag)
            .setRecurring(true)
            .setLifetime(Lifetime.FOREVER)
            .setTrigger(Trigger.executionWindow(Math.round(currentDate.getTime().getTime() / 1000), Math.round(currentDate.getTime().getTime() / 1000) + 60))
            .setReplaceCurrent(false)
            .setRetryStrategy(RetryStrategy.DEFAULT_EXPONENTIAL)
            .build();

    dispatcher.mustSchedule(myJob);

ScheduledNotificationService.class 扩展了 jobservice 但永远不会调用 onStartJob。

这里有什么问题？

除了使用 firebase 作业调度程序之外，还有更好/正确的方法吗？

Answer 1

FirebaseJobDispatcher 并没有真正的帮助，所以我改用了 AlarmManager，它工作得很好。这是我实现它的方法，

    Calendar currentDate = Calendar.getInstance();
    while (currentDate.get(Calendar.DAY_OF_WEEK) != Calendar.MONDAY) {
        currentDate.add(Calendar.DATE, 1);
    }
    currentDate.set(Calendar.HOUR_OF_DAY, hour);
    currentDate.set(Calendar.MINUTE, minute);
    currentDate.set(Calendar.SECOND, 0);
    currentDate.set(Calendar.MILLISECOND, 0);

    Intent intent = new Intent(mContext, AlarmReceiver.class);
    intent.putExtra("extra info", "if needed");
    PendingIntent pendingIntent = PendingIntent.getBroadcast(mContext, RequestCode, intent, 0);
    AlarmManager am = (AlarmManager) mContext.getSystemService(ALARM_SERVICE);
    am.setRepeating(am.RTC_WAKEUP, currentDate.getTimeInMillis(), am.INTERVAL_DAY * 7, pendingIntent);

AlarmReceiver 类执行任何操作

 public class AlarmReceiver extends BroadcastReceiver {

    private Context mContext;

    @Override
    public void onReceive(Context context, Intent data) {
        mContext = context;
        //YOUR STUFF 
    }
}

此计划在用户重启设备后停止工作。重启完成后不要忘记再次设置。为此，将其添加到 AndroidManifest 中并再次安排警报。

    <receiver
        android:name=".AlarmManager.AlarmBootReceiver"
        android:enabled="true"
        android:exported="true">
        <intent-filter>
            <action android:name="android.intent.action.BOOT_COMPLETED" />
        </intent-filter>
    </receiver>

在 AlarmBootReceiver 类中再次安排警报。