我想在每天早上 8:00 显示通知

Question

我正在尝试使用警报管理器在特定时间（每天上午 8:00）向用户发送通知。 但我的代码不正确请帮我显示通知

我的 MainActivity

  @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    AlarmController al=new AlarmController(this);
    al.StartAlarm();

}

我的闹钟控制器

  public class AlarmController {

    private Context m_Context;
    private AlarmManager mgr;
    private static final long PERIOD = 1000 * 30;

    public AlarmController(Context context){

        m_Context = context;
        mgr = (AlarmManager)m_Context.getSystemService(Context.ALARM_SERVICE);
    }

    public void StartAlarm(){



        Intent i = new Intent(m_Context, OnAlarmReceiver.class);
        Calendar calendar = Calendar.getInstance();
        calendar.setTimeInMillis(System.currentTimeMillis());
        calendar.set(Calendar.HOUR_OF_DAY,8);

        PendingIntent pi=PendingIntent.getBroadcast(m_Context, 0,i, PendingIntent.FLAG_UPDATE_CURRENT);
        mgr.setInexactRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(),
                AlarmManager.INTERVAL_DAY, pi);



        Log.i("AlarmController", "StartAlarm");
    }

    public void StopAlarm(){
        Intent i = new Intent(m_Context, OnAlarmReceiver.class);
        PendingIntent pi=PendingIntent.getBroadcast(m_Context, 0,i, PendingIntent.FLAG_UPDATE_CURRENT);
        mgr.cancel(pi);

        Log.i("AlarmController", "StopAlarm");
    }
}

和 OnAlarmReceiver

public class OnAlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
context.startService(new Intent(context, AppService.class));

} }

AppService

 public int onStartCommand(Intent intent, int flags, int startId) {
    Log.i(TAG, "start job");

    NotificationCompat.Builder mBuilder =
            new NotificationCompat.Builder(this)
                    .setSmallIcon(R.mipmap.ic_launcher)
                    .setContentTitle("My notification")
                    .setContentText("از اپ سرویس!");

    int mNotificationId = 001;
    NotificationManager mNotifyMgr =
            (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

    mNotifyMgr.notify(mNotificationId, mBuilder.build());
    Log.i(TAG, "stop job");
    return START_STICKY;
}

Answer 1

alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmIntent = new Intent(context of current file, AlarmReceiver1.class);

    pendingIntent = PendingIntent.getBroadcast(Menu.this, 0, alarmIntent,PendingIntent.FLAG_UPDATE_CURRENT);
    alarmIntent.setData((Uri.parse("custom://"+System.currentTimeMillis())));
    alarmManager.cancel(pendingIntent);

    Calendar alarmStartTime = Calendar.getInstance();
    Calendar now = Calendar.getInstance();
    alarmStartTime.set(Calendar.HOUR_OF_DAY, 8);
    alarmStartTime.set(Calendar.MINUTE, 00);
    alarmStartTime.set(Calendar.SECOND, 0);
    if (now.after(alarmStartTime)) {
        Log.d("Hey","Added a day");
        alarmStartTime.add(Calendar.DATE, 1);
    }

     alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, alarmStartTime.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pendingIntent);
     Log.d("Alarm","Alarms set for everyday 8 am.");

来到广播接收器类。您需要在清单中注册广播接收器。这将导致您接收时钟事件。 覆盖此广播接收器的 onReceive 方法并在那里自己发出通知或制作单独的通知构建服务并在那里构建和显示您的通知。

清单代码sn-p：

<receiver android:name="AlarmReceiver1"  android:enabled="true">

广播接收代码sn-p：

public class AlarmReceiver1 extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
      Intent service1 = new Intent(context, NotificationService1.class);
  service1.setData((Uri.parse("custom://"+System.currentTimeMillis())));
              context.startService(service1);
}

通知构建服务代码sn-p：

public class NotificationService1 extends IntentService{

    private NotificationManager notificationManager;
    private PendingIntent pendingIntent;
    private static int NOTIFICATION_ID = 1;
    Notification notification;
@Override
    protected void onHandleIntent(Intent intent) {
ontext context = this.getApplicationContext();
           notificationManager = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
 Intent mIntent = new Intent(this, Activity to be opened after clicking on the notif);
            Bundle bundle = new Bundle();
            bundle.putString("test", "test");
            mIntent.putExtras(bundle);
            pendingIntent = PendingIntent.getActivity(context, 0, mIntent, PendingIntent.FLAG_UPDATE_CURRENT);    

            Resources res = this.getResources();
            NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
            Uri soundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_ALARM);
            notification = new NotificationCompat.Builder(this)
                        .setContentIntent(pendingIntent)
                        .setSmallIcon(R.drawable.ic_launcher)
                        .setLargeIcon(BitmapFactory.decodeResource(res, R.drawable.ic_launcher))
                        .setTicker("ticker value")
                        .setAutoCancel(true)
                        .setPriority(8)
                        .setSound(soundUri)
                        .setContentTitle("Notif title")
                        .setContentText("Text").build();
            notification.flags |= Notification.FLAG_AUTO_CANCEL | Notification.FLAG_SHOW_LIGHTS;
            notification.defaults |= Notification.DEFAULT_SOUND | Notification.DEFAULT_VIBRATE;
            notification.ledARGB = 0xFFFFA500;
            notification.ledOnMS = 800;
            notification.ledOffMS = 1000;
            notificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
            notificationManager.notify(NOTIFICATION_ID, notification);
            Log.i("notif","Notifications sent.");

    }

}

Answer 2

试试这组代码，你的服务永远不会停止它对我有用。 “mgr.setInexactReapeating”一旦启动就无法在许多棒棒糖和棉花糖设备中工作，然后失去对服务的控制，这将对您有所帮助。

if (android.os.Build.VERSION.SDK_INT >= 23) {
        piLR = PendingIntent.getBroadcast(context, 0, intentLR,
                PendingIntent.FLAG_UPDATE_CURRENT);
        amLR.setAndAllowWhileIdle(AlarmManager.ELAPSED_REALTIME_WAKEUP,
                interval, piLR);
    } else if (android.os.Build.VERSION.SDK_INT >= 19
            && android.os.Build.VERSION.SDK_INT < 23) {
        piLR = PendingIntent.getBroadcast(context, 0, intentLR,
                PendingIntent.FLAG_UPDATE_CURRENT);
        amLR.setInexactRepeating(AlarmManager.RTC_WAKEUP,
                System.currentTimeMillis(), interval, piLR);
    } else {
        amLR.setRepeating(AlarmManager.RTC_WAKEUP,
                System.currentTimeMillis(), interval, piLR);
    }