[Android/안드로이드] Background(백그라운드) Service Thread 설정

Android Background Service(Thread) 설정해주기.

따로 gradle에 설정해줄 것이 하나 없이 코드만 입력해주시면 끝납니다!

ServiceThread.java

import android.os.Handler;

public class ServiceThread extends Thread {
    Handler handler;
    boolean isRun = true;

    public ServiceThread(Handler handler) {
        this.handler = handler;
    }
    public void stopForever() {
        synchronized (this) {
            this.isRun = false;
        }
    }
    public void run() {
        //반복적으로 수행할 작업을 한다.
        while (isRun) {
            handler.sendEmptyMessage( 0 );//쓰레드에 있는 핸들러에게 메세지를 보냄
            try {
                Thread.sleep(3000000); //30분씩 돈다. 1000=1초
            } catch (Exception e) {
            }
        }
    }
}

MyService.java

public class MyService extends Service {
    NotificationManager Notifi_M;
    ServiceThread thread;

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Notifi_M = (NotificationManager) getSystemService( Context.NOTIFICATION_SERVICE );
        myServiceHandler handler = new myServiceHandler();
        thread = new ServiceThread( handler );
        thread.stopForever();
        return START_STICKY;
    }

    //서비스가 종료될 때 할 작업
    public void onDestroy() {
        myServiceHandler handler = new myServiceHandler();
        thread = new ServiceThread( handler );
        thread.start();
    }


    public class myServiceHandler extends Handler {
        @Override
        public void handleMessage(android.os.Message msg) {
            NotificationManager notificationManager = (NotificationManager) getSystemService( Context.NOTIFICATION_SERVICE );
            Intent intent = new Intent( MyService.this, MainActivity.class );
            intent.addFlags( Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_SINGLE_TOP );
            PendingIntent pendingIntent = PendingIntent.getActivity( MyService.this, 0, intent, PendingIntent.FLAG_ONE_SHOT );
            Uri soundUri = RingtoneManager.getDefaultUri( RingtoneManager.TYPE_NOTIFICATION );

            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
                @SuppressLint("WrongConstant")
                NotificationChannel notificationChannel = new NotificationChannel( "my_notification", "n_channel", NotificationManager.IMPORTANCE_MAX );
                notificationChannel.setDescription( "description" );
                notificationChannel.setName( "Channel Name" );
                assert notificationManager != null;
                notificationManager.createNotificationChannel( notificationChannel );
            }
            NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder( MyService.this )
                    .setSmallIcon( R.drawable.drawable )
                    .setLargeIcon( BitmapFactory.decodeResource( getResources(), R.drawable.drawable ) )
                    .setContentTitle( "Notification Title" )
                    .setContentText( "Notification Message" )
                    .setAutoCancel( true )
                    .setSound( soundUri )
                    .setContentIntent( pendingIntent )
                    .setDefaults( Notification.DEFAULT_ALL )
                    .setOnlyAlertOnce( true )
                    .setChannelId( "my_notification" )
                    .setColor( Color.parseColor( "#ffffff" ) );
            //.setProgress(100,50,false);
            assert notificationManager != null;
            int m = (int) ((new Date().getTime() / 1000L) % Integer.MAX_VALUE);
            Calendar cal = Calendar.getInstance();
            int hour = cal.get( Calendar.HOUR_OF_DAY );
            if (hour == 07) {
                notificationManager.notify( m, notificationBuilder.build() );
            } else if (hour == 18) {
                notificationManager.notify( m, notificationBuilder.build() );
            }
        }
    }
}

MyService.java에서

저같은 경우는 Calendar를 사용해서

오전 7시 혹은 오후 6시(18시)일 때 Notification 주도록 해주었습니다!

이러면 앱을 끈 상태여도 Background Service로 Thread가 돌아서 Notification이 오게됩니다!

Firebase push를 사용해도 좋지만, static한 정해진 Notification은 이런게 좋을 것 같습니다!~