Can I Make A Background Service That runs at certain intervals of time even after closing the Application

问题

I am Referring this Application https://github.com/hzitoun/android-camera2-secret-picture-taker. In this Application there are two classes(APictureCapturingService.java & PictureCapturingServiceImpl.java) that takes pictures without preview can these two classes be converted to Background Service that runs always never dies.

Is this possible to have camera capturing process as a background service if yes how to proceed?

回答1:

I don't know how you are taking picture in your activity but i can guide you to run your app in background even your close your app and you can able to run your camera code in every second..

public class SampleService extends Service {

public SampleService() {
}


@Override
public IBinder onBind(Intent intent) {
    // TODO: Return the communication channel to the service.
    return null;
}

@Override
public int onStartCommand(final Intent inten, int flags, int startId) {

    Timer timer = new Timer();
    timer.scheduleAtFixedRate(new TimerTask() {
        @Override
        public void run() {

            Handler handler = new Handler(Looper.getMainLooper());
            handler.post(new Runnable() {
                @Override
                public void run() {


                        // Make use your method here..

                }
            });
        }
    }, 5000, 2000);

    return super.onStartCommand(inten, flags, startId);
}



@Override
public void onCreate() {
    super.onCreate();
}}

And you need to start the service form activity..

startService(new Intent(this, SampleService.class));

I have used this for monitoring the foreground app it will work..

来源：https://stackoverflow.com/questions/47151213/can-i-make-a-background-service-that-runs-at-certain-intervals-of-time-even-afte