Question

I have a litle problem in my Android project.

I would like to do something every 1 second but the problem is that I have something else to do between those 1sec.

I tried to make a while (true) loop with wait(1000) inside but the problem is that this loop blocks all other instructions.

What would be a workaround / solution for this?

Answer 1

I would consider a threading scenario. In case you are working with UI updates, you can use postDelayed so you can update your UI from withing the Runable. You can call the Runable from within a Runable, too.

View.postDelayed(new Runnable() {
            public void run() {
                // do work
            }
        }, 1000);

Edit: Based on your comment, this is how you can implement calling back your function repeatedly.

public void PrendrePhoto() {
        String nom = "CameraPhoto";
        double x;
        camera = Camera.open();
        capteurBdd = new CapteursBDD(null);
        while (true) {
            camera.takePicture(null, null, null);
            x = 10;
            ValeursCapteur capteur = new ValeursCapteur(nom, x, 0, 0);
            capteurBdd.insertValeursCapteur(capteur);
            Log.i(null, "GPS = " + x);
            try {
                findViewById(R.id.mainView).postDelayed(predrePhotoRunnable, 1000);
            } catch (InterruptedException ex) {
            }
        }
    }

    private Runnable predrePhotoRunnable = new Runnable() {
        public void run() {
            PrendrePhoto();
        }
    };