Android how to make images load from HTTP every few seconds

Question

My images is loaded from HttpURLConnection.

I have 3 images and want to change them every 2 seconds in one ImageView.

For example, image1 -> image2 -> image3 -> image1 -> image2 ...

Current, my code is as below:

Picasso.with(this).load(BASE_URL + "admin/"+image1).fit().centerInside().into(ivImage);


Picasso.with(this).load(BASE_URL + "admin/"+image2).fit().centerInside().into(ivImage);


Picasso.with(this).load(BASE_URL + "admin/"+image3).fit().centerInside().into(ivImage);

Answer 1

Use the following method...

private void repeatTask(int counter) {
        switch (counter) {
            case 0:
                Picasso.with(this).load(BASE_URL + "admin/"+image1).fit().centerInside().into(ivImage);
                break;
            case 1:
                Picasso.with(this).load(BASE_URL + "admin/"+image2).fit().centerInside().into(ivImage);
                break;
            case 2:
                Picasso.with(this).load(BASE_URL + "admin/"+image3).fit().centerInside().into(ivImage);
                break;
            default:
                //not possible
                break;
        }
        final int newCounter = counter + 1;
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                repeatTask(newCounter == 3 ? 0 : newCounter);
            }
        }, 2000);
    }

This will continue to change your image every 2 sec. Call this method like this in your onCreate() method to start the task...

    repeatTask(0);