How to show a view for 3 seconds, and then hide it?

Question

I tried with threads, but android throws "CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.".

So how can I wait 3 seconds and then hide the view, letting the GUI responsive?

--

A Timer uses another thread either, so it will not solve..

Answer 1

You can use runOnUiThread method to access UI thread.

Answer 2

Spawn a separate thread that sleeps for 3 seconds then call runOnUiThread to hide the view.

Thread thread = new Thread() {
    @Override
    public void run() {
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
        }

        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                // Do some stuff
            }
        });
    }
};