How can I make my button do something when clicked?

Question

I'm trying to create a game with libGDX in Android Studio, and I am struggling with my code to add a command to the program to do something when I press the button.

I have added an ImageButton, but now I struggle to get it to do something when I click on it.

Here's my code:

 bplay.addListener( new ClickListener(){
        public void clicked(InputEvent event, float x, float y){
            batch.begin();
            batch.draw( splash, 0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight() );
            batch.end();
        }
    });

Answer 1

You need to draw stuff in the rendering loop. Try doing the following:

// On the class level
boolean drawImage = false;

// When setting the listener
bplay.addListener( new ClickListener(){
    public void clicked(InputEvent event, float x, float y){
        drawImage = true;
    }
});

// In the render method
if (drawImage) {
    batch.begin();
    batch.draw( splash, 0, 0, Gdx.graphics.getWidth(), 
    Gdx.graphics.getHeight() );
    batch.end();
    drawImage = false;
}