When to call the show function in libgdx?

The show () function is automatically called when this Screen becomes the current screen of the game, and it sets up an input processor. Note that we only have to care about the input specific to this screen. The render () function is called repeatedly (usually 60 frames per second) as long as this screen is the current screen.
Besides, how is the render ( ) method called in libGDX?
The Game base class you inherit from in libGDX is itself an implementation of ApplicationListener, which mandates the render () function. The Game class implements render () by checking to see if the game has a screen, and if it does, it calls that screen's render () method.
Likewise, how is a game class implemented in libGDX? The Game base class you inherit from in libGDX is itself an implementation of ApplicationListener, which mandates the render() function. The Game class implements render() by checking to see if the game has a screen, and if it does, it calls that screen's render() method.
One may also ask, is there a way to show multiple screens in libGDX?
This tutorial introduces the Game and Screen classes, which provide a framework for showing multiple screens. Before we get into the libGDX approach to this problem, it’s worth mentioning that we can actually already handle this with a simpler approach.
Just so, what is the GL20 function in libGDX?
This code uses the Gdx.gl variable to call the glClearColor () function, which sets the background color, and then the glClear () function, which actually draws the background using the color we just set. There are a bunch of other functions in the GL20 class, which are useful if you want to do low-level OpenGL function calls.

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