Libgdx BitmapFont NullPointerException

Question

I created my project with Freetype, tools, and box2d for intellej, and upon trying to run in android studio:

BitmapFont font = new BitmapFont();

it gives me a null pointer exception. I have tried manually putting a font in the assests folder but that did not help. I am able to successfully run the default project (the red background and the picture) but have never successfully ran that line.

Well, calling the default constructor BitmapFont() actually loads a font (Arial-15) in the LibGDX JAR (libgdx.badlogicgames.com/nightlies/docs/api/com/badlogic/gdx/…). So, perhaps your wrapper class is null or something, or maybe you have some weird thing going on with your LibGDX JAR (unlikely)? — VILLAIN bryan
show more code of your class, I think you've some other problem — Abhishek Aryan
It is highly unlikely that this line causes the error. Please post the entire stacktrace and the full method where the error occurs. — Code-Apprentice

Abhishek Aryan Abhishek Aryan · Accepted Answer · 2017-05-14T10:36:07

Possible reason may be you're initialising local BitmapFont instead of global that you're using in render method.

public class MyGdxGame extends Game {

    Texture texture;
    SpriteBatch spriteBatch;

    BitmapFont font;

    @Override
    public void create () {

        BitmapFont font=new BitmapFont();  // You initialise local, global is still Null

        texture=new Texture("badlogic.jpg");
        spriteBatch=new SpriteBatch();
    }

    @Override
    public void render() {
        super.render();

        Gdx.gl.glClearColor(1,1,1,1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

        spriteBatch.begin();
        spriteBatch.draw(texture,100,100);
        font.draw(spriteBatch,"HELLO WORLD",100,100); // Now here NPE
        spriteBatch.end();
    }
}

Default constructor

BitmapFont font=new BitmapFont();

Internally create two FileHandle one for font file com/badlogic/gdx/utils/arial-15.fnt and another one for imageFile com/badlogic/gdx/utils/arial-15.png. I don't think, it throw NPE may be some other Exception.

Libgdx BitmapFont NullPointerException

1 Answers