How to getContext() in LIBGDX android app

Question

I need to get the Context of my app but in my main Class extends from Game so I can not extends from Activity. Does anybody know how to do it?

Thank you!

Answer 1

Interfacing is the way to go since you can't access Android specific code from Core module.

Step 1: Create the interface (CORE MODULE)

public interface MyInterface {

    void manipulateContext();

    void manipulateContextWithExtraParams(String example, int example2);
}

Step 2: Implement the interface (ANDROID MODULE)

import android.content.Context;

public class InterfaceImplementation implements MyInterface {

    private Context context;

    public InterfaceImplementation(Context context) {
        // Store the context for later use
        this.context = context;
    }

    @Override
    public void manipulateContext() {
        // Do something with the context, this is called on the core module
        System.out.println(context);
    }

    @Override
    public void manipulateContextWithExtraParams(String example, int example2) {
        if (example2 == 1) {
            System.out.println(example + context);
        } else {
            System.out.println(example);
        }
    }
}

Step 3: Send the implemented interface your game (ANDROID MODULE)

import android.os.Bundle;

import com.badlogic.gdx.backends.android.AndroidApplication;
import com.badlogic.gdx.backends.android.AndroidApplicationConfiguration;
import com.frontanilla.helping.getcontext.InterfaceImplementation;
import com.frontanilla.helping.getcontext.MyGame;

public class AndroidLauncher extends AndroidApplication {
    @Override
    protected void onCreate (Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        AndroidApplicationConfiguration config = new AndroidApplicationConfiguration();

        InterfaceImplementation interfaceImplementation = new InterfaceImplementation(this);

        // Here we send the implementation to our Game in Core module
        initialize(new MyGame(interfaceImplementation), config);
    }
}

Step 4: Store and use the methods you defined on your interface (CORE MODULE)

import com.badlogic.gdx.Game;

public class MyGame extends Game {

    private MyInterface myInterface;

    public MyGame(MyInterface myInterface) {
        // Store for later use
        this.myInterface = myInterface;
    }

    @Override
    public void create() {
        // Example of manipulating the Android Context indirectly from Core module
        myInterface.manipulateContext();
        myInterface.manipulateContextWithExtraParams("Hello", 2);
    }
}

As you can see, you will not be manipulating the Context from the core module directly, instead, place that logic on the InterfaceImplementation class