How to add libgdx to existing project

Question

I have provided an aplication made in android that has a navigation drawer and in it has a list of games. I have to create another game and to put it there. The game that ha

Answer 1

Generally what you want is possible, I reckon your best bet would be to create a new libgdx project with their GUI and to then manually merge the files that are needed.

Answer 2

You can achieve this with these 2 steps:

1. Add LibGDX to your project

On your android gradle file: build.gradle (app or android module)

dependencies {
    ...

    // Add this line, it is recommended to use the latest LibGDX version
    api "com.badlogicgames.gdx:gdx-backend-android:1.9.10"
}

2. Initialize LibGDX for a view or use a LibGDX managed activity

Option 1: Initialize for a view
Since you have a navigation drawer and more code native to android this option fits your needs better. From this question (How to add LibGDX as a sub view in android):

The AndroidApplication class (which extends activity) has a method named initializeForView(ApplicationListener, AndroidApplicationConfiguration) that will return a View you can add to your layout.

-- Matsemann

Also here's documentation on how to implement this (Fragment based LibGDX).

Option 2: Use a managed activity
This is the default/most common use of LibGDX, you will need to change your code as follows:

• Your activity needs to extend Android application:

public class MainActivity extends AndroidApplication {

• Create a class extending Game or ApplicationAdapter:

import com.badlogic.gdx.Game;

public class LibGDXGame extends Game {

    @Override
    public void create() {
        System.out.println("Success!");
    }
}

• Initialize the LibGDX managed activity:

import android.os.Bundle;

import com.badlogic.gdx.backends.android.AndroidApplication;
import com.badlogic.gdx.backends.android.AndroidApplicationConfiguration;

public class MainActivity extends AndroidApplication {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        AndroidApplicationConfiguration config = new AndroidApplicationConfiguration();
        initialize(new LibGDXGame(), config);
    }
}