Android library not working on Lib GDX made project

Question

I used the GDX setup to create my project structure with its library alredy included but after I try call an Intent from Android Library I noticed it could not find the class even the library path. Look that screnshot:

Android-library-error.png

Then I started a new project by Android Studio itself and pretty worked as well:

Intent-working.png

As you can see it looks like gradle problem setting. Then I tried to fix it myself but I could not.

I know to add a library we need to code some dependences even if I remove the GDX dependence it will cause same error. But Android must not need to be added, then I dont know how to add and if will work.

GDX dependence is writen here:

    project(":core") {
apply plugin: "java"


dependencies {
    compile "com.badlogicgames.gdx:gdx:$gdxVersion"
    // If I remove that line it will causes same error
} [...]

I made some comparation between GDX and Android Studio:

GDX made:

project(":android") {
    apply plugin: "android"

    configurations { natives }

    dependencies {

        compile project(":core")
        compile "com.badlogicgames.gdx:gdx-backend-android:$gdxVersion"
        natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-armeabi"
        natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-armeabi-v7a"
        natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-arm64-v8a"
        natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-x86"
        natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-x86_64"
    }
}

Android Studio made:

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:23.3.0'
    compile 'com.android.support:support-v4:23.3.0'
    compile 'com.android.support:design:23.3.0'
    compile 'com.android.support.constraint:constraint-layout:1.0.2'
    testCompile 'junit:junit:4.12'
}

I'm using 3.0.1 Android Studio version.

Kromzem Kromzem · Accepted Answer · 2018-05-25T07:38:34

You are missing one core aspect of libGDX as a cross-platform solution. You can't call platform specific code from your core module, because it does not know anything about a specific platform like Android.

Good to see is that in the core module are no android specific libraries included, and thats whats intendet.

   project(":core") {
    apply plugin: "java"
    dependencies {
    compile "com.badlogicgames.gdx:gdx:$gdxVersion"
   }

As you can see here is that there are includes of libraries specific for the android platform and a include of the code module.

project(":android") {
  apply plugin: "android"

  configurations { natives }

  dependencies {

    compile project(":core")
    compile "com.badlogicgames.gdx:gdx-backend-android:$gdxVersion"
    natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-armeabi"
    natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-armeabi-v7a"
    natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-arm64-v8a"
    natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-x86"
    natives "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-x86_64"
  }
}

That means:
- Android has all access to everything in the core module and within its own module
- Core has only access to everything within its own module, nothing above

Click here or here to inform yourself about how to deal with your situation.

Android library not working on Lib GDX made project

1 Answers