[SOLVED] "package com.jme3.app does not exist"

Troubleshooting android
1

I am writing an Android game, but when building i get this error. I am using IntelliJ and have all libraries installed via Gradle, the IDE sees them, but compiler doesn’t. Any help appreciated!

2

Are you able to provide a simple example application? Including the build.gradle files (Did you start from the https://start.jmonkeyengine.org? Not that you need to, but a useful reference)

3

No, i did not use the initializer. I took the code from https://github.com/Electrostat-Lab/jme3-Simple-Examples.git and changed the package name.

MainActivity.java

package com.example.game;

import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.os.PersistableBundle;
import android.view.Menu;

import androidx.annotation.Nullable;

import com.jme3.app.AndroidHarness;

import java.util.Objects;

/**
 * <b>NB: Please Open this example <u>root module</u> using Android Studio; because android build scripts are different from java builds.</b>
 * <br>
 * An Example Class that demonstrates the usage of #{@link AndroidHarness} to render a jme game inside android.
 * <br>
 * Steps :
 * <ol>
 * <li>Create a class extending #{@link AndroidHarness} as your #{@link android.app.Activity} class that holds the #{@link android.opengl.GLSurfaceView}
 * with its #{@link android.opengl.GLSurfaceView.Renderer} to render a jme game</li>
 * <li>Specify the directory of your game class package inside #{@link AndroidHarness#appClass} using #{@link Class#getName()}</li>
 * <li>That's it, and magic comes into play :-)</li>
 * </ol>
 *
 * @author pavl_g
 */
public final class MainActivity extends AndroidHarness {
    public MainActivity() {
        /*get the jme class dir*/
        appClass = Objects.requireNonNull(MyGame.class.getName());
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        System.err.println("OnDestroy invoked");
    }
}

MyGame.java

package com.example.game;

import com.jme3.app.SimpleApplication;
import com.jme3.asset.AssetKey;
import com.jme3.material.Material;
import com.jme3.math.ColorRGBA;
import com.jme3.scene.Geometry;
import com.jme3.scene.debug.WireSphere;

/**
 * <b>Your JmeGame class</b>
 *
 * @author pavl_g
 */
public final class MyGame extends SimpleApplication {
    @Override
    public void simpleInitApp() {
        final WireSphere wireSphere = new WireSphere(50);
        final Geometry geometry = new Geometry("wireSphere", wireSphere);
        geometry.setLocalScale(0.05f);
        final Material material = new Material(assetManager.loadAsset(new AssetKey<>("Common/MatDefs/Misc/Unshaded.j3md")));
        material.setColor("Color", ColorRGBA.randomColor().mult(2f));
        geometry.setMaterial(material);
        rootNode.attachChild(geometry);
    }
}

build.gradle.kts

plugins {
    java
    id("com.android.application") version "8.2.0" apply false
}


dependencies {
    implementation("org.jmonkeyengine:jme3-core:3.6.1-stable")
    implementation("org.jmonkeyengine:jme3-effects:3.6.1-stable")
    implementation("org.jmonkeyengine:jme3-android-native:3.6.1-stable")
}
4

Solved! The problem occured because dependencies were declared in the global build file instead of a module-specific. Thank you, @richtea, for reminding about jMonkey Initializer!

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