Using Rajawali (and AndroidAnnotations) to play 360 video.

MainActivity.java

import android.app.Activity;
import android.media.MediaPlayer;

import org.androidannotations.annotations.AfterViews;
import org.androidannotations.annotations.Bean;
import org.androidannotations.annotations.EActivity;
import org.androidannotations.annotations.ViewById;
import org.rajawali3d.view.SurfaceView;

import java.io.IOException;

@EActivity(R.layout.activity_main)
public class MainActivity extends Activity {

    @ViewById
    SurfaceView rajawaliView;

    @Bean
    MyRenderer renderer;

    @AfterViews
    void init() {
        rajawaliView.setSurfaceRenderer(renderer);
    }

    MediaPlayer mediaPlayer;

    @Override
    protected void onResume() {
        super.onResume();
        mediaPlayer = new MediaPlayer();
        
        // This is just a simple example.
        // I recommend to load resource in background thread in production.
        try {
            mediaPlayer.setDataSource("/sdcard/video.mp4"); // video file path
            mediaPlayer.prepare();
        } catch (IOException e) {
            mediaPlayer.release();
            throw new RuntimeException(e);
        }
    }

    @Override
    protected void onPause() {
        super.onPause();
        mediaPlayer.release();
        mediaPlayer = null;
    }
}

MyRenderer.java

import android.content.Context;
import android.view.MotionEvent;

import org.androidannotations.annotations.EBean;
import org.androidannotations.annotations.RootContext;
import org.rajawali3d.materials.textures.ATexture;
import org.rajawali3d.renderer.Renderer;

@EBean
class MyRenderer extends org.rajawali3d.renderer.Renderer {

    @RootContext
    MainActivity activity;

    MyRenderer(Context context) {
        super(context);
    }

    @Override
    protected void initScene() {
        VRSphere vrSphere = new VRSphere();
        getCurrentScene().addChild(vrSphere);
        
        // Start playing (I put this to simple description but I recommend that you should put this to right place.)
        try {
            vrSphere.bindMediaPlayer(activity.mediaPlayer);
            activity.mediaPlayer.start();
        } catch (ATexture.TextureException e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public void onOffsetsChanged(float xOffset, float yOffset, float xOffsetStep, float yOffsetStep, int xPixelOffset, int yPixelOffset) {
    }

    @Override
    public void onTouchEvent(MotionEvent event) {
    }
}

VRSphere.java

import android.media.MediaPlayer;

import org.rajawali3d.cameras.Camera;
import org.rajawali3d.materials.Material;
import org.rajawali3d.materials.textures.ATexture;
import org.rajawali3d.materials.textures.StreamingTexture;
import org.rajawali3d.math.Matrix4;
import org.rajawali3d.math.vector.Vector3;
import org.rajawali3d.primitives.Sphere;

public class VRSphere extends Sphere {

    private StreamingTexture streamingTexture;

    public VRSphere() {
        super(100, 128, 64);

        setRotation(Vector3.Axis.Y, -90);
        setScale(1, 1, -1);
        setColor(0);
        setMaterial(new Material());
    }

    public void bindMediaPlayer(MediaPlayer mp) throws ATexture.TextureException {

        if (streamingTexture != null) {
            streamingTexture.updateMediaPlayer(mp);
        } else {
            streamingTexture = new StreamingTexture("video", mp);
            getMaterial().addTexture(streamingTexture);
        }
    }

    @Override
    public void render(Camera camera, Matrix4 vpMatrix, Matrix4 projMatrix, Matrix4 vMatrix, Matrix4 parentMatrix, Material sceneMaterial) {
        if (streamingTexture != null) {
            streamingTexture.update();
        }
        super.render(camera, vpMatrix, projMatrix, vMatrix, parentMatrix, sceneMaterial);
    }
}

I don't like "org.androidannotations.annotations." But you still save my day.... No. you save my year.