final TMXLoader tmxLoader = new TMXLoader(mContext, mContext.getEngine().getTextureManager(), TextureOptions.BILINEAR_PREMULTIPLYALPHA);
mTMXTiledMap = tmxLoader.loadFromAsset(mContext, "background_tile.tmx");
final TMXLayer tmxLayer = this.mTMXTiledMap.getTMXLayers().get(0);
scene.attachChild(tmxLayer);