applicationDidFinishLaunching里怎么加入一个loading的层?

bool AppDelegate::applicationDidFinishLaunching() {
//在这里加加载页面
auto director = Director::getInstance();
auto glview = director->getOpenGLView();
if(!glview) {
glview = GLView::create(“My Game”);
glview = GLView::createWithRect(“My Game”,Rect(0,0,320,480));
director->setOpenGLView(glview);
}

director->setAnimationInterval(1.0 / 60);

auto scene = GameLayer::createScene();//这里创建场景要等很久
director->runWithScene(scene);
director->setDisplayStats(false);//关闭左下角的状态显示
//移除加载页面

return true;
}

任何界面都是要有一个场景来显示的,你想显示一个进度条UI,就一定要有一个放置的场景

也就是说要替换场景?