block实现场景切换

loadingLayer=[LoadingLayer node]; 谛力泰克网 ：app定制 http://www.dilitech.com [self addChild:loadingLayer]; dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0); dispatch_async(queue, ^{ //声明一个Pool来自动管理指针 NSAutoreleasePool *autoreleasepool = [[NSAutoreleasePool alloc] init]; //加锁保护，并保证与Cocos2d本身的异步加载函数本身不冲突 //也就是保护ShareGroup不被同时修改 // [[CCTextureCache sharedTextureCache].contextLock lock]; //auxGLcontext必须是static // if( auxGLcontext == nil ) { //新建一个EAGLContext 然后与已经生成与使用的OpenGL公用一个ShareGroup auxGLcontext = [[EAGLContext alloc]initWithAPI:kEAGLRenderingAPIOpenGLES1 sharegroup:[[[[CCDirector sharedDirector] openGLView] context] sharegroup]]; //检查是否 if( ! auxGLcontext ) CCLOG(@"cocos2d: TextureCache: Could not create EAGL context"); } CCScene *scene; //设置Context,拥有修改权利,接下来我们就可以正常的使用我们生成我们自己的Scene了 if( [EAGLContext setCurrentContext:auxGLcontext] ) { //初始化 scene = [LevelController scene]; [[CCDirector sharedDirector] replaceScene:scene]; } //回到主线程,保留并解锁,然后等等主线程接收方响应并开始切换场景 dispatch_async(dispatch_get_main_queue(), ^{ //防止指针丢失 // nextScene = [scene retain]; //lock用来判断scene是否生存完 // lock = NO; }); //恢复 [EAGLContext setCurrentContext:nil]; // [[CCTextureCache sharedTextureCache].contextLock unlock]; [autoreleasepool release]; }); 复制代码 如果用下列常规方式回出现场景图片与动画均显示不了的问 loadingLayer=[LoadingLayer node]; [self addChild:loadingLayer]; dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0); dispatch_async(queue, ^{ CCScene *levelScene = [LevelController scene]; [[CCDirector sharedDirector] replaceScene:levelScene]; dispatch_async(dispatch_get_main_queue(), ^{ [loadingLayer removeFromParentAndCleanup:YES]; }); }); 复制代码 文章出处：谛力泰克网 app开发 http://www.dilitech.com