Cocos2d iphone Cocos2d 3.0的AppController替代方案

这是我的Cocos2d 2.0通话。在cocos2d3.0中有什么替代方案

    AppController *app = (AppController*) [[UIApplication sharedApplication] delegate];

    [[app navController] presentModalViewController:achivementViewController animated:YES];

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在Cocos2d 3.0中，使用CCAppDelegate而不是AppController：

CCAppDelegate *app = (CCAppDelegate*) [[UIApplication sharedApplication] delegate];

[[app navController] presentModalViewController:achivementViewController animated:YES];

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AppController再次重命名为AppDelegate：

#import "AppDelegate.h"

AppDelegate * app = (((AppDelegate*) [UIApplication sharedApplication].delegate));

[[app navController] presentModalViewController:achivementViewController animated:YES];