CCTexture2D初始化的问题

Cocos2d-x
#1

waterFront_texture=CCTextureCache::sharedTextureCache();
waterFront_texture->initWithImage(“waterBack0.png”);
waterBack_texture=CCTextureCache::sharedTextureCache();
waterBack_texture->initWithImage(“waterFront0.png”);
初始化报错!求指点

#2

waterFront_texture=CCTextureCache::sharedTextureCache()->addImage(“waterFront0.png”);
waterBack_texture=CCTextureCache::sharedTextureCache()->addImage(“waterBack0.png”);