本吧须知09-28〖吧务公布〗DDmenuController框架问题

DDmenuController框架的左侧试图的切换，怎么全屏的问题？
NewsViewController *newsVC=[[NewsViewController alloc] init];
UINavigationController *menuController = (UINavigationController*)((AppDelegate*)[[UIApplication sharedApplication] delegate]).menuController;
[menuController pushViewController:newsVC animated:YES];
这样代码实现效果只在原来主界面显示push内容，而不是全屏显示