引入代理類頭文件和要跳轉到的界面頭文件 

-（void）aaa

{

 //可以插入動畫

  LYXViewControllor * view = [LYXViewControllor new];

LYXDelegate * dingDong = [UIApplacation sharedApplacation].delegate;

dingDong.window.rootViewControllor = view;

   
 }