在windows添加视图

//程序启动完成调用

- (BOOL)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary*)lanchOptions{

//创建windows

self.winow = [[UIWindow alloc]intiWithFrame:[[UIScreen mainScreen]bounds]];

//设置为第一个显示

[self.window makeKeyAndVisible];

//添加视图

.......

return YES;

}