使用纯代码编写了底部是tab一个视图有nav的例子

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iphone模拟器上截图

从模拟器上截图,原来需要按住Control键时截图功能才会出现在Edit菜单中。也可以使用mac自带的截图功能。


上面是抄http://www.cnblogs.com/a7345678/archive/2012/02/04/2338243.html这里来的, 因为效果需要截图,所以找了下模拟器上如何截图。


下图是效果:

以下为步骤和关键代码:

1.新建一个windows based程序,删掉xib文件。在设置中的summary下面iPhone/iPod Deployment info去掉main interface

2.在delegate中注释掉- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions方法,

 加上-(void)applicationDidFinishLaunching:(UIApplication *)application方法

3关键代码:

 在新加上的方法里面,添加如下代码:

    self.window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen] bounds]];        //First view    myViewController *myvc;    myvc = [[myViewController alloc]init];    myvc.title = @"Root";    myvc.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemDownloads tag:0];        //Second view    myViewController2 *myvc2;    myvc2 = [[myViewController2 alloc]init];    myvc2.title = @"Second";    myvc2.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemFavorites tag:0];        //Third view    myViewController2 *myvc3;    myvc3 = [[myViewController2 alloc]init];    myvc3.title = @"Third";    myvc3.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemBookmarks tag:0];        // create a tab bar controller    tabBarController = [[UITabBarController alloc] init];    // create each Navigation controller    navController = [[UINavigationController alloc] init];        [navController pushViewController:myvc animated:NO];        // add navigation controllers to the tab bar controller    tabBarController.viewControllers = [[NSArray alloc]initWithObjects:navController, myvc2, myvc3 ,nil];        [self.window addSubview:tabBarController.view];    [self.window makeKeyAndVisible];

当然,你在