iOS UI-标签控制器（UITabBarController）

 1 #import "AppDelegate.h"
 2 #import "FirstViewController.h"
 3 #import "SecondViewController.h"
 4 
 5 @interface AppDelegate ()
 6 
 7 @end
 8 
 9 @implementation AppDelegate
10 
11 
12 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
13     
14     self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
15     self.window.backgroundColor = [UIColor whiteColor];
16     
17     //创建子控制器
18     FirstViewController *first = [[FirstViewController alloc] init];
19     first.tabBarItem.title = @"主页";
20     first.tabBarItem.image = [UIImage imageNamed:@"home.png"];
21     first.tabBarItem.badgeValue = @"123";
22     
23     SecondViewController *second = [[SecondViewController alloc] init];
24     second.tabBarItem.title = @"设置";
25     second.tabBarItem.image = [UIImage imageNamed:@"setting.png"];
26 
27     //创建标签控制器
28     UITabBarController *tabCtr = [[UITabBarController alloc] init];
29     
30     NSArray *viewControllerArr = [NSArray arrayWithObjects:first,second, nil];
31     
32     tabCtr.viewControllers = viewControllerArr;
33     
34     self.window.rootViewController = tabCtr;
35     
36     [self.window makeKeyAndVisible];
37     
38     return YES;
39 }
40 
41 
42 #import "FirstViewController.h"
43 
44 @interface FirstViewController ()
45 
46 @end
47 
48 @implementation FirstViewController
49 
50 - (void)viewDidLoad {
51     [super viewDidLoad];
52     UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(100, 200, self.view.frame.size.width-200, 50)];
53     label.backgroundColor = [UIColor whiteColor];
54     label.textAlignment = NSTextAlignmentCenter;
55     label.text = @"第一个视图";
56     [self.view addSubview:label];
57     
58     self.view.backgroundColor = [UIColor cyanColor];
59 }
60 
61 - (void)didReceiveMemoryWarning {
62     [super didReceiveMemoryWarning];
63     // Dispose of any resources that can be recreated.
64 }
65 
66 @end
67 
68 
69 
70 #import "SecondViewController.h"
71 
72 @interface SecondViewController ()
73 
74 @end
75 
76 @implementation SecondViewController
77 
78 - (void)viewDidLoad {
79     [super viewDidLoad];
80     UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(100, 200, self.view.frame.size.width-200, 50)];
81     label.backgroundColor = [UIColor whiteColor];
82     label.textAlignment = NSTextAlignmentCenter;
83     label.text = @"第二个视图";
84     [self.view addSubview:label];
85     
86     self.view.backgroundColor = [UIColor purpleColor];
87 }
88 
89 - (void)didReceiveMemoryWarning {
90     [super didReceiveMemoryWarning];
91     // Dispose of any resources that can be recreated.
92 }
93 
94 @end