1 #import "AppDelegate.h"
 2 #import "FirstViewController.h"
 3 #import "SecondViewController.h"
 4 #import "ThirdViewController.h"
 5 #import "FourthViewController.h"
 6 
 7 @interface AppDelegate ()
 8 
 9 @end
10 
11 @implementation AppDelegate
12 
13 
14 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
15     // Override point for customization after application launch.
16     
17     // 第一步：创建window
18     self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
19     self.window.backgroundColor = [UIColor whiteColor];
20     [self.window makeKeyAndVisible];
21     
22     
23     
24     // 第二步：创建UITabBarController对象
25     UITabBarController *mainTab = [[UITabBarController alloc] init];
26     //mainTab.tabBar.barTintColor = [UIColor purpleColor];
27     mainTab.tabBar.tintColor = [UIColor colorWithRed:15 / 255.0 green:178 / 255.0 blue:0 alpha:1];
28     
29     
30     
31     // 第三步：设置window的根控制器
32     self.window.rootViewController = mainTab;
33     
34     
35     
36     // 第四步：设置UITabBarController的控制器数组
37     // 4.1 创建导航控制器并制定导航控制器的根视图
38     UINavigationController *firstNav = [[UINavigationController alloc] initWithRootViewController:[[FirstViewController alloc] init]];
39     
40     UINavigationController *secondNav = [[UINavigationController alloc] initWithRootViewController:[[SecondViewController alloc] init]];
41     
42     UINavigationController *thirdNav = [[UINavigationController alloc] initWithRootViewController:[[ThirdViewController alloc] init]];
43     
44     UINavigationController *fourthNav = [[UINavigationController alloc] initWithRootViewController:[[FourthViewController alloc] init]];
45     
46     
47     
48     // 4.2 设置导航控制器的TabBarItem
49     UIImage *img1 = [UIImage imageNamed:@"tabbar_mainframe@3x"];
50     UIImage *imgS1 = [[UIImage imageNamed:@"tabbar_mainframeHL@3x"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];  // 设置选中的图片保留图片原有的样式，不进行渲染
51     
52     UIImage *img2 = [UIImage imageNamed:@"tabbar_contacts@3x"];
53     UIImage *imgS2 = [[UIImage imageNamed:@"tabbar_contactsHL@3x"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
54     
55     UIImage *img3 = [UIImage imageNamed:@"tabbar_discover@3x"];
56     UIImage *imgS3 = [[UIImage imageNamed:@"tabbar_discoverHL@3x"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
57     
58     UIImage *img4 = [UIImage imageNamed:@"tabbar_me@3x"];
59     UIImage *imgS4 = [[UIImage imageNamed:@"tabbar_meHL@3x"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
60     
61     
62     
63     firstNav.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"微信" image:img1 selectedImage:imgS1];
64     secondNav.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"通讯录" image:img2 selectedImage:imgS2];
65     thirdNav.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"发现" image:img3 selectedImage:imgS3];
66     fourthNav.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"我" image:img4 selectedImage:imgS4];
67     
68     
69     // 4.3 将导航控制器对象添加到数组中
70     //[mainTab addChildViewController:firstNav];
71     mainTab.viewControllers = @[firstNav, secondNav, thirdNav, fourthNav];
72     
73     
74 #pragma mark - UIAppearance
75     
76     // 一键设置
77     [UINavigationBar appearance].barTintColor = [UIColor blackColor];
78     
79     [UINavigationBar appearance].barStyle = UIBarStyleBlack;
80     
81     [UINavigationBar appearance].tintColor = [UIColor whiteColor];
82     
83     
84     // 同理，也有，但是只有一个tabbar，没必要而已
85 //    [UITabBar appearance]
86     
87     
88     return YES;
89 }
90 
91 
92 @end

 1 #import "FirstViewController.h"
 2 #import "Test1ViewController.h"
 3 
 4 @interface FirstViewController ()
 5 
 6 @end
 7 
 8 @implementation FirstViewController
 9 
10 - (void)viewDidLoad {
11     [super viewDidLoad];
12     // Do any additional setup after loading the view.
13     
14     
15     self.title = @"微信";
16     self.navigationController.navigationBar.barTintColor = [UIColor blackColor];
17     
18 //    [self.navigationController.navigationBar setBackgroundImage:<#(nullable UIImage *)#> forBarMetrics:<#(UIBarMetrics)#>]
19     
20     // 修改title的颜色和大小
21 //    [self.navigationController.navigationBar setTitleTextAttributes:@{NSForegroundColorAttributeName : [UIColor whiteColor], NSFontAttributeName : [UIFont systemFontOfSize:20]}];
22     
23     
24     // 设置barstyle修改状态栏（简单，可以用）
25 //    self.navigationController.navigationBar.barStyle = UIBarStyleBlack;
26     
27     
28     // 添加右按钮
29     self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(click:)];
30     
31 }
32 
33 - (void)click:(UIBarButtonItem *)sender {
34     
35     Test1ViewController *test1VC = [[Test1ViewController alloc] init];
36     
37     // 设置push隐藏tabbar
38     test1VC.hidesBottomBarWhenPushed = YES;
39     
40     [self.navigationController pushViewController:test1VC animated:YES];
41 }
42 
43 @end