UITabBarController 微信

AppDelegate.m

 #import "AppDelegate.h"
 #import "FirstViewController.h"
 #import "SecondViewController.h"
 #import "ThirdViewController.h"
 #import "FourthViewController.h"

 @interface AppDelegate ()

 @end

 @implementation AppDelegate

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
     // Override point for customization after application launch.

     // 第一步：创建window
     self.window = [[UIWindow alloc] initWithFrame:[UIScreen mainScreen].bounds];
     self.window.backgroundColor = [UIColor whiteColor];
     [self.window makeKeyAndVisible];

     // 第二步：创建UITabBarController对象
     UITabBarController *mainTab = [[UITabBarController alloc] init];
     //mainTab.tabBar.barTintColor = [UIColor purpleColor];
     mainTab.tabBar.tintColor = [UIColor colorWithRed: / 255.0 green: / 255.0 blue: alpha:];

     // 第三步：设置window的根控制器
     self.window.rootViewController = mainTab;

     // 第四步：设置UITabBarController的控制器数组
     // 4.1 创建导航控制器并制定导航控制器的根视图
     UINavigationController *firstNav = [[UINavigationController alloc] initWithRootViewController:[[FirstViewController alloc] init]];

     UINavigationController *secondNav = [[UINavigationController alloc] initWithRootViewController:[[SecondViewController alloc] init]];

     UINavigationController *thirdNav = [[UINavigationController alloc] initWithRootViewController:[[ThirdViewController alloc] init]];

     UINavigationController *fourthNav = [[UINavigationController alloc] initWithRootViewController:[[FourthViewController alloc] init]];

     // 4.2 设置导航控制器的TabBarItem
     UIImage *img1 = [UIImage imageNamed:@"tabbar_mainframe@3x"];
     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

     UIImage *img2 = [UIImage imageNamed:@"tabbar_contacts@3x"];
     UIImage *imgS2 = [[UIImage imageNamed:@"tabbar_contactsHL@3x"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

     UIImage *img3 = [UIImage imageNamed:@"tabbar_discover@3x"];
     UIImage *imgS3 = [[UIImage imageNamed:@"tabbar_discoverHL@3x"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

     UIImage *img4 = [UIImage imageNamed:@"tabbar_me@3x"];
     UIImage *imgS4 = [[UIImage imageNamed:@"tabbar_meHL@3x"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];

     firstNav.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"微信" image:img1 selectedImage:imgS1];
     secondNav.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"通讯录" image:img2 selectedImage:imgS2];
     thirdNav.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"发现" image:img3 selectedImage:imgS3];
     fourthNav.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"我" image:img4 selectedImage:imgS4];

     // 4.3 将导航控制器对象添加到数组中
     //[mainTab addChildViewController:firstNav];
     mainTab.viewControllers = @[firstNav, secondNav, thirdNav, fourthNav];

 #pragma mark - UIAppearance

     // 一键设置
     [UINavigationBar appearance].barTintColor = [UIColor blackColor];

     [UINavigationBar appearance].barStyle = UIBarStyleBlack;

     [UINavigationBar appearance].tintColor = [UIColor whiteColor];

     // 同理，也有，但是只有一个tabbar，没必要而已
 //    [UITabBar appearance]

     return YES;
 }

 @end

FirstViewController.m

 #import "FirstViewController.h"
 #import "Test1ViewController.h"

 @interface FirstViewController ()

 @end

 @implementation FirstViewController

 - (void)viewDidLoad {
     [super viewDidLoad];
     // Do any additional setup after loading the view.

     self.title = @"微信";
     self.navigationController.navigationBar.barTintColor = [UIColor blackColor];

 //    [self.navigationController.navigationBar setBackgroundImage:<#(nullable UIImage *)#> forBarMetrics:<#(UIBarMetrics)#>]

     // 修改title的颜色和大小
 //    [self.navigationController.navigationBar setTitleTextAttributes:@{NSForegroundColorAttributeName : [UIColor whiteColor], NSFontAttributeName : [UIFont systemFontOfSize:20]}];

     // 设置barstyle修改状态栏（简单，可以用）
 //    self.navigationController.navigationBar.barStyle = UIBarStyleBlack;

     // 添加右按钮
     self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(click:)];

 }

 - (void)click:(UIBarButtonItem *)sender {

     Test1ViewController *test1VC = [[Test1ViewController alloc] init];

     // 设置push隐藏tabbar
     test1VC.hidesBottomBarWhenPushed = YES;

     [self.navigationController pushViewController:test1VC animated:YES];
 }

 @end