APP快速搭建框架

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
//1.创建窗口
self.window = [[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
//设置窗口的根控制器
CYXTabBarController *tabBarVC = [[CYXTabBarController alloc]init];
self.window.rootViewController = tabBarVC;
//3.显示窗口
[self.window makeKeyAndVisible];
return YES;
}

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

//添加第一个控制器
//1.1 初始化
CYXOneViewController *oneVC = [[CYXOneViewController alloc]init];
//1.2 把oneVC添加为UINavigationController的根控制器
UINavigationController *nav1 = [[UINavigationController alloc]initWithRootViewController:oneVC];
//设置tabBar的标题
nav1.title = @"首页";
//设置导航栏背景颜色
nav1.navigationBar.barTintColor = [UIColor yellowColor];
//设置tabBar的图标
nav1.tabBarItem.image = [UIImage imageNamed:@"icon_tabbar_merchant_normal"];
//设置navigationBar的标题
oneVC.navigationItem.title = @"这是导航栏标题1";
//设置背景色
oneVC.view.backgroundColor = [UIColor whiteColor];
//1.3 把UINavigationController交给UITabBarController管理
[self addChildViewController:nav1];

//添加第二个控制器
CYXTwoViewController *twoVC = [[CYXTwoViewController alloc]init];
UINavigationController *nav2 = [[UINavigationController alloc]initWithRootViewController:twoVC];
nav2.title = @"我的";
//设置导航栏背景图片
//[nav2.navigationBar setBackgroundImage:[UIImage imageNamed:@""] forBarMetrics:UIBarMetricsDefault];
nav2.tabBarItem.image = [UIImage imageNamed:@"icon_tabbar_mine"];
twoVC.navigationItem.title = @"这是导航栏标题2";
twoVC.view.backgroundColor = [UIColor whiteColor];
[self addChildViewController:nav2];

//添加第三个控制器
CYXThreeViewController *threeVC = [[CYXThreeViewController alloc]init];
UINavigationController *nav3 = [[UINavigationController alloc]initWithRootViewController:threeVC];
nav3.title = @"开门";
nav3.tabBarItem.image = [UIImage imageNamed:@"icon_tabbar_onsite"];
threeVC.navigationItem.title = @"这是导航栏标题3";
threeVC.view.backgroundColor = [UIColor whiteColor];
[self addChildViewController:nav3];

//添加第四个控制器
CYXFourViewController *fourVC = [[CYXFourViewController alloc]init];
UINavigationController *nav4 = [[UINavigationController alloc]initWithRootViewController:fourVC];
nav4.title = @"更多";
nav4.tabBarItem.image = [UIImage imageNamed:@"icon_tabbar_misc"];
fourVC.navigationItem.title = @"这是导航栏标题4";
fourVC.view.backgroundColor = [UIColor whiteColor];
[self addChildViewController:nav4];
}