- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

// Override point for customization after application launch.

//建立window

self.window = [[UIWindowalloc]initWithFrame:[[UIScreenmainScreen] bounds]];

self.window.backgroundColor = [UIColorwhiteColor];

//初始化一個tabBar控制器

UITabBarController * tb = [[UITabBarControlleralloc]init];

//設定控制器為window的根控制器

self.window.rootViewController = tb;

//建立子控制器

HomeViewController * hv = [[HomeViewControlleralloc]init];

//建立導航欄，並將子控制器同步

UINavigationController * nhv = [[UINavigationControlleralloc]initWithRootViewController:hv];

//子控制器的背景顏色

    nhv.view.backgroundColor = [UIColorgrayColor];

//子控制器的tabBar的標題

    nhv.tabBarItem.title = @"首頁";

//子控制器的tabBar的圖片

    nhv.tabBarItem.image = [UIImageimageNamed:@""];

//選中時的圖片

    nhv.tabBarItem.selectedImage = [UIImageimageNamed:@"[email protected]"];

//子控制器的tabBar的圖片右上角的文字

    nhv.

DiscountViewController * dv = [[DiscountViewControlleralloc]init];

UINavigationController * ndv = [[UINavigationControlleralloc]initWithRootViewController:dv];

    ndv.tabBarItem.title = @"優惠";

    ndv.view.backgroundColor = [UIColorgreenColor];

    ndv.tabBarItem.image = [UIImageimageNamed:@""];

CollectionViewController * cv = [[CollectionViewControlleralloc]init];

UINavigationController * ncv = [[UINavigationControlleralloc]initWithRootViewController:cv];

    ncv.view.backgroundColor = [UIColororangeColor];

    ncv.tabBarItem.title = @"收藏";

    ncv.tabBarItem.image = [UIImageimageNamed:@""];

SignViewController * sv = [[SignViewControlleralloc]init];

UINavigationController * nsv = [[UINavigationControlleralloc]initWithRootViewController:sv];

    nsv.view.backgroundColor = [UIColorredColor];

    nsv.tabBarItem.title = @"登入";

    nsv.tabBarItem.image = [UIImageimageNamed:@""];

    tb.tabBar.barTintColor = [UIColorwhiteColor];//顏色

//將所有的子控制器加到tabBar上，tabBar作為根控制器

    tb.viewControllers = @[nhv,ndv,ncv,nsv];

return YES;

}

self.title = @"";//導航欄的標題

self.navigationController.navigationBar.barTintColor = [UIColororangeColor];//導航欄顏色

UILabel * lab = [[UILabelalloc]initWithFrame:CGRectMake(0, 0, 100, 40)];

    lab.text = @"";

    lab.font = [UIFontsystemFontOfSize:25];

    lab.textAlignment = NSTextAlignmentCenter;

    lab.textColor = [UIColorwhiteColor];

self.navigationItem.titleView = lab;//自定義導航欄標題

UIButton * searchBut = [UIButtonbuttonWithType:UIButtonTypeCustom];//自定因導航欄按鈕

    searchBut.frame = CGRectMake(0, 0, 40, 40);

    [searchBut setTitle:@"搜尋"forState:UIControlStateNormal];

    [searchBut addTarget:selfaction:@selector(search) forControlEvents:UIControlEventTouchUpInside];

UIBarButtonItem * rigntBut = [[UIBarButtonItemalloc]initWithCustomView:searchBut];

self.navigationItem.rightBarButtonItem = rigntBut;