主程序底部TabBar功能跟登录页面布局

1:主程序底部TabBar的功能实现

效果图：

主要代码如下：

- (UITabBarController*)setRootVC:(BOOL)bShowCart{  //创建一个子控制器 用于显示当前的tab  TabHomeVC *homeVC = [[TabHomeVC alloc] init];  //每个tab都是一个nav的内容，这样每个都是自个的nav，进行跳转  UINavigationController *homeNav = [[UINavigationController alloc] initWithRootViewController:homeVC];  UIImage *unselectedImage = [UIImage imageNamed:@"tab-home"];  UIImage *selectedImage = [UIImage imageNamed:@"tab-home-s"];    homeVC.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"首页"                           image:[unselectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]                       selectedImage:[selectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];  homeVC.tabBarItem.tag = 0;    TabProductVC *proVC = [[TabProductVC alloc] init];  UINavigationController *proNav = [[UINavigationController alloc] initWithRootViewController:proVC];  unselectedImage = [UIImage imageNamed:@"tab-pro"];  selectedImage = [UIImage imageNamed:@"tab-pro-s"];    proNav.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"所有商品"                           image:[unselectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]                       selectedImage:[selectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];  proNav.tabBarItem.tag = 1;    TabNewestVC * newVc = [[TabNewestVC alloc] init];  UINavigationController * newNav = [[UINavigationController alloc] initWithRootViewController:newVc];  unselectedImage = [UIImage imageNamed:@"tab-new"];  selectedImage = [UIImage imageNamed:@"tab-new-s"];    newNav.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"最新揭晓"                            image:[unselectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]                        selectedImage:[selectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];  newNav.tabBarItem.tag = 2;    TabShopCartVC * cartVc = [[TabShopCartVC alloc] init];  UINavigationController * cartNav = [[UINavigationController alloc] initWithRootViewController:cartVc];  unselectedImage = [UIImage imageNamed:@"tab-cart"];  selectedImage = [UIImage imageNamed:@"tab-cart-s"];    cartNav.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"购物车"                           image:[unselectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]                       selectedImage:[selectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];  cartNav.tabBarItem.tag = 3;    TabMineVC * mineVc = [[TabMineVC alloc] init];  UINavigationController * mineNav = [[UINavigationController alloc] initWithRootViewController:mineVc];  unselectedImage = [UIImage imageNamed:@"tab-mine"];  selectedImage = [UIImage imageNamed:@"tab-mine-s"];    mineNav.tabBarItem = [[UITabBarItem alloc] initWithTitle:@"我的云购"                            image:[unselectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]                        selectedImage:[selectedImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];  mineNav.tabBarItem.tag = 4;      //把上面的控制器增加到uitabbarcontroller的数组里  UITabBarController *tabBarController = [[UITabBarController alloc] init];  if(bShowCart)    tabBarController.viewControllers = @[homeNav,proNav,newNav,cartNav,mineNav];  else    tabBarController.viewControllers = @[homeNav,proNav,newNav,mineNav];  tabBarController.delegate = self;      //设置一些样式内容  // customise TabBar UI Effect  [UITabBar appearance].tintColor = BG_COLOR;    [[UITabBarItem appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName:TABBAR_TEXT_NOR_COLOR} forState:UIControlStateNormal];  [[UITabBarItem appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName:TABBAR_TEXT_HLT_COLOR} forState:UIControlStateSelected];    // customise NavigationBar UI Effect  [[UINavigationBar appearance] setBackgroundImage:[UIImage imageWithRenderColor:NAVBAR_COLOR renderSize:CGSizeMake(10., 10.)] forBarMetrics:UIBarMetricsDefault];  [[UINavigationBar appearance] setTitleTextAttributes:@{NSFontAttributeName:[UIFont boldSystemFontOfSize:16.],NSForegroundColorAttributeName:[UIColor blackColor]}];      UITabBar *tabBar = tabBarController.tabBar;  tabBar.backgroundColor = BG_COLOR;    return tabBarController;}- (void)setCartNum{  //获得UITabBarController  UITabBarController* tabVC = (UITabBarController*)self.window.rootViewController;  //获得其中第四个 也就是购物车那个tabbar  UINavigationController* navVC = [tabVC.viewControllers objectAtIndex:3];  __weak typeof (navVC) wNav = navVC;  //给它增加一个数字标识  [CartModel quertCart:nil value:nil block:^(NSArray* result){    if(result.count > 0)      wNav.tabBarItem.badgeValue = [NSString stringWithFormat:@"%d",(int)result.count];    else      wNav.tabBarItem.badgeValue = nil;  }];}- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {  [self setWindow:[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]];  //加载初始化的那个tab  UIViewController *rootViewController = [self setRootVC:YES];  [[self window] setRootViewController:rootViewController];  //显示是否有数字标识  [self setCartNum];  // set backgroundColor  [[self window] setBackgroundColor:[UIColor whiteColor]];  // set makeKeyAndVisible  [[self window] makeKeyAndVisible];  return YES;}

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原标题：主程序底部TabBar功能跟登录页面布局

关键词：登录