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;
}

注意：这边为每个tabBarController的子控件都增加一个nav，这样就可以在每个选项卡里都实现nav的跳转，把这个tabBarController作为整个的rootViewController;其中在其它控制器调用AppDelegate的方法setCarNum，可以[(AppDelegate*)[[UIApplication sharedApplication] delegate] setCartNum];

2：登录页面两输入框效果的实现

效果图：

主要代码：

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.title = @"登录";
    self.view.backgroundColor = [UIColor hexFloatColor:@"f8f8f8"];
    __weak typeof (self) wSelf = self;
    [self actionCustomLeftBtnWithNrlImage:@"btnback" htlImage:@"btnback" title:@"" action:^{
        [wSelf btnBackAction];
    }];
    
    UIImageView* line1 = [[UIImageView alloc] initWithFrame:CGRectMake(16, 20, mainWidth - 32, 0.5)];
    line1.backgroundColor = [UIColor hexFloatColor:@"dedede"];
    [self.view addSubview:line1];
    
    UIImageView* line3 = [[UIImageView alloc] initWithFrame:CGRectMake(16, 108, mainWidth - 32, 0.5)];
    line3.backgroundColor = [UIColor hexFloatColor:@"dedede"];
    [self.view addSubview:line3];
    
    UIImageView* line4 = [[UIImageView alloc] initWithFrame:CGRectMake(16, 20, 0.5, 88)];
    line4.backgroundColor = [UIColor hexFloatColor:@"dedede"];
    [self.view addSubview:line4];
    
    UIImageView* line5 = [[UIImageView alloc] initWithFrame:CGRectMake(mainWidth - 16, 20, 0.5, 88)];
    line5.backgroundColor = [UIColor hexFloatColor:@"dedede"];
    [self.view addSubview:line5];
    
    UIView* vUser = [[UIView alloc] initWithFrame:CGRectMake(16.5, 20.5, mainWidth - 33, 87)];
    vUser.backgroundColor = [UIColor whiteColor];
    [self.view addSubview:vUser];
    
    UIImageView* line2 = [[UIImageView alloc] initWithFrame:CGRectMake(16, 64, mainWidth - 32, 0.5)];
    line2.backgroundColor = [UIColor hexFloatColor:@"dedede"];
    [self.view addSubview:line2];

    UIImageView* imgUser = [[UIImageView alloc] initWithFrame:CGRectMake(10, 12, 20, 20)];
    imgUser.image = [UIImage imageNamed:@"login_name"];
    [vUser addSubview:imgUser];
    
    txtUser = [[UITextField alloc] initWithFrame:CGRectMake(35, 0, vUser.frame.size.width - 35, 44)];
    txtUser.placeholder = @"请输入您的手机号/邮箱号";
    txtUser.clearButtonMode = UITextFieldViewModeWhileEditing;
    txtUser.font = [UIFont systemFontOfSize:14];
    txtUser.text = [[NSUserDefaults standardUserDefaults] objectForKey:kLoginUsername];
    [vUser addSubview:txtUser];
    
    UIImageView* imgPwd = [[UIImageView alloc] initWithFrame:CGRectMake(10, 56, 20, 20)];
    imgPwd.image = [UIImage imageNamed:@"login_passWord"];
    [vUser addSubview:imgPwd];
    
    txtPwd = [[UITextField alloc] initWithFrame:CGRectMake(35, 44, vUser.frame.size.width - 35, 44)];
    txtPwd.placeholder = @"请输入您的密码";
    txtPwd.clearButtonMode = UITextFieldViewModeWhileEditing;
    txtPwd.font = [UIFont systemFontOfSize:14];
    txtPwd.secureTextEntry = YES;
    [vUser addSubview:txtPwd];
    
    UIButton* btnLogin = [[UIButton alloc] initWithFrame:CGRectMake(16, 120, mainWidth - 32, 44)];
    btnLogin.layer.cornerRadius = 5;
    btnLogin.backgroundColor = mainColor;
    [btnLogin setTitle:@"登录" forState:UIControlStateNormal];
    [btnLogin addTarget:self action:@selector(btnLoginAction) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:btnLogin];

    
    UIButton* btnReg = [[UIButton alloc] initWithFrame:CGRectMake(mainWidth - 120, 170, 100, 44)];
    [btnReg setTitle:@"新用户注册" forState:UIControlStateNormal];
    btnReg.titleLabel.font = [UIFont systemFontOfSize:13];
    [btnReg setTitleColor:[UIColor grayColor] forState:UIControlStateNormal];
    [btnReg addTarget:self action:@selector(btnRegAction) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:btnReg];
}

注意：它是通过几条背景线跟图片和输入框进行一个组合