网易彩票-竞技场

1. 新建UIViewController：Arena(竞技场)->Controller->Cocoa Touch Class->Class：HMArenaController；Subclass of：UIViewController

2. 设置“Arena.storyboard”文件的类为“HMArenaController”：Custom Class->Class：HMArenaController

3. 设置导航栏标题：拖进控件Segmented Control->Segment 0：足球；Segment 1：篮球

4. 在“HMArenaController.m”文件的“viewDidLoad”方法中设置控制器拉伸风格的背景图片，代码如下：

    //设置控制器的背景图片(拉伸)
    self.view.layer.contents = (__bridge id)[UIImage imageNamed:@"NLArenaBackground"].CGImage;

5. 在“HMArenaController.m”文件的“viewDidLoad”方法中设置导航栏的背景图片，代码如下：

    //设置 navbar 的图片
    [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"NLArenaNavBar64"] forBarMetrics:UIBarMetricsDefault];

6. 在“HMArenaController.m”文件的“viewDidLoad”方法中设置导航栏标题属性，代码如下：

    //获取 titleView
    UISegmentedControl* seg = (UISegmentedControl*)self.navigationItem.titleView;
    //设置默认的背景图片
    [seg setBackgroundImage:[UIImage imageNamed:@"CPArenaSegmentBG"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
    //设置选中的背景图片
    [seg setBackgroundImage:[UIImage imageNamed:@"CPArenaSegmentSelectedBG"] forState:UIControlStateSelected barMetrics:UIBarMetricsDefault];
    //设置文字的颜色
    [seg setTitleTextAttributes:@{ NSForegroundColorAttributeName : [UIColor whiteColor] } forState:UIControlStateNormal];
    [seg setTitleTextAttributes:@{ NSForegroundColorAttributeName : [UIColor whiteColor] } forState:UIControlStateSelected];

    //取消蓝色的线
    [seg setTintColor:[UIColor clearColor]];