设置statusBarStyle

设置状态栏的样式，

typedef NS_ENUM(NSInteger, UIStatusBarStyle) {
    UIStatusBarStyleDefault                                     = 0, // Dark content, for use on light backgrounds
    UIStatusBarStyleLightContent     NS_ENUM_AVAILABLE_IOS(7_0) = 1, // Light content, for use on dark backgrounds
    
    UIStatusBarStyleBlackTranslucent NS_ENUM_DEPRECATED_IOS(2_0, 7_0, "Use UIStatusBarStyleLightContent") = 1,
    UIStatusBarStyleBlackOpaque      NS_ENUM_DEPRECATED_IOS(2_0, 7_0, "Use UIStatusBarStyleLightContent") = 2,
} __TVOS_PROHIBITED;

设置statusBarStyle

原文：http://www.cnblogs.com/xs514521/p/5473864.html