iOS7中隐藏状态栏的方法

1.UIViewController中的方法
- (UIStatusBarStyle)preferredStatusBarStyle NS_AVAILABLE_IOS(7_0); // Defaults to UIStatusBarStyleDefault

- (BOOL)prefersStatusBarHidden NS_AVAILABLE_IOS(7_0); // Defaults to NO

// Override to return the type of animation that should be used for status bar changes for this view controller. This currently only affects changes to prefersStatusBarHidden.

- (UIStatusBarAnimation)preferredStatusBarUpdateAnimation NS_AVAILABLE_IOS(7_0); // Defaults to UIStatusBarAnimationFade

2.UIApplication的方法

/**
*  隐藏状态栏效果
*  1.系统提供了2种动画,一种是偏移,一种是渐隐
*  2.在plist文件中将”View controller-based status bar appearance” 设置为 “No”
*/
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationNone];