[IOS]隐藏状态栏

//方法一
- (void)viewDidLoad {
[super viewDidLoad];
//隐藏状态栏
[[UIApplication sharedApplication] setStatusBarHidden:NO];

}
- (BOOL)prefersStatusBarHidden
{
return NO;
}

方法二：
- (void)viewDidLoad {

[super viewDidLoad];

if ([self respondsToSelector:@selector(setNeedsStatusBarAppearanceUpdate)]) {
// iOS7之后
[self prefersStatusBarHidden];
[self performSelector:@selector(setNeedsStatusBarAppearanceUpdate)];
}
}
- (BOOL)prefersStatusBarHidden
{
return YES;//隐藏为YES，显示为NO
}

// iOS9之后
[[UIApplication sharedApplication] setStatusBarHidden:YES];