setStatusBarHidden not working - ios

Question

In my UIViewController, I have:
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationNone];
[self.view sizeToFit];
}
Yet the view looks like this:
I'm sure this code runs. I load the view from a xib. I haven't done anything else to the status bar like change its style. What could be wrong?
Even when I set `application.statusBarHidden = YES" in my app delegate, I see:

Answer 1

In your app's plist, if you have "View controller-based status bar appearance" set to YES, put this code in the view controller in which you hide the status bar:
- (BOOL)prefersStatusBarHidden {
return YES;
}
Else if "View controller-based status bar appearance" is set to NO, call the following whenever you want to hide the status bar.
[[UIApplication sharedApplication] setStatusBarHidden:YES withAnimation:UIStatusBarAnimationNone];

Answer 2

if you want to hide Status Bar in your app , Follow this steps :
Step 1 :
Step 2:
Step 3:
Add to your appDelegate didFinishLaunchingWithOptions function
application.statusBarHidden = YES;
so :
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
application.statusBarHidden = YES;
}

Answer 3

That's because iOS 7 has changed the way it deals with the status bar.
Setting UIViewControllerBasedStatusBarAppearance to NO on your app Info.plist should work.

Answer 4

You can show/hide your app status bar using the following code (Works on IOS 7 - IOS 8 and IOS 9):
in your project .h file add this boolean:
BOOL isShowStatus;
And in .m file add this:
//To show the status bar:
-(void)showTheStatusBar
{
isShowStatus = YES;
[self setNeedsStatusBarAppearanceUpdate];
}
//And to hide the status bar:
-(void)hideTheStatusBar
{
isShowStatus = NO;
[self setNeedsStatusBarAppearanceUpdate];
}
- (BOOL)prefersStatusBarHidden {
return !isShowStatus;
}
Simply call it from anywhere, didload for example:
- (void)viewDidLoad
{
[super viewDidLoad];
//To show the status bar:
[self showTheStatusBar];
//Or to hide it:
[self hideTheStatusBar];
}

Answer 5

For me it works fine:
- (BOOL)prefersStatusBarHidden {
return YES;
}
ALWAYS in the root view. If you are doing that in a subview will not work because status bar visibility will be taken from parent view.

Answer 6

Try adding this after you hide the status bar:
[self.view setFrame:[self.view bounds]];
In your appdelegate.m in didFinishLaunchingWithOptions:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
application.statusBarHidden = YES;
}
When I run your code: