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Write example for Objective-C (The same code for SWIFT already wrote by @dennykim)

Create property for BOOL

@property (nonatomic,assign) BOOL statusBarHidden;

Set in info.plist View controller-based status bar appearance == YES

Go to ViewController and write the next code:

-(void)viewWillAppear:(BOOL)animated{

[super viewWillAppear:animated];

self.statusBarHidden = TRUE;

[self setNeedsStatusBarAppearanceUpdate];

}

-(void)viewWillDisappear:(BOOL)animated{

    [super viewWillDisappear:animated];

    self.statusBarHidden = FALSE;

    [self setNeedsStatusBarAppearanceUpdate];   

}

- (BOOL)prefersStatusBarHidden {

    return self.statusBarHidden;

}

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- (BOOL)prefersStatusBarHidden {

    return YES;

}