IOS gets the keyboard height

-(Void) viewDidLoad {

[[Nsnotificationcenterdefacenter] addObserver: self selector: @ selector (keyboardDidShow :)

Name: UIKeyboardDidShowNotification object: nil];

[[Nsnotificationcenterdefacenter] addObserver: self selector: @ selector (keyboardDidHide :)

Name: UIKeyboardDidHideNotification object: nil];

}

-(Void) keyboardDidShow :( NSNotification *) nsNotification {

NSDictionary * userInfo = [nsNotificationuserInfo];

_ KeyboardSize = [[userInfo objectForKey: UIKeyboardFrameBeginUserInfoKey] CGRectValue]. size;

[SelfupdateTextViewSize];

}

-(Void) keyboardDidHide :( NSNotification *) nsNotification {

_ KeyboardSize = CGSizeMake (0.0, 0.0 );

[SelfupdateTextViewSize];

}

-(Void) updateTextViewSize {

UIInterfaceOrientation orientation =

[UIApplicationsharedApplication]. statusBarOrientation;

CGFloat keyboardHeight = UIInterfaceOrientationIsLandscape (orientation )? _ KeyboardSize. width

: _ KeyboardSize. height;

_ TextView. frame = CGRectMake (0, 0, self. view. frame. size. width, self. view. frame. size. height-keyboardHeight );

}