Key board hides textField when Orientation Changes?

Question

I have two textfields in a subview as viewLogin. when try to enter text key board is hiding them. I solved that problem by moving the viewLogin. Code is...

- (void)textFieldDidBeginEditing:(UITextField *)textField {

    UIDeviceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];

    if (orientation == UIDeviceOrientationLandscapeLeft || orientation == UIDeviceOrientationLandscapeRight) {

        viewLogin.frame = CGRectMake((1024-viewLogin.frame.size.width)/2, (768-viewLogin.frame.size.height)/9, viewLogin.frame.size.width, viewLogin.frame.size.height);
    }
    else {
        viewLogin.frame = CGRectMake((768-viewLogin.frame.size.width)/2, (1024-viewLogin.frame.size.height)/2, viewLogin.frame.size.width, viewLogin.frame.size.height);
    }
}

- (void)textFieldDidEndEditing:(UITextField *)textField {

    UIDeviceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];

    if (orientation == UIDeviceOrientationLandscapeLeft || orientation == UIDeviceOrientationLandscapeRight) {
        viewLogin.frame = CGRectMake((1024-viewLogin.frame.size.width)/2, (768-viewLogin.frame.size.height)/2.5, viewLogin.frame.size.width, viewLogin.frame.size.height);
    }
    else {
        viewLogin.frame = CGRectMake((768-viewLogin.frame.size.width)/2, (1024-viewLogin.frame.size.height)/2, viewLogin.frame.size.width, viewLogin.frame.size.height);
    }
}

Problem here i facing is if i first change the orientation to Landscape and click on textField its working fine but if i first click on textField in portrait mode and then changed to Landscape left/right its not working..

can some help me to solve this....

Thanks in advance

Answer 1

This is what Apple uses (take a look at the KeyboardAccessory example): First, register for keyboard notifications in viewDidLoad

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];

and make sure you unregister in viewDidUnload

[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] removeObserver:self name:UIKeyboardWillHideNotification object:nil];

then add these methods to your implementation:

- (void)keyboardWillShow:(NSNotification *)notification 
{
    NSDictionary *userInfo = [notification userInfo];

    NSValue *keyboardEndFrameValue = [userInfo objectForKey:UIKeyboardFrameEndUserInfoKey];

    CGRect keyboardRect = [keyboardEndFrameValue CGRectValue];
    keyboardRect = [self.view convertRect:keyboardRect fromView:nil];

    CGFloat keyboardTop = keyboardRect.origin.y;
    CGRect newTextViewFrame = self.view.bounds;
    newTextViewFrame.size.height = keyboardTop - self.view.bounds.origin.y;

    NSValue *animationDurationValue = [userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey];
    NSTimeInterval animationDuration;
    [animationDurationValue getValue:&animationDuration];

    [UIView animateWithDuration:animationDuration
                     animations:^{
                         self.textView.frame = newTextViewFrame;
                     }];
}


- (void)keyboardWillHide:(NSNotification *)notification 
{
    NSDictionary *userInfo = [notification userInfo];

    NSValue *animationDurationValue = [userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey];
    NSTimeInterval animationDuration;
    [animationDurationValue getValue:&animationDuration];

    [UIView animateWithDuration:animationDuration
                     animations:^{
                         self.textView.frame = self.view.bounds;
                     }];
}

I'm using it and I do not have any problems with orientation changes.