Weird issue when moving a view up with textFields

troop231 · June 2012

Hello, I am trying to slide my view up when a uitextfield is active, and it works perfectly on landscapeLeft mode on the iPad, but not landscapeRight.

Here is a picture of the issue (after the code)

It doesn't move at the same interval up as landscapeLeft, and I get this black bar on the bottom of the screen on the third textField.

If you can help me I'll greatly appreciate it.

My code is as follows:

CGFloat animatedDistance;

static const CGFloat KEYBOARD_ANIMATION_DURATION = 0.3;
static const CGFloat MINIMUM_SCROLL_FRACTION = 0.2;
static const CGFloat MAXIMUM_SCROLL_FRACTION = 0.8;
static const CGFloat LANDSCAPE_KEYBOARD_HEIGHT = 322;

- (void)textFieldDidBeginEditing:(UITextField *)textField
{
    {
        UIInterfaceOrientation orientation =
        [[UIApplication sharedApplication] statusBarOrientation];
          
            CGRect textFieldRect =
            [self.view.window convertRect:textField.bounds fromView:textField];
            CGRect viewRect =
            [self.view.window convertRect:self.view.bounds fromView:self.view];
            
            CGFloat midline = textFieldRect.origin.x + 0.5 * textFieldRect.size.height;
            CGFloat numerator =
            midline - viewRect.origin.x
            - MINIMUM_SCROLL_FRACTION * viewRect.size.height;
            CGFloat denominator =
            (MAXIMUM_SCROLL_FRACTION - MINIMUM_SCROLL_FRACTION)
            * viewRect.size.height;
            CGFloat heightFraction = numerator / denominator;
            
            if (heightFraction < 0.0)
            {
                heightFraction = 0.0;
            }
            else if (heightFraction > 1.0)
            {
                heightFraction = 1.0;
            }
            
            animatedDistance = floor(LANDSCAPE_KEYBOARD_HEIGHT * heightFraction);
            
            CGRect viewFrame = self.view.frame;
            
            if (orientation == UIInterfaceOrientationLandscapeLeft) 
            {
                viewFrame.origin.x -= animatedDistance;
            }
            if (orientation == UIInterfaceOrientationLandscapeRight) 
            {
                viewFrame.origin.x += animatedDistance;
            }
            
            [UIView beginAnimations:nil context:NULL];
            [UIView setAnimationBeginsFromCurrentState:YES];
            [UIView setAnimationDuration:KEYBOARD_ANIMATION_DURATION];
            
            [self.view setFrame:viewFrame];
            [UIView commitAnimations];
    }
}

- (void)textFieldDidEndEditing:(UITextField *)textField
{
    UIInterfaceOrientation orientation =
    [[UIApplication sharedApplication] statusBarOrientation];
    

        CGRect viewFrame = self.view.frame;
        
        if (orientation == UIInterfaceOrientationLandscapeLeft) 
        {
            viewFrame.origin.x += animatedDistance;
        }
        if (orientation == UIInterfaceOrientationLandscapeRight) 
        {
            viewFrame.origin.x += animatedDistance;
        }
        
        [UIView beginAnimations:nil context:NULL];
        [UIView setAnimationBeginsFromCurrentState:YES];
        [UIView setAnimationDuration:KEYBOARD_ANIMATION_DURATION];
        
        [self.view setFrame:viewFrame];
        [UIView commitAnimations];
    
}

- (BOOL)textFieldShouldReturn:(UITextField *)textField {
    if (textField == nameField) {
        [textField resignFirstResponder];
        [emailField becomeFirstResponder];
    } else if (textField == emailField) {
        [phoneField becomeFirstResponder];
    } else if (textField == phoneField) { 
        [phoneField resignFirstResponder];
    }
    return YES; 
}

troop231 · June 2012

So I sortof solved it with this code: However, when I rotate from landscapeLeft or landscapeRight, to the other landscape mode, it cant remember the frame, and it doesn't look right.

Can anyone please help me? Thank you! :)

- (void)textFieldDidBeginEditing:(UITextField *)textField
{
    UIInterfaceOrientation orientation =
    [[UIApplication sharedApplication] statusBarOrientation];
    
    if (orientation == UIInterfaceOrientationLandscapeLeft || 
        orientation == UIInterfaceOrientationLandscapeRight) 
    {
        
        CGRect textFieldRect =
        [self.view.window convertRect:textField.bounds fromView:textField];
        CGRect viewRect =
        [self.view.window convertRect:self.view.bounds fromView:self.view];
        
        CGFloat midline = textFieldRect.origin.y + 0.5 * textFieldRect.size.height;
        CGFloat numerator =
        midline - viewRect.origin.y
        + MINIMUM_SCROLL_FRACTION * viewRect.size.height;
        CGFloat denominator =
        (MAXIMUM_SCROLL_FRACTION - MINIMUM_SCROLL_FRACTION)
        * viewRect.size.height;
        CGFloat heightFraction = numerator / denominator;
        
        if (heightFraction < 0.0)
        {
            heightFraction = 0.0;
        }
        else if (heightFraction > 1.0)
        {
            heightFraction = 1.0;
        }
        
        animatedDistance = floor(LANDSCAPE_KEYBOARD_HEIGHT * heightFraction);
        
        CGRect viewFrame = self.view.frame;
        
        if (orientation == UIInterfaceOrientationLandscapeLeft) 
        {
            viewFrame.origin.x -= animatedDistance;
        }
        if (orientation == UIInterfaceOrientationLandscapeRight) 
        {
            viewFrame.origin.x += animatedDistance;
        }
        
        [UIView beginAnimations:nil context:NULL];
        [UIView setAnimationBeginsFromCurrentState:YES];
        [UIView setAnimationDuration:KEYBOARD_ANIMATION_DURATION];
        
        [self.view setFrame:viewFrame];
        [UIView commitAnimations];
    }
}

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