TextField and TextView Moving Up while typing

At top.before #import.

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 PORTRAIT_KEYBOARD_HEIGHT = 216;

static const CGFloat LANDSCAPE_KEYBOARD_HEIGHT = 162;

//any where in .m

- (void)textViewDidBeginEditing:(UITextView *)textView{

    CGRect textFieldRect =

    [self.view.window convertRect:textView.bounds fromView:textView];

    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;

    }

    

    UIInterfaceOrientation orientation =

    [[UIApplication sharedApplication] statusBarOrientation];

    if (orientation == UIInterfaceOrientationPortrait ||

        orientation == UIInterfaceOrientationPortraitUpsideDown)

    {

        animatedDistance = floor(PORTRAIT_KEYBOARD_HEIGHT * heightFraction);

    }

    else

    {

        animatedDistance = floor(LANDSCAPE_KEYBOARD_HEIGHT * heightFraction);

    }

    

    CGRect viewFrame = self.view.frame;

    viewFrame.origin.y -= animatedDistance;

    

    [UIView beginAnimations:nil context:NULL];

    [UIView setAnimationBeginsFromCurrentState:YES];

    [UIView setAnimationDuration:KEYBOARD_ANIMATION_DURATION];

    

    [self.view setFrame:viewFrame];

    

    [UIView commitAnimations];

}

- (void)textViewDidEndEditing:(UITextView *)textView{

    CGRect viewFrame = self.view.frame;

    viewFrame.origin.y += animatedDistance;

    

    [UIView beginAnimations:nil context:NULL];

    [UIView setAnimationBeginsFromCurrentState:YES];

    [UIView setAnimationDuration:KEYBOARD_ANIMATION_DURATION];

    

    [self.view setFrame:viewFrame];

    

    [UIView commitAnimations];

}

- (void)textFieldDidBeginEditing:(UITextField *)textField

{

   // signup.enabled=NO;

    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;

    }

    

    UIInterfaceOrientation orientation =

    [[UIApplication sharedApplication] statusBarOrientation];

    if (orientation == UIInterfaceOrientationPortrait ||

        orientation == UIInterfaceOrientationPortraitUpsideDown)

    {

        animatedDistance = floor(PORTRAIT_KEYBOARD_HEIGHT * heightFraction);

    }

    else

    {

        animatedDistance = floor(LANDSCAPE_KEYBOARD_HEIGHT * heightFraction);

    }

    

    CGRect viewFrame = self.view.frame;

    viewFrame.origin.y -= animatedDistance;

    

    [UIView beginAnimations:nil context:NULL];

    [UIView setAnimationBeginsFromCurrentState:YES];

    [UIView setAnimationDuration:KEYBOARD_ANIMATION_DURATION];

    

    [self.view setFrame:viewFrame];

    

    [UIView commitAnimations];

}

- (void)textFieldDidEndEditing:(UITextField *)textField

{

    CGRect viewFrame = self.view.frame;

    viewFrame.origin.y += animatedDistance;

    

    [UIView beginAnimations:nil context:NULL];

    [UIView setAnimationBeginsFromCurrentState:YES];

    [UIView setAnimationDuration:KEYBOARD_ANIMATION_DURATION];

    

    [self.view setFrame:viewFrame];

    

    [UIView commitAnimations];

}

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range

 replacementText:(NSString *)text {

    

    // Any new character added is passed in as the "text" parameter

    

    if([text isEqualToString:@"\n"]) {

        

        // Be sure to test for equality using the "isEqualToString" message

        

        [textView resignFirstResponder];

        

        // Return FALSE so that the final '\n' character doesn't get added

        

        return NO;

    }

    

    // For any other character return TRUE so that the text gets added to the view

    

    return YES;

}

- (BOOL)textFieldShouldReturn:(UITextField *)textField

{

   // signup.enabled=YES;

    [textField resignFirstResponder];

    return YES;

}