How to move View up when Keyboard come over the TextFields? - ios

Question

i am having 10 textfields over the scrollView. I want to scroll the view when keyboard Appears on Textfileds . Here i am using the below code to achieve this. But it is moving the screen up from the First Textfield my requirement is i want to move view up when keyboard come over the textfield only otherwise i don't want to move the view up.
Please help me.
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
CGPoint scrollPoint = CGPointMake(0, textField.frame.origin.y);
[myScrollView setContentOffset:scrollPoint animated:YES];
}

Answer 1

Something like this maybe? (You may have to readapt it for landscape mode)
- (void)textFieldDidBeginEditing:(UITextField *)textField
{
CGFloat keyboardHeight = 216.0;
CGFloat viewHeight = myScrollView.frame.size.height;
BOOL covering = (textField.frame.origin.y - myScrollView.contentOffset.y) > (viewHeight - keyboardHeight);
if(covering) {
CGPoint scrollPoint = CGPointMake(0, textField.frame.origin.y);
[myScrollView setContentOffset:scrollPoint animated:YES];
}
}

Answer 2

There are ready solutions for this.
You could use TPKeyboardAvoiding to accomplish your mission.

Answer 3

Use keyboard notifications to be alerted when the keyboard is presented e.g.:
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardWillShow:) name:UIKeyboardWillShowNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardWillHide:) name:UIKeyboardWillHideNotification object:nil];
(Also remove these in viewWillDissapear:
[[NSNotificationCenter defaultCenter] removeObserver:UIKeyboardWillShowNotification];
[[NSNotificationCenter defaultCenter] removeObserver:UIKeyboardWillHideNotification];
Then in the functions respectively:
- (void)keyboardWillShow:(NSNotification *) notification {
CGRect appFrame = YOUR_VIEWS_FRAME
CGRect keyboardFrame = [notification.userInfo[UIKeyboardFrameEndUserInfoKey] CGRectValue];
keyboardFrame = [self.view.window convertRect:keyboardFrame toView:self.view];
UITextField *current = THE_CURRENT_RESPONDER
CGRect relativeFrame = [self.view convertRect:current.frame fromView:current.superview];
float difference = 0.0;
//Here we give it a 20 pixel padding between the top of the keyboard and the bottom of the text field.
if (CGRectIntersectsRect(relativeFrame, keyboardFrame))
difference = appFrame.size.height - keyboardFrame.size.height - 20 - relativeFrame.size.height - current.frame.origin.y;
difference = difference < 0 ? difference : 0;
NSTimeInterval duration = [notification.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue];
[UIView animateWithDuration:duration animations:^{
[self.scrolLView setContentOffset:CGPointMake(0, difference);
} completion:^(BOOL finished) {
}];
}
And:
- (void)keyboardWillHide:(NSNotification *) notification {
NSTimeInterval duration = [notification.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue];
[UIView animateWithDuration:duration animations:^{
[self.scrolLView setContentOffset:CGPointZero];
} completion:^(BOOL finished) {
}];
}