move UIScrollView up when UITextField is selected

Question

subview assigned to the UIScrollView. when the UITextField is selected UIScrollView should move up. I tried with below code but its not working.

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

    if( textField == citytextfield)
    {
        [UIView beginAnimations:nil context:NULL];
        [UIView setAnimationDuration:0.4];
        //set Y according to keyBoard height
        [_scrolling setFrame:CGRectMake(0.0,-220.0,320.0,460.0)];

        [UIView commitAnimations];
    }



}

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

    [textField resignFirstResponder];
    [UIView beginAnimations:nil context:NULL];
    [UIView setAnimationDuration:0.5];
    [_scrolling setFrame:CGRectMake(0.0,0.0,320.0,460.0)];
    [UIView commitAnimations];
}

Answer 1

使用UIScrollView setContentOffset方法使其向上滚动，您需要将值50更改为所需的值。

[_scrolling setContentOffset:CGPointMake(0,50) animated:YES];

Answer 2

download the tpkeyboardavoidingscrollview.
give your scrollview's class name to tpkeyboardavoidingscrollview.

  @property (weak, nonatomic) IBOutlet TPKeyboardAvoidingScrollView *scrollView;

set the property and give the connection to scrollview.
In your viewcontroller.h

#import "TPKeyboardAvoidingScrollView"

then check it.