scrollRangeToVisible: How to scroll to the beginning of an UITextView

Question

A beginner's headache: I am trying to scroll to the very top of my UITextView once the keyboard is dismissed. I had tried to extract an answer from here, but I'm afraid it didn't help much.

I thought I do this with scrollRectToVisible, but nothing happens. Then I thought I should try scrollRangeToVisible, but this crashed my app... I'm sure I've done something tremendously upsetting and wrong. I'd be very glad if somebody could help:

- (IBAction)hideKeyboard:(id)sender {

//[textView scrollRectToVisible:CGRectMake(0, 0, 0, 0) animated:YES];

NSRange range = NSMakeRange(textView.text.length - (textView.text.length+1),1);
[textView scrollRangeToVisible:range];

textView.scrollEnabled = NO;
[textView resignFirstResponder];}

EDIT:

updated code for anyone who encounters a similar problem:

- (IBAction)hideKeyboard:(id)sender {

//textView.scrollEnabled = NO;
[textView resignFirstResponder];

NSRange range = NSMakeRange(0,1);
[textView scrollRangeToVisible:range];

}

Solution

The range you're creating starts at -1! You can create your range as follows, it's easier:

NSRange range = NSMakeRange(0, 1);

This range starts at an index of 0 (first character) and spreads over 1 characters.