CODEWITHSUNDEEP
iosuiscrollviewuitextview
svjim
svjim

Reputation: 211

Strange Behavior in Scrolling UIScrollView to UITextView hidden by keyboard

I have looked at a number of posts here on scrolling and unhiding a UITextField and believed that the same code should work for a UITextView, but that seems not to be the case. The first issue I encountered was that the sample app I have is an iPad app supporting landscape orientation only. The keyboard size returned from the notification had the height and width of the keyboard reversed.

Next, while I can get the scrollview to scroll the textview, it does not reveal all of it and in fact the amount of the textview that is shown is dependent on where I tap in the textview. It is more like it is scrolling to where the cursor will be which is not what I want.

Here is the code I am using. It was taken from an example, the only real change is that a UITextView is used instead of a UITextField. If the only thing I do is to replace the textview with a textfield it works fine.

- (void)keyboardWasShown:(NSNotification*)aNotification
{
    NSDictionary* info = [aNotification userInfo];
    CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
    UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.width, 0.0);
    _myscrollview.contentInset = contentInsets;
    _myscrollview.scrollIndicatorInsets = contentInsets;
    CGRect aRect = self.view.frame;
    aRect.size.height -= kbSize.width;
    DebugLog(@"textview = %@", _textview);

    if (!CGRectContainsPoint(aRect, _textview.frame.origin) ) {
        CGPoint scrollPoint = CGPointMake(0.0, _textview.frame.origin.y-kbSize.width);
        [_myscrollview setContentOffset:scrollPoint animated:YES];
    }
}

Upvotes: 0

Views: 1096

Answers (2)

krishnanunni
krishnanunni

Reputation: 510

Apple has provided the correct method here (check the Listing 4-1). It works for both UITextField and UITextView. We do not need to edit the range or anything else. It should be the scrollview that needs handling. The one marked as 'Answered' may work, but we better follow the creator's method!

Upvotes: 1

Mark McCorkle
Mark McCorkle

Reputation: 9414

If you are just wanting to scroll to the top of your UITextView you can do that by

[textview scrollRectToVisible:CGRectMake(0,0,1,1) animated:YES];

Try messing with the below method. Perhaps set it to the height of the textView. Can you post a screenshot of the issue?

- (void)textViewDidChangeSelection:(UITextView *)textView
{
    [textView setSelectedRange:NSMakeRange(0, 0)];
}

Upvotes: 1

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