UITextView autoscroll to last line

Question

When writing in a UITextView more text than can fit entirely inside it, the text will scroll up and the cursor will often place itself one or two lines above the view's bottom line. This is a bit frustrating as I want my application to make good use of the entire height of the text view.

Basically what I want is to configure the UITextView to write up to it's lowest part and not use it just for scrolling.

I've seen some similar questions here, here and here. However I've not seen a proper solution yet.

Thanks

score 8 · Accepted Answer · answered Dec 17 '09 at 14:26

8

I've a slightly different implementation (I want to disable scrolling), but I also had to stop the cursor jumping out of my UITextView. To do this, I implemented a null scrollRectToVisible in my UITextView subclass. Like this:

- (void)scrollRectToVisible:(CGRect)rect animated:(BOOL)animated
{
// do nothing. This fixes the cursor jumping above the field defect.
}

answered Dec 17 '09 at 14:26

Jane Sales

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That's a good hint. I can probably re-implement this method to make the text view auto scroll exactly the way I need it. – Mihai Damian Dec 17 '09 at 14:46

score 2 · Answer 2 · answered Jan 22 '11 at 22:24

2

excellent solution is in subclass UITextView add lines

-(void) setContentOffset:(CGPoint)contentOffset {
    [self setContentInset:UIEdgeInsetsZero];
    [super setContentOffset:contentOffset];
}

It's work!

answered Jan 22 '11 at 22:24

Zeine

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1

score 1 · Answer 3 · answered Mar 18 '13 at 07:46

1

use this

NSRange myRange=NSMakeRange(outPutTextView.text.length, 0);

[outPutTextView scrollRangeToVisible:myRange];

answered Mar 18 '13 at 07:46

Ashok

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score 0 · Answer 4 · edited Jun 04 '13 at 02:25

0

I've got the last line by setframe :

You can setframe to about a line height
When you are editing, in - (BOOL)textView:shouldChangeTextInRange:replacementText:,use scrollRangeToVisible:,the argument is selectedRange
When you end edit, setframe to the original size

edited Jun 04 '13 at 02:25

Diego D

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answered Jun 04 '13 at 02:05

user2184774

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score 0 · Answer 5 · answered Nov 27 '09 at 17:27

0

if I understand right, you can use

[textView setScrollEnabled:NO];

to disable scrolling. what about not to type when the cursor reached the lower margin... maybe it is not good solution but you can add some threshold value(maximum characters in the [textView text]) and return NO in

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range replacementText:(NSString *)text

delegate method of UITextView if [[textView text] length] > maxCharacters.

answered Nov 27 '09 at 17:27

Morion

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Perhaps I was not clear. I still want the view to be scrollable. But I also want to be able to write text on it's entire height. This is something that's not generally possible by default since the text will start bouncing up when you hit the last but least line (and I can tell the UITextView extends below this line by scrolling the text downwards). – Mihai Damian Nov 27 '09 at 19:33

score 0 · Answer 6 · answered Mar 16 '10 at 05:11

0

I find seem the property 'contentOffset' also can be use ...

answered Mar 16 '10 at 05:11

iXcoder

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UITextView autoscroll to last line

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