CODEWITHSUNDEEP
iosuitableviewuitextview
KVISH
KVISH

Reputation: 13178

UITextView grow inside of a UITableViewCell

I've seen a lot of questions related to this on SO, however, none of them pertain to my question.

I'm to create an app that has a messaging functionality. Similar to how Apple has Mail and LinkedIn has it's Mail feature in their app, I would like to have a UITableView with 3 rows. The third row has the UITextView which has to grow as the user types. My code is below:

- (void)textViewDidChange:(UITextView *)textView {
    if (bodyText.contentSize.height > currentContentHeight) {
        currentContentHeight = bodyText.contentSize.height;

        [tblView beginUpdates];
        [tblView endUpdates];

        [bodyText setFrame:CGRectMake(0, 0, 310.0, currentContentHeight)];

        bodyText.selectedRange = NSMakeRange(textView.text.length - 1, 0);

    } else {
        currentContentHeight = minimumContentHeight;

        [tblView beginUpdates];
        [tblView endUpdates];
    }
}

When I press return on the iPhone it goes down and works flawlessly. Problem is that if I goto the center or any other middle part of the UITextView, it seems to create funny behaviour because it's getting the contentSize incorrectly. For example:

Is there a way to calculate it based on all of the text currently? Please let me know if there is anything I have missed above. I read the following extensively:

http://dennisreimann.de/blog/uitextview-height-in-uitableviewcell/

https://stackoverflow.com/questions/985394/growing-uitextview-and-uitableviewcell

UITextView inside a UITableViewCell

How do I size a UITextView to its content?

Upvotes: 1

Views: 1024

Answers (1)

KVISH
KVISH

Reputation: 13178

I edited the code above with the following and it's working for me:

- (void)textViewDidChange:(UITextView *)textView {    
    // Get the number of lines in the current view
    NSUInteger lines = textView.text.length;
    if ((lines * 25) > currentContentHeight && (lines * 25) >= minimumContentHeight && bodyText.contentSize.height > minimumContentHeight) {

        currentContentHeight = bodyText.contentSize.height;

    } else if (lines < 5){
        currentContentHeight = minimumContentHeight;
    }

    [tblView beginUpdates];
    [tblView endUpdates];

    [bodyText setFrame:CGRectMake(5, 5, 310, currentContentHeight)];

    bodyText.selectedRange = [bodyText selectedRange];
}

I set the currentContentHeight equal to the minimumContentHeight in the beginning based on the size of the phone.

Upvotes: 2

Related Questions