UITextView dynamically resizing text box / cell

Question

I'm loading my UITextView from an XML feed so the text is constantly changing. I'm trying the following to resize the cell and text, and it resizes the cell but not the text view, it's just not displaying the text view, or sometimes just part of it.

Any tips along the right way will be really appreciated;

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {

    AssessObject *newObj1;
    newObj1=[totalArray objectAtIndex:indexPath.row];

    NSString *cellText = newObj1.routeText;

    UIFont *cellFont = [UIFont fontWithName:@"Helvetica" size:16.0];
    CGSize constraintSize = CGSizeMake(188.0, CGFLOAT_MAX);
    CGSize textViewSize = [cellText sizeWithFont:cellFont constrainedToSize:constraintSize lineBreakMode:UILineBreakModeWordWrap];


    return textViewSize.height + 200;


}

Answer 1

Check the AutoresizingMask of the UITextView you have added to your cell.

Make sure it is set so that it resizes with the cell (you can do this either in IB, or via code using the UIViewAutoresizingMaskFlexibleWidth|UIViewAutoresizingMaskFlexibleWidth value)

Answer 2

Set the textView size equal to textView's contentSize. Something like this:

CGRectMake(textView.frame.origin.x, textView.frame.origin.y, textView.frame.size.width, textView.contentSize.height);

I'm making the height of the textView equal to the height of it's contentView.

Answer 3

setup the font size, text content and frame rect of the UITextView, then [UITextView sizeToFit] to calculate the contentSize of UITextView, then calculate the row height with the size of contentSize.

Don't forget to resize the frame rect of UITextView;

Answer 4

I have used Bruno's idea to resize my TextView according to the amount of text, when I put it to the ScrollView. This is how I do this. A bunch of constants there, that you may not use. It is important to resize textView after adding it to the ScrollView.

    // Programmatic creation of scroll view layout 
NSString *text = @"Your text";
CGFloat textOffSetInColumn = 10;
CGFloat infoTextWidth = 196;
CGFloat infoOffsetVertical = 36;
CGFloat initialTextHeight = 50;

// Create textView with initial height
CGRect infoTextFrame = CGRectMake(textOffSetInColumn, infoOffsetVertical, infoTextWidth, initialTextHeight);
infoTextView = [[UITextView alloc] initWithFrame:infoTextFrame];
infoTextView.text = text;
[scrollView addSubview:infoTextView];

// Resize textView
CGFloat infoTextHeight = infoTextView.contentSize.height;
infoTextFrame = CGRectMake(textOffSetInColumn, infoOffsetVertical, infoTextWidth, infoTextHeight);
infoTextView.frame = infoTextFrame;

If you want to change the size of TextView and center it to the previous center, you can use this code:

   // Changing size of TextView and centering
    CGPoint center = self.categoryTextView.center;
    self.categoryTextView.frame = CGRectMake(_categoryTextView.frame.origin.x, _categoryTextView.frame.origin.y, _categoryTextView.frame.size.width, _categoryTextView.contentSize.height);
    self.categoryTextView.center = center;

Instead of categoryTextView use your own Outlet name.