Adapt the UILabel height to its content text

adaptHeightViewWithText.m

- (void) adaptHeightView:(UILabel *)label withText:(NSString *)text
{
    // First we must to set the text into the label
    [label setText:text];
    // Get the label frame with the entire text
    CGRect frame = [label frame];
    // Get the label size
    // 1. Set the label font
    // 2. Add size restrictions, set the label width and put a maximun height, in this case 9999
    // 3. Establish the line break mode
    // 4. Don't forget to set the number of lines to 0 in the UILabel
    CGSize size = [label.text sizeWithFont:label.font
                                 constrainedToSize:CGSizeMake(frame.size.width, 9999)
                                     lineBreakMode:UILineBreakModeWordWrap];
    // Finally, establish the new height to the label frame
    frame.size.height = size.height;
    [label setFrame:frame];
}