Getting CGSize for NSString? - iphone

Question

I am trying to get a CGSize for an NSString but I am having issues. Here is the code I am using:
CGFloat actualMessageFontSize;
CGSize messageSize =
[message sizeWithFont:[UIFont fontWithName:#"Helvetica-Bold"
size:14.0f]
minFontSize:14.0f
actualFontSize:&actualMessageFontSize
forWidth:(alertViewWidth - textIndent)
lineBreakMode:NSLineBreakByWordWrapping];
I NSLog the CGSize after this code and the height doesn't change, even if I put a massive NSString into it. Do you know why this might happen and or what I should try instead?
Thanks.

Answer 1

use this method and
-(float) calculateHeightOfTextFromWidth:(NSString*) text: (UIFont*)withFont: (float)width :(UILineBreakMode)lineBreakMode
{
[text retain];
[withFont retain];
CGSize suggestedSize = [text sizeWithFont:withFont constrainedToSize:CGSizeMake(width, FLT_MAX) lineBreakMode:lineBreakMode];
[text release];
[withFont release];
return suggestedSize.height;
}
and use it like bellow... i use this for UILable see the code..
UILabel *lblAddress = [[UILabel alloc]init];
[lblAddress setFrame:CGRectMake(110, 31, 200, 31)];
lblAddress.text = #"ABDKFNKG KKGK jfnjgdf gdklfg fldgmfkgml f";
lblAddress.lineBreakMode = UILineBreakModeWordWrap;
lblAddress.numberOfLines = 0;///write this line for multiple line and set 0 or anything lese
lblAddress.font = [UIFont fontWithName:#"Helvetica" size:12];
lblAddress.frame = CGRectMake(lblAddress.frame.origin.x, lblAddress.frame.origin.y,
200,[self calculateHeightOfTextFromWidth:lblAddress.text :lblAddress.font :200 :UILineBreakModeWordWrap] );
lblAddress.textColor = [UIColor darkGrayColor];
[self.view addSubview:lblAddress];

Answer 2

You have change frame of UILabel or UITextView which of them might be using to change accordingly.
CGFloat actualMessageFontSize = 12.0;
CGSize messageSize = [message sizeWithFont:[UIFont fontWithName:#"Helvetica-Bold" size:14.0f] minFontSize
//set frame accordingly
yourLabel.frame = CGReactMake(yourLabel.frame.origin.x,yourLabel.frame.origin.y,messageSize.width,messageSize.wiheight,);