How can I make text in a UILabel shrink font size

Question

If a UILabel contains too much text, how can I setup my label so that it shrinks font-sizes?

Here is how I am setting up my UILabel:

     descriptionLabel = [[UILabel alloc] initWithFrame:CGRectMake(200, 30, 130, 150)];     [descriptionLabel setFont:[Utils getSystemFontWithSize:14]];     [descriptionLabel setBackgroundColor:[UIColor clearColor]];     [descriptionLabel setTextColor:[UIColor whiteColor]];     descriptionLabel.numberOfLines = 1;     [self addSubview:descriptionLabel]; 

Answer 1

descriptionLabel.adjustsFontSizeToFitWidth = YES; descriptionLabel.minimumFontSize = 10.0; //adjust to preference obviously 

The following example is tested and verified on iPhone Simulator 3.1.2:

UILabel *descriptionLabel = [[UILabel alloc] initWithFrame:CGRectMake(90, 0, 200, 30)];  descriptionLabel.font = [UIFont systemFontOfSize:14.0]; descriptionLabel.minimumFontSize = 10.0; descriptionLabel.adjustsFontSizeToFitWidth = YES; descriptionLabel.numberOfLines = 1; descriptionLabel.text = @"supercalifragilisticexpialidocious even thought he sound of it is something quite attrocious"; 

Answer 2

To resize the text in a multi-line UILabel, you can use this helper method (based on code from 11 Pixel Studios):

+ (void)resizeFontForLabel:(UILabel*)aLabel maxSize:(int)maxSize minSize:(int)minSize {   // use font from provided label so we don't lose color, style, etc  UIFont *font = aLabel.font;   // start with maxSize and keep reducing until it doesn't clip  for(int i = maxSize; i >= minSize; i--) {   font = [font fontWithSize:i];   CGSize constraintSize = CGSizeMake(aLabel.frame.size.width, MAXFLOAT);    // This step checks how tall the label would be with the desired font.   CGSize labelSize = [aLabel.text sizeWithFont:font constrainedToSize:constraintSize lineBreakMode:UILineBreakModeWordWrap];   if(labelSize.height <= aLabel.frame.size.height)    break;  }  // Set the UILabel's font to the newly adjusted font.  aLabel.font = font; }