UILabel How to set background image

UILabel *myLabel=[[UILabel alloc] initWithFrame:CGRectMake(0, 0, 320, 20)];

UIImage *img = [UIImage imageNamed:@"a.png"];
CGSize imgSize = myLabel.frame.size;

UIGraphicsBeginImageContext( imgSize );
[img drawInRect:CGRectMake(0,0,imgSize.width,imgSize.height)];
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

myLabel.backgroundColor = [UIColor colorWithPatternImage:newImage];

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