UILabel设置多种字体、颜色

NSMutableAttributedString *str = [[NSMutableAttributedString alloc] initWithString:@"Using NSAttributed String，try your best to test attributed string text"];
[str addAttribute:NSForegroundColorAttributeName value:[UIColor blueColor] range:NSMakeRange(0,5)];
[str addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(6,12)];
[str addAttribute:NSForegroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(19,6)];
[str addAttribute:NSFontAttributeName value:[UIFont fontWithName:@"Arial" size:30.0] range:NSMakeRange(0, 5)];
[str addAttribute:NSFontAttributeName value:[UIFont fontWithName:@"Arial" size:30.0] range:NSMakeRange(6, 12)];
[str addAttribute:NSFontAttributeName value:[UIFont fontWithName:@"Arial" size:30.0] range:NSMakeRange(19, 6)];

UILabel *attrLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 150, 320 - 40, 90)];
attrLabel.attributedText = str;
attrLabel.numberOfLines = 0;
[self.view addSubview:attrLabel];