self .title = @ "For iOS 6 & later" ; NSMutableAttributedString *str = [[ NSMutableAttributedString alloc] initWithString:@ "Using NSAttributed String" ]; [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-BoldItalicMT" size:30.0] range: NSMakeRange (0, 5)]; [str addAttribute: NSFontAttributeName value:[UIFont fontWithName:@ "HelveticaNeue-Bold" size:30.0] range: NSMakeRange (6, 12)]; [str addAttribute: NSFontAttributeName value:[UIFont fontWithName:@ "Courier-BoldOblique" size:30.0] range: NSMakeRange (19, 6)]; attrLabel.attributedText = str; |
NSMakeRange作用:
NSRange NSMakeRange (
NSUInteger loc,
NSUInteger len
);
这是官方得接口描述。loc 为location缩写,len 表示长度。作用:在loc指定得位置开始往后获取len长度个得元素。