IOS开发－UI学习－NSMutableAttributedString（带属性的字符串）的使用

带属性的字符串：

 NSString *aa = @"hellochinaIloveYou!";
     NSMutableAttributedString *mas = [[NSMutableAttributedString alloc]initWithString:aa];

 //    设置字符串字属性
     UIFont *font = [UIFont fontWithName:@"Arial" size:35.0f];
     [mas addAttribute:NSFontAttributeName value:font range:NSMakeRange(, )];
 //    设置字体颜色
     [mas addAttribute:NSForegroundColorAttributeName value:[UIColor blueColor] range:NSMakeRange(, )];
 //    设置背景色
     [mas addAttribute:NSBackgroundColorAttributeName value:[UIColor grayColor] range:NSMakeRange(, )];
 //    设置字符间距
     [mas addAttribute:NSKernAttributeName value:[NSNumber numberWithFloat:10.1] range:NSMakeRange(, )];
 //    设置删除线线型
     [mas addAttribute:NSStrikethroughStyleAttributeName value:[NSNumber numberWithInt:] range:NSMakeRange(, )];
 //    设置删除线颜色
     [mas addAttribute:NSStrikethroughColorAttributeName value:[UIColor greenColor] range:NSMakeRange(, )];
 //    设置字体倾斜
     [mas addAttribute:NSObliquenessAttributeName value:[NSNumber numberWithFloat:0.6] range:NSMakeRange(, )];
 //    拉伸字体
     [mas addAttribute:NSExpansionAttributeName value:[NSNumber numberWithFloat:0.9] range:NSMakeRange(, )];
 //    设置下划线
     [mas addAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithInt:NSUnderlineStyleSingle] range:NSMakeRange(, )];
 //    设置下划线颜色
     [mas addAttribute:NSUnderlineColorAttributeName value:[UIColor whiteColor] range:NSMakeRange(, )];
 //    设置搂空字体
     [mas addAttribute:NSStrokeWidthAttributeName value:[NSNumber numberWithInt:] range:NSMakeRange(, )];
 //    搂空字体设置颜色
     [mas addAttribute:NSStrokeColorAttributeName value:[UIColor redColor] range:NSMakeRange(, )];
 //    设置阴影
     NSShadow *shadow = [[NSShadow alloc]init];
     shadow.shadowBlurRadius = ;
     shadow.shadowColor = [UIColor colorWithRed:0.502 green:0.023 blue:0.134 alpha:1.000];
     shadow.shadowOffset = CGSizeMake(-0.1, 0.1);
     [mas addAttribute:NSShadowAttributeName value:shadow range:NSMakeRange(, )];
 //    设置印刷字体
     [mas addAttribute:NSTextEffectAttributeName value:NSTextEffectLetterpressStyle range:NSMakeRange(, )];

     UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(, , , )];
 //    label.text = mas.string;
     label.attributedText =mas;

     [self.view addSubview:label];