XZ_iOS之block封装代码块

使用block封装一段代码，

  NSString *textSupport = [NSString  stringWithFormat:@"赞 0"];

//  让文字是深黑色

    NSMutableAttributedString *(^makeDarkGrayColor)(NSString *,NSInteger) = ^(NSString *text,NSInteger length) {
        NSMutableAttributedString *attrStr = [[NSMutableAttributedString alloc]initWithString:text];
        [attrStr addAttribute:NSForegroundColorAttributeName value:[UIColor lightGrayColor] range:NSMakeRange(0, length)];
        return  attrStr;
    };
   

    // 赋值

    self. labelSupport.attributedText = makeDarkGrayColor(textSupport,1);