//lable字体大小自适应宽度

UILabel *lable = [[UILabel alloc]initWithFrame:CGRectMake(0, 100, 300, 100)];
    lable.numberOfLines = 0;
    lable.backgroundColor = [UIColor blueColor];
    lable.text = @"abchdh";
    lable.font = [UIFont systemFontOfSize:200];
    lable.adjustsFontSizeToFitWidth = YES;
    lable.baselineAdjustment = UIBaselineAdjustmentAlignCenters;
    [self.view addSubview:lable];

 

 

//富文本的设置

NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"已抢购 %@ 个",model.getNum]];

    [attributedString addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:14] range:NSMakeRange(0, getNumString.length -1)];

    [attributedString addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(4, getNumString.length - 6)];

    [_getNumLabel setAttributedText:attributedString];

//指定table,textView的行间距

NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];

    paragraphStyle.lineSpacing = 5;// 字体的行间距

    

    NSDictionary *attributes = @{

                                 NSFontAttributeName:[UIFont systemFontOfSize:13],

                                 NSParagraphStyleAttributeName:paragraphStyle

                                 };

    

    _contentTextView.attributedText = [[NSAttributedString alloc] initWithString:str attributes:attributes];

//动态lable高度

- (CGSize)contentSize:(UILabel *)lable {

    NSMutableParagraphStyle * paragraphStyle = [[NSMutableParagraphStyle alloc] init];

    paragraphStyle.lineBreakMode = lable.lineBreakMode;

    paragraphStyle.alignment = lable.textAlignment;

    

    NSDictionary * attributes = @{NSFontAttributeName : lable.font,

                                  NSParagraphStyleAttributeName : paragraphStyle};

    

    CGSize contentSize = [lable.text boundingRectWithSize:CGSizeMake(lable.frame.size.width, MAXFLOAT)

                                                 options:(NSStringDrawingUsesLineFragmentOrigin|NSStringDrawingUsesFontLeading)

                                              attributes:attributes

                                                 context:nil].size;

    return contentSize;

}

 

//指定区域内文字加横线

 

UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(20, 50, 200, 50)];
    [self.view addSubview:label];
    label.text = @"12.89";
    label.textAlignment = NSTextAlignmentCenter;
    label.textColor = [UIColor grayColor]; // 横线的颜色跟随label字体颜色改变
    NSMutableAttributedString *newPrice = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"￥%@",label.text]];
    [newPrice addAttribute:NSStrikethroughStyleAttributeName value:@(NSUnderlinePatternSolid | NSUnderlineStyleSingle) range:NSMakeRange(0, newPrice.length)];
    label.attributedText = newPrice;