添加中劃線:
UILabel* strikeLabel = [[UILabelalloc] initWithFrame:(CGRectMake(10,10,50,30))];NSString*textStr = [NSStringstringWithFormat:@"%@元", primeCost];//中劃線NSDictionary*attribtDic = @{NSStrikethroughStyleAttributeName: [NSNumbernumberWithInteger:NSUnderlineStyleSingle]};NSMutableAttributedString*attribtStr = [[NSMutableAttributedStringalloc]initWithString:textStr attributes:attribtDic];// 賦值strikeLabel.attributedText= attribtStr;? [self.viewaddSubview:strikeLabel];
UILabel*underlineLabel = [[UILabelalloc] initWithFrame:(CGRectMake(10,10,50,30))];NSString*textStr = [NSStringstringWithFormat:@"%@元", primeCost];// 下劃線NSDictionary*attribtDic = @{NSUnderlineStyleAttributeName: [NSNumbernumberWithInteger:NSUnderlineStyleSingle]};NSMutableAttributedString*attribtStr = [[NSMutableAttributedStringalloc]initWithString:textStr attributes:attribtDic];//賦值underlineLabel.attributedText= attribtStr;? [self.viewaddSubview:underlineLabel];
但是 我發現到了ios10以后 該方法就失效了。根本原因：Label上的文字只要包含有“中文”，富文本字符串的中劃線就會失效，我們可通過以下方式解決。
讓富文本支持“中文”:
NSString*market = [NSStringstringWithFormat:@"￥%@",@"500"];
NSMutableAttributedString *attributeMarket = [[NSMutableAttributedString alloc] initWithString:market];
[attributeMarket setAttributes:@{NSStrikethroughStyleAttributeName: [NSNumbernumberWithInteger:NSUnderlineStyleSingle], NSBaselineOffsetAttributeName : @(NSUnderlineStyleSingle)} range:NSMakeRange(0,market.length)];
_marketLabel.attributedText= attributeMarket;
到此，目前你可以按照以上方式來解決，相信蘋果會在下一版本解決這個bug。
