获取UILabel的numberOfLine

    CGFloat textH = [self.label.text boundingRectWithSize:CGSizeMake(width, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:15]} context:nil].size.height;

    CGFloat lineHeight = self.label.font.lineHeight;

    NSInteger lineCount = textH / lineHeight;

    NSLog(@"-----:%ld  %.f",lineCount,lineHeight);

如果希望UILabel的右面添加更多，比方说显示3行，可以给UILabel设置

self.label.numberOfLines = 3;

在获取UILabel实际的numberOfLine，如果大于，则显示更多按钮

获取u

获取UILabel的numberOfLine