方法一：

UILabel *mindName = [[UILabel alloc]initWithFrame:kCR(0, 0, 25,40)];                mindName.text = @"苏\n小\n明";        mindName.numberOfLines = [mindName.text length];

方法二：

//        NSString *text = @"一";//        NSString *strText = @"苏得强";//        UIFont *font = [UIFont systemFontOfSize:12];//        CGSize sizeWord = [text sizeWithFont:font constrainedToSize:CGSizeMake(320, 2000.0) lineBreakMode:UILineBreakModeWordWrap];//        CGFloat w = sizeWord.width;//一个汉字的宽度//        CGSize sizeStr = [strText sizeWithFont:font constrainedToSize:CGSizeMake(w, 2000.0) lineBreakMode:UILineBreakModeWordWrap];//        CGFloat h = sizeStr.height;//        //        UILabel *aLabel = [[UILabel alloc]initWithFrame:kCR(0, 0, w, h)];//        aLabel.text = strText;//        aLabel.backgroundColor = [UIColor clearColor];//        aLabel.textColor = [UIColor whiteColor];//        aLabel.numberOfLines = 0;//        [aView addSubview:aLabel];