Ios Swift：删除Aspect Fit ImageView中的空白

如何删除一些小图像前后的空白

有些图像与下面的示例一样工作正常，有些图像上下都有巨大的空间。 我正在使用Parse，因此我认为无法直接访问imageView：

// upload Image To Parse as PFImageView
   let imgFile = object?.objectForKey("ImgView") as? PFFile
        cell.ImgView.file = imgFile
        cell.questionImgView.loadInBackground()
       // cell.questionImgView.clipsToBounds = true
      cell. cell.ImgView.clipsToBounds.contentMode = UIViewContentMode.ScaleAspectFit

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您只需对UIButton执行以下操作，即可为其提供多行和不同字体：

NSMutableParagraphStyle *style = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
[style setAlignment:NSTextAlignmentCenter];
[style setLineBreakMode:NSLineBreakByWordWrapping];

UIFont *font1 = [UIFont fontWithName:@"HelveticaNeue-Medium" size:20.0f];
UIFont *font2 = [UIFont fontWithName:@"HelveticaNeue-Light"  size:20.0f];
NSDictionary *dict1 = @{NSUnderlineStyleAttributeName:@(NSUnderlineStyleSingle),  
                    NSFontAttributeName:font1};
NSDictionary *dict2 = @{NSUnderlineStyleAttributeName:@(NSUnderlineStyleNone),    
                    NSFontAttributeName:font2};

NSMutableAttributedString *attString = [[NSMutableAttributedString alloc] init];
[attString appendAttributedString:[[NSAttributedString alloc] initWithString:@"LINE 1\n"    attributes:dict1]];
[attString appendAttributedString:[[NSAttributedString alloc] initWithString:@"line 2"      attributes:dict2]];
[[self buttonToStyle] setAttributedTitle:attString forState:UIControlStateNormal];
[[[self buttonToStyle] titleLabel] setNumberOfLines:0];
[[[self buttonToStyle] titleLabel] setLineBreakMode:NSLineBreakByWordWrapping];

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来源：

这是课程吗？课程号，我不知道你的意思是什么？：）几天前也出现了同样的问题我不确定这个答案是否适合我的问题？！