根据高度调整UIImageView宽度

Question

I have hundreds of images in pdf format to use in my app. I am using an UIImage-PDF( https://github.com/mindbrix/UIImage-PDF ) category to show pdfs as images in my app. I am using this code

imageView = [[ UIImageView alloc ] initWithFrame:CGRectMake(100, 200, 100, 100)]; 

to create an imageView and then adding image like that

[imageView setImage:[ UIImage imageWithPDFNamed:[NSString stringWithFormat:@"%@.pdf",imageName] atSize:CGSizeMake( 100, 100) ]];

Its working fine for square images, the problem is when width is greater than height. Images are shrunk. What I want is, it should adjust image's width according to height. How can I do that?

Answer 1

将Imageview的contentMode设置为UIViewContentModeScaleAspectFit ：

imageView.contentMode = UIViewContentModeScaleAspectFit;

Answer 2

You need to use

imageView.contentMode = UIViewContentModeScaleAspectFit;

Or

imageView.contentMode = UIControlContentHorizontalAlignmentFill

Answer 3

try this,

UIImage *image =[ UIImage imageWithPDFNamed:[[NSString stringWithFormat:@"%@.pdf",imageName]];
[imageView setImage:image atSize:CGSizeMake( img.size.width, img.size.height) ]];