Resize image and maintain its aspect ratio in iOS

1
votes

I am trying to select an image from photo library, this is the photo enter image description here which I have downloaded from net and is stored in my photo lib.

So now I want to give user an option to select an image from photo lib and apply as a backgroundImage throught my app, but when I do it, I get the image this way on my iphone screen

enter image description here

Actually the image has been filled the screen, because the content mode specified is "scaleToFill".

1) I want to know how to make this image maintain its aspect ratio and also fill the screen?

Regards Ranjit

2
iosuiimageuikituiimagepickercontroller
Aspectfit can be used - Aanabidden
are you using storyboard for that? - Pravin Tate

2 Answers

2
votes

check this blog. use these two files

UIImage+Resize.h

UIImage+Resize.m

UIImage *image = [UIImage imageNamed:@"SomeImage-900x675"]; // SomeImage-900x675.png 
CGFloat targetWidth = 320.0;
CGFloat scaleFactor = targetWidth / image.size.width; 
CGFloat targetHeight = image.size.height * scaleFactor; 
CGSize targetSize = CGSizeMake(targetWidth, targetHeight);
UIImage *scaledImage = [image resizedImage:targetSize interpolationQuality:kCGInterpolationHigh];
0
votes

though your image is taking all the screen size, Your image size is biger...You will try by scaling image with following resolutions 320*480, 640*960, 1240*2208