Here’s how you can resize the image while preserving its aspect ratio. The code below is from a category for UIImage
:
+ (UIImage*)imageWithImage:(UIImage *)image
scaledToSize:(CGSize)newSize
{
float heightToWidthRatio = image.size.height / image.size.width;
float scaleFactor = 1;
if(heightToWidthRatio > 0) {
scaleFactor = newSize.height / image.size.height;
} else {
scaleFactor = newSize.width / image.size.width;
}
CGSize newSize2 = newSize;
newSize2.width = image.size.width * scaleFactor;
newSize2.height = image.size.height * scaleFactor;
UIGraphicsBeginImageContext(newSize2);
[image drawInRect:CGRectMake(0,0,newSize2.width,newSize2.height)];
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return newImage;
}
1
solved How can I resize the UIImage to specific size