Resize and saving an image to disk in Monotouch
- by Chris S
I'm trying to resize an image loaded from disk - a JPG or PNG (I don't know the format when I load it) - and then save it back to disk.
I've got the following code which I've tried to port from objective-c, however I've got stuck on the last parts. Original Objective-C.
This may not be the best way of achieving what I want to do - any solution is fine for me.
int width = 100;
int height = 100;
using (UIImage image = UIImage.FromFile(filePath))
{
CGImage cgimage = image.CGImage;
CGImageAlphaInfo alphaInfo = cgimage.AlphaInfo;
if (alphaInfo == CGImageAlphaInfo.None)
alphaInfo = CGImageAlphaInfo.NoneSkipLast;
CGBitmapContext context = new CGBitmapContext(IntPtr.Zero,
width,
height,
cgimage.BitsPerComponent,
4 * width,
cgimage.ColorSpace,
alphaInfo);
context.DrawImage(new RectangleF(0, 0, width, height), cgimage);
/*
Not sure how to convert this part:
CGImageRef ref = CGBitmapContextCreateImage(bitmap);
UIImage* result = [UIImage imageWithCGImage:ref];
CGContextRelease(bitmap); // ok if NULL
CGImageRelease(ref);
*/
}
