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[alones]

One is using Phoney's way (in fact, I've fixed Phoney's function considering width and height).

And the othere is using UIGraphicsBeginImageContext() and UIGraphicsGetImageFromCurrentImageContext().

F.Y.I, I've tested them.

Anyway resizing functions are as below,

#1 - using UIGraphicsBeginImageContext() and UIGraphicsGetImageFromCurrentImageContext()

-(UIImage*)resizedImage1:(UIImage*)inImage  inRect:(CGRect)thumbRect {
	// Creates a bitmap-based graphics context and makes it the current context.
	UIGraphicsBeginImageContext(thumbRect.size);
	[inImage drawInRect:thumbRect];
	
	return UIGraphicsGetImageFromCurrentImageContext();
}

#2 - updating Phoney's way

-(UIImage*)resizedImage2:(UIImage*)inImage  inRect:(CGRect)thumbRect { 
	
	CGImageRef			imageRef = [inImage CGImage];
	CGImageAlphaInfo	alphaInfo = CGImageGetAlphaInfo(imageRef);
	
	// There's a wierdness with kCGImageAlphaNone and CGBitmapContextCreate
	// see Supported Pixel Formats in the Quartz 2D Programming Guide
	// Creating a Bitmap Graphics Context section
	// only RGB 8 bit images with alpha of kCGImageAlphaNoneSkipFirst, kCGImageAlphaNoneSkipLast, kCGImageAlphaPremultipliedFirst,
	// and kCGImageAlphaPremultipliedLast, with a few other oddball image kinds are supported
	// The images on input here are likely to be png or jpeg files
	if (alphaInfo == kCGImageAlphaNone)
		alphaInfo = kCGImageAlphaNoneSkipLast;
	
	// Build a bitmap context that's the size of the thumbRect
	CGFloat bytesPerRow;
	
	if( thumbRect.size.width > thumbRect.size.height ) {
		bytesPerRow = 4 * thumbRect.size.width;
	} else {
		bytesPerRow = 4 * thumbRect.size.height;
	}
	
	CGContextRef bitmap = CGBitmapContextCreate(	
                NULL,
                thumbRect.size.width,		// width
                thumbRect.size.height,		// height
                8, //CGImageGetBitsPerComponent(imageRef),	// really needs to always be 8
                bytesPerRow, //4 * thumbRect.size.width,	// rowbytes
                CGImageGetColorSpace(imageRef),
                alphaInfo
        );
	
	// Draw into the context, this scales the image
	CGContextDrawImage(bitmap, thumbRect, imageRef);
	
	// Get an image from the context and a UIImage
	CGImageRef	ref = CGBitmapContextCreateImage(bitmap);
	UIImage*	result = [UIImage imageWithCGImage:ref];
	
	CGContextRelease(bitmap);	// ok if NULL
	CGImageRelease(ref);
	
	return result;
}