UIImageのリサイズ方法

UIImageResize

//UIImageのリサイズ
- (UIImage *)resizeImage:(UIImage *)image rect:(CGRect)rect
{
    UIGraphicsBeginImageContextWithOptions(rect.size, NO, 0.0);
    [image drawInRect:rect];
    UIImage *resizedImage = UIGraphicsGetImageFromCurrentImageContext();
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextSetInterpolationQuality(context, kCGInterpolationHigh);
    UIGraphicsEndImageContext();
    return resizedImage;
}