Crash issue while picking a large size image from the iphone library in iPhone 3G

i am getting a crash i开发者_如何学运维ssue(it is due to low memory) while picking up the a large image (3.5 MB) from the photo library in iphone 3G. The problem is only with iphone 3G while it is working fine in iPhone 3GS and iPhone 4. I am saving this image to my iphone library from my email, and it seems that the image saved to the library is not getting optimized. Is this a bug ? Can anybody suggest me a solution. It is possible to restrict the user from picking very large image from the library in iphone 3G. I tried picking up this large image using the sample application given by apple, and it is crashing even with that.

Is the crash happening when you pick the image, or when you try to put the image in a UIImageView? If the latter, you may need to scale the image to a smaller resolution before placing it in the UIImageView. I have seen recommendations that image sizes greater than 1024 x 1024 should be avoided in UIImageView.

You can do this using code like the following:

if (image.size.width > 1024 || image.size.height > 1024) {
    // resize the image
    float actualHeight = image.size.height;
    float actualWidth = image.size.width;
    float imgRatio = actualWidth/actualHeight;
    float maxRatio = self.frame.size.width/self.frame.size.height;

    if(imgRatio < maxRatio){
        imgRatio = self.frame.size.height / actualHeight;
        actualWidth = imgRatio * actualWidth;
        actualHeight = self.frame.size.height;
    } else {
        imgRatio = self.frame.size.width / actualWidth;
        actualHeight = imgRatio * actualHeight;
        actualWidth = self.frame.size.width;
    }
    CGRect rect = CGRectMake(0.0, 0.0, actualWidth, actualHeight);
    UIGraphicsBeginImageContext(rect.size);
    [image drawInRect:rect];
    imageToDraw = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
}

Note that imageToDraw is a UIImage * declared outside of this code, and is the final image that can be put into the UIImageView. This code came from a method in a custom view that I wrote, so where you see self.frame in the code, you can replace with whatever frame you are scaling the image into.