How do I save a reference to a specific photo on iPhone for loading without picker?

Question

A user can select a photo from their library using the image picker - I want to remember this selection and display this picture in future without the user having to pick it. How can I reference the specific photo or is there a way I can copy the photo to my application's storage?

Answer 1

you can save the selected image by converting it into NSData object and then writing it on the iphone file system under your app's document directory like this:

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo
{
NSData *imageData = UIImagePNGRepresentation(image);

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];

NSString *filename = [documentsDirectory stringByAppendingPathComponent:@"SavedImage"];

[imageData writeToFile:filename atomically:NO];
}

Answer 2

Hi Raj,

Can I want to show user that they using a photo but also want to store that using the above technique. Here's my code:

 - (void)imagePickerController:(UIImagePickerController *)picker 
    didFinishPickingImage:(UIImage *)image
              editingInfo:(NSDictionary *)editingInfo {
imageView.image = image;

[picker dismissModalViewControllerAnimated:YES];

}
 - (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {

[picker dismissModalViewControllerAnimated:YES];
}

Can I place your code in after my "imageView.image =image?" line?