I've been working on a simple application which allows the user to take a photo and store it in the camera roll for later use. To do this, I am using a UIImagePickerController, and the method UIImageWriteToSavedPhotosAlbum, which is working perfectly.
My question is: Is there any way to store the path to the image in the Camera Roll so that I can use that to call the image again later? Or, do I have to save the image in the app in order to use it again later?
It would be great if there was a simple way to do this, as there is with a video where you just store the NSUrl for the particular video, and then call MPMoviePlayerController to do everything for you.
Any help would be much appreciated!
It turns out that it is actually not that hard to do this. In the UIImagePickerDelegate method:
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info;
the NSDictionary "info" actually contains the url to the image or the movie which is stored on the Camera Roll. You need only check:
if([[info valueForKey:UIImagePickerControllerMediaType] isEqualToString:(NSString *)kUTTypeMovie]){ // If the user took a video,
movieURL = [[info valueForKey:UIImagePickerControllerMediaURL] retain];// Get the URL of where the movie is stored.
UISaveVideoAtPathToSavedPhotosAlbum([movieURL path], nil, nil, nil); // Save the movie to the photo album.
}
and this will save the movie to the Camera Roll, as well as record the url. Doing it for a photo is analogous, just replace the "kUTTypeMovie" with "kUTTypeImage", and replace
movieURL = [[info valueForKey:UIImagePickerControllerMediaURL] retain];// Get the URL of where the movie is stored.
UISaveVideoAtPathToSavedPhotosAlbum([movieURL path], nil, nil, nil); // Save the movie to the photo album.
with
UIImage * image = [info valueForKey:UIImagePickerControllerOriginalImage];
UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil);
If you need to store the UIImage not on the Camera Roll, there is a great post on stackoverflow Saving UIImage with NSCoding that you can use to store the image in your app. Hope that helps someone!
