将UIImage保存到照片库而不是相机胶卷

- (void)saveToCameraRoll:(UIImage *)image withCompletion:(void (^)(BOOL success))completion {
    // Save the image to a new temporary object
    NSManagedObject *newObject = [NSEntityDescription insertNewObjectForEntityForName:@"MyEntity" inManagedObjectContext:self.managedObjectContext];
    [newObject setValue:image forKey:@"image"];

    // Save the object to the database
    NSError *error = nil;
    [self.managedObjectContext save:&error];

    // Handle the error
    if (error) {
        NSLog(@"Error saving object: %@", error.localizedDescription);
    }

    // Call the completion block
    if (completion) {
        completion(YES);
    }
}