Take photo with iPhone and then use it!

I have an app that takes a photo and puts it in an image view. Simple. Code looks like this:

- (void)takePhoto:(id)sender
{
    // Lazily allocate image picker controller
    if (!imagePickerController) {
        imagePickerController = [[UIImagePic开发者_如何学GokerController alloc] init];

        // If our device has a camera, we want to take a picture, otherwise, we just pick from
        // photo library
        if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
        {
            [imagePickerController setSourceType:UIImagePickerControllerSourceTypeCamera];
        }else
        {
            [imagePickerController setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
        }

        // image picker needs a delegate so we can respond to its messages
        [imagePickerController setDelegate:self];
    }
    // Place image picker on the screen
    [self presentModalViewController:imagePickerController animated:YES];
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];

    image = [ImageHelpers imageWithImage:image scaledToSize:CGSizeMake(480, 640)];

    [imageView setImage:image];

    [self dismissModalViewControllerAnimated:YES];
}

When I use the Camera Roll everything works great, but if I use the actual Camera the image view is just black. Why is that?

Do I need to save it to the camera roll before I use it in the image view?

Ok. Found the solution myself.

I had to dismiss the modal view first...

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{

    [self dismissModalViewControllerAnimated:YES]; //Do this first!!
    UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];

    image = [ImageHelpers imageWithImage:image scaledToSize:CGSizeMake(480, 640)];

    [imageView setImage:image];  
}

Why you can't just use that code?

- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)image editingInfo:(NSDictionary *)editingInfo
{
    [imageView setImage:image];
    [picker dismissModalViewControllerAnimated:YES];
    [picker release];
}