从导入到Storyboard项目的xib项目加载ViewController代码。

Question

I have been experimenting with some code in a sample project that uses xibs. In that project the below method takes a photo that was picked via UIImagePickerController and displays another VC modally initializing its scrollview with the image.

This works fine in the xib project but now that im integrating it into a storyboard project this section throws an exception:

SSPhotoCropperViewController *photoCropper =
        [[SSPhotoCropperViewController alloc] initWithPhoto:nonRawImage
                                                   delegate:self
                                                     uiMode:SSPCUIModePresentedAsModalViewController
                                            showsInfoButton:YES]; 

The error is:

'Could not load NIB in bundle: 'NSBundle </var/mobile/Applications/24FB2532-BB1D-4573-8551-386FAA154022/BubbleBoss.app> (loaded)' with name 'SSPhotoCropperViewController''

Which seems to be saying that its looking for the xib file that isnt there. I have created a mimicked storyboard version of the xib and hooked up all my actions and outlets the same.

How do I display a storyboard VC in the below method, set the scrollview photo to nonRawImage, pass it the min and max zoom as is done below?

Problem Method:

-(void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    NSString *mediaType = info[UIImagePickerControllerMediaType];

    [self dismissViewControllerAnimated:NO completion:nil];

    if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {
        UIImage *image = info[UIImagePickerControllerOriginalImage];

        UIImage *nonRawImage=[self scaleAndRotateImage:image];

        SSPhotoCropperViewController *photoCropper =
        [[SSPhotoCropperViewController alloc] initWithPhoto:nonRawImage
                                                   delegate:self
                                                     uiMode:SSPCUIModePresentedAsModalViewController
                                            showsInfoButton:YES];
        [photoCropper setMinZoomScale:0.25f];
        [photoCropper setMaxZoomScale:3.00f];
        UINavigationController *nc = [[UINavigationController alloc] initWithRootViewController:photoCropper];
        [self presentViewController:nc animated:YES completion:nil];



        //  photoPreviewImageView.image = image;
        if (_newMedia)
            UIImageWriteToSavedPhotosAlbum(image,
                                           self,
                                           @selector(image:finishedSavingWithError:contextInfo:),
                                           nil);
    }
    else if ([mediaType isEqualToString:(NSString *)kUTTypeMovie])
    {
        // Code here to support video if enabled
    }
}

Code from SSPhotoCropperViewController.m

- (id) initWithPhoto:(UIImage *)aPhoto
            delegate:(id<SSPhotoCropperDelegate>)aDelegate
{
    return [self initWithPhoto:aPhoto
                      delegate:aDelegate
                        uiMode:SSPCUIModePresentedAsModalViewController
               showsInfoButton:YES];
}

- (id) initWithPhoto:(UIImage *)aPhoto
            delegate:(id<SSPhotoCropperDelegate>)aDelegate
              uiMode:(SSPhotoCropperUIMode)uiMode
     showsInfoButton:(BOOL)showsInfoButton
{
    if (!(self = [super initWithNibName:@"SSPhotoCropperViewController" bundle:nil])) {
        return self;
    }

    self.photo = aPhoto;
    self.delegate = aDelegate;
    _uiMode = uiMode;
    _showsInfoButton = showsInfoButton;

    self.minZoomScale = 0.5f;
    self.maxZoomScale = 3.0f;

    self.infoMessageTitle = @"In order to crop the photo";
    self.infoMessageBody = @"Use two of your fingers to zoom in and out the photo and drag the"
                           @" green window to crop any part of the photo you would like to use.";
    self.photoCropperTitle = @"Crop Photo";

    return self;
}

- (id) initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        self.photo = nil;
        self.delegate = nil;
    }
    return self;
}


- (void) didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
}

- (IBAction) infoButtonTapped:(id)sender
{
    UIAlertView *av = [[UIAlertView alloc] initWithTitle:self.infoMessageTitle
                                                 message:self.infoMessageBody
                                                delegate:nil
                                       cancelButtonTitle:@"OK"
                                       otherButtonTitles:nil];
    [av show];

}


#pragma -
#pragma mark - View lifecycle

- (void) viewDidLoad
{
    [super viewDidLoad];

    //
    // setup view ui
    //
    UIBarButtonItem *bi = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone
                                                                        target:self
                                                                        action:@selector(saveAndClose:)];
    self.navigationItem.rightBarButtonItem = bi;


    if (_uiMode == SSPCUIModePresentedAsModalViewController) {
        bi = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemCancel
                                                           target:self
                                                           action:@selector(cancelAndClose:)];
        self.navigationItem.leftBarButtonItem = bi;

    }

    if (!_showsInfoButton) {
        [self.infoButton setHidden:YES];
    }

    self.title = self.photoCropperTitle;

    //
    // photo cropper ui stuff
    //
    [self setScrollViewBackground];
    [self.scrollView setMinimumZoomScale:self.minZoomScale];
    [self.scrollView setMaximumZoomScale:self.maxZoomScale];

    [self.cropRectangleButton addTarget:self
                                 action:@selector(imageTouch:withEvent:)
                       forControlEvents:UIControlEventTouchDown];
    [self.cropRectangleButton addTarget:self
                                 action:@selector(imageMoved:withEvent:)
                       forControlEvents:UIControlEventTouchDragInside];

    if (self.photo != nil) {
        [self loadPhoto];
    }
}

- (void) viewDidUnload
{
    [super viewDidUnload];
}

- (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return UIInterfaceOrientationIsPortrait(interfaceOrientation);
}


#pragma -
#pragma UIScrollViewDelegate Methods

- (UIView *) viewForZoomingInScrollView:(UIScrollView *)scrollView
{
    return self.imageView;
}


#pragma -
#pragma Private Methods

- (void) loadPhoto
{
    if (self.photo == nil) {
        return;
    }

    CGFloat w = self.photo.size.width;
    CGFloat h = self.photo.size.height;
    CGRect imageViewFrame = CGRectMake(0.0f, 0.0f, roundf(w / 2.0f), roundf(h / 2.0f));
    self.scrollView.contentSize = imageViewFrame.size;

    UIImageView *iv = [[UIImageView alloc] initWithFrame:imageViewFrame];
    iv.image = self.photo;
    [self.scrollView addSubview:iv];
    self.imageView = iv;

}

---

Ok ive got the method call changed to

SSPhotoCropperViewController *photoCropper =
    [[SSPhotoCropperViewController alloc] initWithPhoto:photo
                                               delegate:self
                                                 uiMode:SSPCUIModePresentedAsModalViewController
                                        showsInfoButton:YES];
    [photoCropper setMinZoomScale:0.25f];
    [photoCropper setMaxZoomScale:3.00f];
    UINavigationController *nc = [[UINavigationController alloc] initWithRootViewController:photoCropper];

But Im not sure what to do with the below:

- (id) initWithPhoto:(UIImage *)aPhoto
            delegate:(id<SSPhotoCropperDelegate>)aDelegate
              uiMode:(SSPhotoCropperUIMode)uiMode
     showsInfoButton:(BOOL)showsInfoButton
{
   if (!(self = [super initWithNibName:@"SSPhotoCropperViewController" bundle:nil])) {
       return self;
    }

    self.photo = aPhoto;
    self.delegate = aDelegate;
    _uiMode = uiMode;
    _showsInfoButton = showsInfoButton;

    self.minZoomScale = 0.5f;
    self.maxZoomScale = 3.0f;

    self.infoMessageTitle = @"In order to crop the photo";
    self.infoMessageBody = @"Use two of your fingers to zoom in and out the photo and drag the"
                           @" green window to crop any part of the photo you would like to use.";
    self.photoCropperTitle = @"Crop Photo";

    return self;
}

- (id) initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        self.photo = nil;
        self.delegate = nil;
    }
    return self;
}

Answer 1

You should give your view controller an identifier within the storyboard, then instantiate it as follows:

YourViewControllerClass *viewController =
             [[UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil]   
                       instantiateViewControllerWithIdentifier:@"ViewController"];

The identifier can be set using Storyboard ID from within the Identity Inspector.

Answer 2

Make sure you set the SSPhotoCropperViewController's Identifier in the storyboard to SSPhotoCropperViewController.

Change your method:

- (id) initWithPhoto:(UIImage *)aPhoto
            delegate:(id<SSPhotoCropperDelegate>)aDelegate
              uiMode:(SSPhotoCropperUIMode)uiMode
     showsInfoButton:(BOOL)showsInfoButton
{
    //if (!(self = [super initWithNibName:@"SSPhotoCropperViewController" bundle:nil])) {
    if (!(self = [[UIStoryboard storyboardWithName:@"YourStoryBoardName" bundle:nil]   
                   instantiateViewControllerWithIdentifier:@"SSPhotoCropperViewController"])) {
        return self;
    }

    self.photo = aPhoto;
    self.delegate = aDelegate;
    _uiMode = uiMode;
    _showsInfoButton = showsInfoButton;

    self.minZoomScale = 0.5f;
    self.maxZoomScale = 3.0f;

    self.infoMessageTitle = @"In order to crop the photo";
    self.infoMessageBody = @"Use two of your fingers to zoom in and out the photo and drag the"
                           @" green window to crop any part of the photo you would like to use.";
    self.photoCropperTitle = @"Crop Photo";

    return self;
}