我一直在使用xibs的示例项目中试验一些代码。在该项目中，下面的方法拍摄了通过UIImagePickerController选取的照片，并显示另一个VC模态初始化其滚动视图和图像。
这在xib项目中工作正常，但现在我将它集成到一个storyboard项目中，这部分引发了一个异常：
SSPhotoCropperViewController *photoCropper =
[[SSPhotoCropperViewController alloc] initWithPhoto:nonRawImage
delegate:self
uiMode:SSPCUIModePresentedAsModalViewController
showsInfoButton:YES];
错误是：
'Could not load NIB in bundle: 'NSBundle </var/mobile/Applications/24FB2532-BB1D-4573-8551-386FAA154022/BubbleBoss.app> (loaded)' with name 'SSPhotoCropperViewController''
这似乎在说它寻找不存在的xib文件。我创建了一个模仿的xib故事板版本，并将我的所有动作和插座连接起来。
如何在下面的方法中显示故事板VC，将scrollview照片设置为nonRawImage，如下所示将最小和最大缩放传递给它？
问题方法：
-(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
}
}
来自SSPhotoCropperViewController.m的代码
- (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;
}
我已将方法调用更改为
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];
但我不知道如何处理以下内容：
- (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;
}
答案 0 :(得分：1)
您应该在故事板中为视图控制器提供一个标识符，然后按如下方式对其进行实例化：
YourViewControllerClass *viewController =
[[UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil]
instantiateViewControllerWithIdentifier:@"ViewController"];
可以使用Identity Inspector中的Storyboard ID设置标识符。
答案 1 :(得分：1)
确保将故事板中的SSPhotoCropperViewController标识符设置为SSPhotoCropperViewController。
更改方法：
- (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;
}