我想做的是什么？有一个MainViewController其中有两个 UIViews 一个加载UITableViewController和另一个UIPageViewController。在TableViewController中，有 pdf 的名称列表。但是当我点击pdf列表时，它不会PageViewController在上下文中加载新的pdf。
Pdf 文件名存储在 .plist 文件中，Pdfs 从 NSBundle 或 NSDocumentDirectory 中获取
在 TableViewController 中
-(void)tableView:(UITableView*)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
Play *play = (Play *)[[self.sectionInfoArray objectAtIndex:indexPath.section] play];
Quotation *qute = [play.Details objectAtIndex:indexPath.row];
if ([qute.Key isEqualToString:@"ABC"])
{
AppDelegate *app = [[UIApplication sharedApplication]delegate];
app.strpdfname = qute.Value;
MiddleViewController *mid = [[MiddleViewController alloc] initWithNibName:@"MiddleViewController" bundle:nil];
ContentViewController *cvc = [[ContentViewController alloc] initWithNibName:@"ContentViewController" bundle:nil];
[mid viewDidLoad];
[cvc viewDidLoad];
}
else
{
MainViewController *vc = [[MainViewController alloc] initWithNibName:@"MainViewController" bundle:nil];
[vc viewDidLoad];
}
}
In PageViewController
- (void)viewDidLoad
{
[super viewDidLoad];
self.modelArray = [[NSMutableArray alloc] init];
AppDelegate *app = [[UIApplication sharedApplication] delegate];
self.pdfName = app.strpdfname;
NSString *path = [[NSBundle mainBundle] pathForResource:pdfName ofType:nil];
NSURL *targetURL = [NSURL fileURLWithPath:path];
originalPDF = CGPDFDocumentCreateWithURL((__bridge CFURLRef)targetURL);
numberOfPages = CGPDFDocumentGetNumberOfPages(originalPDF);
for (int index = 0; index < numberOfPages ; index++)
{
[self.modelArray addObject:[NSString stringWithFormat:@"%d",index]];
}
self.pageViewController = [[UIPageViewController alloc] initWithTransitionStyle:UIPageViewControllerTransitionStylePageCurl navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal options:nil];
self.pageViewController.delegate = self;
self.pageViewController.dataSource = self;
contentViewController = [[ContentViewController alloc] initWithNibName:@"ContentViewController" bundle:nil];
contentViewController.labelContents = [self.modelArray objectAtIndex:0];
NSArray *viewControllers = [NSArray arrayWithObject:contentViewController];
[self.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward
animated:NO
completion:nil];
[self addChildViewController:self.pageViewController];
[self.view addSubview:self.pageViewController.view];
[self.pageViewController didMoveToParentViewController:self];
CGRect pageViewRect = self.view.frame;
pageViewRect = CGRectInset(pageViewRect, 0.0, 0.0);
self.pageViewController.view.frame = pageViewRect;
self.view.gestureRecognizers = self.pageViewController.gestureRecognizers;
}
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController
viewControllerBeforeViewController:(UIViewController *)viewController
{
NSUInteger currentIndex = [self.modelArray indexOfObject:[(ContentViewController *)viewController labelContents]];
if(currentIndex == 0)
{
return nil;
}
contentViewController = [[ContentViewController alloc] init];
contentViewController.labelContents = [self.modelArray objectAtIndex:currentIndex - 1];
return contentViewController;
}
- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController
viewControllerAfterViewController:(UIViewController *)viewController
{
NSUInteger currentIndex = [self.modelArray indexOfObject:[(ContentViewController *)viewController labelContents]];
if(currentIndex == self.modelArray.count-1)
{
return nil;
}
contentViewController = [[ContentViewController alloc] init];
contentViewController.labelContents = [self.modelArray objectAtIndex:currentIndex + 1];
return contentViewController;
}
- (UIPageViewControllerSpineLocation)pageViewController:(UIPageViewController *)pageViewController
spineLocationForInterfaceOrientation:(UIInterfaceOrientation)orientation
{
UIViewController *currentViewController = [self.pageViewController.viewControllers objectAtIndex:0];
NSArray *viewControllers = [NSArray arrayWithObject:currentViewController];
[self.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:NULL];
self.pageViewController.doubleSided = NO;
return UIPageViewControllerSpineLocationMin;
}
In ContentViewController of PageViewController
-(UIImage*) imageFromPDF:(CGPDFDocumentRef)pdf withPageNumber:(NSUInteger)pageNumber withScale:(CGFloat)scale
{
CGPDFPageRef pdfPage = CGPDFDocumentGetPage(pdf,pageNumber);
CGRect tmpRect = CGPDFPageGetBoxRect(pdfPage,kCGPDFMediaBox);
CGRect rect = CGRectMake(tmpRect.origin.x,tmpRect.origin.y,tmpRect.size.width*scale,tmpRect.size.height*scale);
UIGraphicsBeginImageContext(rect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextTranslateCTM(context,-50,rect.size.height-30);
CGContextScaleCTM(context,scale,-scale);
CGContextDrawPDFPage(context,pdfPage);
UIImage* pdfImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return pdfImage;
}
- (void)viewDidLoad
{
[super viewDidLoad];
AppDelegate *app = [[UIApplication sharedApplication] delegate];
self.pdfName = app.strpdfname;
i = [labelContents intValue];
NSString *path = [[NSBundle mainBundle] pathForResource:pdfName ofType:nil];
if (i!=0)
{
CGPDFDocumentRef pdf = CGPDFDocumentCreateWithURL((__bridge CFURLRef)[NSURL fileURLWithPath:path]);
UIImage *img = [[UIImage alloc] init];
img = [self imageFromPDF:pdf withPageNumber:i withScale:1];
UIImageView *imgview1 = [[UIImageView alloc] initWithImage:img];
[self.view addSubview:imgview1];
}
else
{
UIImage *imgmain = [UIImage imageNamed:@"Diary4.png"];
UIImageView *imgvmain = [[UIImageView alloc] initWithImage:imgmain];
imgvmain.frame = CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y,580,self.view.frame.size.height);
[self.view addSubview:imgvmain];
}
}
在 MainViewController
-(void)viewDidload
{
leftView = [[UIView alloc] initWithFrame:CGRectMake(5,25, 200,715)];
leftView.backgroundColor = [UIColor clearColor];
tvc = [[TableViewController alloc] initWithStyle:UITableViewStylePlain];
tvc.plays = self.plays;
tvc.view.frame = leftView.frame;
leftView.clipsToBounds = YES;
[leftView addSubview:tvc.view];
[self.view addSubview:leftView];
middleView = [[UIView alloc] initWithFrame:CGRectMake(107, 30, 575, 670)];
mvc = [[MiddleViewController alloc] initWithNibName:@"MiddleViewController" bundle:nil];
[mvc.view setFrame:middleView.frame];
[middleView addSubview:mvc.view];
[self.view addSubview:middleView];
}