how load a pdf into iphone and my pdf is of 200 pages then it should allow to turn the pages as we do with while reading book manually means use animation to turn a page one by one ..
Thanking you ..
Loading a large PDF and having page flipping animation isn't very simple. You can use a UIWebView like #Jim says to load the entire thing by just pointing the UIWebView's URL to the PDF but you won't get page animation. However to get full control requires that you render the PDF page by page manually to a view, and create the view's turning animation your self. Its nontrivial, and given your question you don't sound like you know enough to realistically achieve this right off.
Use UIWebView Control to load pdf files.
Related
I am wondering if anyone can offer any advice towards solving this problem.
I am building an app that uses a UIScrollView with paging enabled, with each page corresponding to downloaded and parsed XML data. Part of that XML data is a URL to an image.
Now, it would take forever to load an app that downloads the image for every XML entry and then push it to the respective UIScrollView page created on runtime with the rest of the XML data.
Is there a way to be able to detect which UIScrollView page you are on and then download the image as needed and still allow the rest of the data to download at runtime?
Try to read SDWebImage or Apple's LazyTableImages
Just as referenece, I solved it by adding all of the image views into an NSArray. Using the scroll view delegate, I was able to determine which page number I was on, and translated that page number to an integer that I used to access the appropriate uiimage view located within the array.
It seems to work great!
Might you offer a better solution?
I am currently using QLPreviewController to view PDFs (250MB+) However it cannot deal with real large files. Either I get the info that not the whole file has been loaded or the whole app just dies.
I also need to customize the view which is nit possible using QLPreviewController.
What should I do? Use UIWebView instead? Or will I have to use CGContextDrawPDFPage?
Using the latter, how will I get zooming implemented?
I would go with your suggestion of using a UIWebView. Doing so will automatically give you zoom support and the UIWebView should handle loading extremely large PDF's.
If you have decided to go with Quartz, this link looks very promising for zoom support.
in my iPhone application i am loading a pdf file on UIWebview. I PDF URL is called from the webserver. My problem is that it is taking a lot of time to display the PDF File. Can any one please suggest me how can i make it bit fast.
Thanks!
Most likely, you cannot eliminate the latency in:
downloading your pdf from the web
displaying the pdf in the UIWebView
but you may be able to hide the latency by preparing the data before you need to display it in a background operation. The NSOperationQueue and NSOperation class make doing this relatively straightforward. Load the data in an NSOperation, save it to a temporary file, assign it to display in a "offscreen" UIWebView (one whose frame makes it not display on the screen), and when you finally need to display the pdf, just place the UIWebView into your current view or move it onscreen by changing its frame.
If you have control over the pdf itself, you can use Acrobat to optimize it for downloading and electronic viewing.
In Acrobat 10, use either the PDF Optimizer command, or the Preflight tool (select Online Publishing 'optimize for size')
Webview is very slow in rendering the PDF. Using native CGPDFDocument API will be fast, but you need to handle the complex loading and rendering process.
I want to create a page by page PDF reader.
I know how UIWebView can be used to show the PDF but It will load the entire PDF and want to show one page at a time.
The PDF is stored locally.
Next and previous PDF Pages should be loaded depending on the horizontal swipe.
How to show a single page along with horizontal Swipe and Zooming functionalities ?
What is the best approach for such problem?
Is there any tutorial for this?
EDIT :
I have used CGPDF APIs to show the PDF page by page.
I am using the PDF page as image.
But zooming is not working properly as UIPageControl is also used.
How to zoom these images along with page control ?
You can use Leaves View, you can find tutorial from
https://github.com/brow/leaves
second option is FastPDFKit, you can get it from
http://mobfarm.eu/
According to me leaves is more preferable because memory management is good and it is more user friendly.
EDIT:
You can consider two more options which provide some good features for PDF.
Reader on Github
PSPDFKit
Note: PSPDFKit is not free.
EDIT:
Since iOS 5, you can add an effect of swiping the page like iBooks. To do it that way you can use UIPageViewController. To get some basic idea, just create an app with page-based application from your Xcode template or you can refer to this link.
you add as a subLayer the tiledLayer that draws the PDF page (CGContextDrawPDFPage) to a UIView and then you add that as a subview to a UIScrolView. That way you have a PDF page that you can zoom by pinching it and you can scroll.
Lets say you create a class PDFViewController:
[myContentView.layer addSublayer:tiledLayer];
...
[scrollView addSubview:myContentView];
...
[self.view addSubview:scrollView];
and then you should create MagazineViewController class where you have a large horizontal UIScrollView where you create the views from the PDFViewController that contain the pages, That way you have a view that you can swipe horizontally and see the pages of a magazine or a book.
I am developing an app where I need to show PDF documents. After many hours of googling I was able to build up a view to show the PDF document fetched from a URL.
I know only to display a single page. using CGPDFDocumentGetPage(ref, pageNumber).
What I would like to have.
Pagination function.
Zoom
Scrolling
Why not using the UIWebView instead of reinventing the wheel?