C# pdf generation and loading on iOS help

Hello,

I was trying to figure out how to generate and display a pdf in a Unity app.
I would like the app, and pdf to be available for iOS, Android and web app.
Following this tutorial I was able to generate a pdf file and store in the app main folder within the simulator.

http://www.devindia.biz/unity-pdf-generation-with-sharppdf-plugin/

Unfortunately when I try to open the pdf inside the app using

Code (CSharp):

1.     Application.OpenURL("FILE://" + path);

It did not work.

Then I was able to partially solve the problem:

I was able to generate the .pdf file in Unity Editor and in Standalone application on OSX. I realized I had trouble on storing/loading files in Unity.

Code (CSharp):

1.    // this is working on Editor. Application.dataPath are reached by the application and files are stored in Assets/StreamingAssets folder under project in Editor  
2.  
3.           #if UNITY_EDITOR || UNITY_EDITOR_64
4.             myDoc.createPDF(Application.dataPath + "/StreamingAssets/" + attacName);
5.  
6.          
7.             myTable = null;
8.  
9.             #endif
10.  
11.     // This is working on Mac standalone application. The file is correctly saved under Application.app/Contents folder
12.  
13.       #if UNITY_STANDALONE
14.          
15.         myDoc.createPDF(Application.dataPath + "/" + attacName);
16.         myTable = null;
17.             #endif

The code to retrieve and open the file:

Code (CSharp):

1.     public void openPdf() {
2.         string path;
3.  
4.             // tested working on mac
5.  
6.             #if UNITY_EDITOR || UNITY_EDITOR_64
7.  
8.          
9.             path = "file:" +Application.dataPath + "/StreamingAssets/" + attacName;
10.  
11.  
12.             #endif
13.  
14.             #if UNITY_STANDALONE
15.          
16.             path = "file:" +Application.dataPath + "/" + attacName;
17.          
18.             #endif
19.  
20.             Application.OpenURL(path);
21.             Debug.Log ("Button Clicked");
22.  
23.         }

So far everything works perfectly.

The pain comes with ios.

I was able to generate a pdf file with the above code in Application.persistentDataPath and getting it back from iTunes (to verify it was created) enabling UIFileSharingEnabled under info.plist. Here's the code:

Code (CSharp):

1.     #if UNITY_IOS
2.           myDoc.createPDF(Application.persistentDataPath + "/" + attacName);
3.          myTable = null;
4.         #endif

The trouble is when I try to Application.OpenUrl(path). It seems that c# code is blind to Application.persistentDataPath. Which by the way is /var/mobile/Containers/Data/Application/"ApplicationName"/Documents/"pdfName".pdf using

Code (CSharp):

1.     path = "file://" + Application.persistentDataPath + "/" + attacName;
2.         Application.OpenURL(path);

I tried also to save the file in StreamingAssets folder but Xcode didn't like it:

UnauthorizedAccessException: Access to the path "/private/var/mobile/Containers/Bundle/Application/F105683E-B2EA-4B0C-81B7-61302C58D56C/PdfReader.app/Data/newPDF.pdf" is denied.
at Mono.Security.Cryptography.RSAManaged.GenerateKeyPair () [0x00000] in <filename unknown>:0
at System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean anonymous, FileOptions options) [0x00000] in <filename unknown>:0
at System.IO.FileStream..ctor (System.String path, FileMode mode) [0x00000] in <filename unknown>:0
at sharpPDF.pdfDocument.createPDF (System.String outputFile) [0x00000] in <filename unknown>:0
at simplepdf+<CreatePDF>c__Iterator1.MoveNext () [0x00000] in <filename unknown>:0

(Filename: currently not available on il2cpp Line: -1)


I then decided to get this wrapper

https://www.assetstore.unity3d.com/en/#!/content/17591

but it can only copy already formatted pdf file from StreamingAssets folder to /Raw folder on iOS device.

I am thinking I have to write my own wrapper to load data from Application.persistentDataPath on iOS, have you got any suggestion to start with?

Thank you again.

 

there are some cool tools in the forum editor. If you would use them your post would be much more readable.


please edit your post... I will not read it like this.

 

Sorry about that. I've edited the post, check it out.

 

Hi,
I'm struggling with the same issue on IOS. Did you find a soluton?