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rdvojmoc / DinkToPdf

C# .NET Core wrapper for wkhtmltopdf library that uses Webkit engine to convert HTML pages to PDF.
MIT License
1.09k stars 416 forks source link

Support Xamarin.Android #94

Open fedemkr opened 5 years ago

fedemkr commented 5 years ago

I'm trying to use this library on Xamarin.Android but I think that the libwkhtmltox.so might not be supported for the different ABIs of Android.

At least, I've tried with x86 (given that I'm trying on an emulator) and I can't get this to work.

I've added the android native reference to the library but it keeps throwing DLLNotFoundException pointing out to libwkhtmltox.

This is how my Android *.csproj android native library looks like:

<AndroidNativeLibrary Include="lib\x86\libwkhtmltox.so" />

Also tried to set the file as "Copy Always", but it didn't work.

Something that I think is worth noticing is that the application output shows:

[Mono] DllImport attempting to load: 'libwkhtmltox'.
[Mono] DllImport error loading library '/storage/emulated/0/Android/data/com.whatever.app/files/.__override__/libwkhtmltox': '(null)'.
[Mono] DllImport error loading library '/storage/emulated/0/Android/data/com.whatever.app/files/.__override__/libwkhtmltox.so': '(null)'.
[Mono] DllImport error loading library '/storage/emulated/0/Android/data/com.whatever.app/files/.__override__/libwkhtmltox.so': '(null)'.
[Mono] DllImport error loading library '/system/lib/libwkhtmltox': '(null)'.
[Mono] DllImport error loading library '/system/lib/libwkhtmltox.so': '(null)'.
[Mono] DllImport error loading library '/system/lib/libwkhtmltox.so': '(null)'.
[Mono] DllImport error loading library 'libwkhtmltox': '(null)'.
[Mono] DllImport error loading library 'libwkhtmltox.so': 'dlopen failed: library "libXrender.so.1" not found'.
[Mono] DllImport error loading library 'libwkhtmltox.so': 'dlopen failed: library "libXrender.so.1" not found'.
[Mono] DllImport error loading library 'libwkhtmltox': '(null)'.
[Mono] DllImport unable to load library '(null)'.

So maybe the libXrender needs to be also referenced in order to load the libwkhtmltox.sofile.

Am I missing something or is the *.so file not prepared to work with the different ABIs of Android?

fashrista commented 5 years ago

@fedemkr Have you found a way to use this lib on android? I have a Unity/Android app and would wery much like to make this work to avoid using a cloud web api just to convert html to A4 pdf-s. As I see it the problem is the native libwkhtmltox.dll that is built for windows platforms. But maybe if we tryed something built for linux ??

fedemkr commented 5 years ago

I've tried with the version for linux and I couldn't make it work. I think it's necessary to build the libwkhtmltox for the different ABIs of Android using CMAKE. Particularly, in my project is no longer needed and now I don't have enough spare time to make it work. But in the future if it's still needed and I have the time, I'll come back to see if I can get it done.