A C# implementation of the Client library for the Google Play APK Expansion files and Google Play Licensing
C#
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ExpansionDownloader.Sample.Honeycomb
ExpansionDownloader.Sample
ExpansionDownloader
LicenseVerificationLibrary.Sample
LicenseVerificationLibrary.Tests
LicenseVerificationLibrary
SuperSimpleSpansions
System.IO.Compression.Zip
.gitattributes
.gitignore
AndroidPlayExpansionLibrary.sln
AndroidPlayExpansionLibrary.sln.DotSettings
AssemblyInfo.Common.cs
ResharperCodeStyle.xml
ResharperSettings.DotSettings
readme.mdown

readme.mdown

About this project

This is the C# implementation of Google's License Verification Library and the Android Play Expansion Library

They both compile and run correctly. I have not tested on a 4.0+ device yet, but there were no problems on the Android 2.x and 3.x devices.

The downloader currently, correctly, notices that it is on mobile data and asks the user to make a decision on to wait for wifi or use mobile.

For your app

There are no dependencies other than the included projects. There should be two:

  • the LicenseVerificationLibrary (which requires nothing)
  • the ExpansionDownloader (which requires the LVL).

No jars and no resources are needed.

What you do need to add is the required permissions. Either in the manifest:

<uses-permission android:name="com.android.vending.CHECK_LICENSE">

or as an assembly attribute:

[assembly: UsesPermission("com.android.vending.CHECK_LICENSE")]

You can even use the LVL without the Downloader for pure licensing purposes. The other projects are either:

  • Samples (to test using one of my accounts on Play, which you can change)
  • Tests (Unit Tests?).

For you

Currently due to Mono for Android's limitation on including resource files with class libraries, so I have embedded the stings temporarily. I am also using a temporary static class CustomNotificationFactory to hold some app classes that are used insidethe library. I will move this out soon.

This is most of the work done and it just needs cleaning and refactoring. I also then want to make it friendlier towards .NET developers and using the C#/.NET types instead of the Java types.

I suppose the most important thing to note is that this is an almost direct translation of the Java code. This is not really bad, but some things could have been done better/differently in C#. eg: The IPCs could be better implemented, but I haven't gotten around to that yet.

Your contributions

The ToDo list is sort of the open issues part on GitHub. Please feel free to add any new issues as new things come up. Or any suggestions for improvements.

License

This code is released under the Apache 2.0 License. http://www.apache.org/licenses/LICENSE-2.0.html