mattleibow/android.play.expansionlibrary

MOVED to xamarin/XamarinComponents

Deprecation

This library is deprecated moving forward. New packages have been uploaded that are no longer a C# port of the library, but a direct binding of the Java code:

• https://www.nuget.org/packages/Xamarin.Google.Android.Vending.Licensing
• https://www.nuget.org/packages/Xamarin.Google.Android.Vending.Expansion.Downloader
• https://www.nuget.org/packages/Xamarin.Google.Android.Vending.Expansion.ZipFile

There are several breaking changes, although the API is fairly similar - mostly namespace/type changes. All the changes are documented here, along with their replacements:

https://github.com/xamarin/XamarinComponents/blob/master/Android/GoogleAndroidVending/docs/API-Changes.md

More detailed docs can be found here:

https://github.com/xamarin/XamarinComponents/tree/master/Android/GoogleAndroidVending/docs

The new library is located here:

https://github.com/xamarin/XamarinComponents/tree/master/Android/GoogleAndroidVending

---

About this project

This is the C# implementation of Google's License Verification Library (r2) and the Android Play Expansion Library (r3)

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

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

android.play.expansionlibrary's Issues

Put UI text into a resources file

XAPK Validation faild error

Hello,
I am getting this error after downloading obb file from google play it displaying 99% of downloading then after throwing an error.

Notification not clearing on exit?

As far as I can see this handles the notifications for you, downloading, paused etc. When exiting the application (fully closing it) the download notification stops but does not clear and is unclearable by the user. So you can end up with a load of them if you repeat.

Is this something I should be handling? As I cannot seem to find how to clear the notification.

Use another database format

The download database files are updated using the System.Xml libraries. The database file is tiny and the extra overhead of the System.Xml,dll is huge for such a small part.

• 3 ints for MetadataTable
• 11/12 strings/longs/ints for the download info (currently only 2 records)

Consider using Preferences or even plain text/serialization

MillisPerMinute

Ahh:

-        public static readonly long MillisPerMinute = TimeSpan.FromMinutes(1).Milliseconds;
+        public static readonly long MillisPerMinute = (long)TimeSpan.FromMinutes(1).TotalMilliseconds;

About Image in Expansion Folder

Question: Is the Pref File correct?

private const string PrefsFile = "com.android.vending.licensing.ServerManagedPolicy";

Is what you have... am I supposed to update this?

Sevice DownloadService has leaked ServiceConnection

Remove this exception:

06-26 10:44:09.730 E/ActivityThread(29293): Service crosspuppy.PuppyDownloaderService has leaked ServiceConnection licenseverificationlibrary.LicenseChecker@4080b978 that was originally bound here
06-26 10:44:09.730 E/ActivityThread(29293): android.app.ServiceConnectionLeaked: Service crosspuppy.PuppyDownloaderService has leaked ServiceConnection licenseverificationlibrary.LicenseChecker@4080b978 that was originally bound here
06-26 10:44:09.730 E/ActivityThread(29293):     at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:923)
06-26 10:44:09.730 E/ActivityThread(29293):     at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:818)
06-26 10:44:09.730 E/ActivityThread(29293):     at android.app.ContextImpl.bindService(ContextImpl.java:1077)
06-26 10:44:09.730 E/ActivityThread(29293):     at android.content.ContextWrapper.bindService(ContextWrapper.java:370)
06-26 10:44:09.730 E/ActivityThread(29293):     at expansiondownloader.service.DownloaderService_LvlRunnable.n_run(Native Method)
06-26 10:44:09.730 E/ActivityThread(29293):     at expansiondownloader.service.DownloaderService_LvlRunnable.run(DownloaderService_LvlRunnable.java:36)
06-26 10:44:09.730 E/ActivityThread(29293):     at android.os.Handler.handleCallback(Handler.java:587)
06-26 10:44:09.730 E/ActivityThread(29293):     at android.os.Handler.dispatchMessage(Handler.java:92)
06-26 10:44:09.730 E/ActivityThread(29293):     at android.os.Looper.loop(Looper.java:132)
06-26 10:44:09.730 E/ActivityThread(29293):     at android.app.ActivityThread.main(ActivityThread.java:4025)
06-26 10:44:09.730 E/ActivityThread(29293):     at java.lang.reflect.Method.invokeNative(Native Method)
06-26 10:44:09.730 E/ActivityThread(29293):     at java.lang.reflect.Method.invoke(Method.java:491)
06-26 10:44:09.730 E/ActivityThread(29293):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
06-26 10:44:09.730 E/ActivityThread(29293):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
06-26 10:44:09.730 E/ActivityThread(29293):     at dalvik.system.NativeStart.main(Native Method)

Another leaked ServiceConnection

06-26 10:50:12.420 E/ActivityThread(29293): Activity crosspuppy.SplashScreenActivity has leaked ServiceConnection expansiondownloader.client.ClientMarshaller_DownloaderServiceConnection_ServiceConnection@408015f8 that was originally bound here
06-26 10:50:12.420 E/ActivityThread(29293): android.app.ServiceConnectionLeaked: Activity crosspuppy.SplashScreenActivity has leaked ServiceConnection expansiondownloader.client.ClientMarshaller_DownloaderServiceConnection_ServiceConnection@408015f8 that was originally bound here
06-26 10:50:12.420 E/ActivityThread(29293):     at android.app.LoadedApk$ServiceDispatcher.<init>(LoadedApk.java:923)
06-26 10:50:12.420 E/ActivityThread(29293):     at android.app.LoadedApk.getServiceDispatcher(LoadedApk.java:818)
06-26 10:50:12.420 E/ActivityThread(29293):     at android.app.ContextImpl.bindService(ContextImpl.java:1077)
06-26 10:50:12.420 E/ActivityThread(29293):     at android.content.ContextWrapper.bindService(ContextWrapper.java:370)
06-26 10:50:12.420 E/ActivityThread(29293):     at crosspuppy.SplashScreenActivity.n_onResume(Native Method)
06-26 10:50:12.420 E/ActivityThread(29293):     at crosspuppy.SplashScreenActivity.onResume(SplashScreenActivity.java:47)
06-26 10:50:12.420 E/ActivityThread(29293):     at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1153)
06-26 10:50:12.420 E/ActivityThread(29293):     at android.app.Activity.performResume(Activity.java:4428)
06-26 10:50:12.420 E/ActivityThread(29293):     at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2217)
06-26 10:50:12.420 E/ActivityThread(29293):     at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2255)
06-26 10:50:12.420 E/ActivityThread(29293):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1769)
06-26 10:50:12.420 E/ActivityThread(29293):     at android.app.ActivityThread.access$1500(ActivityThread.java:122)
06-26 10:50:12.420 E/ActivityThread(29293):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1002)
06-26 10:50:12.420 E/ActivityThread(29293):     at android.os.Handler.dispatchMessage(Handler.java:99)
06-26 10:50:12.420 E/ActivityThread(29293):     at android.os.Looper.loop(Looper.java:132)
06-26 10:50:12.420 E/ActivityThread(29293):     at android.app.ActivityThread.main(ActivityThread.java:4025)
06-26 10:50:12.420 E/ActivityThread(29293):     at java.lang.reflect.Method.invokeNative(Native Method)
06-26 10:50:12.420 E/ActivityThread(29293):     at java.lang.reflect.Method.invoke(Method.java:491)
06-26 10:50:12.420 E/ActivityThread(29293):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
06-26 10:50:12.420 E/ActivityThread(29293):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
06-26 10:50:12.420 E/ActivityThread(29293):     at dalvik.system.NativeStart.main(Native Method)

On Lollipop an exception is thrown

java.lang.IllegalArgumentException: Service Intent must be explicit: Intent

The following fixes it:
- var i = new Intent(LicensingServiceIntentString)
+ var i = new Intent(LicensingServiceIntentString).SetPackage("com.android.vending");
In LicenseChecker

Tested and working on Android TV.

See:
http://stackoverflow.com/questions/26530565/android-5-0-l-service-intent-must-be-explicit
response by:
milosmns (not officially accepted response)

Response codes may be wrong

I'm developing a app using xamarin and your plug-in for Google Licensing. And I can't get it to work... I set 3 testers to reply licenced in the developer console ( including myself ) and on those accounts I get NotLicenced response... Even logged in with my publisher account.

this is the code I'm using:

bool internet = Task.Run(CheckNET).Result;

// Construct the LicenseChecker with a policy.
var obfuscator = new AesObfuscator(Salt, this.PackageName, Android.Provider.Settings.Secure.GetString(ContentResolver, Android.Provider.Settings.Secure.AndroidId));
var policy = new ServerManagedPolicy(this, obfuscator);
this.checker = new LicenseChecker(this, policy, "Here is my API public key");

if (internet)
{
checker.CheckAccess(this);
}

I've fixed all application error messages in within the first tries (permissions and then NotMarketManaged) and now I'm stuck getting NotLicensed...

So the communication is working, just the License response isn't comming back as it should be for the emails listed in License Testing.

So.. with more testing it a bit strange... I've set ERROR_NON_MATCHING_UID as default response for testers and it did reply that exact error.... but when I changed back to Licensed I got NOT_LICENSED response...

After that it got way stranger... I've played a bit with the response options and this is what responses I got from Google Licensing server:

Google Console set to: -> Server Response:

Licensed -> Not_licensed
Licensed_old_Key -> Not_Licensed
Not_Licensed -> Not_licensed
Error_server_failuere -> LICENSED
Error_contacting_server -> Licensed
Error_invalid_packagename -> InvalidPackageName
error_nonmatching_uid -> NonMatchingUid

so... can anyone explain what is going on? Could the plugin be analysing the codes wrongly?

I've checked the plugin code and this is what I found that it is using these response codes:

Licensed = 0x0,
NotLicensed = 0x1,
LicensedOldKey = 0x2,
NotMarketManaged = 0x3,
ServerFailure = 0x4,
OverQuota = 0x5,
ErrorContactingServer = 0x101,
InvalidPackageName = 0x102,
NonMatchingUid = 0x103

can anyone confirm if these are the correct codes that Google Licensing replies?

Missing Uses-Permission

needs to be added to the sample project, and should be noted in documentation.

I tested on android 4.0 Galaxy Nexus.
Got via:
http://developer.android.com/guide/google/play/licensing/adding-licensing.html#manifest-permission

Crash in Client Marshaller during download of expansion package

Hi Matt, its Ryan from Buzz Interactive.
Thanks for the recent update, it has generally been running smoothly but we have noticed a particular crash which happens occasionally in the Client Marshaller. I have pasted a screenshot and here is the trace:

System.ArgumentException: 'jobject' must not be IntPtr.Zero.
Parameter name: jobject
at Android.Runtime.JNIEnv.CallObjectMethod (intptr,intptr,Android.Runtime.JValue[]) [0x00010] in /Users/builder/data/lanes/monodroid-mlion-monodroid-4.20-series/ba9bbbdd/source/monodroid/src/Mono.Android/src/Runtime/JNIEnv.g.cs:187
at Android.OS.Bundle.GetString (string) [0x00034] in /Users/builder/data/lanes/monodroid-mlion-monodroid-4.20-series/ba9bbbdd/source/monodroid/src/Mono.Android/platforms/android-21/src/generated/Android.OS.Bundle.cs:818
at ExpansionDownloader.Client.ClientMarshaller/DownloaderServiceConnection.SendMessage (Android.OS.Message) [0x00030] in /Users/ryanpalmer/Documents/Clients/Git_Repos/D/Dogbite/Mutu Android/ExpansionDownloader/Client/ClientMarshaller.cs:225
at Android.OS.ActionHandlerCallback.HandleMessage (Android.OS.Message) [0x00000] in /Users/builder/data/lanes/monodroid-mlion-monodroid-4.20-series/ba9bbbdd/source/monodroid/src/Mono.Android/src/Android.OS/Handler.cs:75
at Android.OS.Handler/ICallbackInvoker.n_HandleMessage_Landroid_os_Message_ (intptr,intptr,intptr) [0x00011] in /Users/builder/data/lanes/monodroid-mlion-monodroid-4.20-series/ba9bbbdd/source/monodroid/src/Mono.Android/platforms/android-21/src/generated/Android.OS.Handler.cs:76
at at (wrapper dynamic-method) object.f77b0410-1841-4cd6-a6e9-ee511fde2dde (intptr,intptr,intptr) <IL 0x00017, 0x0004b>

Exception Thrown when keys are not in server policy data

Inside of "ProecessServerResponse" it looks like only the "VT" is there.

I changed it to this in the else:
this.SetValidityTimestamp(extras.ContainsKey("VT") ? extras["VT"] : DefaultValidityTimestamp);
this.SetRetryUntil(extras.ContainsKey("GT") ? extras["GT"] : DefaultRetryUntil);
this.SetMaxRetries(extras.ContainsKey("GR") ? extras["GR"] : DefaultMaxRetries);