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Questions tagged [android-lvl]

Android licensing verification library

android-lvl stands for android license verification library, a system introduced by Google for developers to check if an application has been bought through the Android market. See more information here: Android Licensing

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App protection with LVL and explicit intents?

I've an app using the LVL. It consists (for simplicity) of two activities: The first one called LVLActivity checks the licence. If it fails, it simply finnishes, otherwise it launches the second activity called MainActivity with an explicit…
Tom
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Android LVL (GPlay licensing): always returns error 291 on first call of doCheck

I implement Google Play LVL (Licensing library) in order to guarantee the safety of my paid app. My problem is that when the app is launched for the first time, I get systematically error 291 (Error_Contacting_Server). I have to launch doCheck a…
toto_tata
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Referencing an imported module from an App (Licensing LVL)

I followed the instructions how to setup licensing for an Android App and I am stuck in referencing the imported module. https://developer.android.com/google/play/licensing/setting-up.html#download-lvl See on my screen, that I have imported the…
mcfly soft
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Android App not allow licensed access to my own App (using the developer account)

Recently I published my first Android App on the Market Place (Trophy-to-Gamerscore Converter). It's a licensed app that worked perfectly during testing and once I publish it - that is to say I was able to access and use my own app on my Android…
Peter
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How useful is the AESObfuscator

As far as I can tell, it's a ways of obfuscating/encrypting the shared prefs on your device, that store LVL info about last response, time to next retry etc. As the salt and deviceId (however you make it, which is the topic of another question i…
Russ Wheeler
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Is it possible to add a license check (using License Verification Library) to a Service?

The fourth task in integrating the LVL with one's application code, as is described by http://developer.android.com/guide/publishing/licensing.html, is "Adding code to check the license in one's application's main Activity". The document says: Once…
yno
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LVL fails (0x101 ERROR_CONTACTING_SERVER) w/ Android V2.3.5

I have a paid app on the Google Play Store and have been using the LVL library for the past two years. In the past, I tested my app on multiple devices including Android V2.3.5 (Gingerbread), V4.4 (KitKat) and V5.1 (Lollipop), everything worked fine…
Phil T.
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Making an Android App tamper resistant

The 01 September 2010 Android Developers' Blog discusses Securing Android LVL Applications. In order to make an app tamper resistant it describes the following technique :- In order for an attacker to remove the LVL from your code, they have to …
Simon Hutton
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Add Google Licensing Validation (LVL) Check in an Application made with Appcelerator

I've been trying to attach the Google Licensing Validation Check (https://developer.android.com/google/play/licensing/setting-up.html) to my application made with Appcelerator. I found a GIT repository…
Daniel Moreno
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Show one Dialog after another until License check passes

I'm trying to implement the LVL (Licensing Verification Library for Android), but running into a problem when the license check fails. I pop up a Dialog which explains that the license check failed and presents them with two buttons. One button is…
Kenny Wyland
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How to call the expansion file from my code if the expansion file is not found?

In my project I am able to upload the 470mb of my expansion file and it is getting download while I download my apk. If my expansion file is not found how should I direct my app to download the expansion file from play store? I tried following the…
Mahalakshmi Saravanan
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Android: Is it possible that LVL3 methods crash of their own?

My app checks for licensing by means of the Google library LVL3. The above mentioned verification is made of several steps and every possible exception and error is handled. The app functionality depends on the result of the check so if it fails the…
P5music
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Is there way to know Android application were bought or downloaded from other site?

For example user may download application from site or another Android device (and another Google account). Now I learning Android LVL (License Verification Library). This way can say about user verification or device (and user) verification?
Alexmelyon
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Implementing android licensing into Libgdx application

I am trying to implement licensing into my Libgdx project. I have created a new project using the licensing from the android SDK. As libgdx creates multiple projects(core, android,ios etc.) and all of the source code is stored in the core project. I…
helloworldhello
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Invalid LVL key! how to get LVL android key from unity?

this code is Sample code in unity "Google Play License Verification" asset. I build this project, and play form android phone. but, it show me "Invalid LVL key!" I think, I have to change follow string varibale. private string m_PublicKey_Base64 =…
Ares
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