Sunday, February 10, 2013

PhoneGap Android License Key App Checker Plugin

Update: Changed to be compatible with PhoneGap 3 and higher.

Here is a small blog about how to perform a check in a PhoneGap app on the Android platform to check whether a license key app has been installed or not. This is done by implementing a native Android PhoneGap plugin.

What does it do


It performs a check if two supplied android packages carry the same signature or not and returns true or false. It is not a 100% safe solution, as it is possible to manually install the license key app, but for common use it is pretty much okay.

How to do it


Create the class (CheckKey.java file) in the package "org.apache.cordova.plugins".


Create the javascript file "checkkey.js" and include it in your HTML AFTER the include of the phonegap/cordova javascript files.

checkkey.js



Add the following line to the "config.xml" file in your res folder of your Android project.

And from that point you can call the plugin in your application by using the statement below.

In your app (javascript)



The  script above can be adjusted to your liking of course.

If you have questions please let me know.

Copyright (c) 2015 Joram Teusink

MIT License

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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

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