Android Studio sample with easy license checker and LVL
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EasyLVL
LicenseVerificationLibrary
gradle/wrapper
.gitignore
LICENSE
README.md
build.gradle
gradlew
gradlew.bat
settings.gradle

README.md

android-easy-lvl

Android Studio project sample with easy license checker and LVL (License Verification Library / play_licensing).
You can implement lvl codes easily by (1)copying libraries into your project and (2)editing minimum codes.

How to use

Download android-easy-lvl.

$ git clone https://github.com/ishida/android-easy-lvl EasyLVLProject

Copy LicenseVerificationLibrary to Your Android Studio Project

$ cp -r EasyLVLProject/LicenseVerificationLibrary YourAppProject/
$ mkdir -p YourAppProject/YourApp/src/main/java/com/i4da/easylvl
$ cp EasyLVLProject/EasyLVL/src/main/java/com/i4da/easylvl/EasyLicenseChecker.java YourAppProject/YourApp/src/main/java/com/i4da/easylvl/
$ cd YourAppProject

Get your android application licence key on Google Play Developer Console.
Note that your application need to be paid one and be released.

Set the key into EasyLicenseChecker.BASE64_PUBLIC_KEY in EasyLVL/src/main/java/com/i4da/easylvl/EasyLicenseChecker.java.

private static final String BASE64_PUBLIC_KEY = "REPLACE THIS WITH YOUR PUBLIC KEY";

Add codes into AndroidManifest.xml

$ vi YourApp/src/main/AndroidManifest.xml

    <manifest
        ...

        <!-- Devices >= 3 have version of Android Market that supports licensing. -->
        <uses-sdk android:minSdkVersion="3" />
        <!-- Required permission to check licensing. -->
        <uses-permission android:name="com.android.vending.CHECK_LICENSE" />

        ...
    </manifest>

Add codes into YourApp/build.gradle

$ vi YourApp/build.gradle

    dependencies {
        ...

        compile 'com.android.support:support-v4:+'
        compile project(':LicenseVerificationLibrary')

        ...
    }

Edit settings.gradle

$ vi settings.gradle

    include ':YourApp', ':LicenseVerificationLibrary'

Click "Sync Project with Gradle Files" and "Rebuild Project" at Android Studio Menu.

Add codes to use EasyLicenseChecker like the sample MainActivity.java.

import com.i4da.easylvl.EasyLicenseChecker;

...

private EasyLicenseChecker mLicenseChecker;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    mLicenseChecker = new EasyLicenseChecker(this, new Handler());
    mLicenseChecker.start();
}

@Override
protected void onDestroy() {
    super.onDestroy();
    if (mLicenseChecker != null) mLicenseChecker.finish();
}

That's all.