com.google.android.vending.licensing

Class LicenseChecker

java.lang.Object

com.google.android.vending.licensing.LicenseChecker

All Implemented Interfaces:

android.content.ServiceConnection

public class LicenseChecker
extends Object
implements android.content.ServiceConnection

Client library for Android Market license verifications.

The LicenseChecker is configured via a Policy which contains the logic to determine whether a user should have access to the application. For example, the Policy can define a threshold for allowable number of server or client failures before the library reports the user as not having access.

Must also provide the Base64-encoded RSA public key associated with your developer account. The public key is obtainable from the publisher site.

Constructor Summary

Constructors

Constructor and Description
LicenseChecker(android.content.Context context, Policy policy, String encodedPublicKey)

Method Summary

Methods

Modifier and Type	Method and Description
void	checkAccess(LicenseCheckerCallback callback) Checks if the user should have access to the app.
void	onDestroy() Inform the library that the context is about to be destroyed, so that any open connections can be cleaned up.
void	onServiceConnected(android.content.ComponentName name, android.os.IBinder service)
void	onServiceDisconnected(android.content.ComponentName name)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LicenseChecker

public LicenseChecker(android.content.Context context,
              Policy policy,
              String encodedPublicKey)

Parameters:

context - a Context

policy - implementation of Policy

encodedPublicKey - Base64-encoded RSA public key

Throws:

IllegalArgumentException - if encodedPublicKey is invalid

Method Detail

checkAccess

public void checkAccess(LicenseCheckerCallback callback)

Checks if the user should have access to the app. Binds the service if necessary.

NOTE: This call uses a trivially obfuscated string (base64-encoded). For best security, we recommend obfuscating the string that is passed into bindService using another method of your own devising.

source string: "com.android.vending.licensing.ILicensingService"

Parameters:

callback -

onServiceConnected

public void onServiceConnected(android.content.ComponentName name,
                      android.os.IBinder service)

Specified by:

onServiceConnected in interface android.content.ServiceConnection

onServiceDisconnected

public void onServiceDisconnected(android.content.ComponentName name)

Specified by:

onServiceDisconnected in interface android.content.ServiceConnection

onDestroy

public void onDestroy()

Inform the library that the context is about to be destroyed, so that any open connections can be cleaned up.

Failure to call this method can result in a crash under certain circumstances, such as during screen rotation if an Activity requests the license check or when the user exits the application.