If you have implemented Google Play IAP and you desire to add Myket Payment solution to your product, you are just 3 little steps behind. A 3-minor-adjustment by which you will be able to transfer a Game/Application working with Google Play IAP to Myket IAP.

First Step (Adjustment 1):

In file AndroidManifest.xml find the string:

<uses-permission android:name="com.android.vending.BILLING" />

And substitute that for:

<uses-permission android:name="ir.mservices.market.BILLING" />

Second Step (Adjustment 2):

In class IabHelper find this piece of code:

Intent serviceIntent = new Intent("com.android.vending.billing.InAppBillingService.BIND");
serviceIntent.setPackage("com.android.vending");

And replace it with below string:

Intent serviceIntent = new Intent("ir.mservices.market.InAppBillingService.BIND");
serviceIntent.setPackage("ir.mservices.market");

And replace it with below string:

Third Step (Adjustment 3):

Receive the Public Key of your Game/Application from Myket Developer Panel and use it when building IabHelper:

mHelper = new IabHelper(context, base64EncodedPublicKey);

Eventually, after implementing these changes, Test your Game/Application.