Implement in-app purchase in aide ide

Toturial on how add android In-App billing in  your android app project. In this tutorial im using anjlab v.3  library, this library supports: In-App Product Purchases (both non-consumable and consumable) and Subscriptions.

Note this tutorial require developer console in order to get license key from playstore.

Lets start coding, first goto your "build.gradle" and add anjlab library:

compile 'com.anjlab.android.iab.v3:library:1.0.44'
compile 'com.android.billingclient:billing:1.0'

Next goto you "AndroidManifest.xml" and add permission.

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

In your java files e.g "MainActivity.java"  add this following codes:

import com.anjlab.android.iab.v3.*;

implements BillingProcessor.IBillingHandler

BillingProcessor bp;
String LicenceKoy = "xxxxxxxxxxccccccccccccxxxxxxxxxxxxxxxccccccxxxxxxxxxxxxxxxccccccccccccxxxxxxxxxxxxxxxccccccxxxxxxxxxxxxxxxccccccccccccxxxxxxxxxxxxxxxccccccxxxxxxxxxxxxxxxccccccccccccxxxxxxxxxxxxxxxccccccxxxxxxxxxxxxxxxccccccccccccxxxxxxxxxxxxxxxccccccxxxxx";


Follow this screenshot:

bp = new BillingProcessor(this, LicenceKoy, this);

bp.purchase(donate.this, "plan1_5k");

plan1_5k is my product id and thats code is non-consumable.

and the last step:

@Override
public void onBillingInitialized() {
/*
* Called when BillingProcessor was initialized and it's ready to purchase
*/

}

@Override
public void onProductPurchased(String productId, TransactionDetails details) {
/*
* Called when requested PRODUCT ID was successfully purchased
*/

Toast.makeText(getApplicationContext(), "Payment successful ", Toast.LENGTH_LONG).show();

}

@Override
public void onBillingError(int errorCode, Throwable error) {
/*
* Called when some error occurred. See Constants class for more details
*
* Note - this includes handling the case where the user canceled the buy dialog:
* errorCode = Constants.BILLING_RESPONSE_RESULT_USER_CANCELED
*/

Toast.makeText(getApplicationContext(), "Payment unsuccessful!!", Toast.LENGTH_LONG).show();

}
@Override
public void onDestroy() {
if (bp != null) {
bp.release();
}
super.onDestroy();
}

@Override
public void onPurchaseHistoryRestored() {
/*
* Called when purchase history was restored and the list of all owned PRODUCT ID's
* was loaded from Google Play
*/
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (!bp.handleActivityResult(requestCode, resultCode, data)) {
super.onActivityResult(requestCode, resultCode, data);
}

}

Type of purchase:
Non-consumable:

bp.purchase(YOUR_ACTIVITY, "YOUR PRODUCT ID FROM GOOGLE PLAY CONSOLE HERE");

Subcribe:

 bp.subscribe(YOUR_ACTIVITY, "YOUR SUBSCRIPTION ID FROM GOOGLE PLAY CONSOLE HERE");

Consumable:

bp.consumePurchase("YOUR PRODUCT ID FROM GOOGLE PLAY CONSOLE HERE");

For  more documentation about anjlab library, please visit this link:  https://github.com/anjlab/android-inapp-billing-v3

Faq:
Q: How to get a licence  key?
A: After finish creating account in Developer console upload your apps, after finish upload click your app that uploaded and go to "Development tools" » "Services & API" and the result it look like this.

Q: How to get product id?
A:  Goto "Store presense" » "In-app product" » "Manage Product" and the result it look like this.

Q: Can i use your Lincence key and product id for beta testing?
A: yes, download  note this a sample only.. recommend create google developer account to get the license key and product id..

Watch the video tutorial here