IN App Purchase – Android – Simplified source code

Hi all,

I have already showed you how to implement in app purchase in Android.
Please go through this post before reading this article.

This is how the MainActivity source code will look like.

package com.coderzheaven.inappdemo;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Toast;

import com.coderzheaven.android.util.IabHelper;
import com.coderzheaven.inapp.InAppPurchase;
import com.coderzheaven.inapp.InAppStateListener;

public class MainActivity extends Activity implements OnClickListener,
		InAppStateListener {

	static final String TAG = "INAPPTESTING";

	// INAPP
	IabHelper mHelper;
	InAppPurchase inapp;
	static String SKU_INAPPITEM_ID = "android.test.purchased";

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

	}

	@Override
	public void onClick(View v) {

		if (v.getId() == R.id.button_query) {

			showToast("Querying Items");
			inapp = new InAppPurchase(this, this, SKU_INAPPITEM_ID);
			mHelper = inapp.QueryInventry();

		} else {

			if (inapp != null)
				inapp.initiatePurchase();
			else
				showToast("Please click query items before purchasing");

		}

	}

	public void showToast(String msg) {
		Toast.makeText(this, msg, Toast.LENGTH_SHORT).show();
		;
	}

	@Override
	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
		Log.d(TAG, "onActivityResult(" + requestCode + "," + resultCode + ","
				+ data);

		// Pass on the activity result to the helper for handling
		if (!mHelper.handleActivityResult(requestCode, resultCode, data)) {
			// not handled, so handle it ourselves (here's where you'd
			// perform any handling of activity results not related to in-app
			// billing...
			super.onActivityResult(requestCode, resultCode, data);
		} else {
			Log.d(TAG, "onActivityResult handled by IABUtil.");
		}
	}

	// IN APP PURCHASE LISTENERS

	@Override
	public void onInAppInitialiseError() {
		System.out.println("onInAppInitialiseError");
		showToast("In App initialise Error.");
	}

	@Override
	public void onInAppInitialiseSuccess() {
		System.out.println("onInAppInitialiseSuccess");
		showToast("In App initialise Success.");
	}

	@Override
	public void onQueryInventryCompleted() {
		System.out.println("onQueryInventryCompleted");
		//showToast("Querying Items Completed.");
	}

	@Override
	public void onQueryInventryError(String message) {
		System.out.println("onQueryInventryError : ");
		showToast("Querying Items Error.");
	}

	@Override
	public void onAlreadyPurchased(String inappItemID) {
		System.out.println("onAlreadyPurchased");
		showToast("Item already Purchased.");
	}

	@Override
	public void onItemNotPurchased(String inappItemID) {
		System.out.println("onItemNotPurchased : " + inappItemID);
		showToast("Item not purchased");
	}

	@Override
	public void onPurchaseSuccessfull(String inappItemID) {
		System.out.println("onPurchaseSuccessfull : " + inappItemID);
		showToast("Purchase Successful");
	}

	@Override
	public void onPurchaseError(String inappItemID, String message) {
		System.out.println("onPurchaseError : " + inappItemID);
		showToast("Purchase Error");
	}

}

You can download the complete source code from here itself.