How to Integrate In App Purchase Billing in Android

Hello Friends! Today I am going to share very useful blog for In App Purchase in Android. Google provide In App Billing faculty in Android. In App Purchase is a very easy and secure way for make payment online. Please follow my blog step by step:

Screen Shot

1. Create a new Project in Android.
2. Create MainActivity.java class.
3. Add activity_main.xml in your res/layout folder.
4. Add Billing services and permission in Manifest.xml.

Do’s

1. Create sign apk for your application.
2. Upload your apk on Google play store.
3. Create product for your application.
4. wait for 6-12 hour for update item’s on store.
5. Copy Key of your Google account and paste it into BillingSecurity.java class Line number 135-

   String base64EncodedPublicKey = "PUT YOUR PUBLIC KEY HERE";

6. Give Billing permissions in Manifest.xml
7. Add

   IMarketBillingService.java in com.android.vending.billing package.

Don’t

1. Don’t use emulator for testing its does not support Billing Services.
2. Don’t use unsigned apk for Billing services.
3. Don’t share your key with any one.

My Code-

1)MainActivity.java

package com.manish.inapppurchase;

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

public class MainActivity extends Activity implements OnClickListener {
 Button btn1, btn2, btn3;
 private Context mContext=this;
 private static final String TAG = "Android BillingService";
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  btn1 = (Button) findViewById(R.id.button1);
  btn2 = (Button) findViewById(R.id.button2);
  btn3 = (Button) findViewById(R.id.button3);
  btn1.setOnClickListener(this);
  btn2.setOnClickListener(this);
  btn3.setOnClickListener(this);
  
   startService(new Intent(mContext, BillingService.class));
         BillingHelper.setCompletedHandler(mTransactionHandler);
 }
 public Handler mTransactionHandler = new Handler(){
  public void handleMessage(android.os.Message msg) {
   Log.i(TAG, "Transaction complete");
   Log.i(TAG, "Transaction status: "+BillingHelper.latestPurchase.purchaseState);
   Log.i(TAG, "Item purchased is: "+BillingHelper.latestPurchase.productId);
   
   if(BillingHelper.latestPurchase.isPurchased()){
    showItem();
   }
  };
 
};
 @Override
 public void onClick(View v) {
  if (v == btn1) {
   if(BillingHelper.isBillingSupported()){
    BillingHelper.requestPurchase(mContext, "android.test.purchased");
         } else {
          Log.i(TAG,"Can't purchase on this device");
          btn1.setEnabled(false); // XXX press button before service started will disable when it shouldnt
         }
   Toast.makeText(this, "Shirt Button", Toast.LENGTH_SHORT).show();
  }
  if (v == btn2) {
   if(BillingHelper.isBillingSupported()){
    BillingHelper.requestPurchase(mContext, "android.test.purchased");
         } else {
          Log.i(TAG,"Can't purchase on this device");
          btn2.setEnabled(false); // XXX press button before service started will disable when it shouldnt
         }
   Toast.makeText(this, "TShirt Button", Toast.LENGTH_SHORT).show();
  }
  if (v == btn3) {
   if(BillingHelper.isBillingSupported()){
    BillingHelper.requestPurchase(mContext, "android.test.purchased");
         } else {
          Log.i(TAG,"Can't purchase on this device");
          btn3.setEnabled(false); // XXX press button before service started will disable when it shouldnt
         }
   Toast.makeText(this, "Denim Button", Toast.LENGTH_SHORT).show();
  }

 }

 private void showItem() {
  //purchaseableItem.setVisibility(View.VISIBLE);
 }

 @Override
 protected void onPause() {
  Log.i(TAG, "onPause())");
  super.onPause();
 }
 
 @Override
 protected void onDestroy() {
  BillingHelper.stopService();
  super.onDestroy();
 }
}

2)activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#0099CC"
    tools:context=".MainActivity" >

    <Button
        android:id="@+id/button1"
        android:layout_width="150dp"
        android:layout_height="35dp"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="40dp"
        android:background="#FFFFFF"
        android:text="Shirt for 5.4$" />

    <Button
        android:id="@+id/button2"
        android:layout_width="150dp"
        android:layout_height="35dp"
        android:layout_below="@+id/button1"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="10dp"
        android:background="#FFFFFF"
        android:text="Tshirt for 7.4$" />

    <Button
        android:id="@+id/button3"
        android:layout_width="150dp"
        android:layout_height="35dp"
        android:layout_below="@+id/button2"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="10dp"
        android:background="#FFFFFF"
        android:text="Denim for 10.7$" />

</RelativeLayout>

3)manifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.manish.inapppurchase"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="7"
        android:targetSdkVersion="16" />

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

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.manish.inapppurchase.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <service android:name=".BillingService" />

        <receiver android:name=".BillingReceiver" >
            <intent-filter>
                <action android:name="com.android.vending.billing.IN_APP_NOTIFY" />
                <action android:name="com.android.vending.billing.RESPONSE_CODE" />
                <action android:name="com.android.vending.billing.PURCHASE_STATE_CHANGED" />
            </intent-filter>
        </receiver>
    </application>

</manifest>

4) Zip Code
 

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