InappBilling Error- authentication is required. you need to sign into your google account

Question

I am trying to make a demo of inappbilling. I followed this tutorial for studying this.

Lemme tell the steps I followed for doing this task

1. I used the below mentioned code

   package com.ohn.inappbilling;
   
   import android.content.Intent;
   import android.os.Bundle;
   import android.support.v7.app.ActionBarActivity;
   import android.util.Log;
   import android.view.View;
   import android.widget.Button;
   
   import com.hello.inappbilling.util.IabHelper;
   import com.hello.inappbilling.util.IabResult;
   import com.hello.inappbilling.util.Inventory;
   import com.hello.inappbilling.util.Purchase;
   import com.ohn.inappbilling.R;
   
   public class MainActivity extends ActionBarActivity {
   
   private static final String TAG = "com.hello.inappbilling";
   static final String ITEM_SKU = "com.buttonclick";
   IabHelper mHelper;
   private Button clickButton;
   private Button buyButton;
   
   
   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
       buyButton = (Button) findViewById(R.id.buyButton);
       clickButton = (Button) findViewById(R.id.clickButton);
       clickButton.setEnabled(false);
       String base64EncodedPublicKey = "******";
   
       mHelper = new IabHelper(this, base64EncodedPublicKey);
   
       mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
           public void onIabSetupFinished(IabResult result) {
               if (!result.isSuccess()) {
                   Log.d(TAG, "In-app Billing setup failed: " + result);
               } else {
                   Log.d(TAG, "In-app Billing is set up OK");
               }
           }
       });
       //throw new RuntimeException();
   }
   
   public void buttonClicked(View view) {
       clickButton.setEnabled(false);
       buyButton.setEnabled(true);
   }
   
   public void buyClick(View view) {
        mHelper.launchPurchaseFlow(this, ITEM_SKU, 10001,   
              mPurchaseFinishedListener, "mypurchasetoken");
   }
   
   @Override
   protected void onActivityResult(int requestCode, int resultCode, 
        Intent data) 
   {
         if (!mHelper.handleActivityResult(requestCode, 
                 resultCode, data)) {     
           super.onActivityResult(requestCode, resultCode, data);
         }
   }
   
   IabHelper.OnIabPurchaseFinishedListener mPurchaseFinishedListener 
   = new IabHelper.OnIabPurchaseFinishedListener() {
   public void onIabPurchaseFinished(IabResult result, 
                   Purchase purchase) 
   {
      if (result.isFailure()) {
         // Handle error
         return;
    }      
    else if (purchase.getSku().equals(ITEM_SKU)) {
        consumeItem();
       buyButton.setEnabled(false);
   }
   
   }
   
   
   };
   
   public void consumeItem() {
       mHelper.queryInventoryAsync(mReceivedInventoryListener);
   }
   
   IabHelper.QueryInventoryFinishedListener mReceivedInventoryListener 
      = new IabHelper.QueryInventoryFinishedListener() {
          public void onQueryInventoryFinished(IabResult result,
             Inventory inventory) {
   
   
             if (result.isFailure()) {
             // Handle failure
             } else {
                    mHelper.consumeAsync(inventory.getPurchase(ITEM_SKU), 
               mConsumeFinishedListener);
             }
       }
   };
   
   IabHelper.OnConsumeFinishedListener mConsumeFinishedListener =
   new IabHelper.OnConsumeFinishedListener() {
    public void onConsumeFinished(Purchase purchase, 
          IabResult result) {
   
   if (result.isSuccess()) {                
         clickButton.setEnabled(true);
   } else {
          // handle error
   }
   }
   };
   
   @Override
   public void onDestroy() {
       super.onDestroy();
       if (mHelper != null) mHelper.dispose();
       mHelper = null;
   }
   
   }
   

2. I created apk using File-Export-AndroidProject and uploaded this in alphatesting.

3. I added users(Google group) in Manage list of testers in alpha testing.

4. I added the product in In-app Product and give id to it com.buttonclick

5. In settings in Gmail accounts with testing access I added Gmail id's here also. None of the id is developer id.

Can anyone tell solution for this problem. I have tried all the solutions available on StackoverFlow.

Answer 1

I found solution for this problem.

I published this apk on playstore and then I downloaded apk from playstore and ran that and It worked fine

I think the reason behind this problem is The google account that I was using for testing may be it was not the main account.