android: Inapp billing: Error response: 7:Item Already Owned

Question

I am learning to implement an in-app billing for my app such that people can for example, donate $ when press the donate button.

The user is allowed to donate more than one time, i.e. the purchase is consumable.

The codes below are sourced from the TrivalDrive sample and some tutorials from the web:

Code:

IabHelper mHelper;
static final String ITEM_SKU = "android.test.purchased"; 

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

    buy10Button = (Button) findViewById(R.id.buy10Button); 
    buy15Button = (Button) findViewById(R.id.buy15Button); 
    buy20Button = (Button) findViewById(R.id.buy20Button);      

    String base64EncodedPublicKey = "keykeykey";

    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);
               return;
            } 
            if (mHelper == null) 
            {
                return;
            }          
            Log.d(TAG, "In-app Billing is set up OK");
          }
    });     
}

public void buy10Click(View view) 
{
    mHelper.launchPurchaseFlow(this, ITEM_SKU, 10001,  mPurchaseFinishedListener, "");
}

public void buy15Click(View view) 
{

}

public void buy20Click(View view) 
{

}   

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) 
{
    if (mHelper == null) return;  
    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 (mHelper == null) return;
        if (result.isFailure()) 
        {
           // Handle error
               return;
        }      
        else if ((purchase.getSku().equals(ITEM_SKU)))   
        {
           consumeItem();
        }              
    }
};

public void consumeItem() 
{
    mHelper.queryInventoryAsync(mReceivedInventoryListener);
}

IabHelper.QueryInventoryFinishedListener mReceivedInventoryListener = new IabHelper.QueryInventoryFinishedListener() 
{
    public void onQueryInventoryFinished(IabResult result, Inventory inventory) 
    {
        if (mHelper == null) return;
        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 (mHelper == null) return;
        if (result.isSuccess()) 
        {
            Toast.makeText(InAppBillingActivity.this, "Thank you for your donation!!", Toast.LENGTH_LONG).show();   
        } 
        else 
        {
            // handle error
        }
    }
};

Question:

Yet I keep on receiving E/IabHelper(13392): In-app billing error: Unable to buy item, Error response: 7:Item Already Owned error and that the payment dialog of the Google Play just does not popup.

I have researched and found out many similar situations, some suggested to wait for a few minute and then the purchase will be reset by itself, but I have waited for almost an hour but it still sucks.

I have also found that someone suggest to change the IabResult public boolean isSuccess() { return mResponse == IabHelper.BILLING_RESPONSE_RESULT_OK; } to return also the BILLING_RESPONSE_RESULT_ITEM_ALREADY_OWNED as isSuccess = true, yet i dont know how to amend such...

How could the problem be fixed? Thanks!!

Answer 1

You purchased "android.test.purchased" but did not consume it. However, if you forgot to consume it immediately, it is not easy to consume it again. We can wait for 14 days. The fake purchase will be cleared automatically. But it is not acceptable.

I spent a lot of time finding the solution:

Add this line to get debug info.

_iabHelper.enableDebugLogging(true, "TAG");

Run the app. In LogCat, you will see a json string like

{"packageName":"com.example","orderId":"transactionId.android.test.purchased","productId":"android.test.purchased","developerPayload":"123","purchaseTime":0,"purchaseState":0,"purchaseToken":"inapp:com.example:android.test.purchased"}

Consume it manually (Replace THAT_JSON_STRING with your json string)

    Purchase purchase;
    try {
        purchase = new Purchase("inapp", THAT_JSON_STRING, "");
        _iabHelper.consumeAsync(purchase, new OnConsumeFinishedListener() {

            @Override
            public void onConsumeFinished(Purchase purchase, IabResult result) {
                Log.d("TAG", "Result: " + result);
            }
        });
    } catch (JSONException e) {
        e.printStackTrace();
    }

_iabHelper is mHelper.