Develop Reference

How to check user status on my app? In App Billing

I´m implementing In app Billing on my app, which let the user go to a "premium version of the app". In the premium version of the app the user will be able to click 3 buttons and use their functions. But that is not the problem.
The problem is how to check if the user has purchased the "premium version" yet and use all the app functions?
This is my code:
private void promptForUpgrade() {
AlertDialog.Builder upgradeAlert = new AlertDialog.Builder(this);
upgradeAlert.setTitle("Upgrade?");
upgradeAlert.setMessage("Do you want to upgrade to unlimited version?");
upgradeAlert.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
//set progress dialog and start the in app purchase process
upgradeDialog = ProgressDialog.show(selector.this, "Please wait", "Upgrade transaction in process", true);
/* TODO: for security, generate your payload here for verification. See the comments on
* verifyDeveloperPayload() for more info. Since this is a SAMPLE, we just use
* an empty string, but on a production app you should carefully generate this. */
String payload = "developerinnovaciones#gmail.com";
try {
mHelper.launchPurchaseFlow(selector.this, SKU_PREMIUM, RC_REQUEST,
mPurchaseFinishedListener, payload);
} catch (IabHelper.IabAsyncInProgressException e) {
e.printStackTrace();
}
}
}).setNegativeButton("Nop", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
upgradeAlert.show();
}
and this is the OnIabPurchaseFinishedListener
IabHelper.OnIabPurchaseFinishedListener mPurchaseFinishedListener
= new IabHelper.OnIabPurchaseFinishedListener() {
public void onIabPurchaseFinished(IabResult result, Purchase purchase)
{
// if we were disposed of in the meantime, quit.
if (mHelper == null) return;
if (result.isFailure()) {
alert("Error purchasing: " + result);
upgradeDialog.dismiss();
}
else if (purchase.getSku().equals(SKU_PREMIUM)) {
alert("Thank you for upgrade");
mIsPremium = true;
setUserStatus(true);
upgradeDialog.dismiss();
}
}
};
So basically I want to create a method which verify if the user is premium or not.
Hope you can help me :D

Within your onCreate method you should check the purchase status in your mHelper setup with an mHelper.queryInventoryAsync call.
mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
public void onIabSetupFinished(IabResult result) {
Log.d(TAG, "Setup finished.");
if (!result.isSuccess()) {
// Oh noes, there was a problem.
complain("Problem setting up in-app billing: " + result);
isBillingSupported = false;
return;
}
// Hooray, IAB is fully set up. Now, let's get an inventory of stuff we own.
Log.d(TAG, "Setup successful. Querying inventory.");
mHelper.queryInventoryAsync(false, mGotInventoryListener);
isBillingSupported = true;
}
});
mGotInventory I defined like this
// Listener that's called when we finish querying the items we own
IabHelper.QueryInventoryFinishedListener mGotInventoryListener = new IabHelper.QueryInventoryFinishedListener() {
public void onQueryInventoryFinished(IabResult result,
Inventory inventory) {
Log.d(TAG, "Query inventory finished.");
if (result.isFailure()) {
complain("Failed to query inventory: " + result);
return;
}
Log.d(TAG, "Query inventory was successful.");
// Do we have the premium upgrade?
isPremium = inventory.hasPurchase(SKU_PREMIUM);
Log.d(TAG, "User is " + (isPremium ? "PREMIUM" : "NOT PREMIUM"));
updateUi();
Log.d(TAG, "Initial inventory query finished; enabling main UI.");
}
};
isPremium is a boolean flag defaulting to false.
The updateUi method enables/disables buttons depending on the isPremium state.
You will probably want to set isPremium and call updateUi on purchase completion as well to ensure the premium features are enabled immediately.

How to initialize mService for In-App Billing

I am able to successfully purchase in-app billing items in my app, but I have not yet been able to successfully check which items the user has purchased, as I am getting a a null pointer exception on this line:
ownedItems = mService.getPurchases(3, getPackageName(), "inapp", null);
I did see the other posts on this topic, but those solutions either did not work in my case, or I don't fully understand the solution:
getPurchases() NullPointerException initializing mService
In App Null Pointer Exception
Android In-App billing: Null Pointer Exception
Here is the entire method:
private void checkOwnedItems() throws RemoteException {
Bundle ownedItems;
String sku = "";
ownedItems = mService.getPurchases(3, getPackageName(), "inapp", null);
int response = ownedItems.getInt("RESPONSE_CODE");
if (response == 0) {
ArrayList<String> ownedSkus = ownedItems.getStringArrayList("INAPP_PURCHASE_ITEM_LIST");
ArrayList<String> purchaseDataList = ownedItems.getStringArrayList("INAPP_PURCHASE_DATA_LIST");
if (purchaseDataList.size() > 0) {
//user owns 1 or more items
for (int i = 0; i < purchaseDataList.size(); ++i) {
sku = ownedSkus.get(i);
}
Toast.makeText(SettingsActivity.this, "You own these features: " + sku, Toast.LENGTH_LONG).show();
} else {
//user owns zero items, launch purchase flow
MACAddress = UniqueID.getMACAddress("wlan0");
int requestCode = 22222;
mHelper.launchPurchaseFlow(SettingsActivity.this, productID, requestCode, mPurchaseFinishedListener, MACAddress);
}
}
}
I ran the debugger, and it appears that mService is null. Where and how am I supposed to initialize mService?
Currently I am trying to initialize mService in the onServiceConnected method, but perhaps onServiceConnected is never getting called. When and how should I be calling the onServiceConnected method?
ServiceConnection mServiceConn = new ServiceConnection()
{
#Override
public void onServiceConnected(ComponentName name, IBinder service) {
mService = IInAppBillingService.Stub.asInterface(service);
}
#Override
public void onServiceDisconnected(ComponentName name) {
mService = null;
}
};

I am able to successfully purchase in-app billing items in my app, but
I have not yet been able to successfully check which items the user
has purchased
You should use the Inventory instance to get the list of ownedItems purchased by the current user. For example, on app start I'm checking whether the user has purchased My_APP_DEMO_PRODUCT or not and based on that I'm changing the UI of the screen. For the above use case, I'm using QueryInventoryFinishedListener .
Note The following code is taken from the Google's IAB sample project.
// Listener that's called when we finish querying the items and subscriptions we own
IabHelper.QueryInventoryFinishedListener mGotInventoryListener = new IabHelper.QueryInventoryFinishedListener() {
public void onQueryInventoryFinished(IabResult result, Inventory inventory) {
Log.d(DEBUG_TAG, "Query inventory finished.");
// if we were disposed of in the meantime, quit.
if (mHelper == null) {
return;
}
// Is it a failure?
if (result.isFailure()) {
complain("Failed to query inventory: " + result);
return;
}
Log.d(DEBUG_TAG, "Query inventory was successful.");
/*
* Check for items we own. Notice that for each purchase, we check
* the developer payload to see if it's correct! See
* verifyDeveloperPayload().
*/
// Do we have the My_APP_DEMO_PRODUCT purchase.
Purchase premiumPurchase = inventory.getPurchase(My_APP_DEMO_PRODUCT
);
boolean isPurchased = (premiumPurchase != null && verifyDeveloperPayload(premiumPurchase));
if (isPurchased) {
Log.d(DEBUG_TAG, “User had purchased this My_APP_DEMO_PRODUCT product”);
// Do whatever you want
changeAppUI();
}
Log.d(DEBUG_TAG, "Initial inventory query finished; enabling main UI.");
}
};
And in Activity's onCreate() method,
mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
public void onIabSetupFinished(IabResult result) {
Log.d(DEBUG_TAG, "Setup finished.");
if (!result.isSuccess()) {
// Oh noes, there was a problem.
complain("Problem setting up in-app billing: " + result);
return;
}
if (mHelper == null) return;
// IAB is fully set up. Now, let's get an inventory of stuff we own.
Log.d(DEBUG_TAG, "Setup successful. Querying inventory.");
mHelper.queryInventoryAsync(mGotInventoryListener);
}
});

Android Studio In-App purchases configuration

I am setting up in-app purchases for my application and am stuck at a particular point. The code I have used so far is as follows:
IabHelper mHelper;
protected void onCreate(Bundle savedInstanceState) {
mHelper = new IabHelper(this, base64EncodedPublicKey); //base64EncodedPublicKey is a string declared earlier and not reposted here.
mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
public void onIabSetupFinished(IabResult result) {
if (!result.isSuccess()) {
Log.d(TAG, "Failed: " + result);
Toast.makeText(MainActivity.this, "IAB setup Failed", Toast.LENGTH_SHORT).show();
} else {
Log.d(TAG, "Worked");
Toast.makeText(MainActivity.this, "IAB setup Successful", Toast.LENGTH_SHORT).show();
final List additionalSkuList = new ArrayList();
additionalSkuList.add("remove_ad");
mHelper.queryInventoryAsync(true, additionalSkuList, mQueryFinishedListener);
}
}
});
At this point, everything seems to be going well. The "Worked" section of code triggers and is processed successfully. The code sends a request at this point to mHelper.queryInventoryAsync, which is configured as follows, outside of onCreate():
IabHelper.QueryInventoryFinishedListener mQueryFinishedListener = new IabHelper.QueryInventoryFinishedListener() {
public void onQueryInventoryFinished(IabResult result, Inventory inventory)
{
if (result.isFailure()) {
Toast.makeText(MainActivity.this, "Query Listener Error", Toast.LENGTH_SHORT).show();
return;
}
String removalPrice =
inventory.getSkuDetails("remove_ad").getPrice();
Toast.makeText(MainActivity.this, removalPrice, Toast.LENGTH_SHORT).show();
// update the UI
}
};
At this point, Toast triggers to say "Query Listener Error", indicating that if (result.isFailure()) has triggered. This is where I am stuck. It is not giving me any clues as to why this might be happening.
From the Developer Console, these are the details of my In-App product:
Name/ID: Remove Ad (remove_ad)
Type: Managed product
Last Update: Jul 15, 2015
Status: Active
What have I done incorrectly? The only thing I am not too sure about is how I have declared and used my arrayList, and where I have submitted a string value to .getPrice();

mHelper.launchPurchaseFlow(Activity.this, SKU, 11,
mPurchaseFinishedListener, "mypurchasetoken");
Call this method and implement listner like below in that you will get result
public IabHelper.OnIabPurchaseFinishedListener mPurchaseFinishedListener = new IabHelper.OnIabPurchaseFinishedListener() {
public void onIabPurchaseFinished(IabResult result,
Purchase purchase)
{
if (result.isFailure()) {
}
return;
}
};
Refer the below link:
http://www.techotopia.com/index.php/An_Android_Studio_Google_Play_In-app_Billing_Tutorial

SKU bought with IAP doesn't show up on as purchased on a second device owned by the same user

I get this complaint every so often that a user buys my premium features with IAP and that it works fine on the device they bought but their other device won't get the features, I ask them to reboot the other device and that usually fixes it. So the other day I tried to see if I could do something about this so I purchased on one of my devices (test account) and then I went to the other, killed my app to make sure it was starting from zero, and then stepped the code. The query of purchases was actually returning no purchases. It did not tell me about purchases until I tried to buy premium from that device. Trying to buy premium from that device didn't create a dialog or anything, it just returned as if nothing had happened but after that the device had that purchase on its inventory.
Here are the methods I have, I am using the IABHelper from Google's example and I think I updated it just a month ago.
public void createIABHelper(final Context ac) {
mHelper = new IabHelper(ac, myid);
try {
mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
public void onIabSetupFinished(IabResult result) {
if (!result.isSuccess()) {
// Oh noes, there was a problem.
Log.d(TAG, "Problem setting up In-app Billing: " + result);
} else {
iabSetup = true;
//queryIAB(ac);
queryIABPurchases(ac);
}
}
});
} catch (Throwable e) {
final String desc = "Error starting IABHelper";
Log.w(TAG, desc, e);
}
}
public void queryIAB(final Context ctx) {
List<String> additionalSkuList = new ArrayList<String>();
additionalSkuList.add(Constants.PREMIUM_UPGRADE);
IabHelper.QueryInventoryFinishedListener
mQueryFinishedListener = new IabHelper.QueryInventoryFinishedListener() {
public void onQueryInventoryFinished(IabResult result, Inventory inventory) {
if (result.isFailure()) {
// handle error
return;
} else {
Purchase p = inventory.getPurchase(Constants.PREMIUM_UPGRADE);
if (p != null) {
setHasPremiumPref(p.getPurchaseState() == 0);
} else {
setHasPremiumPref(false);
}
}
// inventory.hasDetails(PREMIUM_UPGRADE);
// update the UI
}
};
mHelper.queryInventoryAsync(true, additionalSkuList,
mQueryFinishedListener);
}
#Override
public void purchaseIAB(final Activity ac) {
if (iabSetup) {
try {
final String finalPayload = ....;
IabHelper.OnIabPurchaseFinishedListener mPurchaseFinishedListener
= new IabHelper.OnIabPurchaseFinishedListener() {
public void onIabPurchaseFinished(IabResult result, Purchase purchase) {
if (result.isFailure()) {
Log.d(TAG, "Error purchasing: " + result);
return;
} else if (purchase.getSku().equals(Constants.PREMIUM_UPGRADE)) {
Log.w(TAG, "Purchased " + purchase.getPurchaseState());
if (purchase.getDeveloperPayload().equals(finalPayload) && purchase.getPurchaseState() == 0) {
setHasPremiumPref(true);
} else {
Log.w(TAG, "Something went wrong verifying purchase.");
setHasPremiumPref(false);
}
}
}
};
mHelper.launchPurchaseFlow(ac, Constants.PREMIUM_UPGRADE, 10001,
mPurchaseFinishedListener, finalPayload);
} catch (Throwable ex) {
final String msg = "Error starting in-app purchase";
Log.w(TAG, msg, ex);
}
} else {
Log.w(TAG, "IAB not setup.");
}
}
public void queryIABPurchases(Context ctx) {
if (iabSetup) {
IabHelper.QueryInventoryFinishedListener mGotInventoryListener
= new IabHelper.QueryInventoryFinishedListener() {
public void onQueryInventoryFinished(IabResult result,
Inventory inventory) {
if (result.isFailure()) {
// handle error here
} else {
// does the user have the premium upgrade?
Purchase p = inventory.getPurchase(Constants.PREMIUM_UPGRADE);
if (p != null) {
setHasPremiumPref(p.getPurchaseState() == 0);
} else {
setHasPremiumPref(false);
}
// update UI accordingly
}
}
};
List<String> additionalSkuList = new ArrayList<String>();
additionalSkuList.add(Constants.PREMIUM_UPGRADE);
mHelper.queryInventoryAsync(false, additionalSkuList, mGotInventoryListener);
} else {
Log.w(TAG, "IAB not setup.");
}
}
Anyways, basically I use queryIABPurchases but p is always null on that second device. Is this an issue with test accounts or maybe something to do with time, do I maybe need to wait a few hours before testing on the second device?
Thanks.

Android - testing billing purchase with real item id gives error: Item Not Found

I have a situation where I tested on a test device with the item id: android.test.purchased
And things worked. Then once I changed that string with the real item id, I started getting Item Not Found error when I pressed the buy button.
Also the buy item is a subscription and not a 1-time purchase. Does that make a difference?
I was not sure which part of the code may be at fault, or what may be missing so here is the class for this:
public class SubscribeIntroActivity extends BaseActivity
{
IabHelper mHelper;
// Does the user have the premium upgrade?
boolean isSubscriber = false;
// (arbitrary) request code for the purchase flow
static final int RC_REQUEST = 105;
// Subscribe SKU
static final String SUBSCRIBE_SKU = "11";
// Subscribe SKU
static final String TAG = "BILLING";
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.subscribe_intro);
String base64EncodedPublicKey = "my_real_key";
// Create the helper, passing it our context and the public key to verify signatures with
mHelper = new IabHelper(this, base64EncodedPublicKey);
mHelper.enableDebugLogging(true);
mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
public void onIabSetupFinished(IabResult result)
{
if (!result.isSuccess())
{
// Oh noes, there was a problem.
//complain("Problem setting up in-app billing: " + result);
return;
}
// Hooray, IAB is fully set up. Now, let's get an inventory of stuff we own.
mHelper.queryInventoryAsync(mGotInventoryListener);
}
});
// Listener that's called when we finish querying the items we own
IabHelper.QueryInventoryFinishedListener mGotInventoryListener = new IabHelper.QueryInventoryFinishedListener() {
public void onQueryInventoryFinished(IabResult result, Inventory inventory) {
if (result.isFailure())
{
//complain("Failed to query inventory: " + result);
return;
}
Log.d(TAG, "Query inventory was successful.");
// Do we have the premium upgrade?
isSubscriber = inventory.hasPurchase(SUBSCRIBE_SKU);
Log.d(TAG, "User is " + (isSubscriber ? "SUBSCRIBER" : "NOT SUBSCRIBER"));
// Check for gas delivery -- if we own gas, we should fill up the tank immediately
if (inventory.hasPurchase( SUBSCRIBE_SKU ))
{
Log.d(TAG, "HAS SUBSCRIPTION");
return;
}
//updateUi();
// TODO: TELL USER HE IS SUBSCIBED AND TAKE THEM TO THE QUESTION
//setWaitScreen(false);
Log.d(TAG, "Initial inventory query finished; enabling main UI.");
}
};
Button subscribe = (Button)findViewById(R.id.subscribe);
subscribe.setOnClickListener(new Button.OnClickListener()
{
public void onClick(View v)
{
// FIRST CHECK IF THE USER IS ALREADY A SUBSCRIBER.
mHelper.launchPurchaseFlow(SubscribeIntroActivity.this, SUBSCRIBE_SKU, RC_REQUEST, mPurchaseFinishedListener);
// Send me an email that a comment was submitted on a question.
//sendEmail("My Questions -> Add Question", "Someone clicked on add-question from my questions. User id: " + user_id );
//Intent myIntent = new Intent(MotivationActivity.this, WePromoteActivity.class);
//MotivationActivity.this.startActivity(myIntent);
}
});
// mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
// public void onIabSetupFinished(IabResult result)
// {
// if (!result.isSuccess())
// {
// // Oh noes, there was a problem.
//
// Log.d("INAPP BILLING", "Problem setting up In-app Billing: " + result);
// }
//
// // Hooray, IAB is fully set up!
//
//
// // First arg is whether product details should be retrieved
// // The List argument consists of one or more product IDs (also called SKUs) for the products that you want to query.
// // the QueryInventoryFinishedListener argument specifies a listener is
// // notified when the query operation has completed
// // and handles the query response.
//// mHelper.queryInventoryAsync(false, new ArrayList ( ).add("1"),
//// mQueryFinishedListener);
//
// //mHelper.queryInventoryAsync(mGotInventoryListener);
//
//
//// mHelper.launchPurchaseFlow(SubscribeIntroActivity.this, "11" , 105, mPurchaseFinishedListener, "" );
// }
// });
}
IabHelper.QueryInventoryFinishedListener
mQueryFinishedListener = new IabHelper.QueryInventoryFinishedListener()
{
public void onQueryInventoryFinished(IabResult result, Inventory inventory)
{
if (result.isFailure()) {
// handle error
return;
}
String applePrice =
inventory.getSkuDetails("1").getPrice();
String bananaPrice =
inventory.getSkuDetails(SUBSCRIBE_SKU).getPrice();
}
// update the UI
};
IabHelper.OnIabPurchaseFinishedListener mPurchaseFinishedListener
= new IabHelper.OnIabPurchaseFinishedListener() {
public void onIabPurchaseFinished(IabResult result, Purchase purchase)
{
if (result.isFailure())
{
Log.d("ERROR", "Error purchasing: " + result);
return;
}
else if (purchase.getSku().equals("1"))
{
// consume the gas and update the UI
}
else if (purchase.getSku().equals(SUBSCRIBE_SKU))
{
// give user access to premium content and update the UI
Log.d(TAG, "PURCHASED: " + result);
}
}
};
IabHelper.QueryInventoryFinishedListener mGotInventoryListener
= new IabHelper.QueryInventoryFinishedListener() {
public void onQueryInventoryFinished(IabResult result,
Inventory inventory) {
if (result.isFailure()) {
// handle error here
}
else
{
// does the user have the premium upgrade?
isSubscriber = inventory.hasPurchase(SUBSCRIBE_SKU);
// update UI accordingly
}
}
};
#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.");
}
}
#Override
public void onDestroy()
{
super.onDestroy();
if (mHelper != null) mHelper.dispose();
mHelper = null;
}
}

Since this is a subscription I believe you must replace this line:
mHelper.launchPurchaseFlow(SubscribeIntroActivity.this, SUBSCRIBE_SKU, RC_REQUEST, mPurchaseFinishedListener);
with this one:
mHelper.launchSubscriptionPurchaseFlow(SubscribeIntroActivity.this, SUBSCRIBE_SKU, RC_REQUEST, mPurchaseFinishedListener);
At least this is what I use in my code and I have successfully tested it.

I don't think the new in-app billing version 3 currently supports subscriptions. I could be wrong, but I haven't seen any mention of subscriptions in the sample code or documentation, so that could be why you're receiving the the "Item not found" error.
In general, to test purchasing a real item, you need to upload a version of your app to the developer console (but you don't need to publish it), and you have to be using the same (signed) version to test with. It also takes Google Play some time to process/propagate newly added items...so sometimes you unfortunately just need to wait. Check out developer.android.com/training/in-app-billing/test-iab-app.html if you haven't already.

One more thing to know. Purchases doesn't appear immediately. You can test them after 2-3 hours from moment, when you publish it.
Sorry for my English =)

There's a limit of 20 items per request.
Even if you split them in groups of 20 items, it still does
skuList.addAll(inv.getAllOwnedSkus(itemType));
which guarantees an error if number_of_owned_items + number_of_queried_items is greater than 20, in particular, if number_of_owned_items is 21.
Now I understand why someone suggested rewriting the code from scratch from the very beginning.