Develop Reference

Implement in-app subscription for multi devices?

I'm making an Android application that will include a subscription using in-app billing from Google (https://developer.android.com/google/play/billing/index.html).
The aim is to let user to have 1 subscription per device.
I know that Google limit subscription for 1 google mail account but not for 1 device, that's why I made my own restriction using a server with a database.
So I made a pool of 10 subscriptions in the developer console product list and I want that when a device subscribe for the 1st subscription, a second device (using the same google account) will subscribe for the next subscription...
But when I want the second device chose automatically the next subscription not even bought on the account, it is saying to me "Product already own". The problem is that the current inventory is not refreshed.
I'm using IabHelper and here is the part of code where I'm trying to buy the next subscription available.
public void initIab() throws IabHelper.IabAsyncInProgressException {
iabHelper = new IabHelper(this, AppConfig.APPLICATION_KEY);
iabHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
public void onIabSetupFinished(IabResult result) throws IabHelper.IabAsyncInProgressException {
if (result.isSuccess()) {
iabHelper.queryInventoryAsync(iabInventoryListener());
billingServiceReady = true;
}
}
});
}
private IabHelper.QueryInventoryFinishedListener iabInventoryListener() {
return new IabHelper.QueryInventoryFinishedListener() {
public void onQueryInventoryFinished(IabResult result, Inventory inventory) {
if (iabHelper == null) {
return;
}
if (!result.isSuccess()) {
return;
}
String[] PREMIUM_KEYS = {"premium1","premium2","premium3","premium4","premium5","premium6","premium7","premium8","premium9","premium10"};
Purchase premiumPurchase = null;
String premiumKey;
boolean payload = false;
for(String key : PREMIUM_KEYS) {
if (inventory.hasPurchase(key)) {
premiumPurchase = inventory.getPurchase(key);
premiumKey = key;
payload = verifyDeveloperPayload(hasPurchase,premiumKey);
if(payload)
break;
}
}
session.setPremium(achatPremium != null && payload);
}
};
}
Please could you help me to find a solution ?
Sorry for my bad english.
Thank you.

Implementing In-app Billing

I am currently working on in app purchase in my application, when it launches I have always the error code -1003 querying owned items response signature verification failed when I arrive in IabHelper.QueryInventoryFinishedListener method.
I currently uses the example version of Google "Trivial Drive", I guess my signature is correct because I get to buy much when I use android.app.purchassed ...
The key seems correct to me because when I click like to buy a product that tells me that the publisher can not buy the product which is normal in itself (If I put anything I have another error saying the product does not exist). For cons, I have the same error when I put the test product "android.test.purchasse" then I should be able to test with it.
I made a purchase with android.test.purchasse there and I can not reset if you have already succeeded I'm interested.
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// load game data
loadData();
String base64EncodedPublicKey = "MY_KEY_BASE64";
PublicKey key = Security.generatePublicKey(base64EncodedPublicKey);
// Create the helper, passing it our context and the public key to verify signatures with
Log.d(TAG, "Creating IAB helper.");
mHelper = new IabHelper(this, base64EncodedPublicKey);
// enable debug logging (for a production application, you should set this to false).
mHelper.enableDebugLogging(true);
// Start setup. This is asynchronous and the specified listener
// will be called once setup completes.
Log.d(TAG, "Starting setup.");
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);
return;
}
// Have we been disposed of in the meantime? If so, quit.
if (mHelper == null) return;
// IAB is fully set up. Now, let's get an inventory of stuff we own.
Log.d(TAG, "Setup successful. Querying inventory.");
mHelper.queryInventoryAsync(mGotInventoryListener);
}
});
}
// 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(TAG, "Query inventory finished.");
// Have we been disposed of in the meantime? If so, quit.
if (mHelper == null) return;
// Is it a failure?
if (result.isFailure()) {
complain("Failed to query inventory: " + result);
return;
}
Log.d(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().
*/
if(inventory.hasPurchase(SKU_GAS))
{
Toast.makeText(getApplicationContext(),"PREMIUM",Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(getApplicationContext(),"NOT PREMIUM", Toast.LENGTH_SHORT).show();
}
// Do we have the premium upgrade?
Purchase premiumPurchase = inventory.getPurchase(SKU_PREMIUM);
mIsPremium = (premiumPurchase != null && verifyDeveloperPayload(premiumPurchase));
Log.d(TAG, "User is " + (mIsPremium ? "PREMIUM" : "NOT PREMIUM"));
// Do we have the infinite gas plan?
Purchase infiniteGasPurchase = inventory.getPurchase(SKU_INFINITE_GAS);
mSubscribedToInfiniteGas = (infiniteGasPurchase != null && verifyDeveloperPayload(infiniteGasPurchase));
Log.d(TAG, "User " + (mSubscribedToInfiniteGas ? "HAS" : "DOES NOT HAVE")
+ " infinite gas subscription.");
if (mSubscribedToInfiniteGas) mTank = TANK_MAX;
// Check for gas delivery -- if we own gas, we should fill up the tank immediately
Purchase gasPurchase = inventory.getPurchase(SKU_GAS);
if (gasPurchase != null && verifyDeveloperPayload(gasPurchase)) {
Log.d(TAG, "We have gas. Consuming it.");
mHelper.consumeAsync(inventory.getPurchase(SKU_GAS), mConsumeFinishedListener);
return;
}
updateUi();
setWaitScreen(false);
Log.d(TAG, "Initial inventory query finished; enabling main UI.");
}
};
Have you ever been concerned? I see no way out for this bug help from you will be appreciated.
thank you

You need to create a test account, and put it in the playstore admin page.

Manage subscription on Android app

I need to add a subscription support to my application, so that the user can buy a subscription for a year of service.
I just have created the subscription on Google Developer Console.
My problem is: I don't have any idea how I can check the user subscription.
I'm working to do this:
When my app is started by the user, if there is network, the app contacts the Play Store and checks if the user has bought the subscription and the payment date. These data are always saved on locale file, so if there is no network the app will use the local data for checking;
If the user has bought the subscription I check if it's been over a year. In fact I have read on internet that Play Store provides only the payment date and not the finish subscription date;
If the checking is true the app will work in Premium mode and not in Standard mode;
Now the problems:
How do I check the purchase? Can I use hasPurchase() method like in normal in-app?
If I need to use hasPurchase() on point 1) does this method return False if the user don't renew the subscription after a year?
How can I know the purchase date?
I copy a piece of code, this is a valid code to check normal in-app and I'd like to edit it to use it in subscription checking:
private void checkForPremium() {
final IabHelper buyHelper = new IabHelper(this, "MYKEY");
// initialize the InApp Billing system
buyHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
#Override
public void onIabSetupFinished(IabResult result) {
if (!result.isSuccess()) {
buyHelper.dispose();
Log.e("MYAPP", "Error: " + result);
return;
}
// Get a list of all products the user owns
buyHelper.queryInventoryAsync(new IabHelper.QueryInventoryFinishedListener() {
#Override
public void onQueryInventoryFinished(IabResult result, Inventory inv) {
if (result.isFailure()) {
buyHelper.dispose();
Log.e("MYAPP", "Error: " + result);
} else {
boolean isPremium = inv.hasPurchase("MYSKU");
inv.getSkuDetails().
buyHelper.dispose();
// Forward to the currect activity depending on premium / demo mode
if (isPremium) {
if(menu != null){
MenuItem item = menu.findItem(R.id.action_premium);
item.setVisible(false);
}
Log.w("MYAPP", "PREMIUM");
} else {
if(menu != null){
MenuItem item = menu.findItem(R.id.action_premium);
item.setVisible(true);
}
Log.w("MYAPP", "NO PREMIUM");
}
}
}
});
}
});
}

Android iapV3: consuming an ond item

I am trying to implement both consumable & non consumable items.
My problem : I would like to consume an item bought sometime ago (as I purchased and didn't consume it immediately (what an error...)).
I've tried calling the consumeItem(); method when receiving "already bought" message in my purchase handler, but every time I call this method on this product (works for the new ones), I get a NullPointerException.
Here are my methods :
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(SKU),
mConsumeFinishedListener);
}
}
};
IabHelper.OnConsumeFinishedListener mConsumeFinishedListener = new IabHelper.OnConsumeFinishedListener() {
public void onConsumeFinished(Purchase purchase, IabResult result) {
if (result.isSuccess()) {
// clickButton.setEnabled(true);
} else {
// handle error
}
}
};
Any help would be welcome :)

Apparently, you can only consume an item when the puchase is made.
Well, to solve the problem, I implemented the concerned product consumption, and canceled my test order on my merchant account. All worked fine when Google cache updated.

mHelper.launchPurchaseFlow start twice

For buy i have code
public void onClick(View v)
{
// FIRST CHECK IF THE USER IS ALREADY A SUBSCRIBER.
mHelper.launchPurchaseFlow(SubscribeIntroActivity.this, SUBSCRIBE_SKU, RC_REQUEST, mPurchaseFinishedListener);
}
public void onClick(View v)
{
// FIRST CHECK IF THE USER IS ALREADY A SUBSCRIBER.
mHelper.launchPurchaseFlow(SubscribeIntroActivity.this, SUBSCRIBE_SKU, RC_REQUEST, mPurchaseFinishedListener);
}
IabHelper.OnIabPurchaseFinishedListener mPurchaseFinishedListener = new IabHelper.OnIabPurchaseFinishedListener() {
public void onIabPurchaseFinished(IabResult result, Purchase purchase) {
Log.d(TAG, "Purchase finished: " + result + ", purchase: " + purchase);
// if we were disposed of in the meantime, quit.
if (mHelper == null) return;
if (result.isFailure()) {
Log.d(TAG,"Error purchasing: " + result);
return;
}
if (!verifyDeveloperPayload(purchase)) {
Log.d(TAG,"Error purchasing. Authenticity verification failed.");
return;
}
Log.d(TAG, "Purchase successful.");
if (purchase.getSku().equals(SKU_PREMIUM)) {
// bought the premium upgrade!
Log.d(TAG, "Purchase is premium upgrade. Congratulating user.");
Log.d(TAG,"Thank you for upgrading to premium!");
mIsPremium = true;
isShortVersion=false;
DrawIsShortVersion();
}
}
};
Error in LOG IS
Caused by: java.lang.IllegalStateException: Can't start async operation (launchPurchaseFlow) because another async operation(launchPurchaseFlow) is in progress.
when i click button its open buyer dialog and i can buy without any problem, but if i click button dialog is opened, Push BACK hardware button on device (didnt buy) i see first activity with button BUY, push it for buy again and raise error. May be somebody know about this error? what i do wrong?
... added if (mHelper != null) mHelper.flagEndAsync(); before call launchPurchaseFlow, now no errors, but mHelper.flagEndAsync(); kill previos task ?

Can you post your Logs?
In most cases an error occours when an Async PurcaseFlow is running and yout try to run an other Purcase.
what are you doing in your Purcase Listener?
Edit: you have multiple Coices to make that:
First: create a global boolean -> mTaskIsRunning;
private void doBuyProduct(int id){
if(!mTaskIsRunning){
mHelper.launchPurchaseFlow(SubscribeIntroActivity.this, SUBSCRIBE_SKU, RC_REQUEST, mPurchaseFinishedListener);
mTaskIsRunning=true;
}
}
Then in your Listener:
....
mTaskIsRunning=false;
Or you can disable the Buttons while a Task is Running
Same Procedure :
private void doBuyProduct(int id){
disableBuyButtons();
mHelper.launchPurchaseFlow(SubscribeIntroActivity.this, SUBSCRIBE_SKU, RC_REQUEST, mPurchaseFinishedListener);
}
and in the FinishListener:
enableButtons();