Android In App Billing: Can't start launchPurchaseFlow because launchPurchaseFlow is in progress

Question

I'm implementing In App Billing for the first time and I'm testing my first purchases using the static SKU ids.

It worked very well the first time. I called mHelper.launchPurchaseFlow(...) and completed the test purchase. My activity received the onActivityResult callback and I made sure to process it with mHelper.handleActivityResult(...). Everything was great.

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // Pass on the activity result to the helper for handling
    log("onActivityResult");
    if (!this.mHelper.handleActivityResult(requestCode, resultCode, data)) {
        log("cleared the launch flow");
        // 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);
    }
}

However, I wanted to test the next part, so I relaunched the app and tried to purchase the same SKU (the static purchased SKU).

mHelper.launchPurchaseFlow(rootActivity, "android.test.purchased", 10002,   
       new IabHelper.OnIabPurchaseFinishedListener() {

        @Override
        public void onIabPurchaseFinished(IabResult result, Purchase purchaseInfo) {
            if (result.isFailure()) {
                log("purchased failed");
            } else {
                log("purchase succeeded");
            }
        }
    }, "bGoa+V7g/yqDXvKRqq+JTFn4uQZbPiQJo4pf9RzJ");

The second time I try to purchase the item, my OnIabPurchaseFinishedListener is called and I see purchase failed in my log: "In-app billing error: Unable to buy item, Error response: 7:Item Already Owned"

That makes sense, but if I try to purchase another item, then my app crashes with the following error:

java.lang.IllegalStateException: Can't start async operation (launchPurchaseFlow) because another async operation(launchPurchaseFlow) is in progress.

The onActivityResult callback doesn't happen when I try to do the purchase that fails, so the launch flow that failed doesn't get handled and cleaned up. So, when I try another purchase, that's why it crashes because it's still supposedly in the middle of the last failed transaction.

What am I doing wrong? How do I ensure that the launchPurchaseFlow() is cleaned up after a failure?

Answer 1

I believe you just have to get the updated code the the in-app billing classes and you shouldn't run into the same problem again.

Google hasn't pushed out the changes to the SDK Manager yet as far as I know. Just copy/paste the new classes into yours and you shouldn't run into the problem any longer.

Have a look at the new code changes here: https://code.google.com/p/marketbilling/source/detail?r=7ec85a9b619fc5f85023bc8125e7e6b1ab4dd69f&path=/v3/src/com/example/android/trivialdrivesample/MainActivity.java

The classes that were changed as of March 15th are: IABHelper.java, Inventory.java, SkuDetails.java and some of the MainActivity.java file