Android in-app purchase crashing after payment

Question

I have implemented in app purchase in my app I have used "TrivialDrive" example for version 3 of in-app billing, I have tested app by using static responses all works as expected.

But when I download app from market, application crashes on successful purchase,

My code is of successful purchase

IabHelper.OnIabPurchaseFinishedListener mPurchaseFinishedListener = new IabHelper.OnIabPurchaseFinishedListener() {
public void onIabPurchaseFinished(IabResult result, Purchase purchase) {

    Log.d(TAG, "Purchase finished: " + result + ", purchase: " + purchase);
    if (result.isFailure()) {
    complain("Error purchasing: " + result);
    }

    if (purchase != null) {
    if (purchase.getSku().equals(Constants.IN_APP_PURCHASE_PRODUCT_ID)) {
        // bought the premium upgrade!
        String message = getResources().getString(R.string.app_purchase_successful_msg);
        mIsPremium = true;
        updateUi(mIsPremium);
        successAlert(message);
    }
    }
}
};

I have setting up message on successful purchase but i cant see this message, (means those linse are not executing) when I successfully purchased from it, application crashes after successful payment.

When relaunch app and try to buy item it says already purchased.

I got crash report from developer console.

02-09 02:01:13.181: E/AndroidRuntime(11530): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=10001, result=-1, data=Intent { (has extras) }} to activity {com.eknathkadam.grammaruplite/com.webrich.base.ui.GoogleInAppPurchaseActivity}: java.lang.NullPointerException
02-09 02:01:13.181: E/AndroidRuntime(11530):    at android.app.ActivityThread.deliverResults(ActivityThread.java:3141)
02-09 02:01:13.181: E/AndroidRuntime(11530):    at android.app.ActivityThread.handleSendResult(ActivityThread.java:3184)
02-09 02:01:13.181: E/AndroidRuntime(11530):    at android.app.ActivityThread.access$1100(ActivityThread.java:130)
02-09 02:01:13.181: E/AndroidRuntime(11530):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1243)
02-09 02:01:13.181: E/AndroidRuntime(11530):    at android.os.Handler.dispatchMessage(Handler.java:99)
02-09 02:01:13.181: E/AndroidRuntime(11530):    at android.os.Looper.loop(Looper.java:137)
02-09 02:01:13.181: E/AndroidRuntime(11530):    at android.app.ActivityThread.main(ActivityThread.java:4745)
02-09 02:01:13.181: E/AndroidRuntime(11530):    at java.lang.reflect.Method.invokeNative(Native Method)
02-09 02:01:13.181: E/AndroidRuntime(11530):    at java.lang.reflect.Method.invoke(Method.java:511)
02-09 02:01:13.181: E/AndroidRuntime(11530):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
02-09 02:01:13.181: E/AndroidRuntime(11530):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
02-09 02:01:13.181: E/AndroidRuntime(11530):    at dalvik.system.NativeStart.main(Native Method)
**02-09 02:01:13.181: E/AndroidRuntime(11530): Caused by: java.lang.NullPointerException
02-09 02:01:13.181: E/AndroidRuntime(11530):    at com.google.billing.Base64.decode(Base64.java:434)**
02-09 02:01:13.181: E/AndroidRuntime(11530):    at com.google.billing.Security.generatePublicKey(Security.java:87)
02-09 02:01:13.181: E/AndroidRuntime(11530):    at com.google.billing.Security.verifyPurchase(Security.java:66)
02-09 02:01:13.181: E/AndroidRuntime(11530):    at com.google.billing.IabHelper.handleActivityResult(IabHelper.java:437)
02-09 02:01:13.181: E/AndroidRuntime(11530):    at com.webrich.base.ui.GoogleInAppPurchaseActivity.onActivityResult(GoogleInAppPurchaseActivity.java:238)
02-09 02:01:13.181: E/AndroidRuntime(11530):    at android.app.Activity.dispatchActivityResult(Activity.java:5192)
02-09 02:01:13.181: E/AndroidRuntime(11530):    at android.app.ActivityThread.deliverResults(ActivityThread.java:3137)
02-09 02:01:13.181: E/AndroidRuntime(11530):    ... 11 more
02-09 02:02:20.610: E/JavaBinder(250): !!! FAILED BINDER TRANSACTION !!!
02-09 02:02:20.638: E/MountService(250): Listener dead
02-09 02:02:20.638: E/MountService(250): Listener dead
02-09 02:02:22.028: E/InputDispatcher(250): channel '41f313f0 com.android.vending/com.android.vending.AssetBrowserActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
02-09 02:03:59.884: E/PowerManagerService(250): Excessive delay setting brightness: 198ms, mask=2 

Its throwing Null Pointer Exceptions in onActivityResult() method on this line

if (!mHelper.handleActivityResult(requestCode, resultCode, data))

Method is like this

 @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.");
}
}

It works perfectly fine on static response but crashes on when I purchase from market.

Answer 1

I fixed this issue by simply making my IabHelper member variable(mHelper) static