in-app-billing

Server-side verification of Google Play In-app billing version 3 purchase

where do I get the signature from ? Have a look at official docs, It says that inside your onActivityResult() method you can get following data as shown in example, @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if (requestCode == 1001) { int responseCode = data.getIntExtra(“RESPONSE_CODE”, 0); String purchaseData = data.getStringExtra(“INAPP_PURCHASE_DATA”); String … Read more

Is it possible to debug locally Google Play’s in-app billing in Android Studio?

EDIT: This is now superseded by the newly accepted answer. In essence, in-app billing payments can only be tested with a release-signed apk (the one we upload to Google Play Console). Here are some steps that got me attached to a signed apk with Android Studio: I’m on Windows. It helps having adb.exe in the … Read more

Android – protecting in app purchases with server side verification

My small contribution to reduce fraud in in-app purchases Signature verification on an external server, on your Android code : verifySignatureOnServer() private boolean verifySignatureOnServer(String data, String signature) { String retFromServer = “”; URL url; HttpsURLConnection urlConnection = null; try { String urlStr = “https://www.example.com/verify.php?data=” + URLEncoder.encode(data, “UTF-8”) + “&signature=” + URLEncoder.encode(signature, “UTF-8”); url = new … Read more

onIabPurchaseFinished never called.

Try adding this to the Activity that calls mHelper.launchPurchaseFlow(..): @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 … Read more