Android应用内结算购买活动导致应用崩溃

Question

Android in-app billing purchase activity is crashing the app.

i have a in app billing activity that buys subscription for removing ads for 1 month.

But when i am clicking remove ads button that calls billing activity, the app is crashing.

Here is my logcat output:

12-18 02:07:51.872: E/chromium(694): [ERROR:browser_gpu_channel_host_factory.cc(258)] Failed to init browser shader disk cache.
12-18 02:07:51.883: E/libEGL(694): validate_display:255 error 3008 (EGL_BAD_DISPLAY)
12-18 02:07:51.888: W/cr.media(694): Requires BLUETOOTH permission
12-18 02:07:51.907: W/art(694): Attempt to remove non-JNI local reference, dumping thread
12-18 02:07:51.914: W/AwContents(694): onDetachedFromWindow called when already detached. Ignoring
12-18 02:07:52.278: W/VideoCapabilities(694): Unrecognized profile 2130706433 for video/avc
12-18 02:07:52.310: I/VideoCapabilities(694): Unsupported profile 4 for video/mp4v-es
12-18 02:07:52.316: I/OMXClient(694): Using client-side OMX mux.
12-18 02:07:52.396: I/Ads(694): Starting ad request.

12-18 02:07:52.401: I/Ads(694): Please set theme of AdActivity to @android:style/Theme.Translucent to enable transparent background interstitial ad.
12-18 02:07:52.408: I/Ads(694): Starting ad request.

12-18 02:07:52.411: I/Ads(694): Please set theme of AdActivity to @android:style/Theme.Translucent to enable transparent background interstitial ad.
12-18 02:07:52.420: D/OpenGLRenderer(694): Use EGL_SWAP_BEHAVIOR_PRESERVED: true
12-18 02:07:52.439: D/billing(694): In app billing is set up
12-18 02:07:52.542: I/OpenGLRenderer(694): Initialized EGL, version 1.4
12-18 02:07:54.634: D/AndroidRuntime(694): Shutting down VM
12-18 02:07:54.636: E/AndroidRuntime(694): FATAL EXCEPTION: main
12-18 02:07:54.636: E/AndroidRuntime(694): Process: com.ifreedomapp.v3, PID: 694
12-18 02:07:54.636: E/AndroidRuntime(694): java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.Activity.startIntentSenderForResult(android.content.IntentSender, int, android.content.Intent, int, int, int)' on a null object reference
12-18 02:07:54.636: E/AndroidRuntime(694):  at com.ifreedom.util.IabHelper.launchPurchaseFlow(IabHelper.java:431)
12-18 02:07:54.636: E/AndroidRuntime(694):  at com.ifreedom.util.IabHelper.launchPurchaseFlow(IabHelper.java:347)
12-18 02:07:54.636: E/AndroidRuntime(694):  at com.ifreedom.StatusActivity$4.onClick(StatusActivity.java:379)
12-18 02:07:54.636: E/AndroidRuntime(694):  at android.view.View.performClick(View.java:5204)
12-18 02:07:54.636: E/AndroidRuntime(694):  at android.view.View$PerformClick.run(View.java:21153)
12-18 02:07:54.636: E/AndroidRuntime(694):  at android.os.Handler.handleCallback(Handler.java:739)
12-18 02:07:54.636: E/AndroidRuntime(694):  at android.os.Handler.dispatchMessage(Handler.java:95)
12-18 02:07:54.636: E/AndroidRuntime(694):  at android.os.Looper.loop(Looper.java:148)
12-18 02:07:54.636: E/AndroidRuntime(694):  at android.app.ActivityThread.main(ActivityThread.java:5417)
12-18 02:07:54.636: E/AndroidRuntime(694):  at java.lang.reflect.Method.invoke(Native Method)
12-18 02:07:54.636: E/AndroidRuntime(694):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
12-18 02:07:54.636: E/AndroidRuntime(694):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
12-18 02:07:57.191: I/GAV3(694): Thread[GAThread,5,main]: No campaign data found.

Here is my subscribe button activity:

    bsubscribe.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View v) {
        if (billing_error == "") {
            if (!isSubscribed)
                mHelper.launchPurchaseFlow(getParent(), SKU_SUBSCRIPTION, 9999, mPurchaseFinishedListener,"");
            else
                Toast.makeText(mContext, getResources().getString(R.string.already_subs), Toast.LENGTH_SHORT).show();
        } else
            Toast.makeText(mContext, "There's some error in billing : " + billing_error, Toast.LENGTH_LONG).show();
    }
});

}

And this is the setbilling function :

private void setInAppBilling() {
mHelper = new IabHelper(mContext, bill_key);
mHelper.startSetup(new IabHelper.OnIabSetupFinishedListener() {
    public void onIabSetupFinished(IabResult result) {
        if (mHelper == null)
            return;

        if (!result.isSuccess()) {
            Log.d("billing", "probelem in setting billing" + result);
            billing_error = "" + result;
        }
        if (result.isSuccess()) {
            Log.d("billing", "In app billing is set up");
            mHelper.queryInventoryAsync(new IabHelper.QueryInventoryFinishedListener() {

                @Override
                public void onQueryInventoryFinished(IabResult result, Inventory inv) {
                    if (inv.getPurchase(SKU_SUBSCRIPTION) == null) {
                        edit.putBoolean("subscription", false);
                        edit.commit();
                    } else {
                        edit.putBoolean("subscription", true);
                        edit.commit();
                        bsubscribe.setVisibility(View.GONE);
                    }
                }
            });
        }
    }
});
 }

  IabHelper.OnIabPurchaseFinishedListener mPurchaseFinishedListener = new         IabHelper.OnIabPurchaseFinishedListener() {
public void onIabPurchaseFinished(IabResult result, Purchase info) {
    if (result.isFailure()) {
        Toast.makeText(mContext, getResources().getString(R.string.error_subs), Toast.LENGTH_SHORT).show();
        return;
    }

    if (info.getSku().equals(SKU_SUBSCRIPTION)) {
        Toast.makeText(mContext, getResources().getString(R.string.success_subs), Toast.LENGTH_SHORT).show();
        edit.putBoolean("subscription", true);
        edit.commit();
    }
}
   };

Set billing is called from OnCreate of the activity.

The app is crashing when i click remove ads button (bsubscribe)

Answer 1

Hard to say exactly from the code provided but it looks like the call to getParent() is returning null in your onClick method. Then at line 431 in IabHelper.java you are calling startIntentSenderForResult on a null object.