Question

我用app app（IAB）编写了一个应用程序。除了一件事，一切似乎都很好。如果我发起购买，则会出现Google Play IAB购买并且我购买了一件商品，然后会出现“购买完成”窗口，然后消失。但是，我的主应用程序似乎没有再次启动动画，几秒钟后，应用程序崩溃。我的logcat输出表明它们是一个空指针异常（与我自己的编码有关 - 没有特定的Android）

        try
        {
            Bundle buyIntentBundle = mService.getBuyIntent(3, mActivity.getPackageName(), (String)args[1], "inapp", "bGoa+V7g/yqDXvKRqq+JTFn4uQZbPiQJo4pf9RzJ");

            if(buyIntentBundle.getInt("RESPONSE_CODE") == BILLING_RESPONSE_RESULT_OK)
            {
                PendingIntent pendingIntent = buyIntentBundle.getParcelable("BUY_INTENT");

                try
                {
                    mActivity.startIntentSenderForResult(pendingIntent.getIntentSender(),
                               1001, new Intent(), Integer.valueOf(0), Integer.valueOf(0),
                               Integer.valueOf(0));
                }
                catch (SendIntentException e)
                {
                    Log.v("MYINFO", "Error purchasing item.");
                    e.printStackTrace();
                }
            }
            else
            {
                Log.v("MYINFO", "Error purchasing item.");

                showResponse(buyIntentBundle.getInt("RESPONSE_CODE"));
            }
        }
        catch (RemoteException e1)
        {
            e1.printStackTrace();
        }

此代码位于我自己的AsyncTask采购类中，而mActivity是主要的Activity。代码

  mActivity.startIntentSenderForResult(...)

在主Activity中调用'OnActivityResult（...）'然后发生崩溃。

任何想法我可能做错了什么？

谢谢。

我的logcat输出它：

V/MediaPlayer[Native](12951): start
E/MediaPlayer[Native](12951): start called in state 0
V/MediaPlayer[Native](12951): message received msg=100, ext1=-38, ext2=0
E/MediaPlayer[Native](12951): error (-38, 0)
D/MediaPlayer[Native](12951): calling notify_player_state: 0
V/MediaPlayer[Native](12951): callback application
V/MediaPlayer[Native](12951): back from callback
D/MediaPlayer[JAVA](12951): broadcasting MEDIA_CHANGE_PLAYER_STATE(with context) : 0x0
E/MediaPlayer[Native](12951): invoke failed: wrong state 0
D/MediaPlayer[JAVA](12951): broadcasting MEDIA_CHANGE_PLAYER_STATE(with context) : state = 0
V/MediaPlayer[Native](12951): MediaPlayer::setVolume(0.750000, 0.750000)
E/MediaPlayer[JAVA](12951): Error (-38,0)
V/MediaPlayerService(  301): [669] setVolume(0.750000, 0.750000)
V/AudioSink(  301): setVolume(0.750000, 0.750000)
W/dalvikvm(12951): threadid=33: thread exiting with uncaught exception (group=0x41b5ee48)
E/AndroidRuntime(12951): FATAL EXCEPTION: GLThread 22274
E/AndroidRuntime(12951): Process: com.mystuff.grame, PID: 12951
E/AndroidRuntime(12951): java.lang.NullPointerException
E/AndroidRuntime(12951):    at com.mystuff.grame.core.SpriteBatch.add(SpriteBatch.java:50)
E/AndroidRuntime(12951):    at com.mystuff.grame.core.Level.draw(Level.java:360)
E/AndroidRuntime(12951):    at com.mystuff.grame.core.Grame.drawGame(Grame.java:245)
E/AndroidRuntime(12951):    at com.mystuff.grame.core.Grame.onDrawFrame(Grame.java:178)
E/AndroidRuntime(12951):    at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1523)
E/AndroidRuntime(12951):    at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1240)
W/ActivityManager(  972):   Force finishing activity com.mystuff.grame/.MainActivity
D/ActivityManager(  972): setFocusedStack: mFocusedStack=ActivityStack{439390b8 stackId=1, 21 tasks}
V/ActivityManager(  972): Moving to PAUSING: ActivityRecord{43d96740 u0 com.mystuff.grame/.MainActivity t421 f}
V/MediaPlayer[Native](12951): stop
E/MediaPlayer[Native](12951): stop called in state 0
V/MediaPlayer[Native](12951): message received msg=100, ext1=-38, ext2=0
E/MediaPlayer[Native](12951): error (-38, 0)
D/MediaPlayer[Native](12951): calling notify_player_state: 0
V/MediaPlayer[Native](12951): callback application
V/MediaPlayer[Native](12951): back from callback
V/ActivityManager(  972): Moving to PAUSED: ActivityRecord{43d96740 u0 com.mystuff.grame/.MainActivity t421 f} (pause complete)
V/ActivityManager(  972): Moving to STOPPING: ActivityRecord{43d96740 u0 com.mystuff.grame/.MainActivity t421 f} (finish requested)
I/ActivityManager(  972): resumeTopActivitiesLocked(): target Stack:ActivityStack{439390b8 stackId=1, 21 tasks}
D/ActivityManager(  972): resumeTopActivityLocked: Launching home next
V/ActivityManager(  972): moveHomeStack:

Answer 1

它必须与应用内购买有关，因为直到应用内购买完成才会发生...似乎应用内购买流程导致我的某些变量变为空。

你可能是对的。打开IAP对话框时，我认为触发了onPause。如果onPause被触发，则意味着许多变量被设置为null并像MediaPlayer一样关闭。

另外，当IAP对话框出现时，MediaPlayer（我认为是原因）被设置为强制暂停。您可以尝试做的是在初始化购买流程时（或按下按钮触发它时）暂停MediaPLayer并在完成后重新初始化

应用内购买成功后的奇怪空指针异常（Android）

1 个答案: