java - 适用于 Android 的 Google 跟踪代码管理器 NullPointerException

Question

我正在尝试通过 Android 版 Google 跟踪代码管理器设置 Universal Analytics 代码。我有一个空白 Activity (布局中没有任何内容)，如下所示:

@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_verification);

    // Start GTM code

    try
    {
        TagManager tagManager = TagManager.getInstance(this);
        tagManager.setVerboseLoggingEnabled(true);
        PendingResult<ContainerHolder> pending = tagManager.loadContainerPreferNonDefault("GTM-XXXXXX", R.raw.default_gtm_container);
        pending.setResultCallback(new ResultCallback<ContainerHolder>()
        {
            @Override
            public void onResult(ContainerHolder containerHolder)
            {
                ContainerHolderSingleton.setContainerHolder(containerHolder);
                if (!containerHolder.getStatus().isSuccess())
                {
                    Log.e("GoogleTagManager", "failure loading container");
                    return;
                }
                ContainerHolderSingleton.setContainerHolder(containerHolder);
                containerHolder.setContainerAvailableListener(new ContainerHolder.ContainerAvailableListener()
                {

                    @Override
                    public void onContainerAvailable(ContainerHolder containerHolder, String containerVersion)
                    {
                        containerHolder.getContainer();
                    }
                });
            }
        }, 2, TimeUnit.SECONDS);
    } catch (Exception e)
    {
        e.printStackTrace();
    }

    // End GTM code
}

@Override
public void onStart()
{
    super.onStart();
    DataLayer dataLayer = TagManager.getInstance(this).getDataLayer();
    dataLayer.pushEvent("openScreen", DataLayer.mapOf("screenName", "Verification"));
}

我想做的就是在此 Activity 开始时触发 Universal Analytics 代码。从日志输出中可以看到:

04-23 06:49:56.745: D/dalvikvm(4334): Not late-enabling CheckJNI (already on)
04-23 06:49:56.855: V/GoogleTagManager(4334): Atttempting to load container from resource ID 2131034112
04-23 06:49:56.855: W/GoogleTagManager(4334): Resource is a UTF-8 encoded string but doesn't contain a JSON container
04-23 06:49:56.865: V/GoogleTagManager(4334): Deleted 0 expired items
04-23 06:49:56.875: V/GoogleTagManager(4334): Start loading resource from disk ...
04-23 06:49:56.875: W/dalvikvm(4334): threadid=13: thread exiting with uncaught exception (group=0xb2d4fb20)
04-23 06:49:56.885: W/GoogleTagManager(4334): GooglePlayServicesNotAvailableException getting Advertising Id Info
04-23 06:49:56.885: E/AndroidRuntime(4334): FATAL EXCEPTION: pool-2-thread-1
04-23 06:49:56.885: E/AndroidRuntime(4334): Process: com.outing.planner, PID: 4334
04-23 06:49:56.885: E/AndroidRuntime(4334): java.lang.NullPointerException
04-23 06:49:56.885: E/AndroidRuntime(4334):     at com.google.android.gms.tagmanager.o$b.a(Unknown Source)
04-23 06:49:56.885: E/AndroidRuntime(4334):     at com.google.android.gms.tagmanager.o$b.i(Unknown Source)
04-23 06:49:56.885: E/AndroidRuntime(4334):     at com.google.android.gms.tagmanager.cq.jC(Unknown Source)
04-23 06:49:56.885: E/AndroidRuntime(4334):     at com.google.android.gms.tagmanager.cq$1.run(Unknown Source)
04-23 06:49:56.885: E/AndroidRuntime(4334):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
04-23 06:49:56.885: E/AndroidRuntime(4334):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
04-23 06:49:56.885: E/AndroidRuntime(4334):     at java.lang.Thread.run(Thread.java:841)
04-23 06:49:56.915: D/dalvikvm(4334): GC_FOR_ALLOC freed 239K, 9% free 2999K/3292K, paused 17ms, total 17ms
04-23 06:49:57.225: D/(4334): HostConnection::get() New Host Connection established 0xb8c8e590, tid 4334
04-23 06:49:57.245: W/EGL_emulation(4334): eglSurfaceAttrib not implemented
04-23 06:49:57.245: D/OpenGLRenderer(4334): Enabling debug mode 0
04-23 06:50:01.945: V/GoogleTagManager(4334): connecting to Analytics service
04-23 06:50:01.945: V/GoogleTagManager(4334): connect: bindService returned false for Intent { act=com.google.android.gms.analytics.service.START cmp=com.google.android.gms/.analytics.service.AnalyticsService (has extras) }
04-23 06:50:01.945: W/GoogleTagManager(4334): Service unavailable (code=1), will retry.
04-23 06:50:01.945: V/GoogleTagManager(4334): Loaded clientId
04-23 06:50:01.945: I/GoogleTagManager(4334): No campaign data found.
04-23 06:50:01.945: V/GoogleTagManager(4334): Initialized GA Thread
04-23 06:50:01.945: W/GoogleTagManager(4334): GooglePlayServicesNotAvailableException getting Ad Id Info
04-23 06:50:01.945: V/GoogleTagManager(4334): putHit called
04-23 06:50:06.965: V/GoogleTagManager(4334): connecting to Analytics service
04-23 06:50:06.965: V/GoogleTagManager(4334): connect: bindService returned false for Intent { act=com.google.android.gms.analytics.service.START cmp=com.google.android.gms/.analytics.service.AnalyticsService (has extras) }
04-23 06:50:06.965: W/GoogleTagManager(4334): Service unavailable (code=1), using local store.
04-23 06:50:06.965: V/GoogleTagManager(4334): falling back to local store
04-23 06:50:06.965: V/GoogleTagManager(4334): Sending hit to store  PATH: https:  PARAMS: v=1,  ul=en-us,  t=appview,  ht=1398250196938,  sr=480x800,  an=OutingPlannerAndroid,  tid=UA-XXXXXXXX-Y,  aid=com.outing.planner,  cid=c5f3e490-a578-49d6-b0e7-eaf3bce8dfe6,  av=1.0,  _u=.4nL,  cd=Verification,  
04-23 06:50:06.965: V/GoogleTagManager(4334): PowerSaveMode initiated.
04-23 06:50:06.975: V/GoogleTagManager(4334): PowerSaveMode terminated.
04-23 06:50:06.975: V/GoogleTagManager(4334): Dispatch running...
04-23 06:50:07.405: D/dalvikvm(4334): GC_FOR_ALLOC freed 336K, 11% free 3177K/3568K, paused 6ms, total 6ms
04-23 06:50:08.215: V/GoogleTagManager(4334): sent 1 of 1 hits
04-23 06:50:08.225: V/GoogleTagManager(4334): PowerSaveMode initiated.

尽管抛出了 NullPointerException，但 Google Analytics(分析)命中实际上已发送，并且我在实时报告中看到了该命中。 NullPointerException 导致我的应用程序崩溃，即使在应用程序崩溃后，Google Analytics(分析)命中也会发送。

为什么会抛出NullPointerException？它似乎是由 Google 跟踪代码管理器类抛出的，但我不知道我做错了什么。我遵循 CuteAnimalV4 示例项目直至最后一个字母。

请注意，我隐藏了 Google 跟踪代码管理器容器 ID 和 Google Analytics(分析)帐户 ID。这些是现实生活中有效的值(value)观。

Answer 1

根据此线程https://productforums.google.com/forum/#!topic/tag-manager/87Kb_TZv79w

该问题将在下一个 Google Play 服务版本中修复。现在，您可以添加未捕获的异常处理程序作为解决方法。