当我试图让我的活动追踪它显示错误 - 这方法是取消定义getactivity（）在谷歌分析V4

  //获取跟踪。    跟踪T =（（AnalyticsSampleApp）getActivity（）。getApplication（））            .getTracker（TrackerName.APP_TRACKER）; 

解决方案

如果您还没有这样做的话，创建一个类MyApplication的扩展应用为你的应用程序，并确保将其添加到您的清单如下（财产该事项在这里的是Android：姓名，我已经删除为清楚起见，其它XML属性）。

 ＆lt;应用    机器人：名字=mypackagename.MyApplication    ...＆GT; 

然后，在你所有MyApplication类，创建一个方法了解getTracker根据谷歌分析v4的文档https://developers.google.com/analytics/devguides/collection/android/v4/#tracking-methods

然后，使用

 跟踪器T =（（所有MyApplication）getApplication（））        .getTracker（TrackerName.APP_TRACKER）; 

When i am trying to get tracker in my activity it show error that -this method is undefine "getactivity()" in google analytic v4

// Get tracker.
    Tracker t = ((AnalyticsSampleApp) getActivity().getApplication())
            .getTracker(TrackerName.APP_TRACKER);

If you haven't done so already, create a class MyApplication extends Application for your app, and make sure you add it to your manifest as below (the property that matters here is android:name, I've removed the other xml properties for clarity).

<application
    android:name="mypackagename.MyApplication"
    ... >

Then, in your MyApplication class, create a method getTracker as per Google Analytics v4 documentation https://developers.google.com/analytics/devguides/collection/android/v4/#tracking-methods

Then, use

Tracker t = ((MyApplication) getApplication())
        .getTracker(TrackerName.APP_TRACKER);