Question

编辑：我修正了错误。但我仍然无法在Google Analytics窗口上看到实时访问者。我检查了三次跟踪ID。这是正确的，代码中没有错误。但为什么我不能访问我的访客？最少1位访客应该是实时访客区。因为我在我的应用上。

我想在我的应用程序中使用google analytics v4。我向google doc添加了一个according课程。

GoogleAnal.java

public class GoogleAnal extends Application {
    public GoogleAnal() {
        super();
        }
    public enum TrackerName {
        APP_TRACKER, // Tracker used only in this app.
    }

    HashMap<TrackerName, Tracker> mTrackers = new HashMap<TrackerName, Tracker>();


    synchronized Tracker getTracker(TrackerName trackerId) {
        if (!mTrackers.containsKey(trackerId)) {
            GoogleAnalytics analytics = GoogleAnalytics.getInstance(this);
            if(trackerId == TrackerName.APP_TRACKER){
                Tracker t = analytics.newTracker(R.xml.app_tracker);
                mTrackers.put(trackerId, t);
            }         
        }
        return mTrackers.get(trackerId);
    }

}

MainActivity.java

protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
....
....
....
//Below line gives Error: 
//11-26 09:52:35.005: E/AndroidRuntime(2239): Caused by: java.lang.ClassCastException:    android.app.Application cannot be cast to com.xxx.helloworld.GoogleAnal

((GoogleAnal) getApplication()).getTracker(GoogleAnal.TrackerName.APP_TRACKER);

}

    @Override
    protected void onStart() {
        super.onStart();
        GoogleAnalytics.getInstance(this).reportActivityStart(this);
    }

    @Override
    protected void onStop() {
        super.onStop();
        GoogleAnalytics.getInstance(this).reportActivityStop(this);
    }

我做错了什么？我应该写什么而不是((GoogleAnal) getApplication()).getTracker(GoogleAnal.TrackerName.APP_TRACKER);

如果我的方式都错了，你能提出一些建议吗？

Answer 1

选项1：您是否在清单中添加了GoogleAnal？

<application
    android:name="com.xxx.helloworld.GoogleAnal"
    ...

选项2：这是我的应用程序中的getTracker方法：

synchronized Tracker getTracker(TrackerName trackerId) {

    if (!mTrackers.containsKey(trackerId)) {

        GoogleAnalytics analytics = GoogleAnalytics.getInstance(this);
        analytics.setLocalDispatchPeriod(15);
        analytics.getLogger().setLogLevel(Logger.LogLevel.VERBOSE);
        Tracker t = analytics.newTracker(PROPERTY_ID);
        t.setAppName(getResources().getString(R.string.app_name));
        t.enableAdvertisingIdCollection(true);
        t.enableAutoActivityTracking(true);
        t.enableExceptionReporting(true);
        mTrackers.put(trackerId, t);
    }
    return mTrackers.get(trackerId);
}

我的Android应用中的Google Analytics v4 Cast Error

1 个答案: