CODEWITHSUNDEEP
javaandroideclipsegoogle-analytics-firebase
ZgrKARALAR
ZgrKARALAR

Reputation: 489

Android - Google Analytics Crashed

I have one project on eclipse now i'm try to add this project Google Analystics but when i'm adding thats code my MainActivity applications crashes.

  Tracker t = ((AnalyticsSampleApp)this.getApplication()).getTracker(TrackerName.APP_TRACKER);
  t.setScreenName("HomePage");
  t.send(new HitBuilders.AppViewBuilder().build());

LogCat

07-10 00:59:35.352: E/AndroidRuntime(9968): FATAL EXCEPTION: main
07-10 00:59:35.352: E/AndroidRuntime(9968): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.interrail.railrehber/com.interrail.railrehber.MainActivity}: java.lang.ClassCastException: android.app.Application cannot be cast to com.interrail.railrehber.AnalyticsSampleApp
07-10 00:59:35.352: E/AndroidRuntime(9968):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
07-10 00:59:35.352: E/AndroidRuntime(9968):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
07-10 00:59:35.352: E/AndroidRuntime(9968):     at android.app.ActivityThread.access$600(ActivityThread.java:141)
07-10 00:59:35.352: E/AndroidRuntime(9968):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
07-10 00:59:35.352: E/AndroidRuntime(9968):     at android.os.Handler.dispatchMessage(Handler.java:99)
07-10 00:59:35.352: E/AndroidRuntime(9968):     at android.os.Looper.loop(Looper.java:137)
07-10 00:59:35.352: E/AndroidRuntime(9968):     at android.app.ActivityThread.main(ActivityThread.java:5041)
07-10 00:59:35.352: E/AndroidRuntime(9968):     at java.lang.reflect.Method.invokeNative(Native Method)
07-10 00:59:35.352: E/AndroidRuntime(9968):     at java.lang.reflect.Method.invoke(Method.java:511)
07-10 00:59:35.352: E/AndroidRuntime(9968):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
07-10 00:59:35.352: E/AndroidRuntime(9968):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
07-10 00:59:35.352: E/AndroidRuntime(9968):     at dalvik.system.NativeStart.main(Native Method)
07-10 00:59:35.352: E/AndroidRuntime(9968): Caused by: java.lang.ClassCastException: android.app.Application cannot be cast to com.interrail.railrehber.AnalyticsSampleApp
07-10 00:59:35.352: E/AndroidRuntime(9968):     at com.interrail.railrehber.MainActivity.onCreate(MainActivity.java:143)
07-10 00:59:35.352: E/AndroidRuntime(9968):     at android.app.Activity.performCreate(Activity.java:5207)
07-10 00:59:35.352: E/AndroidRuntime(9968):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
07-10 00:59:35.352: E/AndroidRuntime(9968):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
07-10 00:59:35.352: E/AndroidRuntime(9968):     ... 11 more

AnalyticsSampleApp page code is

package com.interrail.railrehber;

import android.app.Application;
import com.google.android.gms.analytics.GoogleAnalytics;
import com.google.android.gms.analytics.Tracker;

import java.util.HashMap;

public class AnalyticsSampleApp extends Application {

// The following line should be changed to include the correct property id.
private static final String PROPERTY_ID = "UA-56237196-12";

public static int GENERAL_TRACKER = 0;
public enum TrackerName {
    APP_TRACKER, // Tracker used only in this app.
    GLOBAL_TRACKER, // Tracker used by all the apps from a company. eg: roll-up tracking.
    ECOMMERCE_TRACKER, // Tracker used by all ecommerce transactions from a company.
}

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

public AnalyticsSampleApp() {
    super();
}

public synchronized Tracker getTracker(TrackerName trackerId) {
    if (!mTrackers.containsKey(trackerId)) {
        GoogleAnalytics analytics = GoogleAnalytics.getInstance(this);
        Tracker t = (trackerId == TrackerName.APP_TRACKER) ? analytics.newTracker(PROPERTY_ID): (trackerId == TrackerName.GLOBAL_TRACKER) ? analytics.newTracker(R.xml.global_tracker): analytics.newTracker(R.xml.ecommerce_tracker);
        mTrackers.put(trackerId, t);

    }
    return mTrackers.get(trackerId);
  }
}

I don't understand why it's crashing always.

Upvotes: 1

Views: 194

Answers (1)

Marcin Orlowski
Marcin Orlowski

Reputation: 75629

You should carefully read your stack trace:

Caused by: java.lang.ClassCastException: android.app.Application cannot be cast to com.interrail.railrehber.AnalyticsSampleApp

which in your case means that in this line:

Tracker t = ((AnalyticsSampleApp)this.getApplication()).getTracker(TrackerName.APP_TRACKER);

getApplication() returns Application object and not AnalyticsSampleApp's. Most likely this is caused by missing reference to AnalyticsSampleApp in your Manifest's <application> (you need android:name pointing at your class, see docs). In result default Application is used by your app instead of yours class and casting exception is just result of this as you cannot cast parent class to child class.

Upvotes: 1

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