Google Analytic in Android App not working

Question

Its my First time trying to integrate "Google Analytic" to y Android App. I followed this Tutorial

https://developers.google.com/analytics/devguides/collection/android/v4/

But its not working. Whats the Problem. May be I haven't written the Complete Code. May Be I am missing something. I don't know the exact Procedure.

What I did is,

• 1st, Added Permission in My Manifest File as follows

  <uses-permission android:name="android.permission.INTERNET" />

  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

• 2nd, added dependency in project's gradle file

In Top Level

classpath com.google.gms:google-services:1.3.0-beta1

In Project Level

 apply plugin: 'com.google.gms.google-services'

 compile 'com.google.android.gms:play-services-analytics:7.3.0'

• 3rd, I Created and Downloaded a "Configuration File" as mentioned in the above Link, and placed that file in "app" folder in my Project Directory

• 4th, I created a class named "AnalyticsApplication" which extends "Application" with the following code

  public class AnalyticsApplication extends Application{
  
  private Tracker mTracker;
  
    synchronized public Tracker getDefaultTracker() {
  if (mTracker == null) {
      GoogleAnalytics analytics = GoogleAnalytics.getInstance(this);
      // To enable debug logging use: adb shell setprop log.tag.GAv4 DEBUG
      mTracker = analytics.newTracker(R.xml.global_tracker);
  }
  return mTracker;
  }
  }
  

5th, in onCreate method of any one Activity which I want to Track, I wrote the following Code

AnalyticsApplication application = (AnalyticsApplication) getApplication();
mTracker = application.getDefaultTracker();

Then, in onResume method of that Activity, I wrote the following Code

Log.i(LOG_TKT,"Setting screen name: " + "MainActivity Screen");
    mTracker.setScreenName("Image~" + "MainActivity Screen");
    mTracker.send(new HitBuilders.ScreenViewBuilder().build());
    mTracker.send(new HitBuilders.EventBuilder()
            .setCategory("Action")
            .setAction("Share")
            .build());

That's it. Please Help where I went wrong. OR What is the Correct Method of doing it ?