App.java

package com.targroup.coolapkconsole;

import android.app.Activity;
import android.app.Application;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;

import com.google.android.gms.analytics.GoogleAnalytics;
import com.google.android.gms.analytics.HitBuilders;
import com.google.android.gms.analytics.Tracker;

/**
 * Created by Administrator on 2017/1/30.
 */

public class App extends Application {
    private static SharedPreferences prefs;
    public static SharedPreferences getPrefs () {
        return prefs;
    }
    @Override
    public void onCreate() {
        super.onCreate();
        prefs = PreferenceManager.getDefaultSharedPreferences(this);
        registerActivityLifecycleCallbacks(new ActivityLifecycleCallbacks() {
            @Override
            public void onActivityCreated(Activity activity, Bundle savedInstanceState) {
                Tracker tracker = getDefaultTracker();
                tracker.setScreenName("Image~" + activity.getLocalClassName());
                tracker.send(new HitBuilders.ScreenViewBuilder().build());
            }

            @Override
            public void onActivityStarted(Activity activity) {

            }

            @Override
            public void onActivityResumed(Activity activity) {

            }

            @Override
            public void onActivityPaused(Activity activity) {

            }

            @Override
            public void onActivityStopped(Activity activity) {

            }

            @Override
            public void onActivitySaveInstanceState(Activity activity, Bundle outState) {

            }

            @Override
            public void onActivityDestroyed(Activity activity) {

            }
        });
    }
    private Tracker mTracker;

    /**
     * Gets the default {@link Tracker} for this {@link Application}.
     * @return tracker
     */
    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;
    }
}