Track events with Mixpanel in Android.For more information, check out my detailed guide here : http://droidmentor.com/track-events-mixpanel-android/

MixPanelHelper.java

import android.content.Context;
import android.util.Log;

import com.mixpanel.android.mpmetrics.MixpanelAPI;

import org.json.JSONException;
import org.json.JSONObject;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Iterator;

import droidmentor.checking.R;
import droidmentor.checking.Utils.MySharedPreferences;

/**
 * Created by Jaison 
 */

public class MixPanelHelper
{
    private MixpanelAPI mixpanel;
    private MySharedPreferences mySharedPreferences;

    public MixPanelHelper(Context context)
    {
        mySharedPreferences=new MySharedPreferences(context);
        String projectnumber=context.getString(R.string.google_project_number);
        String projectToken = context.getString(R.string.mixpanel_token);
        mixpanel = MixpanelAPI.getInstance(context, projectToken);
       // mixpanel.getPeople().initPushHandling(projectnumber);

        if(mySharedPreferences.get_mixpanel_people_registered())
        {
            mixpanel.identify(mySharedPreferences.getUserID());
            mixpanel.getPeople().identify(mySharedPreferences.getUserID());
        }
    }

    public void clearProfile()
    {
        mySharedPreferences.reset();
    }

    public void set_profile()
    {
        JSONObject profileProps = new JSONObject();

        try {
            mySharedPreferences.setUserID("12PCA103");
            mySharedPreferences.setUsername("Jaison");

            profileProps.put("$user_id",mySharedPreferences.getUserID());
            profileProps.put("$platform", "android");
            profileProps.put("$name",mySharedPreferences.getUserName());
            profileProps.put("$created",getdate(new Date()));

            if(!mySharedPreferences.get_mixpanel_people_registered())
            {
                mixpanel.getPeople().set(profileProps);
                mixpanel.identify(mySharedPreferences.getUserID());
                mixpanel.getPeople().identify(mySharedPreferences.getUserID());
                mySharedPreferences.set_mixpanel_people_registered(true);
            }

        } catch (JSONException e) {
            Log.e("MYAPP", "Unable to add properties to JSONObject", e);
        }
    }

    private String getdate(Date d)
    {
        DateFormat df2 = new SimpleDateFormat("MMM dd,yyyy hh:mm aaa");
        return df2.format(d);
    }

    private JSONObject get_basic_property()
    {
        JSONObject props = new JSONObject();

        try {
            props.put("$user_id",mySharedPreferences.getUserID());
            props.put("$name",mySharedPreferences.getUserName());
            props.put("$platform", "android");

        } catch (JSONException e) {
            Log.e("MYAPP", "Unable to add properties to JSONObject", e);
        }

        return props;
    }

    public void triggerEvent(String eventName)
    {
        JSONObject props;
        props=get_basic_property();

        mixpanel.track(eventName, props);

    }

    public void triggerEvent(String eventName,JSONObject proprety)
    {
        JSONObject props,merge;
        props=get_basic_property();
        mixpanel.track(eventName, mergeJSONObjects(props,proprety));
    }

    public static JSONObject mergeJSONObjects(JSONObject json1, JSONObject json2)
    {
        Iterator key=json2.keys();
        try {
            while (key.hasNext()) {
                String k = key.next().toString();
                json1.put(k,json2.get(k));
            }
        } catch (JSONException e) {
            throw new RuntimeException("JSON Exception" + e);
        }
        return json1;
    }
}

MixpanelSampleActivity.java

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;

import org.json.JSONObject;

import droidmentor.checking.R;

public class MixpanelActivity extends AppCompatActivity implements View.OnClickListener {

    Button btn_login,btn_logout,btn_event1,btn_event2;
    MixPanelHelper mixPanelHelper;
    String TAG="Mixpnel";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_mixpanel);
        mixPanelHelper=new MixPanelHelper(this);

        btn_login=(Button)findViewById(R.id.btn_login);
        btn_logout=(Button)findViewById(R.id.btn_logout);
        btn_event1=(Button)findViewById(R.id.btn_event1);
        btn_event2=(Button)findViewById(R.id.btn_event2);

        btn_login.setOnClickListener(this);
        btn_logout.setOnClickListener(this);
        btn_event1.setOnClickListener(this);
        btn_event2.setOnClickListener(this);
    }

    @Override
    public void onClick(View view)
    {
        switch (view.getId())
        {
            case R.id.btn_login:
                mixPanelHelper.set_profile();
                mixPanelHelper.triggerEvent("Login");
                Log.d(TAG, "onClick: Login");
                break;
            case R.id.btn_logout:
                mixPanelHelper.triggerEvent("Logout");
                mixPanelHelper.clearProfile();
                Log.d(TAG, "onClick: Logout");
                break;
            case R.id.btn_event1:
                mixPanelHelper.triggerEvent("Event1");
                Log.d(TAG, "onClick: Event1");
                break;
            case R.id.btn_event2:
                JSONObject props=new JSONObject();
                try {
                    props.put("$language","English");
                }
                catch(Exception e)
                {
                    e.printStackTrace();
                }
                mixPanelHelper.triggerEvent("Event2",props);
                Log.d(TAG, "onClick: Event2");
                break;
        }

    }
}

MySharedPreferences.java

import android.content.Context;
import android.content.SharedPreferences;

/**
 * Created by Jaison
 */

public class MySharedPreferences {
    private static final String APP_SHARED_PREFS = "CheckingPref";

    private static final String userName="userName";
    private static final String userID="userID";
    private static final String mixpanel_people_registered="mixpanel_people_registered";

    private SharedPreferences appSharedPrefs;
    private SharedPreferences.Editor prefsEditor;

    public MySharedPreferences(Context context)
    {
        this.appSharedPrefs = context.getSharedPreferences(APP_SHARED_PREFS, Context.MODE_PRIVATE);
        this.prefsEditor = appSharedPrefs.edit();
    }

    public void reset()
    {
        prefsEditor.clear();
        prefsEditor.commit();
    }

    //mixpanel registration

    public boolean get_mixpanel_people_registered() {
        return appSharedPrefs.getBoolean(mixpanel_people_registered, false);
    }

    public void set_mixpanel_people_registered(boolean i)
    {
        prefsEditor.putBoolean(mixpanel_people_registered, i);
        prefsEditor.commit();
    }

    public String getUserName() {
        return appSharedPrefs.getString(userName,"Guest");
    }

    public String getUserID() {
        return appSharedPrefs.getString(userID,"12PCA100");

    }

    public void setUsername(String UserName)
    {
        prefsEditor.putString(userName, UserName);
        prefsEditor.commit();
    }

    public void setUserID(String UserID)
    {
        prefsEditor.putString(userID, UserID);
        prefsEditor.commit();
    }


}