Activity

Activity implements DatePickerDialog.OnDateSetListener {

    int selectedIndex = 0;
    int previousSelectedIndex = 0;
    NavigationAdapter adapter;
    
onCreate() {


        ArrayList<String> itemList = new ArrayList<String>();
        itemList.add("Today");
        itemList.add("Yesterday");
        itemList.add("Specific day");

        ArrayList<String> titleList = new ArrayList<String>();
        titleList.add("Today");
        titleList.add("Yesterday");
        titleList.add("Specific day");

        adapter = new NavigationAdapter(this, titleList, itemList, this);
        getSupportActionBar().setListNavigationCallbacks(adapter, this);
        getSupportActionBar().setSelectedNavigationItem(selectedIndex);
        previousSelectedIndex = 0;
}


    @Override
    public boolean onNavigationItemSelected(int position, long id) {

        selectedIndex = position;
        if (position == 0 || position == 1) {
            previousSelectedIndex = position;
        }

        // Set the title for 'Specific day' item to be 'Today' or 'Yesterday'.
        if (previousSelectedIndex == 0) {
            adapter.setTitle("Today");
            adapter.notifyDataSetChanged();
        } else if (previousSelectedIndex == 1) {
            adapter.setTitle("Yesterday");
            adapter.notifyDataSetChanged();
        }

        if(position != 2) {
            // Do what you wanted to do for 'Today' & 'Yesterday'
            
        }

        return true;
    }

    public void onDateSet(DatePicker view, int year, int month, int day) {
        // Do something with the date chosen by the user

        if (view.isShown()) {
            Calendar calendar = Calendar.getInstance();
            int todayDate = calendar.get(Calendar.DAY_OF_MONTH);
            long yesterdayTime = calendar.getTimeInMillis() - ( 24 * 60 * 60 * 1000);
            calendar.setTime(new Date (yesterdayTime));
            int yesterdayDate = calendar.get(Calendar.DAY_OF_MONTH);
            if (previousSelectedIndex == 0) {
                if (todayDate == day) {
                    return;
                }
            } else if (previousSelectedIndex == 1) {
                if (yesterdayDate == day) {
                    return;
                }
            }

            calendar.set(year, month, day, 0, 0, 0);
            startTime = calendar.getTimeInMillis();
            SimpleDateFormat format = new SimpleDateFormat("EEE, MMM dd");
            if (todayDate == day) {
                adapter.setTitle("Today");
            } else if (yesterdayDate == day) {
                adapter.setTitle("Yesterday");
            } else {
                adapter.setTitle(format.format(new Date(startTime)));
            }
            getSupportActionBar().setSelectedNavigationItem(2);
            adapter.notifyDataSetChanged();
            // Do what you wanted to do rest.
        }
    }

}

NavigationAdapter

import android.app.AlertDialog;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.support.v4.app.FragmentManager;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.SpinnerAdapter;
import android.widget.TextView;

import com.for4wheeler.R;
import com.for4wheeler.database.LocationDBManager;
import com.for4wheeler.screens.MainActivity;
import com.for4wheeler.screens.TransportationListActivity;
import com.for4wheeler.util.FontProvider;

import java.util.Calendar;
import java.util.List;

/**
 * Created by maniselvaraj on 7/6/14.
 * Custom navigation list adapter.
 */
public class NavigationAdapter extends BaseAdapter implements SpinnerAdapter {

    private LayoutInflater mLayoutInflater;
    private List<String> mTitles;
    private List<String> mDropDownList;
    private <Activity> mAct;
    
    /** Check if user has clicked on specific day item **/
    public static boolean isSpecificDayClicked = false;

    public NavigationAdapter(Context context, List<String> titles,List<String> dropdown,
                             TransportationListActivity act) {
        mLayoutInflater = LayoutInflater.from(context);
        mAct = act;
        mTitles = titles;
        mDropDownList = dropdown;
    }

    /**
     * Sets the title for 'Specific day' option 
     **/
    public void setTitle(String title) {
        mTitles.set(2, title);
    }

    @Override
    public int getCount() {
        return mTitles.size();
    }

    @Override
    public Object getItem(int position) {
        return mTitles.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup p_parent) {
        Holder holder;
        if (convertView == null) {
            holder = new Holder();
            convertView = m_layoutInflater.inflate(R.layout.navigation_title, p_parent, false);
            holder.title = (TextView) convertView.findViewById(R.id.title);
            holder.title.setTypeface(FontProvider.getLightFont());
            convertView.setTag(holder);
        } else {
            holder = (Holder) convertView.getTag();
        }

        holder.title.setText(mTitles.get(position));
        
        // As soon as a drop down item is choosen, framework tries to go through all the titles list and get the correct
        // title. We use this point as the trigger to show the date picker dialog.
        if (isSpecificDayClicked ) {
            isSpecificDayClicked = false;
            showDatePickerDialog();
        }
        
        return convertView;
    }

    @Override
    public View getDropDownView(final int position, View convertView, ViewGroup p_parent) {
        Holder holder;
        if (convertView == null) {
            holder = new Holder();
            convertView = m_layoutInflater.inflate(R.layout.navigation_list_item, p_parent, false);
            holder.title = (TextView) convertView.findViewById(R.id.title);
            holder.title.setTypeface(FontProvider.getLightFont());
            convertView.setTag(holder);
        } else {
            holder = (Holder) convertView.getTag();
        }

        final int pos = position;
        // If user clicks on 'Specific day' mark the static bool to indicate user has pressed it.
        // onClick listener doesn't work as system doesn't dismiss the drop down item as we capture the onCLick.
        // Even in this case, we return false in onTouch, we dont consume the touch events further. 
        // Just to get the trigger that user has touched 'Specific day' we need this.
        if (position == 0 || position == 1 || position == 2) {
            holder.title.setOnTouchListener(new View.OnTouchListener() {
                @Override
                public boolean onTouch(View v, MotionEvent event) {
                    if (position == 0 || position == 1) {
                        isSpecificDayClicked = false;
                    } else {
                        isSpecificDayClicked = true;
                    }
                    return false;
                }
            });
        }
        holder.title.setText(mDropDownList.get(position));
        return convertView;
    }

    class Holder {
        TextView title;
    }

    public void showDatePickerDialog() {
        final Calendar c = Calendar.getInstance();
        int year = c.get(Calendar.YEAR);
        int month = c.get(Calendar.MONTH);
        int day = c.get(Calendar.DAY_OF_MONTH);

        DatePickerDialog dialog = new DatePickerDialog((Context)mAct, mAct, year, month, day);
        long startTime = LocationDBManager.getInstance().getStartDateFromTransports();
        dialog.getDatePicker().setMinDate(startTime);
        dialog.getDatePicker().setMaxDate(System.currentTimeMillis());
        dialog.show();
    }

}