com.eu.lad.JamCamViewer.JamCamViewerMainActivity.java Source code

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Here is the source code for com.eu.lad.JamCamViewer.JamCamViewerMainActivity.java

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/*
JamCamViewer
Copyright (C) 2013  Manish Lad
    
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
    
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
    
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

package com.eu.lad.JamCamViewer;

import android.app.ActionBar;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTransaction;

import java.util.LinkedList;

public class JamCamViewerMainActivity extends FragmentActivity {

    private LinkedList<Route> routeInventory;

    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        // Check that the activity is using the layout version with
        // the main_fragment_container FrameLayout
        if (findViewById(R.id.route_pager) != null) {

            // However, if we're being restored from a previous state,
            // then remove any saved support fragments to avoid overlapping
            // the Action bar.
            if (savedInstanceState != null) {
                return;
            }

            // Initialise the route inventory
            routeInventory = new LinkedList<Route>();
            seedBaseData();

            // Set-up the tabs in the Action Bar
            final ActionBar actionBar = getActionBar();
            // Specify that tabs should be displayed in the action bar.
            actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
            // Add a tab for each route in the routeInventory
            for (Route r : routeInventory) {
                ActionBar.Tab routeTab = actionBar.newTab();
                routeTab.setText(r.getRouteLabel());
                routeTab.setTabListener(this.getTabListener());
                actionBar.addTab(routeTab);
            }
        }

    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
    }

    public LinkedList<Route> getRouteInventory() {
        return routeInventory;
    }

    // Create a tab listener that is called when the user changes tabs.
    private ActionBar.TabListener getTabListener() {
        ActionBar.TabListener tabListener = new ActionBar.TabListener() {
            public void onTabSelected(ActionBar.Tab tab, android.app.FragmentTransaction ft) {
                // Create a new Fragment to contain the Route
                // that corresponds to the selected Action Bar tab
                RouteDisplayFragment routeDisplayFragment = new RouteDisplayFragment();

                // Pass the selected tab position as an argument to the Fragment
                // to indicate which Route should be displayed
                Bundle args = new Bundle();
                args.putInt(RouteDisplayFragment.ROUTE_ID, tab.getPosition());
                routeDisplayFragment.setArguments(args);

                // Replace the fragment in the 'route_pager' FrameLayout
                FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
                transaction.replace(R.id.route_pager, routeDisplayFragment);
                transaction.commit();
            }

            public void onTabUnselected(ActionBar.Tab tab, android.app.FragmentTransaction ft) {
                // hide the given tab
                // Do nothing for now
            }

            public void onTabReselected(ActionBar.Tab tab, android.app.FragmentTransaction ft) {
                // probably ignore this event
                // Do nothing for now
            }
        };

        return tabListener;
    }

    private void seedBaseData() {
        if (routeInventory.isEmpty()) {
            Route route = new Route("Sample Route 1");

            route.addRoutePoint(58299, "M40 J1");
            route.addRoutePoint(58316, "M40 J1A");
            route.addRoutePoint(58350, "M40 J1A-J2");
            route.addRoutePoint(58368, "M40 J1A-J2 curve");

            routeInventory.add(route);

            route = new Route("Sample Route 2");

            route.addRoutePoint(55020, "M25 J16 under M40");
            route.addRoutePoint(54975, "M25 J16-J15");
            route.addRoutePoint(54965, "M25 J16-J15");

            routeInventory.add(route);

            route = new Route("Sample Route 3");

            route.addRoutePoint(52280, "M4 J4B");
            route.addRoutePoint(52288, "M4 J4B");
            route.addRoutePoint(52296, "M4 J4B-J5");
            route.addRoutePoint(52306, "M4 J5");
            route.addRoutePoint(52350, "M4 J5-J6");

            routeInventory.add(route);

        }
    }

}