com.digi.android.sample.xbeemanager.XBeeTabsActivity.java Source code

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Here is the source code for com.digi.android.sample.xbeemanager.XBeeTabsActivity.java

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/**
 * Copyright 2017, Digi International Inc.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

package com.digi.android.sample.xbeemanager;

import java.util.ArrayList;

import com.digi.android.sample.xbeemanager.fragments.AbstractXBeeDeviceFragment;
import com.digi.android.sample.xbeemanager.fragments.XBeeDeviceDiscoveryFragment;
import com.digi.android.sample.xbeemanager.fragments.XBeeDeviceInfoFragment;
import com.digi.android.sample.xbeemanager.fragments.XBeeReceivedPacketsFragment;
import com.digi.android.sample.xbeemanager.managers.XBeeManager;

import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.ActionBar.TabListener;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;

public class XBeeTabsActivity extends FragmentActivity {

    // Variables.
    private ViewPager viewPager;
    private XBeeManager xbeeManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.xbee_tabs_activity);

        // Retrieve the XBee Manager.
        xbeeManager = XBeeManagerApplication.getInstance().getXBeeManager();

        // Setup view pager.
        setupViewPager();

        // Configure Action Bar.
        configureTabs();
    }

    @Override
    protected void onStop() {
        super.onStop();
        // Disconnect the device.
        xbeeManager.closeConnection();
    }

    /**
     * Configures the view pager that will be used to display the different
     * activity fragments.
     */
    private void setupViewPager() {
        viewPager = (ViewPager) findViewById(R.id.pager);
        viewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
            /*
             * (non-Javadoc)
             * @see android.support.v4.view.ViewPager.SimpleOnPageChangeListener#onPageSelected(int)
             */
            public void onPageSelected(int position) {
                // When swiping between pages, select the corresponding tab.
                ActionBar actionBar = getActionBar();
                if (actionBar != null)
                    actionBar.setSelectedNavigationItem(position);
            }
        });
        viewPager.setOffscreenPageLimit(2);
        XBeeDevicePagerAdapter xbeePagerAdapter = new XBeeDevicePagerAdapter(getSupportFragmentManager());
        viewPager.setAdapter(xbeePagerAdapter);
    }

    /**
     * Configures the activity tabs of the action bar.
     */
    private void configureTabs() {
        ActionBar actionBar = getActionBar();
        if (actionBar == null)
            return;

        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
        XBeeDeviceTabListener xbeeDeviceTabListener = new XBeeDeviceTabListener();

        Tab infoTab = actionBar.newTab();
        infoTab.setText(getResources().getString(R.string.device_info_fragment_title));
        infoTab.setTabListener(xbeeDeviceTabListener);

        Tab discoverTab;
        discoverTab = actionBar.newTab();
        discoverTab.setText(getResources().getString(R.string.device_discovery_fragment_title));
        discoverTab.setTabListener(xbeeDeviceTabListener);

        Tab framesTab = actionBar.newTab();
        framesTab.setText(getResources().getString(R.string.frames_fragment_title));
        framesTab.setTabListener(xbeeDeviceTabListener);

        actionBar.addTab(infoTab);
        actionBar.addTab(discoverTab);
        actionBar.addTab(framesTab);
    }

    /**
     * Helper class used to handle the events of the different tab items.
     */
    private class XBeeDeviceTabListener implements TabListener {

        @Override
        public void onTabReselected(Tab tab, FragmentTransaction ft) {
            // Do nothing.
        }

        @Override
        public void onTabSelected(Tab tab, FragmentTransaction ft) {
            // When the tab is selected, switch to the corresponding page in the ViewPager.
            viewPager.setCurrentItem(tab.getPosition());
        }

        @Override
        public void onTabUnselected(Tab tab, FragmentTransaction ft) {
            // Do nothing.
        }
    }

    // Since this is an object collection, use a FragmentStatePagerAdapter,
    // and NOT a FragmentPagerAdapter.
    private class XBeeDevicePagerAdapter extends FragmentPagerAdapter {

        // Variables.
        private AbstractXBeeDeviceFragment infoFragment;
        private AbstractXBeeDeviceFragment discoverFragment;
        private AbstractXBeeDeviceFragment framesFragment;

        private ArrayList<AbstractXBeeDeviceFragment> fragments;

        public XBeeDevicePagerAdapter(FragmentManager fm) {
            super(fm);
            fragments = new ArrayList<AbstractXBeeDeviceFragment>();
            // Create device information fragment.
            infoFragment = new XBeeDeviceInfoFragment();
            infoFragment.setXBeeManager(xbeeManager);
            ((XBeeDeviceInfoFragment) infoFragment).setXBeeTabsActivity(XBeeTabsActivity.this);
            fragments.add(infoFragment);
            // Create device discovery fragment.
            discoverFragment = new XBeeDeviceDiscoveryFragment();
            discoverFragment.setXBeeManager(xbeeManager);
            fragments.add(discoverFragment);
            // Create received frames fragment.
            framesFragment = new XBeeReceivedPacketsFragment();
            framesFragment.setXBeeManager(xbeeManager);
            fragments.add(framesFragment);
        }

        @Override
        public Fragment getItem(int i) {
            return fragments.get(i);
        }

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

        @Override
        public CharSequence getPageTitle(int position) {
            return fragments.get(position).getFragmentName();
        }
    }
}