Java tutorial
/* * Copyright (c) 2014 Albert C. Braun * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.albertcbraun.wifidlitedemoapp; import android.app.ActionBar; import android.app.Activity; import android.app.FragmentManager; import android.app.FragmentTransaction; import android.os.Bundle; import android.support.v4.widget.DrawerLayout; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import com.albertcbraun.wifidlite.WifiDLite; import com.albertcbraun.wifidlite.impl.DefaultConfiguration; import com.albertcbraun.wifidlitedemoapp.fragments.Misc; import com.albertcbraun.wifidlitedemoapp.fragments.NavigationDrawerFragment; import com.albertcbraun.wifidlitedemoapp.fragments.PeerListAcquisition; import com.albertcbraun.wifidlitedemoapp.fragments.PeerListSubscription; public class MainActivity extends Activity implements NavigationDrawerFragment.NavigationDrawerCallbacks { private static final String TAG = MainActivity.class.getCanonicalName(); private WifiDLite wifiDLite = null; /** * Fragment managing the behaviors, interactions and presentation of the navigation drawer. */ private NavigationDrawerFragment mNavigationDrawerFragment; /** * Used to store the last screen title. For use in {@link #restoreActionBar()}. */ private CharSequence mTitle; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mNavigationDrawerFragment = (NavigationDrawerFragment) getFragmentManager() .findFragmentById(R.id.navigation_drawer); mTitle = getTitle(); // Set up the drawer. mNavigationDrawerFragment.setUp(R.id.navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout)); if (wifiDLite == null) { wifiDLite = WifiDLite.getInstance(); wifiDLite.initialize(getApplicationContext(), new DefaultConfiguration()); } } @Override protected void onDestroy() { super.onDestroy(); if (wifiDLite != null) { wifiDLite.dispose(); wifiDLite = null; } } @Override public void onNavigationDrawerItemSelected(int position) { Log.v(TAG, "onNavigationDrawerItemSelection. position:" + position); // update the main content by replacing fragments FragmentManager fragmentManager = getFragmentManager(); FragmentTransaction ft = fragmentManager.beginTransaction(); switch (position) { case 0: ft.replace(R.id.container, PeerListAcquisition.newInstance(position)); break; case 1: ft.replace(R.id.container, PeerListSubscription.newInstance(position)); break; case 2: ft.replace(R.id.container, Misc.newInstance(position)); break; } ft.commit(); } public void onSectionAttached(int number) { switch (number) { case 0: mTitle = getString(R.string.title_section0); break; case 1: mTitle = getString(R.string.title_section1); break; case 2: mTitle = getString(R.string.title_section2); break; } } void restoreActionBar() { ActionBar actionBar = getActionBar(); //noinspection deprecation actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD); actionBar.setDisplayShowTitleEnabled(true); actionBar.setTitle(mTitle); } @Override public boolean onCreateOptionsMenu(Menu menu) { if (!mNavigationDrawerFragment.isDrawerOpen()) { // Only show items in the action bar relevant to this screen // if the drawer is not showing. Otherwise, let the drawer // decide what to show in the action bar. getMenuInflater().inflate(R.menu.main, menu); restoreActionBar(); return true; } return super.onCreateOptionsMenu(menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); //noinspection SimplifiableIfStatement if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } public WifiDLite getWifiDLite() { return wifiDLite; } }