Java tutorial
/* * MainActivity.java * * Copyright (c) 2015 DeNA Co., Ltd. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ package com.dena.app.usage.watcher; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.media.AudioManager; import android.support.v4.app.Fragment; import android.support.v4.view.MenuItemCompat; import android.support.v4.widget.DrawerLayout; import android.support.v7.app.ActionBarActivity; import android.support.v7.app.ActionBar; import android.support.v7.widget.SwitchCompat; import android.view.KeyEvent; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.CompoundButton; import com.dena.app.usage.watcher.fragment.SettingFragment; import com.dena.app.usage.watcher.fragment.WatchFragment; import com.dena.app.usage.watcher.fragment.UnwatchFragment; import com.dena.app.usage.watcher.fragment.AboutFragment; import com.dena.app.usage.watcher.fragment.NavigationDrawerFragment; import com.dena.app.usage.watcher.receiver.WatchReceiver; import com.dena.app.usage.watcher.service.WatchService; import com.dena.app.usage.watcher.util.WatchUtil; public class MainActivity extends ActionBarActivity implements NavigationDrawerFragment.NavigationDrawerCallbacks, CompoundButton.OnCheckedChangeListener { private Handler mHandler; private NavigationDrawerFragment mNavigationDrawerFragment; private SwitchCompat mSwitchCompat; private CharSequence mTitle; private AudioManager mAudioManager; private static final String SUPPORT_FRAGMENT_TAG = Fragment.class.getName(); private static final String FRAGMENT_TAG = android.app.Fragment.class.getName(); protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mHandler = new Handler(); startSplash(); mNavigationDrawerFragment = (NavigationDrawerFragment) getSupportFragmentManager() .findFragmentById(R.id.navigation_drawer); mTitle = getTitle(); mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE); WatchReceiver watchReceiver = new WatchReceiver(); IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction(WatchService.WATCH_ACTION); registerReceiver(watchReceiver, intentFilter); watchReceiver.registerHandler(new Handler() { public void handleMessage(Message msg) { if (null == mSwitchCompat) { return; } Bundle bundle = msg.getData(); String message = bundle.getString(WatchService.WATCH_MESSAGE); if (message.equals(WatchService.WATCH_ACTION)) { mSwitchCompat.setChecked(true); } } }); } private void startSplash() { getSupportActionBar().hide(); findViewById(R.id.splash).setVisibility(View.VISIBLE); findViewById(R.id.drawer_layout).setVisibility(View.GONE); } private void endSplash() { getSupportActionBar().show(); findViewById(R.id.splash).setVisibility(View.GONE); findViewById(R.id.drawer_layout).setVisibility(View.VISIBLE); } protected void onStart() { super.onStart(); mHandler.postDelayed(new Runnable() { public void run() { endSplash(); mNavigationDrawerFragment.setUp(R.id.navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout)); } }, 1500L); } private void startFragment(android.app.Fragment fragment) { Fragment supportFragment = getSupportFragmentManager().findFragmentByTag(SUPPORT_FRAGMENT_TAG); if (null != supportFragment) { getSupportFragmentManager().beginTransaction().remove(supportFragment).commit(); } getFragmentManager().beginTransaction().replace(R.id.container, fragment, FRAGMENT_TAG).commit(); } private void startSupportFragment(Fragment supportFragment) { android.app.Fragment fragment = getFragmentManager().findFragmentByTag(FRAGMENT_TAG); if (null != fragment) { getFragmentManager().beginTransaction().remove(fragment).commit(); } getSupportFragmentManager().beginTransaction() .replace(R.id.container, supportFragment, SUPPORT_FRAGMENT_TAG).commit(); } public void onNavigationDrawerItemSelected(int position) { if (position == 0) { startSupportFragment(WatchFragment.newInstance(false)); } else if (position == 1) { startSupportFragment(WatchFragment.newInstance(true)); } else if (position == 2) { startSupportFragment(UnwatchFragment.newInstance()); } } public void onSectionAttached(int number) { switch (number) { case 1: mTitle = getString(R.string.title_section1); break; case 2: mTitle = getString(R.string.title_section2); break; case 3: mTitle = getString(R.string.title_section3); break; } } public void restoreActionBar() { ActionBar actionBar = getSupportActionBar(); actionBar.setDisplayShowTitleEnabled(true); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD); actionBar.setTitle(mTitle); } public boolean onCreateOptionsMenu(Menu menu) { if (!mNavigationDrawerFragment.isDrawerOpen()) { getMenuInflater().inflate(R.menu.main, menu); MenuItem item = menu.findItem(R.id.action_switch); mSwitchCompat = (SwitchCompat) MenuItemCompat.getActionView(item); mSwitchCompat.setOnCheckedChangeListener(this); boolean checked = WatchUtil.isRunningService(this, WatchService.class.getName()); mSwitchCompat.setChecked(checked); restoreActionBar(); return true; } return super.onCreateOptionsMenu(menu); } public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case R.id.action_settings: startFragment(SettingFragment.newInstance()); return true; case R.id.action_about: startSupportFragment(AboutFragment.newInstance()); return true; } return super.onOptionsItemSelected(item); } public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if (isChecked) { startService(new Intent(getApplicationContext(), WatchService.class)); } else { stopService(new Intent(getApplicationContext(), WatchService.class)); } } public boolean onKeyDown(int keyCode, KeyEvent evt) { switch (keyCode) { case KeyEvent.KEYCODE_VOLUME_UP: mAudioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_RAISE, AudioManager.FLAG_SHOW_UI); return true; case KeyEvent.KEYCODE_VOLUME_DOWN: mAudioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_LOWER, AudioManager.FLAG_SHOW_UI); return true; default: break; } return super.onKeyDown(keyCode, evt); } }