Java tutorial
/* * Copyright 2011 Artiom Chilaru (http://flexlabs.org) * * 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 org.flexlabs.widgets.dualbattery.widgetsettings; import android.app.AlertDialog; import android.appwidget.AppWidgetManager; import android.content.Intent; import android.content.res.Configuration; import android.os.Build; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentPagerAdapter; import android.support.v4.app.FragmentTransaction; import android.support.v4.view.ViewPager; import android.view.View; import android.widget.*; import com.actionbarsherlock.app.SherlockFragmentActivity; import com.actionbarsherlock.view.MenuItem; import com.viewpagerindicator.PageIndicator; import com.viewpagerindicator.TabPageIndicator; import org.flexlabs.widgets.dualbattery.BatteryWidgetUpdater; import org.flexlabs.widgets.dualbattery.R; import org.flexlabs.widgets.dualbattery.app.AboutFragment; import org.flexlabs.widgets.dualbattery.app.DonateFragment; import org.flexlabs.widgets.dualbattery.app.FeedbackFragment; import org.flexlabs.widgets.dualbattery.service.MonitorService; public class WidgetActivity extends SherlockFragmentActivity implements AdapterView.OnItemClickListener { public int appWidgetId; private ListView mList; private int mCurrentTab = -1; private Fragment[] fragments; private String[] titles; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); startService(new Intent(this, MonitorService.class)); Bundle extras = getIntent().getExtras(); appWidgetId = extras.getInt(AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID); fragments = new Fragment[5]; fragments[0] = new BatteryInfoFragment(); fragments[1] = new PropertiesFragment(); fragments[2] = new FeedbackFragment(); fragments[3] = new DonateFragment(); fragments[4] = new AboutFragment(); titles = new String[5]; titles[0] = getString(R.string.propHeader_BatteryInfo); titles[1] = getString(R.string.propHeader_Properties); titles[2] = getString(R.string.propHeader_Feedback); titles[3] = getString(R.string.propHeader_Donate); titles[4] = getString(R.string.propHeader_About); int screenLayout = getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK; if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB && screenLayout > Configuration.SCREENLAYOUT_SIZE_LARGE) { setContentView(R.layout.preference_list_large); ArrayAdapter adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_activated_1, titles); mList = (ListView) findViewById(android.R.id.list); mList.setChoiceMode(AbsListView.CHOICE_MODE_SINGLE); mList.setOnItemClickListener(this); mList.setAdapter(adapter); mList.setItemChecked(0, true); mList.performClick(); getSupportFragmentManager().beginTransaction().replace(R.id.prefs, fragments[0]).commit(); } else { setContentView(R.layout.widgetsettings); PagerTabAdapter mPagerAdapter = new PagerTabAdapter(getSupportFragmentManager()); ViewPager mPager = (ViewPager) findViewById(R.id.pager); mPager.setAdapter(mPagerAdapter); PageIndicator mIndicator = (TabPageIndicator) findViewById(R.id.indicator); mIndicator.setViewPager(mPager); } if (WidgetSettingsContainer.getUpgradeSwappedSingle(this, appWidgetId)) { new AlertDialog.Builder(this).setTitle(R.string.app_name).setMessage(R.string.alert_just_swapped) .setPositiveButton("OK", null).show(); } } private class PagerTabAdapter extends FragmentPagerAdapter { public PagerTabAdapter(FragmentManager fm) { super(fm); } @Override public Fragment getItem(int i) { return fragments[i]; } @Override public int getCount() { return fragments.length; } @Override public CharSequence getPageTitle(int position) { return titles[position]; } } @Override public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) { if (mCurrentTab == position) return; mCurrentTab = position; FragmentTransaction transaction = getSupportFragmentManager().beginTransaction(); transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE); transaction.replace(R.id.prefs, fragments[position]); transaction.commit(); mList.setItemChecked(position, true); } @Override protected void onPause() { super.onPause(); BatteryWidgetUpdater.updateWidget(this, appWidgetId); } @Override protected void onStop() { super.onStop(); finish(); } @Override public boolean onOptionsItemSelected(MenuItem item) { return ((BatteryInfoFragment) fragments[0]).onMenuItemSelected(item) || super.onOptionsItemSelected(item); } }