Java tutorial
/* * Copyright (C) 2012 OTA Update Center * * Licensed under the Apache License, Version 2.0 (the "License"); * You may only use this file in compliance with the license and provided you are not associated with or are in co-operation anyone by the name 'X Vanderpoel'. * 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.otaupdater; import java.util.ArrayList; import android.app.ActionBar; import android.app.ActionBar.Tab; import android.app.Activity; import android.app.AlertDialog; import android.app.Fragment; import android.app.FragmentTransaction; import android.content.Context; import android.content.DialogInterface; import android.content.Intent; import android.os.AsyncTask; import android.os.Bundle; import android.support.v13.app.FragmentPagerAdapter; import android.support.v4.app.FragmentActivity; import android.support.v4.view.ViewPager; import android.util.Log; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import com.google.android.gcm.GCMRegistrar; import com.otaupdater.utils.Config; import com.otaupdater.utils.Utils; public class TabDisplay extends FragmentActivity { public static final String ROM_NOTIF_ACTION = "com.otaupdater.action.ROM_NOTIF_ACTION"; public static final String KERNEL_NOTIF_ACTION = "com.otaupdater.action.KERNEL_NOTIF_ACTION"; private ViewPager mViewPager; private TabsAdapter mTabsAdapter; private Config cfg; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); final Context context = getApplicationContext(); cfg = Config.getInstance(context); if (!Utils.haveProKey(context)) { cfg.setKeyExpiry(0); } else if (!cfg.hasValidProKey()) { if (cfg.isProKeyTemporary()) { if (cfg.getKeyExpires() < System.currentTimeMillis()) { Utils.verifyProKey(context); } } else { Utils.verifyProKey(context); } } if (!Utils.isRomOtaEnabled() && !Utils.isKernelOtaEnabled()) { if (!cfg.getIgnoredUnsupportedWarn()) { AlertDialog.Builder alert = new AlertDialog.Builder(this); alert.setTitle(R.string.alert_unsupported_title); alert.setMessage(R.string.alert_unsupported_message); alert.setCancelable(false); alert.setNegativeButton(R.string.alert_exit, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); finish(); } }); alert.setPositiveButton(R.string.alert_ignore, new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { cfg.setIgnoredUnsupportedWarn(true); dialog.dismiss(); } }); alert.create().show(); } if (Utils.marketAvailable(this)) { GCMRegistrar.checkDevice(context); GCMRegistrar.checkManifest(context); final String regId = GCMRegistrar.getRegistrationId(context); if (regId.length() != 0) { GCMRegistrar.unregister(context); } } } else { if (Utils.marketAvailable(this)) { GCMRegistrar.checkDevice(context); GCMRegistrar.checkManifest(context); final String regId = GCMRegistrar.getRegistrationId(context); if (regId.length() != 0) { if (cfg.upToDate()) { Log.v(Config.LOG_TAG + "GCMRegister", "Already registered"); } else { Log.v(Config.LOG_TAG + "GCMRegister", "Already registered, out-of-date"); cfg.setValuesToCurrent(); new AsyncTask<Void, Void, Void>() { @Override protected Void doInBackground(Void... params) { Utils.updateGCMRegistration(context, regId); return null; } }.execute(); } } else { GCMRegistrar.register(context, Config.GCM_SENDER_ID); Log.v(Config.LOG_TAG + "GCMRegister", "GCM registered"); } } else { UpdateCheckReceiver.setAlarm(context); } } mViewPager = new ViewPager(this); mViewPager.setId(R.id.pager); setContentView(mViewPager); final ActionBar bar = getActionBar(); bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS); bar.setDisplayOptions(ActionBar.DISPLAY_SHOW_TITLE, ActionBar.DISPLAY_SHOW_TITLE); bar.setTitle(R.string.app_name); mTabsAdapter = new TabsAdapter(this, mViewPager); mTabsAdapter.addTab(bar.newTab().setText(R.string.main_about), AboutTab.class, null); mTabsAdapter.addTab(bar.newTab().setText(R.string.main_rom), ROMTab.class, null); mTabsAdapter.addTab(bar.newTab().setText(R.string.main_kernel), KernelTab.class, null); mTabsAdapter.addTab(bar.newTab().setText(R.string.main_walls), WallsTab.class, null); if (savedInstanceState != null) { bar.setSelectedNavigationItem(savedInstanceState.getInt("tab", 0)); } } @Override protected void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putInt("tab", getActionBar().getSelectedNavigationIndex()); } public static class TabsAdapter extends FragmentPagerAdapter implements ActionBar.TabListener, ViewPager.OnPageChangeListener { private Context ctx; private final ActionBar mActionBar; private final ViewPager mViewPager; private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>(); static final class TabInfo { private final Class<?> clss; private final Bundle args; TabInfo(Class<?> _class, Bundle _args) { clss = _class; args = _args; } } public TabsAdapter(Activity activity, ViewPager pager) { super(activity.getFragmentManager()); ctx = activity; mActionBar = activity.getActionBar(); mViewPager = pager; mViewPager.setAdapter(this); mViewPager.setOnPageChangeListener(this); } public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args) { TabInfo info = new TabInfo(clss, args); tab.setTag(info); tab.setTabListener(this); mTabs.add(info); mActionBar.addTab(tab); notifyDataSetChanged(); } @Override public int getCount() { return mTabs.size(); } @Override public Fragment getItem(int position) { TabInfo info = mTabs.get(position); return Fragment.instantiate(ctx, info.clss.getName(), info.args); } @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { } @Override public void onPageSelected(int position) { mActionBar.setSelectedNavigationItem(position); } @Override public void onPageScrollStateChanged(int state) { } @Override public void onTabSelected(Tab tab, FragmentTransaction ft) { Object tag = tab.getTag(); for (int i = 0; i < mTabs.size(); i++) { if (mTabs.get(i) == tag) { mViewPager.setCurrentItem(i); } } } @Override public void onTabUnselected(Tab tab, FragmentTransaction ft) { } @Override public void onTabReselected(Tab tab, FragmentTransaction ft) { } } @Override public boolean onCreateOptionsMenu(Menu menu) { MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.actionbar_menu, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { Intent i; switch (item.getItemId()) { case R.id.settings: i = new Intent(this, Settings.class); startActivity(i); return true; case R.id.downloads: i = new Intent(this, Downloads.class); startActivity(i); return true; case R.id.accounts: i = new Intent(this, AccountsScreen.class); startActivity(i); return true; default: return super.onOptionsItemSelected(item); } } }