Java tutorial
/* * Copyright 2013-2015 microG Project Team * * 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.microg.gms.ui; import android.content.Context; import android.content.Intent; import android.content.pm.ApplicationInfo; import android.content.pm.PackageManager; import android.os.Bundle; import android.support.annotation.Nullable; import android.support.v4.app.Fragment; import android.support.v7.preference.Preference; import android.support.v7.preference.PreferenceCategory; import android.support.v7.preference.PreferenceGroup; import android.support.v7.preference.PreferenceScreen; import android.support.v7.preference.PreferenceViewHolder; import android.text.format.DateUtils; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import com.google.android.gms.R; import org.microg.gms.gcm.GcmDatabase; import org.microg.gms.gcm.GcmPrefs; import org.microg.gms.gcm.McsConstants; import org.microg.gms.gcm.McsService; import org.microg.gms.gcm.TriggerReceiver; import org.microg.tools.ui.AbstractSettingsActivity; import org.microg.tools.ui.DimmableIconPreference; import org.microg.tools.ui.SwitchBarResourceSettingsFragment; import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.List; import static android.text.format.DateUtils.FORMAT_SHOW_TIME; import static android.text.format.DateUtils.MINUTE_IN_MILLIS; import static android.text.format.DateUtils.WEEK_IN_MILLIS; public class GcmFragment extends SwitchBarResourceSettingsFragment { public static final String PREF_GCM_STATUS = "pref_gcm_status"; public static final String PREF_GCM_APPS = "gcm_apps"; private GcmDatabase database; private final int MENU_ADVANCED = Menu.FIRST; public GcmFragment() { preferencesResource = R.xml.preferences_gcm; } @Override public void onActivityCreated(@Nullable Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); setHasOptionsMenu(true); switchBar.setChecked(GcmPrefs.get(getContext()).isEnabled()); } @Override public void onCreatePreferencesFix(@Nullable Bundle savedInstanceState, String rootKey) { super.onCreatePreferencesFix(savedInstanceState, rootKey); database = new GcmDatabase(getContext()); updateContent(); } @Override public void onResume() { super.onResume(); updateContent(); } @Override public void onPause() { super.onPause(); database.close(); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { menu.add(0, MENU_ADVANCED, 0, R.string.menu_advanced); super.onCreateOptionsMenu(menu, inflater); } @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case MENU_ADVANCED: Intent intent = new Intent(getContext(), GcmAdvancedFragment.AsActivity.class); startActivity(intent); return true; default: return super.onOptionsItemSelected(item); } } @Override public void onSwitchBarChanged(boolean isChecked) { getPreferenceManager().getSharedPreferences().edit().putBoolean(GcmPrefs.PREF_ENABLE_GCM, isChecked) .apply(); if (!isChecked) { McsService.stop(getContext()); } else { getContext().sendBroadcast( new Intent(TriggerReceiver.FORCE_TRY_RECONNECT, null, getContext(), TriggerReceiver.class)); } updateContent(); } private static void addPreferencesSorted(List<Preference> prefs, PreferenceGroup container) { // If there's some items to display, sort the items and add them to the container. Collections.sort(prefs, new Comparator<Preference>() { @Override public int compare(Preference lhs, Preference rhs) { return lhs.getTitle().toString().toLowerCase().compareTo(rhs.getTitle().toString().toLowerCase()); } }); for (Preference entry : prefs) { container.addPreference(entry); } } private void updateContent() { PreferenceScreen root = getPreferenceScreen(); if (McsService.isConnected()) { root.findPreference(PREF_GCM_STATUS).setSummary(getString(R.string.gcm_state_connected, DateUtils .getRelativeTimeSpanString(McsService.getStartTimestamp(), System.currentTimeMillis(), 0))); } else { root.findPreference(PREF_GCM_STATUS).setSummary(getString(R.string.gcm_state_disconnected)); } PreferenceCategory appList = (PreferenceCategory) root.findPreference(PREF_GCM_APPS); appList.removeAll(); List<GcmDatabase.App> list = database.getAppList(); if (!list.isEmpty()) { List<Preference> appListPrefs = new ArrayList<>(); PackageManager pm = getContext().getPackageManager(); for (GcmDatabase.App app : list) { try { pm.getApplicationInfo(app.packageName, 0); appListPrefs.add(new GcmAppPreference(getPreferenceManager().getContext(), app)); } catch (PackageManager.NameNotFoundException e) { final List<GcmDatabase.Registration> registrations = database .getRegistrationsByApp(app.packageName); if (registrations.isEmpty()) { database.removeApp(app.packageName); } else { appListPrefs.add(new GcmAppPreference(getPreferenceManager().getContext(), app)); } } } addPreferencesSorted(appListPrefs, appList); } else { // If there's no item to display, add a "None" item. Preference banner = new Preference(getPreferenceManager().getContext()); banner.setLayoutResource(R.layout.list_no_item); banner.setTitle(R.string.list_no_item_none); banner.setSelectable(false); appList.addPreference(banner); } } public static class GcmAppPreference extends DimmableIconPreference implements Preference.OnPreferenceClickListener { private GcmDatabase database; private GcmDatabase.App app; public GcmAppPreference(Context context, GcmDatabase.App app) { super(context); this.app = app; this.database = new GcmDatabase(context); setKey(app.packageName); PackageManager packageManager = context.getPackageManager(); try { ApplicationInfo applicationInfo = packageManager.getApplicationInfo(app.packageName, 0); setTitle(packageManager.getApplicationLabel(applicationInfo)); setIcon(packageManager.getApplicationIcon(applicationInfo)); } catch (PackageManager.NameNotFoundException e) { setTitle(app.packageName); setIcon(android.R.drawable.sym_def_app_icon); } setOnPreferenceClickListener(this); updateViewDetails(); } private void updateViewDetails() { if (database.getRegistrationsByApp(app.packageName).isEmpty()) { setSummary(R.string.gcm_not_registered); } else if (app.lastMessageTimestamp > 0) { setSummary(getContext().getString(R.string.gcm_last_message_at, DateUtils.getRelativeDateTimeString(getContext(), app.lastMessageTimestamp, MINUTE_IN_MILLIS, WEEK_IN_MILLIS, FORMAT_SHOW_TIME))); } else { setSummary(R.string.gcm_no_message_yet); } database.close(); } @Override public void onBindViewHolder(PreferenceViewHolder view) { updateViewDetails(); super.onBindViewHolder(view); } @Override public boolean onPreferenceClick(Preference preference) { Intent intent = new Intent(getContext(), GcmAppFragment.AsActivity.class); intent.putExtra(GcmAppFragment.EXTRA_PACKAGE_NAME, app.packageName); getContext().startActivity(intent); return true; } } public static class AsActivity extends AbstractSettingsActivity { public AsActivity() { showHomeAsUp = true; } @Override protected Fragment getFragment() { return new GcmFragment(); } } }