Java tutorial
/* * Copyright (C) 2015 The Android Open Source Project * * 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.android.messaging.ui.appsettings; import android.app.FragmentTransaction; import android.content.ActivityNotFoundException; import android.content.Intent; import android.content.SharedPreferences; import android.content.SharedPreferences.OnSharedPreferenceChangeListener; import android.content.pm.PackageManager; import android.os.Bundle; import android.preference.Preference; import android.preference.Preference.OnPreferenceClickListener; import android.preference.PreferenceCategory; import android.preference.PreferenceFragment; import android.preference.PreferenceScreen; import android.support.v4.app.NavUtils; import android.text.TextUtils; import android.view.MenuItem; import com.android.messaging.Factory; import com.android.messaging.R; import com.android.messaging.datamodel.ParticipantRefresh; import com.android.messaging.datamodel.data.ParticipantData; import com.android.messaging.sms.ApnDatabase; import com.android.messaging.sms.MmsConfig; import com.android.messaging.sms.MmsUtils; import com.android.messaging.ui.BugleActionBarActivity; import com.android.messaging.ui.UIIntents; import com.android.messaging.util.Assert; import com.android.messaging.util.BuglePrefs; import com.android.messaging.util.LogUtil; import com.android.messaging.util.PhoneUtils; public class PerSubscriptionSettingsActivity extends BugleActionBarActivity { @Override protected void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState); getSupportActionBar().setDisplayHomeAsUpEnabled(true); final String title = getIntent().getStringExtra(UIIntents.UI_INTENT_EXTRA_PER_SUBSCRIPTION_SETTING_TITLE); if (!TextUtils.isEmpty(title)) { getSupportActionBar().setTitle(title); } else { // This will fall back to the default title, i.e. "Messaging settings," so No-op. } final FragmentTransaction ft = getFragmentManager().beginTransaction(); final PerSubscriptionSettingsFragment fragment = new PerSubscriptionSettingsFragment(); ft.replace(android.R.id.content, fragment); ft.commit(); } @Override public boolean onOptionsItemSelected(final MenuItem item) { switch (item.getItemId()) { case android.R.id.home: NavUtils.navigateUpFromSameTask(this); return true; } return super.onOptionsItemSelected(item); } public static class PerSubscriptionSettingsFragment extends PreferenceFragment implements OnSharedPreferenceChangeListener { private PhoneNumberPreference mPhoneNumberPreference; private Preference mGroupMmsPreference; private String mGroupMmsPrefKey; private String mPhoneNumberKey; private int mSubId; public PerSubscriptionSettingsFragment() { // Required empty constructor } @Override public void onCreate(final Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Get sub id from launch intent final Intent intent = getActivity().getIntent(); Assert.notNull(intent); mSubId = (intent != null) ? intent.getIntExtra(UIIntents.UI_INTENT_EXTRA_SUB_ID, ParticipantData.DEFAULT_SELF_SUB_ID) : ParticipantData.DEFAULT_SELF_SUB_ID; final BuglePrefs subPrefs = Factory.get().getSubscriptionPrefs(mSubId); getPreferenceManager().setSharedPreferencesName(subPrefs.getSharedPreferencesName()); addPreferencesFromResource(R.xml.preferences_per_subscription); mPhoneNumberKey = getString(R.string.mms_phone_number_pref_key); mPhoneNumberPreference = (PhoneNumberPreference) findPreference(mPhoneNumberKey); final PreferenceCategory advancedCategory = (PreferenceCategory) findPreference( getString(R.string.advanced_category_pref_key)); final PreferenceCategory mmsCategory = (PreferenceCategory) findPreference( getString(R.string.mms_messaging_category_pref_key)); mPhoneNumberPreference.setDefaultPhoneNumber( PhoneUtils.get(mSubId).getCanonicalForSelf(false/*allowOverride*/), mSubId); mGroupMmsPrefKey = getString(R.string.group_mms_pref_key); mGroupMmsPreference = findPreference(mGroupMmsPrefKey); if (!MmsConfig.get(mSubId).getGroupMmsEnabled()) { // Always show group messaging setting even if the SIM has no number // If broadcast sms is selected, the SIM number is not needed // If group mms is selected, the phone number dialog will popup when message // is being sent, making sure we will have a self number for group mms. mmsCategory.removePreference(mGroupMmsPreference); } else { mGroupMmsPreference.setOnPreferenceClickListener(new OnPreferenceClickListener() { @Override public boolean onPreferenceClick(Preference pref) { GroupMmsSettingDialog.showDialog(getActivity(), mSubId); return true; } }); updateGroupMmsPrefSummary(); } if (!MmsConfig.get(mSubId).getSMSDeliveryReportsEnabled()) { final Preference deliveryReportsPref = findPreference( getString(R.string.delivery_reports_pref_key)); mmsCategory.removePreference(deliveryReportsPref); } final Preference wirelessAlertPref = findPreference(getString(R.string.wireless_alerts_key)); if (!isCellBroadcastAppLinkEnabled()) { advancedCategory.removePreference(wirelessAlertPref); } else { wirelessAlertPref.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() { @Override public boolean onPreferenceClick(final Preference preference) { try { startActivity(UIIntents.get().getWirelessAlertsIntent()); } catch (final ActivityNotFoundException e) { // Handle so we shouldn't crash if the wireless alerts // implementation is broken. LogUtil.e(LogUtil.BUGLE_TAG, "Failed to launch wireless alerts activity", e); } return true; } }); } // Access Point Names (APNs) final Preference apnsPref = findPreference(getString(R.string.sms_apns_key)); if (MmsUtils.useSystemApnTable() && !ApnDatabase.doesDatabaseExist()) { // Don't remove the ability to edit the local APN prefs if this device lets us // access the system APN, but we can't find the MCC/MNC in the APN table and we // created the local APN table in case the MCC/MNC was in there. In other words, // if the local APN table exists, let the user edit it. advancedCategory.removePreference(apnsPref); } else { final PreferenceScreen apnsScreen = (PreferenceScreen) findPreference( getString(R.string.sms_apns_key)); apnsScreen.setIntent( UIIntents.get().getApnSettingsIntent(getPreferenceScreen().getContext(), mSubId)); } // We want to disable preferences if we are not the default app, but we do all of the // above first so that the user sees the correct information on the screen if (!PhoneUtils.getDefault().isDefaultSmsApp()) { mGroupMmsPreference.setEnabled(false); final Preference autoRetrieveMmsPreference = findPreference( getString(R.string.auto_retrieve_mms_pref_key)); autoRetrieveMmsPreference.setEnabled(false); final Preference deliveryReportsPreference = findPreference( getString(R.string.delivery_reports_pref_key)); deliveryReportsPreference.setEnabled(false); } } private boolean isCellBroadcastAppLinkEnabled() { if (!MmsConfig.get(mSubId).getShowCellBroadcast()) { return false; } try { final PackageManager pm = getActivity().getPackageManager(); return pm.getApplicationEnabledSetting( UIIntents.CMAS_COMPONENT) != PackageManager.COMPONENT_ENABLED_STATE_DISABLED; } catch (final IllegalArgumentException ignored) { // CMAS app not installed. } return false; } private void updateGroupMmsPrefSummary() { final boolean groupMmsEnabled = getPreferenceScreen().getSharedPreferences() .getBoolean(mGroupMmsPrefKey, getResources().getBoolean(R.bool.group_mms_pref_default)); mGroupMmsPreference .setSummary(groupMmsEnabled ? R.string.enable_group_mms : R.string.disable_group_mms); } @Override public void onResume() { super.onResume(); getPreferenceScreen().getSharedPreferences().registerOnSharedPreferenceChangeListener(this); } @Override public void onSharedPreferenceChanged(final SharedPreferences sharedPreferences, final String key) { if (key.equals(mGroupMmsPrefKey)) { updateGroupMmsPrefSummary(); } else if (key.equals(mPhoneNumberKey)) { // Save the changed phone number in preferences specific to the sub id final String newPhoneNumber = mPhoneNumberPreference.getText(); final BuglePrefs subPrefs = BuglePrefs.getSubscriptionPrefs(mSubId); if (TextUtils.isEmpty(newPhoneNumber)) { subPrefs.remove(mPhoneNumberKey); } else { subPrefs.putString(getString(R.string.mms_phone_number_pref_key), newPhoneNumber); } // Update the self participants so the new phone number will be reflected // everywhere in the UI. ParticipantRefresh.refreshSelfParticipants(); } } @Override public void onPause() { super.onPause(); getPreferenceScreen().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this); } } }