Java tutorial
/* * Copyright 2015 Synced Synapse. All rights reserved. * * 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.xbmc.kore.ui; import android.Manifest; import android.content.Intent; import android.content.SharedPreferences; import android.content.pm.PackageManager; import android.os.Bundle; import android.preference.ListPreference; import android.preference.MultiSelectListPreference; import android.preference.Preference; import android.preference.PreferenceFragment; import android.preference.TwoStatePreference; import android.support.annotation.NonNull; import android.support.v13.app.FragmentCompat; import android.support.v4.app.TaskStackBuilder; import android.support.v4.content.ContextCompat; import android.widget.Toast; import org.xbmc.kore.R; import org.xbmc.kore.Settings; import org.xbmc.kore.host.HostManager; import org.xbmc.kore.service.ConnectionObserversManagerService; import org.xbmc.kore.utils.LogUtils; import org.xbmc.kore.utils.UIUtils; import org.xbmc.kore.utils.Utils; import java.lang.reflect.Method; /** * Simple fragment to display preferences screen */ public class SettingsFragment extends PreferenceFragment implements SharedPreferences.OnSharedPreferenceChangeListener { private static final String TAG = LogUtils.makeLogTag(SettingsFragment.class); private int hostId; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Load the preferences from an XML resource addPreferencesFromResource(R.xml.preferences); // Get the preference for side menu itens and change its Id to include // the current host MultiSelectListPreference sideMenuItens = (MultiSelectListPreference) findPreference( Settings.KEY_PREF_NAV_DRAWER_ITEMS); hostId = HostManager.getInstance(getActivity()).getHostInfo().getId(); sideMenuItens.setKey(Settings.getNavDrawerItemsPrefKey(hostId)); // HACK: After changing the key dinamically like above, we need to force the preference // to read its value. This can be done by calling onSetInitialValue, which is protected, // so, instead of subclassing MultiSelectListPreference and make it public, this little // hack changes its access mode. // Furthermore, only do this is nothing is saved yet on the shared preferences, // otherwise the defaults won't be applied if (getPreferenceManager().getSharedPreferences().getStringSet(Settings.getNavDrawerItemsPrefKey(hostId), null) != null) { Class iterClass = sideMenuItens.getClass(); try { Method m = iterClass.getDeclaredMethod("onSetInitialValue", boolean.class, Object.class); m.setAccessible(true); m.invoke(sideMenuItens, true, null); } catch (Exception e) { } } // Check permission for phone state and set preference accordingly if (!hasPhonePermission()) { TwoStatePreference pauseCallPreference = (TwoStatePreference) findPreference( Settings.KEY_PREF_PAUSE_DURING_CALLS); pauseCallPreference.setChecked(false); } setupPreferences(); } @Override public void onResume() { super.onResume(); getPreferenceScreen().getSharedPreferences().registerOnSharedPreferenceChangeListener(this); } @Override public void onPause() { super.onPause(); getPreferenceScreen().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this); } public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) { // Update summaries setupPreferences(); if (key.equals(Settings.KEY_PREF_THEME) || key.equals(Settings.getNavDrawerItemsPrefKey(hostId))) { // Explicitly clear cache of resource ids that is maintained in the activity UIUtils.playPauseIconsLoaded = false; // restart to apply new theme (actually build an entirely new task stack) TaskStackBuilder.create(getActivity()).addNextIntent(new Intent(getActivity(), RemoteActivity.class)) .addNextIntent(new Intent(getActivity(), SettingsActivity.class)).startActivities(); } // If the pause during call is selected, make sure we have permission to read phone state if (key.equals(Settings.KEY_PREF_PAUSE_DURING_CALLS) && (sharedPreferences .getBoolean(Settings.KEY_PREF_PAUSE_DURING_CALLS, Settings.DEFAULT_PREF_PAUSE_DURING_CALLS))) { if (!hasPhonePermission()) { FragmentCompat.requestPermissions(this, new String[] { Manifest.permission.READ_PHONE_STATE }, Utils.PERMISSION_REQUEST_READ_PHONE_STATE); } } // If one of the settings that use the observer service are modified, restart it if (key.equals(Settings.KEY_PREF_SHOW_NOTIFICATION) || key.equals(Settings.KEY_PREF_PAUSE_DURING_CALLS)) { LogUtils.LOGD(TAG, "Stoping connection observer service"); Intent intent = new Intent(getActivity(), ConnectionObserversManagerService.class); getActivity().stopService(intent); getActivity().startService(intent); } } @Override public void onRequestPermissionsResult(int requestCode, @NonNull String permissions[], @NonNull int[] grantResults) { switch (requestCode) { case Utils.PERMISSION_REQUEST_READ_PHONE_STATE: // If request is cancelled, the result arrays are empty. if ((grantResults.length == 0) || (grantResults[0] != PackageManager.PERMISSION_GRANTED)) { Toast.makeText(getActivity(), R.string.read_phone_state_permission_denied, Toast.LENGTH_SHORT) .show(); TwoStatePreference pauseCallPreference = (TwoStatePreference) findPreference( Settings.KEY_PREF_PAUSE_DURING_CALLS); pauseCallPreference.setChecked(false); } break; } } private boolean hasPhonePermission() { return ContextCompat.checkSelfPermission(getActivity(), Manifest.permission.READ_PHONE_STATE) == PackageManager.PERMISSION_GRANTED; } /** * Sets up the preferences state and summaries */ private void setupPreferences() { // Theme preferences ListPreference themePref = (ListPreference) findPreference(Settings.KEY_PREF_THEME); themePref.setSummary(themePref.getEntry()); // About preference String nameAndVersion = getActivity().getString(R.string.app_name); try { nameAndVersion += " " + getActivity().getPackageManager().getPackageInfo(getActivity().getPackageName(), 0).versionName; } catch (PackageManager.NameNotFoundException exc) { } Preference aboutPreference = findPreference(Settings.KEY_PREF_ABOUT); aboutPreference.setSummary(nameAndVersion); aboutPreference.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() { @Override public boolean onPreferenceClick(Preference preference) { AboutDialogFragment aboutDialog = new AboutDialogFragment(); aboutDialog.show(getActivity().getFragmentManager(), null); return true; } }); } }