Java tutorial
/** * Copyright (C) 2013 by Raphael Michel under the MIT license: * * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and * associated documentation files (the "Software"), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, publish, distribute, * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all copies or * substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT * NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ package de.geeksfactory.opacclient.frontend; import android.app.Activity; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.content.SharedPreferences; import android.os.Build; import android.os.Bundle; import android.support.design.widget.Snackbar; import android.support.v4.app.DialogFragment; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentTransaction; import android.support.v4.content.LocalBroadcastManager; import android.support.v7.preference.CheckBoxPreference; import android.support.v7.preference.ListPreference; import android.support.v7.preference.Preference; import android.support.v7.preference.PreferenceCategory; import android.support.v7.preference.PreferenceFragmentCompat; import android.support.v7.preference.PreferenceManager; import android.text.format.DateUtils; import org.joda.time.DateTime; import de.geeksfactory.opacclient.OpacClient; import de.geeksfactory.opacclient.R; import de.geeksfactory.opacclient.reminder.ReminderHelper; import de.geeksfactory.opacclient.reminder.SyncAccountService; import de.geeksfactory.opacclient.storage.AccountDataSource; import de.geeksfactory.opacclient.storage.JsonSearchFieldDataSource; import de.geeksfactory.opacclient.storage.PreferenceDataSource; import de.geeksfactory.opacclient.storage.SearchFieldDataSource; import de.geeksfactory.opacclient.webservice.LibraryConfigUpdateService; public class MainPreferenceFragment extends PreferenceFragmentCompat { public static final String TAG_DIALOG = "dialog"; protected Activity context; @SuppressWarnings("SameReturnValue") // Plus Edition compatibility protected boolean ebooksSupported() { return false; } @Override public void onCreatePreferences(Bundle savedInstanceState, String rootKey) { this.context = getActivity(); addPreferencesFromResource(R.xml.settings); if (Build.VERSION.SDK_INT < Build.VERSION_CODES.ICE_CREAM_SANDWICH || !context.getPackageManager().hasSystemFeature("android.hardware.nfc")) { if (findPreference("nfc_search") != null) { findPreference("nfc_search").setEnabled(false); } } Preference assistant = findPreference("accounts"); assistant.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() { @Override public boolean onPreferenceClick(Preference arg0) { ((OpacClient) context.getApplication()).openAccountList(context); return false; } }); if (!ebooksSupported()) { ((PreferenceCategory) findPreference("cat_web_opac")).removePreference(findPreference("email")); } CheckBoxPreference notification = (CheckBoxPreference) findPreference("notification_service"); if (notification != null) { notification.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() { @Override public boolean onPreferenceChange(Preference preference, Object newValue) { boolean enabled = (Boolean) newValue; new ReminderHelper((OpacClient) getActivity().getApplication()).updateAlarms(enabled); return true; } }); } ListPreference warning = (ListPreference) findPreference("notification_warning"); if (warning != null) { warning.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() { @Override public boolean onPreferenceChange(Preference preference, Object newValue) { SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getActivity()); //int oldWarning = Integer.parseInt(prefs.getString("notification_warning", // "3")); int newWarning = Integer.parseInt((String) newValue); new ReminderHelper((OpacClient) getActivity().getApplication()).updateAlarms(newWarning); return true; } }); } Preference meta_run_check = findPreference("meta_run_check"); if (meta_run_check != null) { meta_run_check.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() { @Override public boolean onPreferenceClick(Preference arg0) { Intent i = new Intent(context, SyncAccountService.class); context.startService(i); return false; } }); } Preference meta = findPreference("meta_clear"); if (meta != null) { meta.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() { @Override public boolean onPreferenceClick(Preference arg0) { AccountDataSource adata = new AccountDataSource(context); adata.invalidateCachedData(); new ReminderHelper((OpacClient) context.getApplication()).updateAlarms(-1); SearchFieldDataSource sfdata = new JsonSearchFieldDataSource(context); sfdata.clearAll(); SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity()); sp.edit().remove("reservation_fee_warning_ignore").apply(); Intent i = new Intent(context, SyncAccountService.class); context.startService(i); return false; } }); } final Preference updateLibraryConfig = findPreference("update_library_config"); if (updateLibraryConfig != null) { updateLibraryConfig.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() { @Override public boolean onPreferenceClick(Preference preference) { IntentFilter successFilter = new IntentFilter(LibraryConfigUpdateService.ACTION_SUCCESS); IntentFilter failureFilter = new IntentFilter(LibraryConfigUpdateService.ACTION_FAILURE); BroadcastReceiver receiver = new LibraryConfigServiceReceiver(updateLibraryConfig); LocalBroadcastManager.getInstance(context).registerReceiver(receiver, successFilter); LocalBroadcastManager.getInstance(context).registerReceiver(receiver, failureFilter); Intent i = new Intent(context, LibraryConfigUpdateService.class); context.startService(i); DialogFragment newFragment = ProgressDialogFragment .getInstance(R.string.updating_library_config); showDialog(newFragment); updateLibraryConfig.setEnabled(false); return false; } }); refreshLastConfigUpdate(updateLibraryConfig); } final Preference resetLibraryConfig = findPreference("reset_library_config"); if (resetLibraryConfig != null) { PreferenceDataSource prefs = new PreferenceDataSource(getActivity()); resetLibraryConfig.setEnabled(prefs.hasBundledConfiguration()); resetLibraryConfig.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() { @Override public boolean onPreferenceClick(Preference preference) { LibraryConfigUpdateService.clearConfigurationUpdates(getContext()); if (getView() != null) { Snackbar.make(getView(), R.string.library_config_reset, Snackbar.LENGTH_SHORT).show(); refreshLastConfigUpdate(updateLibraryConfig); } return false; } }); } } private void refreshLastConfigUpdate(Preference updateLibraryConfig) { DateTime lastUpdate = new PreferenceDataSource(context).getLastLibraryConfigUpdate(); if (lastUpdate != null) { CharSequence lastUpdateStr = DateUtils.getRelativeTimeSpanString(context, lastUpdate.getMillis(), true); updateLibraryConfig.setSummary(getString(R.string.library_config_last_update, lastUpdateStr)); } else { updateLibraryConfig.setSummary(getString(R.string.library_config_last_update_never)); } } private void showDialog(DialogFragment newFragment) { FragmentTransaction ft = getFragmentManager().beginTransaction(); Fragment prev = getFragmentManager().findFragmentByTag(TAG_DIALOG); if (prev != null) { ft.remove(prev); } ft.disallowAddToBackStack(); newFragment.show(ft, TAG_DIALOG); } private void removeDialogs() { FragmentTransaction ft = getFragmentManager().beginTransaction(); Fragment prev = getFragmentManager().findFragmentByTag(TAG_DIALOG); if (prev != null) { ft.remove(prev); } ft.disallowAddToBackStack(); ft.commit(); } private class LibraryConfigServiceReceiver extends BroadcastReceiver { private final Preference updateLibraryConfig; public LibraryConfigServiceReceiver(Preference updateLibraryConfig) { this.updateLibraryConfig = updateLibraryConfig; } @Override public void onReceive(Context context, Intent intent) { if (!MainPreferenceFragment.this.isAdded()) return; updateLibraryConfig.setEnabled(true); removeDialogs(); if (getView() != null) { switch (intent.getAction()) { case LibraryConfigUpdateService.ACTION_SUCCESS: int count = intent.getIntExtra(LibraryConfigUpdateService.EXTRA_UPDATE_COUNT, 0); String text; if (count > 0) { text = getString(R.string.library_config_update_success, count); } else { text = getString(R.string.library_config_no_updates); } Snackbar.make(getView(), text, Snackbar.LENGTH_SHORT).show(); refreshLastConfigUpdate(updateLibraryConfig); break; case LibraryConfigUpdateService.ACTION_FAILURE: Snackbar.make(getView(), R.string.library_config_update_failure, Snackbar.LENGTH_SHORT).show(); break; } } LocalBroadcastManager.getInstance(context).unregisterReceiver(this); } } }