Java tutorial
/* Transportr * Copyright (C) 2013 - 2016 Torsten Grote * * This program is Free Software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package de.grobox.liberario.fragments; import android.app.Activity; import android.content.Intent; import android.content.SharedPreferences; import android.os.Bundle; import android.support.v4.app.ActivityCompat; import android.support.v4.app.ActivityOptionsCompat; import android.support.v4.content.IntentCompat; import android.support.v7.preference.ListPreference; import android.support.v7.preference.Preference; import android.support.v7.preference.PreferenceFragmentCompat; import android.view.View; import de.grobox.liberario.TransportNetwork; import de.grobox.liberario.activities.PickNetworkProviderActivity; import de.grobox.liberario.Preferences; import de.grobox.liberario.R; import de.grobox.liberario.activities.SetHomeActivity; import de.grobox.liberario.activities.MainActivity; import de.grobox.liberario.data.RecentsDB; import de.schildbach.pte.dto.Location; public class PrefsFragment extends PreferenceFragmentCompat implements TransportNetwork.Handler, SharedPreferences.OnSharedPreferenceChangeListener { Preference network_pref; Preference home; @Override public void onCreatePreferences(Bundle savedInstanceState, String s) { // Load the preferences from an XML resource addPreferencesFromResource(R.xml.preferences); TransportNetwork network = Preferences.getTransportNetwork(getActivity()); // Fill in current home location if available network_pref = findPreference("pref_key_network"); if (network != null) network_pref.setSummary(network.getName()); network_pref.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() { @Override public boolean onPreferenceClick(Preference preference) { Intent intent = new Intent(getActivity(), PickNetworkProviderActivity.class); // View view = preference.getView(null, null); View view = getView(); if (view != null) view = view.findFocus(); ActivityOptionsCompat options = ActivityOptionsCompat.makeScaleUpAnimation(view, (int) view.getX(), (int) view.getY(), 0, 0); ActivityCompat.startActivityForResult(getActivity(), intent, MainActivity.CHANGED_NETWORK_PROVIDER, options.toBundle()); return true; } }); home = findPreference("pref_key_home"); home.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() { public boolean onPreferenceClick(Preference preference) { Intent intent = new Intent(getActivity(), SetHomeActivity.class); if (RecentsDB.getHome(getActivity()) != null) { intent.putExtra("new", false); } else { intent.putExtra("new", true); } // View view = preference.getView(null, null); View view = getView(); if (view != null) view = view.findFocus(); ActivityOptionsCompat options = ActivityOptionsCompat.makeScaleUpAnimation(view, (int) view.getX(), (int) view.getY(), 0, 0); ActivityCompat.startActivityForResult(getActivity(), intent, MainActivity.CHANGED_HOME, options.toBundle()); return true; } }); // Fill in current home location if available if (network != null) setHome(); } @Override public void onResume() { super.onResume(); getPreferenceScreen().getSharedPreferences().registerOnSharedPreferenceChangeListener(this); } @Override public void onPause() { super.onPause(); getPreferenceScreen().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this); } @Override public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) { if (key.equals(Preferences.THEME)) { ListPreference themePref = (ListPreference) findPreference(key); themePref.setSummary(themePref.getEntry()); getActivity().finish(); final Intent intent = getActivity().getIntent(); intent.setAction(MainActivity.ACTION_SETTINGS); intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | IntentCompat.FLAG_ACTIVITY_CLEAR_TASK); getActivity().startActivity(intent); // switch back to this fragment, because it doesn't work the first time where fragment is not yet found final Intent intent2 = new Intent(getActivity(), MainActivity.class); intent2.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP); intent2.setAction(MainActivity.ACTION_SETTINGS); startActivity(intent2); } } private void setHome() { Location home_loc = RecentsDB.getHome(getActivity()); if (home_loc != null) { home.setSummary(home_loc.uniqueShortName()); } else { home.setSummary(getResources().getString(R.string.location_home)); } } public void onActivityResult(int requestCode, int resultCode, Intent intent) { super.onActivityResult(requestCode, resultCode, intent); if (requestCode == MainActivity.CHANGED_NETWORK_PROVIDER && resultCode == Activity.RESULT_OK) { ((MainActivity) getActivity()).onNetworkProviderChanged(Preferences.getTransportNetwork(getActivity())); } else if (requestCode == MainActivity.CHANGED_HOME && resultCode == Activity.RESULT_OK) { // set new home setHome(); } } public void onNetworkProviderChanged(TransportNetwork network) { if (getActivity() != null) { // set new network_pref name this.network_pref.setSummary(network.getName()); setHome(); } } }