Java tutorial
/* * Copyright (C) 2013 Daniel Velazco * * 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 no.synth.skbankwrapper.preferences; import android.app.AlertDialog; import android.content.DialogInterface; import android.os.Bundle; import android.preference.EditTextPreference; import android.preference.Preference; import android.preference.PreferenceActivity; import android.preference.PreferenceScreen; import android.support.v4.app.NavUtils; import android.view.MenuItem; import no.synth.skbankwrapper.R; /** * Preferences activity * * TODO: use fragments-based preferences activity */ public class AppPreferences extends PreferenceActivity { // Custom preferences public final static String MENU_DRAWER_SHOWED_OPENED = "drawer_shown_opened"; // Shared preference keys public final static String CAT_GENERAL = "pref_cat_general"; public final static String ALLOW_CHECKINS = "prefs_allow_checkins"; public final static String OPEN_LINKS_INSIDE = "prefs_open_links_inside"; public final static String BLOCK_IMAGES = "prefs_block_images"; public final static String KEY_PROXY_ENABLED = "prefs_enable_proxy"; public final static String KEY_PROXY_HOST = "prefs_proxy_host"; public final static String KEY_PROXY_PORT = "prefs_proxy_port"; public final static String SITE_MODE = "prefs_mobile_site"; public final static String SITE_MODE_AUTO = "auto"; public final static String SITE_MODE_MOBILE = "mobile"; public final static String SITE_MODE_DESKTOP = "desktop"; public final static String SITE_MODE_BASIC = "basic"; public final static String SITE_MODE_ZERO = "zero"; public final static String SITE_MODE_ONION = "onion"; public final static String ABOUT = "pref_about"; // Preferences private EditTextPreference mPrefProxyHost = null; private EditTextPreference mPrefProxyPort = null; /** * {@inheritDoc} */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); getActionBar().setDisplayHomeAsUpEnabled(true); addPreferencesFromResource(R.xml.main_preferences); mPrefProxyHost = (EditTextPreference) findPreference(KEY_PROXY_HOST); mPrefProxyHost.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() { @Override public boolean onPreferenceChange(Preference preference, Object newValue) { String newProxyHostValue = (String) newValue; mPrefProxyHost.setSummary(newProxyHostValue); return true; } }); mPrefProxyPort = (EditTextPreference) findPreference(KEY_PROXY_PORT); mPrefProxyPort.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() { @Override public boolean onPreferenceChange(Preference preference, Object newValue) { String newProxyPortValue = (String) newValue; mPrefProxyPort.setSummary(newProxyPortValue); return true; } }); } /** * {@inheritDoc} */ @Override protected void onResume() { super.onResume(); if (mPrefProxyHost != null) { mPrefProxyHost.setSummary(mPrefProxyHost.getText()); } if (mPrefProxyPort != null) { mPrefProxyPort.setSummary(mPrefProxyPort.getText()); } } /** * {@inheritDoc} */ @Override public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) { // Allow us to open the about dialog in the case the user // presses the About preference item String key = preference.getKey(); if (ABOUT.equals(key)) { showAboutAlert(); return true; } return false; } /** * Show an alert dialog with the information about the application. */ private void showAboutAlert() { AlertDialog alertDialog = new AlertDialog.Builder(this).create(); alertDialog.setTitle(getString(R.string.menu_about)); alertDialog.setMessage(getString(R.string.txt_about)); alertDialog.setIcon(R.drawable.ic_launcher); alertDialog.setButton(DialogInterface.BUTTON_NEUTRAL, getString(R.string.lbl_dialog_close), new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int which) { // Don't do anything, simply close the dialog } }); alertDialog.show(); } /** * {@inheritDoc} */ @Override public boolean onOptionsItemSelected(MenuItem item) { switch (item.getItemId()) { case android.R.id.home: NavUtils.navigateUpFromSameTask(this); break; } return super.onOptionsItemSelected(item); } }