com.nadmm.airports.PreferencesActivity.java Source code

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Here is the source code for com.nadmm.airports.PreferencesActivity.java

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/*
 * FlightIntel for Pilots
 *
 * Copyright 2011-2015 Nadeem Hasan <nhasan@nadmm.com>
 *
 * 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 com.nadmm.airports;

import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.ActionBar;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceFragmentCompat;
import android.support.v7.widget.Toolbar;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;

import com.nadmm.airports.utils.UiUtils;

public class PreferencesActivity extends FragmentActivityBase {

    public static final String KEY_HOME_AIRPORT = "home_airport";
    public static final String KEY_LOCATION_USE_GPS = "location_use_gps";
    public static final String KEY_LOCATION_NEARBY_RADIUS = "location_nearby_radius";
    public static final String KEY_SHOW_EXTRA_RUNWAY_DATA = "extra_runway_data";
    public static final String KEY_SHOW_GPS_NOTAMS = "show_gps_notams";
    public static final String KEY_AUTO_DOWNLOAD_ON_3G = "auto_download_on_3G";
    public static final String KEY_DISCLAIMER_AGREED = "disclaimer_agreed";
    public static final String KEY_SHOW_LOCAL_TIME = "show_local_time";
    public static final String KEY_HOME_SCREEN = "home_screen";
    public static final String KEY_ALWAYS_SHOW_NEARBY = "always_show_nearby";

    @SuppressWarnings("deprecation")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar_actionbar);

        setSupportActionBar(toolbar);
        ActionBar actionBar = getSupportActionBar();
        if (actionBar != null) {
            actionBar.setDisplayHomeAsUpEnabled(true);
            actionBar.setDisplayShowHomeEnabled(true);
        }

        addPreferencesFragment();
    }

    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        MenuItem settings = menu.findItem(R.id.menu_settings);
        settings.setVisible(false);

        return super.onPrepareOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case android.R.id.home:
            onBackPressed();
            return true;
        default:
            return super.onOptionsItemSelected(item);
        }
    }

    @Override
    protected int getSelfNavDrawerItem() {
        return R.id.navdrawer_settings;
    }

    protected Fragment addPreferencesFragment() {
        Class clss = PreferencesFragment.class;
        String tag = clss.getSimpleName();
        FragmentManager fm = getSupportFragmentManager();
        Fragment f = fm.findFragmentByTag(tag);
        if (f == null) {
            f = Fragment.instantiate(this, clss.getName(), getIntent().getExtras());
            FragmentTransaction ft = fm.beginTransaction();
            ft.add(R.id.fragment_container, f, tag);
            ft.commit();
        }
        return f;
    }

    public static class PreferencesFragment extends PreferenceFragmentCompat
            implements OnSharedPreferenceChangeListener {

        private SharedPreferences mSharedPrefs;

        @SuppressWarnings("deprecation")
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
        }

        @Override
        public void onCreatePreferences(Bundle bundle, String s) {
            addPreferencesFromResource(R.xml.preferences);
            mSharedPrefs = getPreferenceScreen().getSharedPreferences();
        }

        @Override
        public void onResume() {
            super.onResume();
            // Initialize the preference screen
            onSharedPreferenceChanged(mSharedPrefs, KEY_LOCATION_NEARBY_RADIUS);
            onSharedPreferenceChanged(mSharedPrefs, KEY_HOME_AIRPORT);

            // Set up a listener whenever a key changes
            mSharedPrefs.registerOnSharedPreferenceChangeListener(this);
        }

        @Override
        public void onPause() {
            super.onPause();
            // Unregister the listener whenever a key changes
            mSharedPrefs.unregisterOnSharedPreferenceChangeListener(this);
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
            View view = super.onCreateView(inflater, container, savedInstanceState);
            int actionbarSize = UiUtils.calculateActionBarSize(getActivity());
            view.setPadding(view.getPaddingLeft(), actionbarSize, view.getPaddingRight(), view.getPaddingBottom());
            return view;
        }

        @SuppressWarnings("deprecation")
        @Override
        public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
            Preference pref = findPreference(key);
            if (key.equals(KEY_LOCATION_NEARBY_RADIUS)) {
                String radius = mSharedPrefs.getString(key, "30");
                pref.setSummary("Show locations within " + radius + " NM radius");
            } else if (key.equals(KEY_HOME_AIRPORT)) {
                String code = mSharedPrefs.getString(KEY_HOME_AIRPORT, "");
                if (code.length() > 0) {
                    pref.setSummary("Home airport set to " + code);
                } else {
                    pref.setSummary("Set the code for your home airport");
                }
            }
        }

    }

}