Android Open Source - frc-notebook Settings Activity

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License

The source code is released under:
GNU General Public License
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Java Source Code

package com.plnyyanks.frcnotebook.activities;
//from   w  w  w . j  av  a 2s.  co  m
import android.annotation.TargetApi;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.res.Configuration;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.preference.ListPreference;
import android.preference.Preference;
import android.preference.PreferenceActivity;
import android.preference.PreferenceFragment;
import android.preference.PreferenceManager;
import android.widget.Toast;

import com.plnyyanks.frcnotebook.Constants;
import com.plnyyanks.frcnotebook.R;
import com.plnyyanks.frcnotebook.database.BackupDatabase;
import com.plnyyanks.frcnotebook.database.ImportDatabase;
import com.plnyyanks.frcnotebook.database.PreferenceHandler;

import java.io.File;
import java.util.List;

/**
 * A {@link PreferenceActivity} that presents a set of application settings. On
 * handset devices, settings are presented as a single list. On tablets,
 * settings are split by category, with category headers shown to the left of
 * the list of settings.
 * <p>
 * See <a href="http://developer.android.com/design/patterns/settings.html">
 * Android Design: Settings</a> for design guidelines and the <a
 * href="http://developer.android.com/guide/topics/ui/settings.html">Settings
 * API Guide</a> for more information on developing a Settings UI.
 */
/**
 * File created by phil on 3/1/14.
 * Copyright 2014, Phil Lopreiato
 * This file is part of FRC Notebook.
 * FRC Notebook 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.
 * FRC Notebook 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 FRC Notebook. If not, see http://www.gnu.org/licenses/.
 */
public class SettingsActivity extends PreferenceActivity {
    /**
     * Determines whether to always show the simplified settings UI, where
     * settings are presented in a single list. When false, settings are shown
     * as a master/detail two-pane view on tablets. When true, a single pane is
     * shown on tablets.
     */
    private static final boolean ALWAYS_SIMPLE_PREFS = true;
    private static Activity activity;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        setTheme(PreferenceHandler.getTheme());
        super.onCreate(savedInstanceState);
        activity = this;
    }

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);

        setupSimplePreferencesScreen();
    }

    @Override
    protected void onResume() {
        StartActivity.checkThemeChanged(SettingsActivity.class);
        super.onResume();
    }

    @TargetApi(Build.VERSION_CODES.KITKAT)
    @Override
    protected boolean isValidFragment(String fragmentName) {
        return  GeneralPreferenceFragment.class.getName().equals(fragmentName) ||
                AppearancePreferenceFragment.class.getName().equals(fragmentName)||
                super.isValidFragment(fragmentName);
    }

    /**
     * Shows the simplified settings UI if the device configuration if the
     * device configuration dictates that a simplified, single-pane UI should be
     * shown.
     */
    private void setupSimplePreferencesScreen() {
        if (!isSimplePreferences(this)) {
            return;
        }

        // In the simplified UI, fragments are not used at all and we instead
        // use the older PreferenceActivity APIs.

        // Add 'general' preferences.
        addPreferencesFromResource(R.xml.pref_general);

        // Bind the summaries of EditText/List/Dialog/Ringtone preferences to
        // their values. When their values change, their summaries are updated
        // to reflect the new value, per the Android Design guidelines.
        bindPreferenceSummaryToValue(findPreference("competition_season"));
        bindPreferenceSummaryToValue(findPreference("data_source"));
        Preference managePredef = findPreference("open_predef_notes");
        managePredef.setIntent(new Intent(this,PredefinedNoteManager.class));

        addPreferencesFromResource(R.xml.pref_appearance);
        bindPreferenceSummaryToValue(findPreference("theme"));

        addPreferencesFromResource(R.xml.pref_app_data);
        Preference clearData = (Preference)findPreference("data_clear");
        clearData.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
            @Override
            public boolean onPreferenceClick(Preference preference) {
                AlertDialog.Builder builder = new AlertDialog.Builder(activity);
                builder.setTitle("Confirm Deletion");
                builder.setMessage("Are you sure you want to delete all stored data?");
                builder.setPositiveButton("Yes",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int id) {
                                //delete the data now
                                StartActivity.db.clearDatabase();
                                Toast.makeText(activity, "Cleared all data", Toast.LENGTH_SHORT).show();
                                dialog.cancel();
                            }
                        });

                builder.setNegativeButton("No",
                        new DialogInterface.OnClickListener() {
                            public void onClick(DialogInterface dialog, int id) {
                                dialog.cancel();
                            }
                        });
                builder.create().show();
                return false;
            }
        });
        File backupFile =  new File(activity.getFilesDir(), Constants.DB_BACKUP_NAME);
        Preference importData = (Preference)findPreference("import_data");
        importData.setShouldDisableView(!(backupFile.exists() && !backupFile.isDirectory()));
        importData.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
            @Override
            public boolean onPreferenceClick(Preference preference) {
                new ImportDatabase(activity).execute("");
                return false;
            }
        });
        Preference exportData = (Preference)findPreference("export_data");
        exportData.setOnPreferenceClickListener(new Preference.OnPreferenceClickListener() {
            @Override
            public boolean onPreferenceClick(Preference preference) {
                new BackupDatabase(activity).execute(true, true, true, true);
                return false;
            }
        });

        addPreferencesFromResource(R.xml.pref_appinfo);
        bindPreferenceSummaryToValue(findPreference("app_version"));
        Preference githubLink = (Preference)findPreference("github_link");
        githubLink.setIntent(new Intent(Intent.ACTION_VIEW, Uri.parse("https://github.com/plnyyanks/frc-notebook/")));
        Preference changelogLink = (Preference)findPreference("view_changelog");
        changelogLink.setIntent(new Intent(Intent.ACTION_VIEW,Uri.parse("https://github.com/plnyyanks/frc-notebook/releases/tag/v"+PreferenceHandler.getAppVersion())));
        Preference showLicense = (Preference)findPreference("view_license");
        showLicense.setIntent(new Intent(Intent.ACTION_VIEW,Uri.parse("http://www.gnu.org/licenses/gpl-3.0.html")));
    }

    /** {@inheritDoc} */
    @Override
    public boolean onIsMultiPane() {
        return isXLargeTablet(this) && !isSimplePreferences(this);
    }

    /**
     * Helper method to determine if the device has an extra-large screen. For
     * example, 10" tablets are extra-large.
     */
    private static boolean isXLargeTablet(Context context) {
        return (context.getResources().getConfiguration().screenLayout
        & Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_XLARGE;
    }

    /**
     * Determines whether the simplified settings UI should be shown. This is
     * true if this is forced via {@link #ALWAYS_SIMPLE_PREFS}, or the device
     * doesn't have newer APIs like {@link PreferenceFragment}, or the device
     * doesn't have an extra-large screen. In these cases, a single-pane
     * "simplified" settings UI should be shown.
     */
    private static boolean isSimplePreferences(Context context) {
       return ALWAYS_SIMPLE_PREFS
                || Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB
                || !isXLargeTablet(context);
    }

    /** {@inheritDoc} */
    @Override
    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public void onBuildHeaders(List<Header> target) {
        if (!isSimplePreferences(this)) {
            loadHeadersFromResource(R.xml.pref_headers, target);
        }
    }

    /**
     * A preference value change listener that updates the preference's summary
     * to reflect its new value.
     */
    private static Preference.OnPreferenceChangeListener sBindPreferenceSummaryToValueListener = new Preference.OnPreferenceChangeListener() {
        @Override
        public boolean onPreferenceChange(Preference preference, Object value) {
            String stringValue = value.toString();

            if (preference instanceof ListPreference) {
                // For list preferences, look up the correct display value in
                // the preference's 'entries' list.
                ListPreference listPreference = (ListPreference) preference;
                int index = listPreference.findIndexOfValue(stringValue);

                // Set the summary to reflect the new value.
                preference.setSummary(
                        index >= 0
                                ? listPreference.getEntries()[index]
                                : null);

            } else {
                // For all other preferences, set the summary to the value's
                // simple string representation.
                preference.setSummary(stringValue);
            }

            return true;
        }
    };

    /**
     * Binds a preference's summary to its value. More specifically, when the
     * preference's value is changed, its summary (line of text below the
     * preference title) is updated to reflect the value. The summary is also
     * immediately updated upon calling this method. The exact display format is
     * dependent on the type of preference.
     *
     * @see #sBindPreferenceSummaryToValueListener
     */
    private static void bindPreferenceSummaryToValue(Preference preference) {
        // Set the listener to watch for value changes.
        preference.setOnPreferenceChangeListener(sBindPreferenceSummaryToValueListener);

        // Trigger the listener immediately with the preference's
        // current value.
        sBindPreferenceSummaryToValueListener.onPreferenceChange(preference,
                PreferenceManager
                        .getDefaultSharedPreferences(preference.getContext())
                        .getString(preference.getKey(), ""));
    }

    /**
     * This fragment shows general preferences only. It is used when the
     * activity is showing a two-pane settings UI.
     */
    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public static class GeneralPreferenceFragment extends PreferenceFragment {
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.pref_general);

            // Bind the summaries of EditText/List/Dialog/Ringtone preferences
            // to their values. When their values change, their summaries are
            // updated to reflect the new value, per the Android Design
            // guidelines.
            bindPreferenceSummaryToValue(findPreference("competition_season"));
            bindPreferenceSummaryToValue(findPreference("data_source"));
            bindPreferenceSummaryToValue(findPreference("show_field_monitor"));
        }
    }

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public static class AppearancePreferenceFragment extends PreferenceFragment {
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.pref_appearance);

            // Bind the summaries of EditText/List/Dialog/Ringtone preferences
            // to their values. When their values change, their summaries are
            // updated to reflect the new value, per the Android Design
            // guidelines.
            bindPreferenceSummaryToValue(findPreference("theme"));
        }
    }

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public static class AppInfoPreferenceFragment extends PreferenceFragment {
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.pref_appinfo);

            // Bind the summaries of EditText/List/Dialog/Ringtone preferences
            // to their values. When their values change, their summaries are
            // updated to reflect the new value, per the Android Design
            // guidelines.
            bindPreferenceSummaryToValue(findPreference("app_version"));
        }
    }

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public static class DataPreferenceFragment extends PreferenceFragment {
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            addPreferencesFromResource(R.xml.pref_app_data);

            // Bind the summaries of EditText/List/Dialog/Ringtone preferences
            // to their values. When their values change, their summaries are
            // updated to reflect the new value, per the Android Design
            // guidelines.
            bindPreferenceSummaryToValue(findPreference("data_clear"));
        }
    }
}
Java Source Code List
