Android Open Source - MifareClassicTool Preferences

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License

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

/*
 * Copyright 2014 Gerhard Klostermeier// w w w  .jav  a 2s  .c  om
 *
 * 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.syss.MifareClassicTool.Activities;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.CheckBox;
import de.syss.MifareClassicTool.Common;
import de.syss.MifareClassicTool.R;

/**
 * This view will let the user edit global preferences.
 * @author Gerhard Klostermeier
 */
public class Preferences extends BasicActivity {

    /**
     * Enumeration with all preferences. This enumeration implements
     * "toString()" so it can be used to access the shared preferences (e.g.
     * SharedPreferences.getBoolean(Pref.AutoReconnect.toString(), false)).
     */
    public enum Preference {
        AutoReconnect("auto_reconnect"),
        SaveLastUsedKeyFiles("save_last_used_key_files");
        // Add more preferences here (comma separated).

        private final String text;

        private Preference(final String text) {
            this.text = text;
        }

        @Override
        public String toString() {
            return text;
        }
    }

    CheckBox mPrefAutoReconnect;
    CheckBox mPrefSaveLastUsedKeyFiles;

    /**
     * Initialize the preferences with the last stored ones.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_preferences);

        // Get preferences (init. the member variables).
        mPrefAutoReconnect = (CheckBox) findViewById(
                R.id.checkBoxPreferencesAutoReconnect);
        mPrefSaveLastUsedKeyFiles = (CheckBox) findViewById(
                R.id.checkBoxPreferencesSaveLastUsedKeyFiles);

        // Assign the last stored values.
        SharedPreferences pref = Common.getPreferences();
        mPrefAutoReconnect.setChecked(pref.getBoolean(
                Preference.AutoReconnect.toString(), false));
        mPrefSaveLastUsedKeyFiles.setChecked(pref.getBoolean(
                Preference.SaveLastUsedKeyFiles.toString(), true));
    }

    /**
     * Show information on the "auto reconnect" preference.
     * @param view The View object that triggered the method
     * (in this case the info on auto reconnect button).
     */
    public void onShowAutoReconnectInfo(View view) {
        new AlertDialog.Builder(this)
            .setTitle(R.string.dialog_auto_reconnect_title)
            .setMessage(R.string.dialog_auto_reconnect)
            .setIcon(android.R.drawable.ic_dialog_info)
            .setPositiveButton(R.string.action_ok,
                    new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    // Do nothing.
                }
            }).show();
    }

    /**
     * Save the preferences (to the application context,
     * {@link Common#getPreferences()}).
     * @param view The View object that triggered the method
     * (in this case the save button).
     */
    public void onSave(View view) {
        // Save preferences.
        SharedPreferences.Editor edit = Common.getPreferences().edit();
        edit.putBoolean(Preference.AutoReconnect.toString(),
                mPrefAutoReconnect.isChecked());
        edit.putBoolean(Preference.SaveLastUsedKeyFiles.toString(),
                mPrefSaveLastUsedKeyFiles.isChecked());
        edit.apply();

        // Exit the preferences view.
        finish();
    }

    /**
     * Exit the preferences view without saving anything.
     * @param view The View object that triggered the method
     * (in this case the cancel button).
     */
    public void onCancel(View view) {
        finish();
    }
}
Java Source Code List
