Android Open Source - android-sw-tempwidget Temp Widget Preference Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
Copyright (c) 2011, Sony Ericsson Mobile Communications AB
Copyright (c) 2011-2014, Sony Mobile Communications AB
//from  ww  w .  j  a v  a2s  .  c o m
 All rights reserved.

 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice, this
 list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above copyright notice,
 this list of conditions and the following disclaimer in the documentation
 and/or other materials provided with the distribution.

 * Neither the name of the Sony Ericsson Mobile Communications AB / Sony Mobile
 Communications AB nor the names of its contributors may be used to endorse or promote
 products derived from this software without specific prior written permission.

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package de.uvwxy.swidgets.temp;

import de.uvwxy.swidgets.temp.R;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.os.Bundle;
import android.preference.ListPreference;
import android.preference.Preference;
import android.preference.Preference.OnPreferenceClickListener;
import android.preference.PreferenceActivity;
import android.preference.PreferenceCategory;
import android.util.Log;

/**
 * This preference activity provides a readme dialog containing information
 * about this sample project as well as usage instructions.
 */
public class TempWidgetPreferenceActivity extends PreferenceActivity implements OnSharedPreferenceChangeListener {
    private static final int DIALOG_READ_ME = 1;

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

        // Load the preferences from an XML resource.
        addPreferencesFromResource(R.xml.preferences);

        // Handle readme.
        Preference preference = findPreference(getText(R.string.preference_key_read_me));
        preference.setOnPreferenceClickListener(new OnPreferenceClickListener() {

            @Override
            public boolean onPreferenceClick(Preference preference) {
                showDialog(DIALOG_READ_ME);
                return true;
            }
        });

        // show the current value in the settings screen
        for (int i = 0; i < getPreferenceScreen().getPreferenceCount(); i++) {
            initSummary(getPreferenceScreen().getPreference(i));
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        getPreferenceScreen().getSharedPreferences().registerOnSharedPreferenceChangeListener(this);

    }

    @Override
    protected void onPause() {
        super.onPause();
        getPreferenceScreen().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this);
    }

    @Override
    public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
        updatePreferences(findPreference(key));
    }

    @Override
    protected Dialog onCreateDialog(int id) {
        Dialog dialog = null;

        switch (id) {
        case DIALOG_READ_ME:
            dialog = createReadMeDialog();
            break;
        default:
            Log.w(TempWidgetExtensionService.LOG_TAG, "Not a valid dialog id: " + id);
            break;
        }

        return dialog;
    }

    /**
     * Create the readme dialog.
     * 
     * @return The dialog.
     */
    private Dialog createReadMeDialog() {
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setMessage(R.string.preference_option_read_me_txt).setTitle(R.string.preference_option_read_me)
                .setIcon(android.R.drawable.ic_dialog_info)
                .setPositiveButton(android.R.string.ok, new OnClickListener() {

                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.cancel();
                    }
                });
        return builder.create();
    }

    private void initSummary(Preference p) {
        if (p instanceof PreferenceCategory) {
            PreferenceCategory cat = (PreferenceCategory) p;
            for (int i = 0; i < cat.getPreferenceCount(); i++) {
                initSummary(cat.getPreference(i));
            }
        } else {
            updatePreferences(p);
        }
    }

    private void updatePreferences(Preference p) {
        if (p instanceof ListPreference) {
            ListPreference listPref = (ListPreference) p;
            p.setSummary(listPref.getEntry());
        }
    }
}

Java Source Code List

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