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Toggle Utilities for Android Phones

[ Toggle Screen Timeout - Toggle Brightness ]

Like many other smart phones android phones have many knows and dials, but to access them you have to go through multiple menus. Some of them I need quite frequently, and fortunately there are applications that toggle just one setting. Some of the ones I use toggle GPS, Wifi and Bluetooth on and off.

However, I also frequently like to change the brightness of the screen and stop the screen from turning off in some cases (in partiuclar if I use the map on a sunny day). As I could not find any applications that do that I wrote my own, which can be downloaded from the Android market, or below: Toggle Screen Timeout and Toggle Brightness.

Those are the two first applications I wrote for android, and it took me a while to get all the required information I needed to write them. In order to simplify other developers life you can download the complete source code here.

  Toggle Screen Timeout

Download Source:ToggleScreen.tar.gz
Download Application:ToggleScreen.apk
Icon:Time-Machine by Babasse
ToggleBrightness.java:
/** 
 * ToggleScreen: Android application to toggle screen timeouts.
 * Copyright 2009 by Claudio Fleiner
 * http://www.mensus.net/phone/toggle.shtml
 *
 * 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, version 3 of the License
 *
 * 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 net.mensus.togglescreen;

import android.app.Activity;
import android.content.ContentResolver;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.widget.Toast;
import static android.provider.Settings.System.SCREEN_OFF_TIMEOUT;

public class ToggleScreen extends Activity
{
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        try {
            SharedPreferences settings=
                getSharedPreferences("net.mensus.togglescreen", MODE_PRIVATE);
            ContentResolver c=getContentResolver();
            int val=android.provider.Settings.System.getInt(getContentResolver(),
                                                            SCREEN_OFF_TIMEOUT);
            if(val==-1 || val==0) {
                int nval=settings.getInt("ScreenTimeout",60000);
                if(nval<=0) nval=60000;
                String t;
                if(nval==30000) t="1/2 min";
                else if(nval>=60000) t=""+(nval/60000)+" min";
                else t=""+(nval/1000)+" sec";
                Toast.makeText(this,
                               "Screen Timeout set to "+t,
                               Toast.LENGTH_LONG).show();
                android.provider.Settings.System.putInt(getContentResolver(),
                                                        SCREEN_OFF_TIMEOUT, nval);
            } else {
                android.provider.Settings.System.putInt(getContentResolver(),
                                                        SCREEN_OFF_TIMEOUT, -1);
                Toast.makeText(this, "Disabled Screen Timeout", Toast.LENGTH_LONG).show();
                SharedPreferences.Editor editor = settings.edit();
                editor.putInt("ScreenTimeout",val);
                editor.commit();
            }
        } catch(Throwable er) {
            Toast.makeText(this, "Error "+er.getMessage(), Toast.LENGTH_LONG).show();
        } finally {
            finish();
        }
    }
}

  Toggle Screen Brightness

Download Source:ToggleBrightness.tar.gz
Download Application:ToggleBrightness.apk
Icon:Orbz-Sun by Arrioch
ToggleBrightness.java:
/** 
 * ToggleBrightness: Android application to toggle screen brightness.
 * Copyright 2009 by Claudio Fleiner
 * http://www.mensus.net/phone/toggle.shtml
 *
 * 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, version 3 of the License
 *
 * 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 net.mensus.togglebrightness;

import android.app.Activity;
import android.content.ContentResolver;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.IHardwareService;
import android.os.ServiceManager;
import android.widget.Toast;
import static android.provider.Settings.System.SCREEN_BRIGHTNESS;

public class ToggleBrightness extends Activity
{
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        try {
            SharedPreferences settings=
                getSharedPreferences("net.mensus.togglebrightness", MODE_PRIVATE);
            ContentResolver c=getContentResolver();
            int val=android.provider.Settings.System.getInt(
                    getContentResolver(), SCREEN_BRIGHTNESS);
            IHardwareService hardware=
                IHardwareService.Stub.asInterface( ServiceManager.getService("hardware"));
            if(val==255) {
                int nval=settings.getInt("ScreenBrightness",128);
                if(nval<=0) nval=128;
                if(nval>255) nval=255;
                Toast.makeText(this,
                               ""+(nval*100/255)+"% Brightness",
                               Toast.LENGTH_LONG).show();
                android.provider.Settings.System.putInt(getContentResolver(),
                                                        SCREEN_BRIGHTNESS, nval);
                if(hardware!=null) hardware.setScreenBacklight(nval);
            } else {
                android.provider.Settings.System.putInt(getContentResolver(),
                                                        SCREEN_BRIGHTNESS, 255);
                Toast.makeText(this, "Maximum Brightness", Toast.LENGTH_LONG).show();
                SharedPreferences.Editor editor = settings.edit();
                editor.putInt("ScreenBrightness",val);
                editor.commit();
                if(hardware!=null) hardware.setScreenBacklight(255);
            }
        } catch(Throwable er) {
            Toast.makeText(this, "Error "+er.getMessage(), Toast.LENGTH_LONG).show();
        } finally {
            finish();
        }

    }
}

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