An Explanation of My Recent "Self Destruct" Application

An Explanation of My Recent “Self Destruct” Application

Self Destruct” is simply an application I made for fun, as a proof of concept. This application demonstrates a way to create an application that is able to “destroy” itself, preventing it from running until it is uninstalled, and then reinstalled later. I’d like to personally thank HandlerExploit for giving me a hint about how to do this (he mentioned that he found the trick in the provisioning code). HandlerExploit uses a similar technique in his application, “iBrick Proof of Concept”. As soon as the user opens the application, it removes it’s main class from the Dalvik package manager, preventing itself from being able to run again. The only way to run the application again after opening it is to uninstall the application, and reinstall it. This application serves no real purpose other than to demonstrate an interesting trick, and it is not malicious in any way. Please note that after running the application, it’s icon will remain in the launcher, although you won’t be able to open it. Uninstalling the application will remove the icon. I’d release the entire source code for this application, but really, the only part that actually matters is the part that removes the class from Dalvik and prevents the application from running again. Interestingly, this application requires absolutely no permissions, at all in order to do this. In case you are interested in how I did this, here is the source code for the main class in the project:

package com.dylantaylor.selfdestruct;
import android.app.Activity;
import android.content.ComponentName;
import android.content.pm.PackageManager;
import android.os.Bundle;

public class Main extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        PackageManager pm = getPackageManager(); ComponentName name = new ComponentName(this, Main.class);
        pm.setComponentEnabledSetting(name, PackageManager.COMPONENT_ENABLED_STATE_DISABLED, 0);
    }
}

Yes, I realize that this application serves no real purpose, but it’s just something interesting that I made for fun. If you don’t want it, don’t download it. Otherwise, have fun! 🙂

P.S. Do whatever you want with that source code, it’s virtually worthless to me anyways.

Sound Added to "Simple Dice"!

Sound Added to “Simple Dice”!

I added sound to “Simple Dice” when you roll the dice. The sound played is a modified, low quality version of Mike Koenig’s “Shake and Roll Dice Sound”. The file takes up less than 10 additional kilobytes, and the sound is only played if the “Media volume” is not muted, to avoid disturbing others.  I also plan on adding the sound to “Dice Betting” when it is released. The sound truly makes the application more realistic feeling and more interesting. Expect to see the changes on GitHub and the Android market shortly!

UPDATE: The sounds are now in the git repository, and the new version is up on the market!

Introducing “Simple Dice”

Introducing “Simple Dice”

This isn’t quite the dice game that I’m currently working on, but I liked the animation I made so much in the other game (“Dice Betting”) that I just had to release an Android application with just the dice images and the animation. Simply tap anywhere on the screen in order to roll the dice. Dice rolls are random. Simple Dice will definitely be released under version 3 of the GNU General Public license, and the source will be available online as soon as I get a chance to upload it. I will update this post with the link to the source code once it’s online. Until then, check it out in the Android market! It’s 100% free! Also, the entire application takes up only a measly 24KB! 😉

UPDATE: The source code is now available on GitHub! Check it out! 🙂

Working on a New Simple Dice Game

Working on a New Simple Dice Game

I’ve been working on creating a basic dice game for Android with animation, rules, betting, and more! The game is currently a work in progress, but I’m really excited to release it! The animation works wonderfully, and the interface, although very unfinished is already starting to look polished, especially in the game’s menus. For now, the game is simply called “Dice Betting”, and yes, I realize how lame and generic that sounds, but I might end up changing the name of the game before it is released. Similar to “Find the Mouse”, I’ll probably end up open sourcing this game (under the GNU General Public License, of course), although it isn’t even remotely close to being released yet. The game will have a built-in statistics tracking system, and the rolling of the dice will be completely animated. Right now, the animation I have done looks really cool, and I’m incredibly anxious to publicly release this. Check back soon! 🙂

Find The Mouse Improvements Complete!

Find The Mouse Improvements Complete!

I finished making the changes to “Find The Mouse”, and the new code is up on github. I’m already in the process of signing and uploading the new version to the Android market. You should be able to download it very soon! The new version automatically advances to the next level after you successfully find the mouse, it keeps track of your winning streak and current score, and the user interface feels much nicer. Enjoy! 🙂

UPDATE: The new version is now up on the market! Check it out!

Pssst… Planned Improvements for "Find The Mouse"

Pssst… Planned Improvements for “Find The Mouse”

I realize that “Find The Mouse” isn’t that much fun yet. I’m working on implementing a feature to keep track of scoring. For each round successfully completed, you will get one point plus one point for every click left. The game will also keep track of how many games were won in a row. Keep in mind that this game was never originally designed to be very fun, it was meant to be an example to teach (very) basic Android programming. These upcoming features are simply the result me giving into peer pressure and trying to make the game more enjoyable. Keep in mind that this is an open source project and anyone is welcome to contribute code if they would like to see it in the game. The feature is done as far as coding, I just have to work on the new layout.

Introducing “Find The Mouse”, a Basic Open Source Android Game!

Introducing “Find The Mouse”, a Basic Open Source Android Game!
So, a friend of mine asked me to show them how to make a basic Android game, which resulted in me coding up something simple for him. “Find The Mouse” is the result of this coding. This entire game was started and finished in around 20 minutes today, and the counter was added in later. All of the artwork in the game is public domain artwork found on sites like clker.com. The card background was heavily modified in order to reduce file size and make it look nicer on mobile screens. The object of the game is to find the mouse hidden behind one of five cards. You have three chances to find the mouse before you lose. The game is, as I stated earlier, incredibly simple, yet somewhat useful to someone who is learning to code for the Android operating system. The entire source code as well as all resources are available on GitHub, and I will probably end up putting this on the Android market soon, so that all of you without the Android SDK or the time to compile source code can play with this. This game will definitely be 100% free, and I have no intention of ever charging for it. The version on the market will likely have an AdMob advertisement in it, however, the version on github will not if you have the time to compile it and run it yourself. I am releasing this project under version 3 of the GNU General Public License, and all original artwork created by me in relation to this project is released to the public domain. You may copy, edit, modify and redistibute this project as long as you follow the terms of version 3 of the GPL. Enjoy! The project’s source code can be found on this GitHub repository. 😉

P.S. Hitting the Search button or the Menu button resets the game.