Replacing Android's Launcher App before compilation

I want to have my own Launcher Application for Android

in other words , I want my own Application to run directly after booting , instead of the Launcher app as I am not running Android on a Mobile phone , and I don't want Android's Home GUI

also I want to change the app in the source code , before compilation

I have tried to Simply replace files under "/packages/apps/Launcher" with my HelloWorld App then running this command "mmm packages/apps/Launcher" but It didn't work

So any book/tutorial/advice that covers this point开发者_如何学编程 ?? Thanks in advance

Android was designed to be so modular that it supports what we want without any tweaks !! maybe little tweaks in your program only

Android doesn't go for a specific Launcher app in predefined location and run itin fact you can have multiple Home Screen installed .. each App identifies itself somewhere in it's code that it is a Home App Then Android in booting decides which home App to load Demo @ http://developer.android.com/resources/samples/Home/index.html , which is included in the SDK samples too

This should not present any great difficulty to you, Android has provisions for this and there are many third party launchers available. There is an example at developer.android.com that will show you exactly how to implement and deploy your home screen replacement app: Home - Home | Android