How to change default Android's Desktop application?

I hear that the Android's desktop is an application that I can ch开发者_运维问答ange. I'm searching for some information about how to do that.

I guess you mean when you press the home button you want to have your app there instead of the default home screen? And do you mean on a non-rooted phone?

I use an intent filter for that, i.e. I want my activity to start on phone boot-up and be the default home screen.

<intent-filter>
    <action android:name="android.intent.action.MAIN"/>
    <category android:name="android.intent.category.LAUNCHER"/>
    <category android:name="android.intent.category.HOME"/>
    <category android:name="android.intent.category.DEFAULT"/>
</intent-filter>

On a regular phone, the user will get an option to choose between your app and the default home screen though at first, although he can mark a checkbox then to always choose this app as the default screen then - but your app cannot force the user to do that.

In the market you can search for Home Replacements. Once you install one and press the home button you will get a Choose Dialog, that let's you pick from the default Home and the newly installed one.

The current Home Screen that I use is Launcher Pro.