How Does Froyo Display A Dialog Atop The Home Screen?

I upgraded my Nexus One a few days ago with 2.2 (Froyo). This morning when I went to use it I saw a Dialog sitting atop the home/launcher screen notifying me that an update was ava

Solution 1:

You can theme an activity like the dialog, its been there for a while (i think 1.6, maybe even 1.5)

<activityandroid:name=".MyActivity"android:theme="@android:style/Theme.Dialog" />

That would produce what I believe you are seeing.