Android Activity, how to override manifest's a

问题:

I'm coding a custom Activity class (using it as a super class for my other Activity classes) where it's overriding many default functionalities. One of these functionalities I want is orientation handling, and while I can do it, it requires

android:configChanges="orientation"

in the manifest. Is there a way to enforce the same thing as the line above, but in java code?

回答1:

You'll still need to include the attribute in the XML but you can handle it in Java too; see my blog post here: http://c0deattack.wordpress.com/2010/12/25/dealing-with-screen-orientation-changes-manually/

Edit: You cannot set the configChanges attribute programmatically. I guess it's to do with the way an Activity is created. They're created from the XML first and then the overridden methods in your activity implementation are invoked. There's nothing in the API that lets you change the configChanges attribute.