Android Manifest parsing during installation

I want to learn the installation steps in android. I was just wondering how开发者_运维百科 the manifest file is being parsed and validated. Is it possible to prevent the application from getting installed except for the ones i write or sign. My initial thoughts say we should have custom tags in the manifest file(dont know how far is it possible) Any views ??

The format of the Android Manifest is fully described in the dev guide.

I don’t understand your other question.