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 ??

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

I don’t understand your other question.