Use contentObserver in manifest file

I am making an android app in which I want to get开发者_如何学JAVA the call logs of all incoming, outgoing and missed calls and i am using content observer for this but i don't know that how to use content observer in manifest file. can anyone help me how to do this... Thanks

Content Observer are never implemented in Manifest file Dy run when they got fired..

Content observers are not supported in AndroidManifest.xml files. If in doubt whether some feature is supported or not, you can consult this page: The AndroidManifest.xml File