[Android] AndroidManifest.xml出现问题

xmlns:android="http://schemas.android.com/apk/res/android

报 URI is not registered ( Setting | Project Settings | Schemas and DTDs )  问题

解决方案:

 "File > Project Structure > Modules", click "add" and then click "android" and "apply/ok".

 from: http://stackoverflow.com/questions/17511254/android-studio-error-parsing-xml-uri-is-not-registered