http://schemas.android.com/apk/res/android"出现灰色，选择是错误 . “>
Why is this so? This is happening suddenly when I tried to add a new xml file in drawable.The xmlns:android="http://schemas.android.com/apk/res/android" is appearing grey and select is an error.
This error is now happening everywhere, xmlns uri is not registered and etc. errors are also appearing, I checked for some answers and their suggestions didn't work
我正在使用appcompat 7 21.0.2，android studio release candidate 1.这种情况突然发生，我无法让它消失http://i.stack.imgur.com/Rmxc7.png
