Unexpected namespace prefix "custom" found for tag

<?xml version= "1.0" encoding= "Utf-8"? ><linearlayout xmlns:android= "http://schemas.android.com/apk/res/ Android "              xmlns:custom=" Http://schemas.android.com/apk/res-auto "              xmlns:tools="/http/ Schemas.android.com/tools "              android:orientation=" vertical "              android:layout_width=" Match_parent              " android:layout_height= "Match_parent" >    <fragment        class= " Com.demo.artshell.fragmentdemo.ExampleFragment "        android:id=" @+id/example_fragment "        android:layout_ Width= "Match_parent"        android:layout_height= "match_parent"        custom:label= "@string/example_fragment_ Arguments "        tools:ignore=" Missingprefix "/></linearlayout>

Add:

xmlns:tools= "Http://schemas.android.com/tools"
tools:ignore= "Missingprefix"

Resolve this warning message!

These are the problems that occur in the as tool:

Another article is the problem with the use of eclipse: a workaround

Unexpected namespace prefix "custom" found for tag