android - Xmlns:android 问题

Question

For Every Layout xml file contains this instruction at First Layout (xmlns:android="http://schemas.android.com/apk/res/android") once is enough or we need to put every Layout in the xml file. Like this

 <LinearLayout 
        xmlns:android="http://schemas.android.com/apk/res/android"
        ------------
        --------->
        <Textview
           ---------/>
         <LinearLayout 
            xmlns:android="http://schemas.android.com/apk/res/android"
            ------------
            --------->  
            <ListView
                --------------
                ---------------/>
         </LinearLayout>
</LinearLayout>

thanks

Answer 1

for each xml file, in the root layout you have to set this property:

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

NOTE: Only in the root container layout of each XML file not in all containers.

Hope you got my point.