xmlns:android="http://schemas.android.com/apk/res/android" this line is marked as error in Linear Layout

Question

In my XML file, i made a few LinearLayout's, and for some reason I get an error on line : xmlns:android="http://schemas.android.com/apk/res/android". It is marked with red (Error) and the error log says : "Unexpected namespace prefix "xmlns" found for tag LinearLayout"

Does somebody know what that means?

Solution

1) Only use that in the outermost layout that you have. It is sufficient to specify once. Remove all the other occurrences of it.

see Unexpected namespace prefix "xmlns" found for tag LinearLayout