Translations:Android Training/Building a Simple User Interface/16/en
Instead of using specific sizes for the width and height, the
"wrap_content" value specifies that the view should be only as big as needed to fit the contents of the view. If you were to instead use
"match_parent", then the
EditText element would fill the screen, because it would match the size of the parent
LinearLayout. For more information, see the Layouts guide.