Preview layout with merge root tag in Intellij IDEA/Android Studio

Question

Let\'s imagine we are developing compound component based on LinearLayout. So, we create class like this:

public class SomeView extends LinearLayout {
    public         


        

Answer 1

There is a new parentTag tools attribute (added in Android Studio 2.2) that you can use to specify the layout type for a merge tag, which will make the layout render correctly in the layout editor preview.

So using your example:

Note: Both android:layout_width and android:layout_height must be specified in order for the layout to display properly in the editor.