How to add a button control to an android xml view at runtime?

Question

I have an android xml layout, main.xml. I would like to add controls to this layout at runtime (I would like to add a series of additional linear layouts that contain button

Answer 1

You can do this quite easy by setting an id on the layout on which you want to add views to. Say your main.xml look like this:

Lets assume that you want to add your additional views to the LinearLayout with id id/container. In your onCreate method you could retrieve that object for later use:

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mContainer = (ViewGroup)view.findViewById(R.id.container);
}

Now you are all set to add other views to your container ViewGroup:

LinearLayout theButtons = getButtons()
mContainer.addView(theButtons);

In the getButtons method you need to create your LinearLayout containing the buttons you need. Either you do this programmatically or by inflating a view defined in an XML file. See LayoutInflater.inflate.