Dynamically change view inside view in Android

Question

I have this RelativeView with 3 radiobuttons on top. I want to change the bottom part of the view when the user clicks on one of the buttons.

The blue part is the pl

Answer 1

• use findViewById to get a reference to each RadioButton
• Register an OnClickListener using setOnClickListener on each RadioButton
• Inside your OnClickListener callback, load a different background

Answer 2

I kinda found the answer:

layout = (RelativeLayout)findViewById(R.id.rellayout);
LayoutInflater layoutInflater = (LayoutInflater)this.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
layout.addView(layoutInflater.inflate(R.layout.gegevens_verzekeringen, group, false), 1 );

This loads the view over the parent xml. I want it to load it over just the 'body' part (the blue part in the picture)

I declared the body like this:

body = (RelativeLayout)findViewById(R.id.body);

But when i do body.addView(layoutInflater.inflate(R.layout.gegevens_verzekeringen, group, false), 1);

It sais java.lang.IndexOutOfBoundsException: index=1 count=0

How can i fix this?

Edit: Got it:

body.addView(layoutInflater.inflate(R.layout.gegevens_verzekeringen, null));