what is wrong with this assignment?

I have defined a class XX like this:

   public class XX extends RelativeLayout {
     protected static final boolean DEBUG = true;
 
     public XX(Context context) {
     super(context);
     // TODO Auto-generated constructor stub
     }
 
     public XX(Context context, AttributeSet attrs) {
     super(context, attrs);
     if (DEBUG)
         Log.i(this.getClass().getSimpleName(), " ->2"
             + Thread.currentThread().getStackTrace()[2].getMethodName());
     //getAttributes(context, attrs);
 
     }
 
     public XX(Context context, AttributeSet attrs, int defStyle) {
     super(context, attrs, defStyle);
     if (DEBUG)
         Log.i(this.getClass().getSimpleName(), " ->3"
             + Thread.currentThread().getStackTrace()[2].getMethodName());
     //getAttributes(context, attrs);
 
     }
 
 }
 

and in my code I write:

RelativeLayout v = (RelativeLayout) this.findViewById(R.id.switch_TCMyTB);
 XX x = (XX) v;  //<----- crashes here
 

but it crashes with the assignment. I assume the because XX extends View I can just assign the view (RelativeLayout) to an XX object.

But it crashes. What is wrong with the assignment?

EDIT:

I changed extends View to extends RelativeLayout. Also changed View v to RelativeLayout v.
But I still get a classCastException..???? Why?

While

RelativeLayout r = (RelativeLayout) v; 
 

certainly works fine.

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