[android help] How to set dyanamic generated textview's background on clicking

How to set backgroound drawable, when clicking a dyanamic created button like this :

I am using above code to create dyanamic button and track click of specific button :

for (int i = 1; i<8; i++) {

    if(i==7)
    {
        btn = custom.myButton(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT), null, i+30, "...");
        btn.setTag(i);
        linear_paging.addView(btn);
    }
    else
    {
        btn = custom.myButton(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT), null, i+30, ""+i);
        btn.setTag(i);
        linear_paging.addView(btn);
    }


    btn.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub

            Toast.makeText(Earned_New.this, v.getTag()+" clicked", Toast.LENGTH_SHORT).show();
            v.setBackgroundDrawable(getResources().getDrawable(R.drawable.black_rounded_background));
        }
    });
}

.

stackoverflow.comm