Android :: Moving To Specific Activity After Pressing Keypad?

I want to specify in code to move to specific activity after pressing back button on android keypad how I can accomplish this. Now I ot the solution to my prob onBackPressed() works after 1.6 version for previous versions we need use:
public boolean onKeyDown(int keyCode, KeyEvent event) method
My code for this solved prob is

@Override public boolean onKeyDown(int keyCode, KeyEvent event) {
if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.CUR_DEVELOPMENT && keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
// Take care of calling this method on earlier versions of
// the platform where it doesn't exist. onBackPressed(); }
return super.onKeyDown(keyCode, event);
} //@Override public void onBackPressed() {
// This will be called either automatically for you on 2.0
// or later, or by the code above on earlier versions of the
// platform.
Intent i=new Intent(AgesWebViewIndex.this,TabCls.class);
i.putExtra("age", "agepage");
startActivity(i);
return;
}