Android 动态删除按钮

我有一个按钮，当我按下它时，我想将其删除（而不是使其不可见）。我读到我可以使用layout.removeView(mybutton)但布局是什么？我怎样才能在我的活动中得到它

Button showQuestion;
private void initialize() {
    showQuestion = (Button) findViewById(R.id.bAnswerQuestionShowQuestion);
}
public void onClick(View v) {
    switch (v.getId()) {
        case R.id.bAnswerQuestionShowQuestion:
                showQuestion.setVisibility(View.INVISIBLE);
                //Here i want to delete the button
                question.setVisibility(View.VISIBLE);
                theAnswer.setVisibility(View.VISIBLE);
                answerQuestion.setVisibility(View.VISIBLE);
                showChoices.setVisibility(View.VISIBLE);
                showHint.setVisibility(View.VISIBLE);
            break;
    }
}

see link http://developer.android.com/reference/android/view/View.html#getParent%28%29

ViewGroup layout = (ViewGroup) button.getParent();
if(null!=layout) //for safety only  as you are doing onClick
  layout.removeView(button);