public OnClickListener btnClick = new OnClickListener() {
  public void onClick(View v) {
   ((Button) v).setBackgroundColor(0xffffaaff); // 버튼의 백그라운드 색을 바꿔서 글자가 나오게 함 편법으로;;
   
   if (isPressed == false){
    baba1.setText(((TextView) v).getText().toString());
    before_value = ((TextView) v).getText().toString();
    before_button = (Button) v;
    isPressed = true;
    flag = 1;
    System.out.println("Current Button : " + v);
   }else if (isPressed == true) {
    baba2.setText(((TextView) v).getText().toString());
    System.out.println("Before Button : " + before_button);
    System.out.println("Current Button : " + v);
    if(!(before_value.equals(((TextView) v).getText().toString()))){
     try { Thread.sleep(800); } catch (InterruptedException e) {}
     before_button.setBackgroundColor(0xffffdbc1);
     ((Button) v).setBackgroundColor(0xffffdbc1);
    }
    else {
     bingo++;
    }
    isPressed = false;
    count++;
    countTV.setText("COUNT = " + count);
   }
  }
 };