public boolean onTouchEvent(MotionEvent event){
  int action = event.getAction();
  switch(action){
 
  case MotionEvent.ACTION_DOWN:  
  case MotionEvent.ACTION_MOVE:

  final float a = event.getX();
  final float b = event.getY();
 
  if(Math.sqrt(Math.pow(a - 160, 2) + Math.pow(b - 100, 2)) <= RADIUS){
   myPaint1.setColor(Color.RED);
  }
  else if(Math.sqrt(Math.pow(a - 160, 2) + Math.pow(b - 140, 2)) <= RADIUS){
   myPaint2.setColor(Color.RED);
  }
  else if(Math.sqrt(Math.pow(a - 160, 2) + Math.pow(b - 160, 2)) <= RADIUS){
   myPaint3.setColor(Color.RED);

  여기에 메소드를 추가해서 마지막원 클릭시 Paint[] paint1이 사라지고Paint[] paint2가 생성되도록 하고 싶어요


 

  if(Math.sqrt(Math.pow(a - 100, 2) + Math.pow(b - 140, 2)) <= RADIUS){
  myPaint1.setColor(Color.RED);
  }
  else if(Math.sqrt(Math.pow(a - 120, 2) + Math.pow(b - 160, 2)) <= RADIUS){
  myPaint2.setColor(Color.RED);
  }
  else if(Math.sqrt(Math.pow(a - 140, 2) + Math.pow(b - 180, 2)) <= RADIUS){
  myPaint3.setColor(Color.RED);
  } 
  return true;
 
  case MotionEvent.ACTION_UP:
  case MotionEvent.ACTION_CANCEL:
 
   break;
  }
 
  return(true);
 }

 @Override
 public void onDraw(Canvas canvas){
  int width = canvas.getWidth();
  int height = canvas.getHeight();
  canvas.drawRect(0, 0, width, height, backgroundPaint);
 
  int[] start1 ={160,160,160};
  int[] end1 = {100,120,140};
   
Paint[] paint1 = {backgroundPaint, myPaint1, myPaint2, myPaint3};
  
  for (int i=0; i<start1.length; i++) {
 
   canvas.drawCircle(start1[i],end1[i],RADIUS,paint1[i]);
  
 
  int[] start2 = {100,120,140};
  int[] end2 = {140,160,180};
  
 Paint[] paint2 = {backgroundPaint, myPaint7, myPaint8, myPaint9};
 
  for (int a=0; a<start2.length; a++) {
  
    canvas.drawCircle(start2[i],end2[i],RADIUS,paint2[i]);
  
  }
 
   invalidate();
 }
 
 }
}

 

위에 코드가 더 있긴했는데 별로 필요가 없을거 같아 생략했습니다.

코드 중간에 질문 적어놨는데 어떤 메소드를 쓰면 좋을지 잘 모르겠어요 ㅜㅜ 아직 자바초보라서요 ....ㅜ

많은 도움 주세욤~