@Override
public boolean onCreateOptionsMenu(Menu menu) {
 menu.add(Menu.NONE, MENU1_ID, Menu.NONE, "Back").setIcon(android.R.drawable.ic_menu_revert)
 .setIntent(new Intent(this, SecondActivity.class));
 menu.add(Menu.NONE, MENU2_ID, Menu.NONE, "Save").setIcon(android.R.drawable.ic_menu_save)
 .setIntent(new Intent(this, ThisWeek.class));
 menu.add(Menu.NONE, MENU3_ID, Menu.NONE, "Help").setIcon(android.R.drawable.ic_menu_help);
 
 return super.onCreateOptionsMenu(menu);
}
 
@Override
public boolean onOptionsItemSelected(MenuItem item) {
 if (item.getItemId() == MENU1_ID){
  
 }else if(item.getItemId()== MENU2_ID){
  Toast.makeText(ListCheck3.this, "Save", Toast.LENGTH_SHORT).show();
 
 }else if(item.getItemId()== MENU3_ID){
  
 }
 
 return super.onOptionsItemSelected(item);
 }

옵션 메뉴 생성해서
옵션 메뉴 클릭시 토스트 뜨게 설정했는데 이상하게 안뜨네요;;