先把List<>改为ArrayList<>
ArrayList<Good> list=new ArrayList<Good>();
Intent intent = new Intent(MainActivity.this,InfoActivity.class);
intent.putExtra("list", list);
startActivity(intent);
Intent intent = getIntent();
ArrayList<Good> list= (ArrayList<Good>) intent.getSerializableExtra("list");
原文：http://www.cnblogs.com/1426837364qqcom/p/5397979.html