Passing HashMap using intent returns null, why?

Question

I'm trying to pass a hashmap from one activity to another using intent. I already found a solution which should work. I implemented Serializable in class Player.

private HashMap<Integer, Player> players = new HashMap<Integer, Player>();
players.put(1, new Player("name"));
Intent intent = new Intent(this, GameActivity.class);
intent.putExtra("players", players);
startActivity(intent);

But when I want to get the hashmap in the other activivity it returns null.

Intent intent = getIntent();
players = (HashMap<Integer, Player>) intent.getSerializableExtra("player");

What am I doing wrong? Any suggestions? I just can't find my mistake.

Answer 1

I believe there is a typo here:

Intent intent = getIntent();
players = (HashMap<Integer, Player>) intent.getSerializableExtra("player");

Did you mean:

getSerializableExtra("players");