Firebase的onCompletion捆绑包不发送…？

Question

问题是：我的Firebase从一个正常工作的文档获取信息（log.d和Toast显示它正确获取信息）

    public void getUserInfo(String id)
{
    DocumentReference docRef = db.collection("users").document(id);
    docRef.get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
        @Override
        public void onComplete(@NonNull Task<DocumentSnapshot> task) {
            if (task.isSuccessful()) {
                DocumentSnapshot document = task.getResult();
                if (document.exists()) {
                    Log.d(TAG, "DocumentSnapshot data: " + document.getData());
                    Toast.makeText(ConnexionActivity.this, "DocumentSnapshot data: " + document.getData(),
                            Toast.LENGTH_SHORT).show();

                    Intent intent = new Intent(ConnexionActivity.this,GameMenu.class);
                    Bundle bundle = new Bundle();
                    bundle.putString("USERID", document.getId());
                    bundle.putString("USERNAME", document.get("lastname").toString() + " " + document.get("firstname").toString());
                    bundle.putString("SCORE", document.get("score").toString());
                    intent.putExtras(bundle);
                    startActivity(intent);
                } else {
                    Log.d(TAG, "No such document");
                }
            } else {
                Log.d(TAG, "get failed with ", task.getException());
            }
        }
    });
}

但是，在创建GameMenu activity时，包（savedInstanceState）为空，并且尝试获取该信息会给我带来异常。

    @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_game_menu);
    ((TextView)findViewById(R.id.usernameView)).setText(savedInstanceState.getString("USERNAME"));
    ((TextView)findViewById(R.id.scoreView)).setText(savedInstanceState.getString("SCORE"));
}

非常感谢快速的帮助，我们在这里有点慌乱：（

Answer 1

看来SavedInstanceState返回Null。不是专家，但这对我有用：

// Add intent and bundle to your class
private Intent;
private Bundle;

// Initialize them in your onCreate method
intent = getIntent();
bundle = intent.getExtras();

// And get your data using bundle
bundle.getString("KEY")

希望能解决您的问题：）