在注册用户中保存性别选择

Question

我应该保存用户在注册时所做的选择，然后根据用户选择的性别使用它来创建一个自定义标记以在谷歌地图上使用。所以我需要记住所做的选择。我该怎么做？

注册活动

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_register);

    Toolbar toolbar = findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    getSupportActionBar().setTitle("Register");
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);

    username = findViewById(R.id.username);
    email = findViewById(R.id.email);
    password = findViewById(R.id.password);
    btn_register = findViewById(R.id.btn_register);

    firebaseAuth = FirebaseAuth.getInstance();

    // When register is clicked check if fields are empty and if password is longer than 6 characters and call register method
    btn_register.setOnClickListener(v -> {
        String txt_username = username.getText().toString();
        String txt_email = email.getText().toString();
        String txt_password = password.getText().toString();

        if (TextUtils.isEmpty(txt_username) || TextUtils.isEmpty(txt_email) || TextUtils.isEmpty(txt_password)) {
            Toast.makeText(RegisterActivity.this, "All fields are required", Toast.LENGTH_SHORT).show();
        }
        else if (txt_password.length() < 6) {
            Toast.makeText(RegisterActivity.this, "Password must be at least 6 characters", Toast.LENGTH_SHORT).show();
        }
        else {
            register(txt_username, txt_email, txt_password);
        }
    });
}

private void register(final String username, final String email, final String password) {
    // If register task is successful add a reference to Users
    firebaseAuth.createUserWithEmailAndPassword(email, password)
            .addOnCompleteListener(task -> {
                if (task.isSuccessful()) {
                    FirebaseUser firebaseUser = firebaseAuth.getCurrentUser();
                    assert firebaseUser != null;
                    String userid = firebaseUser.getUid();

                    reference = FirebaseDatabase.getInstance().getReference("Users").child(userid);

                    HashMap<String, String> hashMap = new HashMap<>();
                    hashMap.put("id", userid);
                    hashMap.put("username", username);  
                    hashMap.put("search", username.toLowerCase());
                    hashMap.put("address", "To be added");
                    hashMap.put("gender", "");

Answer 1

我不知道你的完整用例。你可以用几种方法来保存选择。

1. 如果在同一活动中需要此值，则为局部变量