为何Firestore中不显示注册用户的邮箱与全名？

我在Firebase Firestore中无法查看到注册用户的邮箱和全名，已经卡了好几个小时，求解决办法。注册代码如下：

if(valid){
    //user reg process
    mAuth.createUserWithEmailAndPassword(emailReg.getText().toString(),passwordReg.getText().toString()).addOnSuccessListener(new OnSuccessListener<AuthResult>() {
        @Override
        public void onSuccess(AuthResult authResult) {
            userID = mAuth.getCurrentUser().getUid();
            Toast.makeText(xRegister.this, "Registration Complete", Toast.LENGTH_SHORT).show();
            DocumentReference df = mStore.collection("Users").document(userID);

            Map<String,Object> userInfo = new HashMap<>();
            userInfo.put("FullName", fullNameReg.getText().toString());
            userInfo.put("Email",emailReg.getText().toString());
            userInfo.put("Student I.D.",studentId.getText().toString());
            //access level of admin an user
            userInfo.put("isUser","1");

            df.set(userInfo).addOnSuccessListener(new OnSuccessListener<Void>() {
                @Override
                public void onSuccess(Void unused) {
                    Log.d(TAG,"onsuccess: profile stored!" + userID);
                }
            }).addOnFailureListener(new OnFailureListener() {
                @Override
                public void onFailure(@NonNull Exception e) {
                    Log.d(TAG1,"failure" + e.toString());
                }
            });

            startActivity(new Intent(getApplicationContext(),xLogin.class));
            finish();
        }
    }).addOnFailureListener(new OnFailureListener() {
        @Override
        public void onFailure(@NonNull Exception e) {
            Toast.makeText(xRegister.this, "Error Signing Up", Toast.LENGTH_SHORT).show();
        }
    });
}

排查建议 #

• 检查Firestore安全规则：默认规则可能限制了数据读取，开发阶段可临时设置开放规则（上线前务必修改为严格权限）：

rules_version = '2';
service cloud.firestore {
  match /databases/{database}/documents {
    match /{document=**} {
      allow read, write: if true;
    }
  }
}

• 查看失败日志：打开Logcat，搜索TAG1的日志，确认df.set()是否有失败信息，比如权限不足、字段为空或网络问题。

• 验证输入值有效性：在userInfo.put()前添加日志，确认输入控件是否获取到内容：

Log.d(TAG, "FullName: " + fullNameReg.getText().toString());
Log.d(TAG, "Email: " + emailReg.getText().toString());

如果输出为空，检查控件ID是否绑定正确，或输入是否为空。

• 调整异步操作顺序：df.set()是异步操作，当前代码在写入未完成时就跳转页面，可能导致写入中断。将startActivity和finish移至df.set()的onSuccess回调内：

df.set(userInfo).addOnSuccessListener(new OnSuccessListener<Void>() {
    @Override
    public void onSuccess(Void unused) {
        Log.d(TAG,"onsuccess: profile stored!" + userID);
        // 确认写入完成后再跳转
        startActivity(new Intent(getApplicationContext(),xLogin.class));
        finish();
    }
}).addOnFailureListener(new OnFailureListener() {
    @Override
    public void onFailure(@NonNull Exception e) {
        Log.d(TAG1,"failure" + e.toString());
    }
});

• 可靠获取用户ID：使用authResult.getUser().getUid()替代mAuth.getCurrentUser().getUid()，避免因当前用户状态未同步导致ID获取错误：

userID = authResult.getUser().getUid();

内容的提问来源于stack exchange，提问作者naodaddy_