Firebase 用户：isEmailVerified 返回 false

Question

我正在开发一个使用 Firebase 身份验证的 Android 应用。创建新用户后，我将发送一封验证电子邮件。

Firebase.auth.currentUser?.let {user ->
        user.sendEmailVerification().addOnCompleteListener {verificationTask ->
            if(verificationTask.isSuccessful){
                _verificationSuccess.value = true
            } else {
                _verificationError.value = verificationTask.exception
            }
        }
    }

在我的清单中，我添加了一个 Intent 过滤器，当用户尝试打开验证链接时它会打开我的应用。

<intent-filter>
                <action android:name="android.intent.action.VIEW"/>
                <category android:name="android.intent.category.DEFAULT"/>
                <category android:name="android.intent.category.BROWSABLE"/>
                <data
                    android:host="test-project.firebaseapp.com"
                    android:scheme="https"/>
            </intent-filter>

问题是，当链接打开我的应用程序时，电子邮件未经过验证。我有这个总是返回 false 的验证

if(Firebase.auth.currentUser.isEmailVerified){
                        //Email verified
                    } else {
                        throw Exception("Email not verified")
                    }

只有在网络浏览器中打开验证链接时，验证才会返回 true。如何在我的应用内验证电子邮件？

Answer 1

通过应用您拥有的意图过滤器，您已经告诉 Android 您将处理所有以https://test-project.firebaseapp.com 为目标的网络请求。既然您的应用程序已经限制浏览到此 URL，您现在需要代表用户向服务器发出请求。

默认情况下，当您向用户发送电子邮件验证时，他们将收到一封包含如下链接的电子邮件：

https://<PROJECT_ID>.firebaseapp.com/__/auth/action?mode=verifyEmail&oobCode=<VERIFICATION_CODE>&apiKey=<API_KEY>&lang=<LANGUAGE>

注意：可以使用custom action handlers 自定义这些链接，或者您可以使用dynamic links，这样您就不会拦截所有指向https://test-project.firebaseapp.com 的内容。

由于用户可能希望在浏览器中访问您应用的网站，因此您应该使您的意图过滤器更具体地处理电子邮件操作。

<intent-filter android:label="@string/filter_view_handle_action_code">
    <action android:name="android.intent.action.VIEW" />
    <category android:name="android.intent.category.DEFAULT" />
    <category android:name="android.intent.category.BROWSABLE" />
    <data android:scheme="https"
          android:host="test-project.firebaseapp.com"
          android:pathPrefix="/__/auth/action" />
</intent-filter>

免责声明：我没有测试过以下方法是否有效，但理论上应该可以。

如果截取这样的URL，需要在onCreate方法中处理：

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    Intent intent = this.getIntent();
    if (intent.hasCategory(android.intent.category.BROWSABLE)) {
        // intent came from browser
        Uri data = intent.getData();
        String mode = data.getQueryParameter("mode");
        String oobCode = data.getQueryParameter("oobCode");
        if (mode != "verifyEmail" || oobCode == null) {
            Log.i("MyActivity", "Started with unexpected browsable intent");
            return;
        }

        handleVerifyEmailActionCode(oobCode);
    }
}

private handleVerifyEmailActionCode(String oobCode) {
    String email = null;
    FirebaseAuth.getInstance().checkActionCode(oobCode)
        .onSuccessTask( actionCodeResult -> {
            if (actionCodeResult.getOperation() != ActionCodeResult.VERIFY_EMAIL) {
                throw new UnsupportedActionCodeOperationException(actionCodeResult.getOperation());
            }

            email = actionCodeResult.getInfo().getEmail();
            return FirebaseAuth.getInstance().applyActionCode(oobCode);
        })
        .addOnCompleteListener( applyActionCodeTask -> {
            if (!applyActionCodeTask.isSuccessful()) {
                Exception ex = applyActionCodeTask.getException();
                // TODO: Handle exceptions
                Toast.makeText(getApplicationContext(), "Failed to verify email. " + ex.getMessage(), Toast.LENGTH_SHORT).show();
                return;
            }

            // email verified successfully!
            // do something interesting
            Toast.makeText(getApplicationContext(), email + " was verified!", Toast.LENGTH_SHORT).show();
            FirebaseUser user = FirebaseAuth.getCurrentUser(); // WARN: May not have finished initializing yet?
            if (user != null && user.getEmail() == email) {
                user.reload()
                    .addOnFailureListener(ex -> {
                        Log.e(MyActivity.class, "Failed to refresh user token: " + ex.getMessage());
                    });
            } else {
                Log.i(
                    MyActivity.class,
                    user == null
                        ? "User wasn't signed in, skipping reload"
                        : "User email mismatch, skipping reload"
                );
            }
    });
}

/**
 * Custom exception to be used when a OOB code's `ActionCodeResult.Operation`
 * doesn't match what it was expected to be.
 * 
 * @see https://firebase.google.com/docs/reference/android/com/google/firebase/auth/ActionCodeResult#constant-summary
 */
public class UnsupportedActionCodeOperationException extends Exception { 
    protected int operation;

    public UnsupportedActionCodeOperationException(int operation) {
        super("The ActionCodeResult.Operation value of " + operation + " is not supported");
        this.operation = operation;
    }

    public int getOperation() {
        return this.operation;
    }
}