Firebase Authentication in Flutter - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to initialize Firebase in a Flutter app.

Flutter

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.[1]();
  runApp(MyApp());
}

Drag options to blanks, or click blank then click option'

AstartApp

BinitFirebase

CinitializeApp

DlaunchApp

Attempts:

3 left

💡 Hint

Common Mistakes

Using a method name that does not exist in Firebase.

Forgetting to call ensureInitialized before Firebase initialization.

The method initializeApp() is used to initialize Firebase before running the app.

2fill in blank

medium

Complete the code to sign in a user with email and password.

Flutter

final userCredential = await FirebaseAuth.instance.[1]('[e-mail]', 'password123');

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AsignInWithEmailAndPassword

BregisterUser

CloginUser

DauthenticateUser

Attempts:

3 left

💡 Hint

Common Mistakes

Using a method that does not exist in FirebaseAuth.

Confusing sign in with registration methods.

The method signInWithEmailAndPassword signs in a user using email and password.

3fill in blank

hard

Fix the error in the code to sign out the current user.

Flutter

await FirebaseAuth.instance.[1]();

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AsignIn

Blogout

ClogOutUser

DsignOut

Attempts:

3 left

💡 Hint

Common Mistakes

Using non-existent methods like 'logOutUser' or 'logout'.

Using signIn instead of signOut.

The correct method to sign out a user is signOut().

4fill in blank

hard

Fill both blanks to create a new user with email and password.

Flutter

final userCredential = await FirebaseAuth.instance.[1]('[2]', 'mypassword');

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AcreateUserWithEmailAndPassword

BsignInWithEmailAndPassword

[e-mail]

[e-mail]

Attempts:

3 left

💡 Hint

Common Mistakes

Using signIn method instead of createUser.

Using an invalid email string.

Use createUserWithEmailAndPassword to register a new user, and provide a valid email like [e-mail].

5fill in blank

hard

Fill all three blanks to send a password reset email.

Flutter

await FirebaseAuth.[1].sendPasswordResetEmail(email: '[2]');

print('[3]');

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Ainstance

[e-mail]

CPassword reset email sent

DcurrentUser

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect FirebaseAuth instance accessor.

Forgetting to provide the email parameter.

Not printing a confirmation message.

Use instance to access FirebaseAuth instance, provide the user's email, and print a confirmation message.