Google authentication with Firebase and Jetpack Compose - firebase

Question

I'm using Kotlin, Android Studio and Jetpack Compose
What I want to do:
After the button click, I would want to register the user using google authentication and firebase
What I've tried to do:
I've tried to follow Firebase Auth Documentation, but it's really hard to understand as it often sends me back to the Google Documentation, which isn't helpful either in the case of Jetpack Compose.
I couldn't find any up to date videos or guides explaining this implementation. It would be awesome if someone could explain how to start with it.

Answer 1

val context = LocalContext.current
val token = stringResource(R.string.default_web_client_id)
val launcherNav = rememberLauncherForActivityResult(
contract = ActivityResultContracts.StartActivityForResult()
) {
navController.navigate(Screen.MainScreen.route)
}
val launcher = rememberLauncherForActivityResult(
contract = ActivityResultContracts.StartActivityForResult(),
) {
val task =
try {
val account = GoogleSignIn.getSignedInAccountFromIntent(it.data)
.getResult(ApiException::class.java)
val credential = GoogleAuthProvider.getCredential(account.idToken!!, null)
FirebaseAuth.getInstance().signInWithCredential(credential)
.addOnCompleteListener { task ->
if (task.isSuccessful) {
}
}
}
catch (e: ApiException) {
Log.w("TAG", "GoogleSign in Failed", e)
}
}
Button(
onClick = {
val gso = GoogleSignInOptions
.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestIdToken(token)
.requestEmail()
.build()
val googleSignInClient = GoogleSignIn.getClient(context, gso)
launcher.launch(googleSignInClient.signInIntent)
}
) {
Text(text = "Sign In")
}