안드로이드 코틀린 / Firebase Google 인증 startactivityforresult deprecated

//공식문서에서 문제 되는 부분

// [START signin]
private fun signIn() {
    val signInIntent = googleSignInClient.signInIntent
    startActivityForResult(signInIntent, RC_SIGN_IN)
}
// [END signin]

https://github.com/firebase/snippets-android/blob/b8f65e9150fe927a5f0473e15e16fa5803189b60/auth/app/src/main/java/com/google/firebase/quickstart/auth/kotlin/GoogleSignInActivity.kt#L49-L54

 

이부분을

 

   // [START signin]
    private fun googleSignIn() {
        val signInIntent = googleSignInClient.signInIntent
        resultLauncher.launch(signInIntent)
    }

    private var resultLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
        if (result.resultCode == Activity.RESULT_OK) {
            // There are no request codes
            val data = result.data

            val task = GoogleSignIn.getSignedInAccountFromIntent(data)
            try {
                // Google Sign In was successful, authenticate with Firebase
                val account = task.getResult(ApiException::class.java)!!
                Log.d(LogTag, "firebaseAuthWithGoogle:" + account.email)
                firebaseAuthWithGoogle(account.idToken!!)

                Toast.makeText(this, "구글 로그인에 성공했습니다.", Toast.LENGTH_SHORT).show()
            } catch (e: ApiException) {
                // Google Sign In failed, update UI appropriately
                Log.d(LogTag, "Google sign in failed", e)

                Toast.makeText(this, "구글 로그인에 실패했습니다.", Toast.LENGTH_SHORT).show()
            }
        }
    }

이렇게 바꿔서 사용 하면 된다.

 

참조 자료: https://stackoverflow.com/questions/62671106/onactivityresult-method-is-deprecated-what-is-the-alternative