SNS 로그인(구글)

구글 로그인

 

앱 등록 / API키 발급

developers.google.com/android/guides/client-auth

Authenticating Your Client  |  Google Play services  |  Google Developers

 

Gradle

dependencies {
    implementation 'com.google.android.gms:play-services-auth:19.0.0'
}

 

Google Sign In API / 클라이언트 설정 및 생성

val googleSignInOptions = GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
        .requestIdToken(context.getString(R.string.default_web_client_id))
        .requestEmail()
        .build()

googleSignInClient = GoogleSignIn.getClient(this@Activity), googleSignInOptions)

 

로그인 요청

startActivityForResult(googleSignInClient?.signInIntent, GOOGLE_SIGN_IN)

 

Callback

override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, requestCode, data)

    if(GOOGLE_SIGN_IN == requestCode) {
        try {
            val task = GoogleSignIn.getSignedInAccountFromIntent(data)
            if (task.isSuccessful) {
                val acct = task.getResult(ApiException::class.java)
                // TODO login success acct.idToken
            }
        } catch (e: ApiException) {
            e.printStackTrace()
        }
    }
}