使用Kotlin登录Facebook的自定义按钮，但失败

Question

I would like to apply facebook login module by clicking the custom button and acquire access token from facebook, then pass the access token from Facebook to firebase to Login.

When it comes the execution, there has no response from register call back.

I have setup the Facebook Developer App called : JacksonApplication and the application written in Kotlin as below:

Would you please tell me what are other ways I have to implement ?

class JacksonApplication : Application() {

    override fun onCreate() {
        super.onCreate()

        AppEventsLogger.activateApp(this);

        JodaTimeAndroid.init(this);
    }
}

My function :

 callbackManager = CallbackManager.Factory.create()

            LoginManager.getInstance()
            LoginManager.getInstance().registerCallback(callbackManager ,
                    object : FacebookCallback<LoginResult> {
                        override fun onSuccess(loginResult: LoginResult) {
                            println("facebook loginResult : $loginResult")
                            handleFacebookAccessToken(loginResult.accessToken);
                            // App code
                        }

                        override fun onCancel() {
                            // App code
                        }

                        override fun onError(exception: FacebookException) {
                            println("loginResult : ${exception.localizedMessage}")

                            // App code
                        }
                    })

 fun  handleFacebookAccessToken( token : AccessToken) {
        Log.d(TAG, "handleFacebookAccessToken:" + token);

        val credential = FacebookAuthProvider.getCredential(token.getToken());
        mAuth!!.signInWithCredential(credential)
                .addOnCompleteListener(this) { task ->
                    if (task.isSuccessful) {
                        // Sign in success
                        val firebaseUser = mAuth!!.currentUser
                        updateUI(firebaseUser)

                    } else {
                        // Sign in fails
                        val currentUser = mAuth!!.currentUser!!
                        user.register(currentUser.uid)
                    }
                }
    }

My actions :

private fun loginSocial( type : String ) {
        if (type  == "Facebook") {
            println("execute social reg by facebook")
            callbackManager = CallbackManager.Factory.create()

            LoginManager.getInstance()
            LoginManager.getInstance().registerCallback(callbackManager ,
                    object : FacebookCallback<LoginResult> {
                        override fun onSuccess(loginResult: LoginResult) {
                            println("facebook loginResult : $loginResult")
                            handleFacebookAccessToken(loginResult.accessToken);
                            // App code
                        }

                        override fun onCancel() {
                            // App code
                        }

                        override fun onError(exception: FacebookException) {
                            println("loginResult : ${exception.localizedMessage}")

                            // App code
                        }
                    })

        }else if(type  == "Google") {
            println("execute social reg by google")

            val intent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient)
            startActivityForResult(intent, REQUEST_CODE_GOOGLE_SIGN_IN)
            mGoogleApiClient!!.connect()
        }
    }

onActivity Result :

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

    if (requestCode == REQUEST_CODE_GOOGLE_SIGN_IN) {

         progressDialog = ProgressDialog(this )
         progressDialog!!.setMessage(this.resources.getString(R.string.loading))
         progressDialog!!.setCancelable(false)
         progressDialog!!.show()

        val result = Auth.GoogleSignInApi.getSignInResultFromIntent(data)
        if (result.isSuccess) {
            // successful -> authenticate with Firebase
            val account = result.signInAccount
            firebaseAuthWithGoogle(account!!)
        } else {
            // failed -> update UI
            updateUI(null)
            Toast.makeText(applicationContext, "SignIn: failed!",
                    Toast.LENGTH_SHORT).show()
        }
    }else  {
         progressDialog = ProgressDialog(this )
         progressDialog!!.setMessage(this.resources.getString(R.string.loading))
         progressDialog!!.setCancelable(false)
         progressDialog!!.show()


     }
}

Answer 1

Add these lines in onActivityResult()

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

    // Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
    if (requestCode == YOUR_GOOGLE_REQUEST_CODE) {
        val task = GoogleSignIn.getSignedInAccountFromIntent(data)
        try {
            // Google Sign In was successful, authenticate with Firebase
            val account = task.getResult(ApiException::class.java)
            firebaseAuthWithGoogle(account!!)
        } catch (e: ApiException) {
            // Google Sign In failed, update UI appropriately
            Log.w(TAG, "Google sign in failed", e)
            // ...
        }
    } else {
        // Pass the activity result back to the Facebook SDK
        callbackManager.onActivityResult(requestCode, resultCode, data)
    }
}