Develop Reference

google_sign_in Flutter plugin always returns null serverAccessCode

I have the current workflow for my authentication
User signs in via google OAuth2
User is then given a server_auth_code which they send to my backend authentication
The auth code is validated on the back end and users is sent a JWT
I had this all working in raw Java with the Android SDK, but Flutter seemed a lot nicer. But now when using the google_sign_in plugin on android, I am unable to retrieve the serverAuthCore anymore, this plugin just wants to return null the entire time.
I Am using the client ID that's specified for Android, however, I tested the WebApplication that's auto-generated by google too but that's the same issue (Null serverAutHCode)
This is the code that I am currently using:
/// Provides the `GoogleSignIn` class
import 'package:google_sign_in/google_sign_in.dart';
class GoogleLoginPage extends StatefulWidget {
final String name = "Logging in with google.";
late GoogleSignIn _googleSignIn;
GoogleLoginPage() : super() {
_googleSignIn = GoogleSignIn(
scopes: ['https://www.googleapis.com/auth/userinfo.email',
'https://www.googleapis.com/auth/userinfo.profile'],
serverClientId: "XX-XXX.apps.googleusercontent.com"
);
}
Future<void> fetchAuthToken() async {
try {
var response = await _googleSignIn.signIn();
log(response?.serverAuthCode ?? "No server auth code");
_googleSignIn.signOut();
} catch (error) {
print("ERR");
print(error);
}
}
#override
State<GoogleLoginPage> createState() => GoogleLoginState();
}
The output of this code is: [log] No server auth code
The question:
Am I doing something wrong? As mentioned this works 100% on my java project using the google play services SDK so I know it's nothing to do with my google console configurations.

Okay so I figured out the issues:
It appears that by default the google login plugin for flutter comes on an older version (If I remember correctly it was 20.0.5)
I Simply changed the version to the latest version:
'com.google.android.gms:play-services-auth:20.2.0'
You can do this by editing the project's build.gradle (In IntelliJ you open build.gradle and click "Open for editing in the android studio" in the top right, from there you need to find the gradle file for google_sign_in, and change the import there, remember to click sync in the top right of android studio before you close out of it)
And I began to receive my serverAuthCode as normal, cheers!

getting a payment failed unexpected error in razorpay in react native ios and android

I am integrating a razorpay payment gateway in my react native app
. whenever I'm trying to open a razorpay checkout UI its first open a pop up with a loader and after few secods its gives an error payment failed unexpected error with error code 1
.
below is my razorpay checkout UI code
var options = {
description: "Credits towards consultation",
image: "https://i.imgur.com/3g7nmJC.png",
currency: "INR",
key: "xxxxxxxxxxxxxxxx",
amount: "100", //`${amount}`,
name: "Gulb",
//order_id: order_id, //Replace this with an order_id created using Orders API.
theme: { color: "#53a20e" },
};
RazorpayCheckout.open(options)
.then(async (response) => {
console.log("this is payment id", response);
alert("Payment Successfull");
}.catch((error) => {
// handle failure
alert(`${error.description}`);
console.log("this is ", error);
});
also I am getting proper order_id from server and still it shows a same error
for ios it shows - payment failed unexpected error
for android it shows - no appropriate payment method found

I also faced a similar issue while integrating razorpay on my react-native app. But I simply regenerated my key id and key secret and re-ran my app again. The issue magically disappreared.
I hope you solved your problem. But leaving this here in case someone else in the future needs any help.

Why Firebase is unable to get PlayGames AuthCode and pass it into its Credential?

To begin with, I'm working on a Unity Game where I'm authenticating user when the game starts. My build environment is android. I'm using Firebase authentication for Google Play Games Services to authenticate user.
When the game starts in my android device or emulator, it is able to authenticate Play Games Services as well as able to connect with Firebase (I'm getting analytics data). However, when I pass the PlayGames AuthCode into Firebase.Auth Credentials, it stops executing the code (I've debug log for it). It does not throw any error in LogCat except
Firebase | server_auth_code
I tried searching web for different issues, but nothing. I checked my keys in player setting, firebase settings, OAuth 2.0 credentials on my Google API console and even check keys from my Google Play Console (which I'm not using at this stage). I have even checked my test users email addresses in Game Services and tried multiple google play games account. But issue still persist.
I'm using similar script in my other unity project where authentication works like a charm. I tried to use same script here and ended up with this issue: here. However, I solved it by removing all the packages and re-importing them into unity and changed my call functions in the script. Now, I'm stuck at this issue.
Here is cs file:
using GooglePlayGames;
using GooglePlayGames.BasicApi;
using UnityEngine.SocialPlatforms;
using System.Threading.Tasks;
public class SetFirebase : MonoBehaviour
{
string authCode;
void Start()
{
PlayGamesClientConfiguration config = new PlayGamesClientConfiguration.Builder().
RequestServerAuthCode(false /* Don't force refresh */).Build();
PlayGamesPlatform.InitializeInstance(config);
PlayGamesPlatform.Activate();
Social.localUser.Authenticate((bool success) =>
{
if (success)
{
authCode = PlayGamesPlatform.Instance.GetServerAuthCode();
Debug.Log("PlayGames successfully authenticated!");
Debug.Log("AuthCode: " + authCode);
}
else
{
Debug.Log("PlayGames SignIn Failed");
}
});
Firebase.FirebaseApp.CheckAndFixDependenciesAsync().ContinueWith(task =>
{
var dependencyStatus = task.Result;
if (dependencyStatus == Firebase.DependencyStatus.Available)
{
Debug.Log("Firebase Ready!!!");
RunFirebase();
}
else
{
Debug.LogError(System.String.Format("Could not resolve all Firebase dependencies: {0}", dependencyStatus));
}
});
}
private void RunFirebase(){
Firebase.Auth.FirebaseAuth auth = Firebase.Auth.FirebaseAuth.DefaultInstance;
Debug.Log("init firebase auth ");
Firebase.Auth.Credential credential = Firebase.Auth.PlayGamesAuthProvider.GetCredential(authCode);
Debug.Log(" passed auth code ");
auth.SignInWithCredentialAsync(credential).ContinueWith(task =>
{
if (task.IsCanceled)
{
Debug.LogError("SignInOnClick was canceled.");
return;
}
if (task.IsFaulted)
{
Debug.LogError("SignInOnClick encountered an error: " + task.Exception);
return;
}
Firebase.Auth.FirebaseUser newUser = task.Result;
Debug.LogFormat("SignInOnClick: User signed in successfully: {0} ({1})", newUser.DisplayName, newUser.UserId);
});
}
}
My LogCat executes everything till "init firebase auth" but does not execute "passed auth code" so I know there is some issue in passing the credentials. It also does not run anything inside auth.SignInWithCredentialAsync(credential).
Any help or suggestion would be highly appreciated. Thank you.

There are two things I may suggest:
1) Replace ContinueWith with ContinueWithOnMainThread. This is a Firebase Extension that will guarantee that your logic runs on the main Unity thread (which tends to resolve many Unity specific issues). I go into more detail about that here.
2) Your logic may have a race condition between the Authenticate callback and the CheckAndFixDependenciesAsync continuation. These will not necessarily run in the order that you see them in your logic.
If I were building this system, I might prefer using Coroutines and a custom yield instruction:
class Authenticate : CustomYieldInstruction
{
private bool _keepWaiting = true;
public override bool keepWaiting => _keepWaiting;
public Authenticate(Social.ILocalUser user) {
user.Authenticate((bool success)=>{
/* old authentication code here */
_keepWaiting = false;
});
}
}
Then in a coroutine have something like:
private IEnumerator InitializeCoroutine() {
/* old authentication code */
// I'm ignoring error checking for now, but it shouldn't be hard to figure in.
// I'm mostly going from memory now anyway
// start both authentication processes in parallel
var authenticate = new Authenticate(Social.localUser);
var firebaseDependenciesTask = FirebaseApp.CheckAndFixDependenciesAsync();
// wait on social
yield return authenticate;
// wait on Firebase. If it finished in the meantime this should just fall through
yield return new WaitUntil(()=>firebaseDependenciesTask.IsComplete);
RunFirebase();
}
This way my logic looks roughly synchronous whilst still maintaining the asynchronosity (spell check claims that I made up that word) of the systems you're depending on and you avoid threading related issues that arise when using ContinueWith.
Let me know if that helps!
--Patrick

ionic 3 geo-location not working for the second time

I have a problem using Geolocation on Android device.
I create an Ionic 3 application.
I use Geolocation ( [https://ionicframework.com/docs/native/geolocation/ 13]).
I use the sample code provided there.
The problem is that, the code works in Browser but whenever I upload it on an Android device, it does not work.
When I start the app on device the alert for location permission is prompted.
I press Allow.
Then in the android tray an icon appears that says “Searching for GPS”.
After timeout expires I got the error for timeout and no location.
The strange think is this:
If I close my app, then open google maps ( or other app using gps position ) and reopen my app works as it should.
I don’t know what to do.
The permissions are fine :
and everything was installed properly.
Can anyone help please?

i got it actually i have to pass apikey with that like
<script src="http://maps.googleapis.com/maps/api/js?key=YOUR_KEY"></script>
in the index page
without this key it sometime works but not sure everytime.
Note : this key is only generated when you have a valid gmail a/c (by providing DOB/CreditCard nos) although its free .

try this, it should work
ionic cordova run android --prod
--prod makes production build apk

import { LocationAccuracy } from '#ionic-native/location-accuracy';
declare var navigator
Above
#Component
watchPosition() {
this.locationAccuracy.request(this.locationAccuracy.REQUEST_PRIORITY_HIGH_ACCURACY).then(
() => {
var options = {
timeout: 500,
maximumAge: Infinity
};
this.watch = navigator.geolocation.watchPosition((data) => {
let latlng: LatLng = new LatLng(data.coords.latitude, data.coords.longitude);
}, (error) => {
console.log("error watch", error)
}, options);
}
}, error => {
alert('Error requesting location permissions' + JSON.stringify(error))
});
}
}

Ionic 2 application doesn't start on device

I am trying to test my application written in Ionic 2 framework on actual device. The problem is that whenever I try to call my node.js API from device, the call does not even get there. Everything works fine on computer with ionic server command, but I cannot run it on my phone when I use ionic cordova run android. I can run sample applications that do not use my API with no errors.
My API code that allows any origin is following:
app.all('/*', function(req, res, next) {
var origin = req.headers.origin;
res.setHeader('Access-Control-Allow-Origin', origin);
res.header("Access-Control-Allow-Credentials", "true");
res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE');
res.header("Access-Control-Allow-Headers", "Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With");
next();
});
And my code on client side that calls API is:
checkLogin(): Observable<boolean>{
return this.http
.get(`http://localhost:8080/user/loginstatus`, { headers: this.getHeaders(), withCredentials: true})
.map((res: Response) => {
if(res.json()==true){
return true;
}
else{
return false;
}
});
}
Basicly I would like to check if user is logged in so I can set the proper root page in the beggining of the app start. Please help. Thank you in beforehand.