Flutter: Unhandled Exception: ServicesBinding.defaultBinaryMessenger was accessed before the binding was initialized

Flutter: Unhandled Exception: ServicesBinding.defaultBinaryMessenger was accessed before the binding was initialized

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Hello Guys. from the last many time I have faced Flutter: Unhandled Exception: ServicesBinding.defaultBinaryMessenger was accessed before the binding was initialized this error in a flutter.

so finally I have decided to make a solution to this error. so without wasting your time let’s start this article.

What is Issue:

I am Facing This issue at my Stacktrace.

[VERBOSE-2:ui_dart_state.cc(148)] Unhandled Exception: ServicesBinding.defaultBinaryMessenger was accessed before the binding was initialized.
If you're running an application and need to access the binary messenger before `runApp()` has been called (for example, during plugin initialization), then you need to explicitly call the `WidgetsFlutterBinding.ensureInitialized()` first.
If you're running a test, you can call the `TestWidgetsFlutterBinding.ensureInitialized()` as the first line in your test's `main()` method to initialize the binding.
#0      defaultBinaryMessenger.<anonymous closure> (package:flutter/src/services/binary_messenger.dart:73:7)
#1      defaultBinaryMessenger (package:flutter/src/services/binary_messenger.dart:86:4)
#2      MethodChannel.binaryMessenger (package:flutter/src/services/platform_channel.dart:140:62)
#3      MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:314:35)
<asynchronous suspension>
#4      MethodChannel.invokeMapMethod (package:f<…>

What is Solution

Question: How to Solve Flutter: Unhandled Exception: ServicesBinding.defaultBinaryMessenger was accessed before the binding was initialized ?
Answer: Main Reason behind this error is when you are awaiting on main() method. So, the solution would be:

Solution 1 :

Flutter: Unhandled Exception: ServicesBinding.defaultBinaryMessenger was accessed before the binding was initialized

Main Reason behind this error is when you are awaiting on main() method. So, the solution would be:

void main() {
  // add this line at void main()
  WidgetsFlutterBinding.ensureInitialized(); 

  runApp(
    MaterialApp(...),
  );
}

So, solution is to add WidgetsFlutterBinding.ensureInitialized(); at main.dart’s void main() method.

Solution 2 :

just add this line in main.dart

WidgetsFlutterBinding.ensureInitialized();

your code seems like

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  return runApp(MultiProvider(
    providers: [
      ChangeNotifierProvider.value(
        value: AppState(),
      )
    ],
    child: MyApp(),
  ));
}

Here is Git Issue #47033

So, Guys both solutions are worked for me. let me know in the comment section if it is worked for you as well.

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Milan Dhameliya is an Information Technology Engineer. By profession, he is a Full Stack developer with knowledge of multiple back-end platforms (e.g., PHP, Node.js, Python) and frontend Flutter frameworks.

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