Bearer token request http flutter

token might not be set by the time it invokes http.get. Change it to

    String token = await Candidate().getToken();    final response = await http.get(url, headers: {      'Content-Type': 'application/json',      'Accept': 'application/json',      'Authorization': 'Bearer $token',    });    print('Token : ${token}');    print(response);

So that it is for sure set with right value.

Also you can use this method

String token = await Candidate().getToken();final response = http.get(url,        headers: {HttpHeaders.contentTypeHeader: "application/json", HttpHeaders.authorizationHeader: "Bearer $token"});

The problem is that you assign your token in a different way.

When you do this await asyncFunction(); Dart will wait till it is complete. But, when you do like this asyncFunction().then((value) => print) this tells Dart that it can continue executing your code, and when that asyncFunction is completed than print the value.

This is what happens on your case with

Candidate().getToken().then((value) {      token = value;    });

Here is a example, execute it on Dart Pad.

Future.dart