I need to use timeout if post request not working so, I write below code:
class APIService {
static var client = http.Client();
static Future<bool> login(LoginRequestModel model) async {
Map<String, String> requestHeaders = {
'Content-Type': 'application/json',
};
var url = Uri.http(Config.apiURL, Config.loginAPI);
try {
final response = await client
.post(
url,
headers: requestHeaders,
body: jsonEncode(model.toJson()),
)
.timeout(const Duration(seconds: 5));
print("response:");
print(response);
if (response.statusCode == 200) {
//SHARED
await SharedService.setLoginDetails(loginResponseJson(response.body));
return true;
} else {
return false;
}
} on TimeoutException catch (e) {
// handle timeout
return false;
}
}
But never end await client.post method waiting althouth I add timeout. How can I solve this ?
You can try this:
import 'package:http/http.dart' as http;
import 'package:http/io_client.dart' as http;
final body = { 'email': email, 'password': password };
final client = http.Client();
http.Response res;
try {
res = await client
.post(
url,
headers: requestHeaders,
body: jsonEncode(model.toJson()),
.catchError((e) {
// SocketException would show up here, potentially after the timeout.
})
.timeout(const Duration(seconds: 5));
} on TimeoutException catch (e) {
// Display an alert, no internet
} catch (err) {
print(err);
return null;
}
Related
List is always empty even though body has contents. I am new to flutter so bare with me if this is basic. I am wanting to get back a list of station data I am coming from a c# background so forgive me if am missing something simple the test string body has the items and can see the items when i debug
class HttpService {
final String url = "url hidden";
final String host = 'url hidden';
final String apiSegment = "api/";
// ignore: non_constant_identifier_names
void login(email, password) async {
try {
Map<String, String> body = {
'username': email,
'password': password,
};
Map<String, String> headers = {'Content-Type': 'application/json'};
final msg = jsonEncode(body);
Response response =
await post(Uri.parse("$url/Login"), headers: headers, body: msg);
if (response.statusCode == 200) {
var data = jsonDecode(response.body.toString());
print(data['jwtToken']);
print('Login successfully');
final prefs = await SharedPreferences.getInstance();
await prefs.setString('jwtToken', data['jwtToken']);
List<Stations> stationData = await getStationData('11');
var test = stationData;
} else {
print('failed');
}
} catch (e) {
print(e.toString());
}
}
Future<List<Stations>> getStationData(String stationId) async {
final prefs = await SharedPreferences.getInstance();
final String? token = prefs.getString('jwtToken');
const String path = 'Station/GetAllStationData';
final uri = Uri.parse('$url/api/$path')
.replace(queryParameters: {'stationId': stationId});
List<Stations> stationData = <Stations>[];
try {
Response res = await get(uri, headers: {
'Content-Type': 'application/json',
'Accept': 'application/json',
// 'Authorization': 'Bearer $token',
});
if (res.statusCode == 200) {
var body = jsonDecode(res.body);
var body2 = body.toString();
stationData = body
.map(
(dynamic item) => Stations.fromJson(item),
)
.toList();
} else {
throw "Unable to retrieve posts.";
}
} catch (e) {
print(e.toString());
}
return stationData;
}
}
I am calling my function from the same class
List<Stations> stationData = await getStationData('11');
Data from body
Actually the problem is you are returning the data after the end of try catch.
Try this
Future<List<Stations>> getStationData(String stationId) async {
final prefs = await SharedPreferences.getInstance();
final String? token = prefs.getString('jwtToken');
const String path = 'Station/GetAllStationData';
final uri = Uri.parse('$url/api/$path')
.replace(queryParameters: {'stationId': stationId});
try {
Response res = await get(uri, headers: {
'Content-Type': 'application/json',
'Accept': 'application/json',
// 'Authorization': 'Bearer $token',
});
if (res.statusCode == 200) {
var body = jsonDecode(res.body);
final stationData = List<Stations>.from(body.map((item) => Stations.fromJson(item))); // made some changes
return stationData;
} else {
throw "Unable to retrieve posts.";
}
} catch (e) {
rethrow;
}
}
I hope this will help you
Is there any example that I can refer to about Common class/method for flutter API calls(GET,POST,...) in flutter? I have handled all the API requests in a common method in react native, I'm not sure how to implement it in flutter.
you have to call getRequest using url parameter
Future<Response> getRequest(String url) async {
Response response;
try {
response = await _dio.get(url,
options: Options(headers: {
HttpHeaders.authorizationHeader:
'Bearer $accessToken'
}));
print('response $response');
} on DioError catch (e) {
print(e.message);
throw Exception(e.message);
}
return response;
}
here is the post method
Future<Response> posRequestImage(String url, data) async {
try {
response = await _dio.post(
url,
data: formData,
options: Options(headers: {
HttpHeaders.authorizationHeader:
'Bearer $accessToken'
}),
);
if (response.statusCode == 200) {
return response;
}
print('post response $response');
} on DioError catch (e) {
print(e.message);
throw Exception(e.response?.statusMessage);
}
return response;
}
You can create a class to handle it. For example, this is my class to handle all service for user model
import 'package:http/http.dart' as http;
class UserService {
var baseUrl = URL.devAddress;
Future<User> getUser() async {
final response = await http.get(
Uri.parse(baseUrl + "user/1")
);
if (response.statusCode == 200) {
final data = json.decode(response.body);
return data
} else {
throw Exception("Failed");
}
}
}
Future<void> getUser(String username) async {
Uri uri = Uri.parse('https://example.com');
try {
Map<String, dynamic> params = new HashMap();
params['username'] = username;
final response = await client.post(uri,
body: jsonEncode(params),
);
print("response ${response.body}");
} on FetchDataException {
throw FetchDataException("No Internet connection");
}
}
I try to refresh token and retry request on 401 error, but can not understand how to do it by right way
This is a recreation from what I remember so there can be typo and small errors maybe.
I hope you get an idea what I am trying to do here.
import 'package:http/http.dart' as http;
class APIUtility {
Uri uri;
String path, method;
var body;
var headers;
APIUtility({ #required this.path, #required this.method, this.body}) {
this.uri = Uri.parse("http://localhost:4000/api/${this.path}");
this.headers = {'Content-Type': 'application/json'};
}
Future request({ bool useToken = true }) async {
http.Response response;
if ( useToken ) { this.header['token'] = await getAccessToken(); }
try {
response = await // call api with http package with correct path, method and body
if ( useToken && response.statusCode == 401 ) return await _refreshTokenAndRequest();
else return jsonDecode(response.data);
}
catch (e) {
print(e);
return null;
}
}
_refreshTokenAndRequest() async {
String accessToken = await getAccessToken();
String refreshToken = await getRefreshToken();
var body = {'access_token': accessToken, 'refresh_token': refreshToken};
http.Response response = await http.post("${this.baseUrl}/api/auth/refresh", body: body);
if (response.statusCode == 200 || response.statusCode == 201) {
saveAccessToken(response.body['access_token']);
saveRefreshToken(response.body['refresh_token']);
return await request();
} else {
// Logout user from app
// Delete all database, token and all user info and show login screen;
return null;
}
}
}
I want to send form data in flutter using the HTTP package. Getting the error:FormatException: Unexpected character (at character 1)
I/flutter (30465):
I am sending the form data in the HTTP post request.
Future<void> authethicate(
String schoolName,
String password,
) async {
try {
final url = 'https://yobimx.com/citykey/api/users/login';
final response = await http.post(url, body: {
'email': 'usamashafiq199#outlook.com',
'password': '123',
}, headers: {
"Content-Type": "application/x-www-form-urlencoded",
});
print(
json.decode(response.body),
);
final responseData = json.decode(response.body);
} catch (error) {
print(error);
}
}
I have to use a multipart request for request. Thanks for your help.
Future<void> authethicate(
String schoolName,
String password,
) async {
try {
final url = Uri.parse('https://yobimx.com/citykey/api/users/login');
Map<String, String> requestBody = <String, String>{
'email': 'usamashafiq199#outlook.com',
'password': '123'
};
var request = http.MultipartRequest('POST', url)
..fields.addAll(requestBody);
var response = await request.send();
final respStr = await response.stream.bytesToString();
print(
jsonDecode(respStr),
);
print("This is the Status Code$respStr");
var encoded = json.decode(respStr);
print(encoded['status']);
print('This is the userId${encoded['data']['user_id']}');
} catch (error) {
print(error);
}
}
When using workmanager: ^0.2.3 I have been able to do some work in the background but I can't send data to the sever using the http package in the background. It simply doesn't happen when it gets to the api call.
This is what I've written in main:
void callbackDispatcher() {
Workmanager.executeTask((task, inputData) async {
switch (task) {
case simpleTaskKey:
await sendUnsentDataToServerIfOffline(inputData);
break;
}
return Future.value(true);
});
}
void sendDetailsAPIFromWorker(
List<Details> detailsToSent, Map<String, dynamic> inputData) async {
List<TDetails> tDetails = [];
detailsToSent.forEach((detail) => tDetails.add(TDetails(
serviceTime: detail.serviceTime,
fromStopTime: detail.fromStopTime,
toStopTime: detail.toStopTime,
submitType: detail.submitType,
status: detail.status,
travelledDistance: 0.0)));
SendDetails sendDetail = SendDetails(
userToken: inputData['token'],
missionId: inputData['service_id'],
details: tDetails);
Map<String, String> requestHeaders = {
'Content-type': 'application/json',
'Accept': 'application/json'
};
try {
final url = '${inputData['base_url']}$kAPISubmitMissionTransportURL';
try {
final response = await http.post(url,
headers: requestHeaders, body: json.encode(sendDetail.toJson()));
if (json.decode(response.body)['Status'] == 1) {
detailsToSent.forEach((detail) => DBHelper.deleteStopTransportData(
kTransportDetailsTableName,
inputData['service_id'],
detail.serviceDetailId));
List<int> ids = [];
await detailsToSent
.forEach((detail) => ids.add(detail.serviceDetailId));
print('ids to to set send: $ids');
await DBHelper.setDetailSent(
kTransportDetailsTableName, ids, inputData['service_id']);
}
} catch (error) {
}
} catch (error) {
print(error);
}
}