Send json data flutter post - flutter

I want to send in this form in http.post
but I can't manage to encode my data in my body.
I have an error:
[ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception:
Converting object to **
> an encodable object failed: Instance of 'MappedListIterable<User, Set>'
> E/flutter ( 7489): #0 _JsonStringifier.writeObject (dart:convert/json.dart:688:7)

Related

How to get Method call with request parameter in Flutter

How can I use the get method with the request parameter and header in a flutter, I have used the https://pub.dev/packages/http for calling Get API.
response=await _client.get(Uri.http(url, payload),headers: header);
Error:- [ERROR:flutter/lib/ui/ui_dart_state.cc(177)] Unhandled
Exception: FormatException: Invalid radix-10 number (at character 1)
E/flutter ( 2603): //demo.test/text/public/user/user_list
E/flutter ( 2603): ^
The problem here may be payload that you are trying to send, get method in the http library does not support such a thing. So use post method instead if you need to send data to the server. I had the same issue some time ago and I found that creators of this library are very strict on purposes of each of the methods.

msgpack: RangeError when decoding data

In the link below, I was trying to decode data encoded by msgpack but this error happens:
Uncaught RangeError: Offset is outside the bounds of the DataView
Link:
https://repl.it/#programmeruser/weblinux#main.sh

Error Code 2147500037 on Attempt for Bluetooth Connection in Windows Phone 8

I am attempting to establish an app-to-app bluetooth connection programmatically. Please see the following code snippet for the said purpose:
StreamSocket streamSocket = await PeerFinder.ConnectAsync(peerInformation);
I get this error whenever I try to do so:
An exception of type `System.Runtime.InteropServices.COMException` occurred
in mscorlib.ni.dll and wasn't handled before a managed/native boundary
HRESULT E_FAIL has been returned from a call to a COM component.
ERROR CODE: 2147500037
Please advise on how to go around with this error.

JSON Value failed

I am fetching data from server into my iPhone app.
But it shows the exception
-JSONValue failed. Error trace is: (
"Error Domain=org.brautaset.JSON.ErrorDomain Code=4 \"Valid fragment, but not JSON\" UserInfo=0x6e9b460 {NSLocalizedDescription=Valid fragment, but not JSON}"
Any Solution.
Check your data should be in this format use http://jsonformatter.curiousconcept.com/ to check the json format

zend header already send problem

sometimes i got error when i include your class(AuthnetCim.class) in my controller.
the error is as below:-
Fatal error: Uncaught exception
‘Zend_Controller_Response_Exception’
with message ‘Cannot send headers;
headers already sent in
/home/newwebsi/public_html/B4BPHP/public/include/AuthnetCIM.class.php,
line 1′ in
/home/newwebsi/public_html/B4BPHP/library/Zend/Controller/Response/Abstract.php:321
Stack trace: #0
/home/newwebsi/public_html/B4BPHP/library/Zend/Controller/Response/Abstract.php(148):
Zend_Controller_Response_Abstract->canSendHeaders(true)
#1 /home/newwebsi/public_html/B4BPHP/library/Zend/Controller/Action/Helper/Redirector.php(226):
Zend_Controller_Response_Abstract->setRedirect(‘/B4BPHP/public/…’,
302) #2
/home/newwebsi/public_html/B4BPHP/library/Zend/Controller/Action/Helper/Redirector.php(370):
Zend_Controller_Action_Helper_Redirector->_redirect(‘/B4BPHP/public/…’)
#3 /home/newwebsi/public_html/B4BPHP/library/Zend/Controller/Action/Helper/Redirector.php(453):
Zend_Controller_Action_Helper_Redirector->setGotoUrl(‘index/login’, Array) #4
/home/newwebsi/public_html/B4BPHP/library/Zend/Controller/Action.php(68
in
/home/newwebsi/public_html/B4BPHP/library/Zend/Controller/Response/Abstract.php
on line 321
when i remove this class i do not get any error anywhere
Please, help me to resolve this error
Make sure you do not have any characters before <?php in AuthnetCIM.class.php.
Ouput is sent to the browser when the file AuthnetCIM.class.php is looked-up/included.
Check for spaces, BOM before the opening PHP tag, echoing/printing statements.
In other words check for anything that might be causing the script to output data.