The getter 'length' was called on null
10,527
Solution 1
You need to guard against the case when data == null
body: new Center(
child: data == null ? Container() : new ListView.builder(
itemCount: data.length,
itemBuilder: (BuildContext context, int position) {
return new ListTile(
title: new Text('${data[position]['name']}'),
);
}),
),
Solution 2
The reason behind is If you are using a List and trying to get it's length while the list is null. In order to remove the exception is to initialize the List data (in the above code) with some values (Before getting the required values). What I did was just initialized the list with an empty array. like,
List _elements = [];
Comments please.
Solution 3
Answer by ABHIMANGAL MS was perfect for me. We made a list data at the top of our page like:
list data;
This was null obv. We then ran json under it to get our data from an api and populate data with that info. However the page would first load data while empty then make the api call.
Making data: list data = []; removed the error it would throw up for a second before loading the json data. so thank you !!!
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Flutter - 'initialValue == null || controller == null': is not true. error
Author by
Tariq
Updated on September 15, 2022Comments
-
Tariq over 1 year
I trying to retrieve my data from API server and present it in my mobile application using flutter .. but i got error
The getter 'length' was called on null
Any advice plz ... thanks
my code is
import 'package:flutter/material.dart'; import 'package:flutter/services.dart'; import 'dart:core'; import 'dart:convert'; import 'package:http/http.dart' as http; import 'package:json/add.dart'; void main() => runApp(MyApp()); Future<List> getData() async { String url = 'http://192.168.0.55:4000/api/contacts'; http.Response response = await http.get(url); return json.decode(response.body); } class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { SystemChrome.setPreferredOrientations([DeviceOrientation.portraitUp]); return MaterialApp( routes: <String, WidgetBuilder>{ '/Add': (BuildContext context) => new Add(), }, home: HomePage(), ); } } class HomePage extends StatefulWidget { @override HomePageState createState() { return new HomePageState(); } } class HomePageState extends State<HomePage> { List data; void getList() async { this.data = (await getData()); print(data); } @override void initState() { getList(); } Widget build(BuildContext context) { return new Scaffold( appBar: AppBar( centerTitle: true, title: new Text("Chat"), ), body: new Center( child: new ListView.builder( itemCount: data.length, itemBuilder: (BuildContext context, int position) { return new ListTile( title: new Text('${data[position]['name']}'), ); }), ), floatingActionButton: FloatingActionButton( child: Icon(Icons.person_add), onPressed: () { Navigator.of(context).pushNamed('/Add'); }), ); } }Output Console
Performing hot restart... Syncing files to device Android SDK built for x86... Restarted application in 4,410ms. I/flutter (10119): ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════ I/flutter (10119): The following NoSuchMethodError was thrown building HomePage(dirty, state: HomePageState#80635): I/flutter (10119): The getter 'length' was called on null. I/flutter (10119): Receiver: null I/flutter (10119): Tried calling: length I/flutter (10119): I/flutter (10119): When the exception was thrown, this was the stack: I/flutter (10119): #0 Object.noSuchMethod (dart:core/runtime/libobject_patch.dart:50:5) I/flutter (10119): #1 HomePageState.build (package:json/main.dart:59:29) I/flutter (10119): #2 StatefulElement.build (package:flutter/src/widgets/framework.dart:3809:27) I/flutter (10119): #3 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3721:15) I/flutter (10119): #4 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #5 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #6 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11) I/flutter (10119): #7 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #8 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #9 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #10 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4860:14) I/flutter (10119): #11 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #12 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #13 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #14 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #15 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #16 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #17 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #18 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #19 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4860:14) I/flutter (10119): #20 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #21 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #22 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4860:14) I/flutter (10119): #23 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #24 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #25 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4860:14) I/flutter (10119): #26 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #27 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #28 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4860:14) I/flutter (10119): #29 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #30 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #31 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #32 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #33 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #34 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11) I/flutter (10119): #35 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #36 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #37 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #38 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #39 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #40 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #41 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #42 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #43 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #44 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #45 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #46 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #47 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11) I/flutter (10119): #48 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #49 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #50 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #51 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4860:14) I/flutter (10119): #52 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #53 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #54 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #55 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #56 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #57 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #58 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #59 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #60 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4860:14) I/flutter (10119): #61 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #62 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #63 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #64 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #65 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #66 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11) I/flutter (10119): #67 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #68 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #69 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #70 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #71 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #72 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #73 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #74 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #75 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #76 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4860:14) I/flutter (10119): #77 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #78 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #79 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #80 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #81 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #82 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #83 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #84 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #85 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #86 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #87 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #88 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11) I/flutter (10119): #89 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #90 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #91 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #92 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #93 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #94 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #95 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11) I/flutter (10119): #96 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #97 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #98 MultiChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4965:32) I/flutter (10119): #99 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #100 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #101 _TheatreElement.mount (package:flutter/src/widgets/overlay.dart:493:16) I/flutter (10119): #102 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #103 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #104 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #105 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #106 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #107 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11) I/flutter (10119): #108 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #109 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #110 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #111 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #112 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #113 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #114 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #115 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #116 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #117 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4860:14) I/flutter (10119): #118 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #119 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #120 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #121 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #122 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #123 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11) I/flutter (10119): #124 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #125 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #126 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #127 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4860:14) I/flutter (10119): #128 Element.inflateWidget (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #163 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #164 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #165 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #166 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #167 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #168 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #169 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #170 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #171 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #172 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #173 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #174 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #175 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #176 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #177 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #178 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #179 SingleChildRenderObjectElement.mount (package:flutter/src/widgets/framework.dart:4860:14) I/flutter (10119): #180 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #181 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #182 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #183 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #184 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #185 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11) I/flutter (10119): #186 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #187 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #202 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #203 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #204 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #205 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #206 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #207 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #208 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #209 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #210 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #211 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #212 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #213 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #214 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #215 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #216 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #217 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #218 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #219 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #220 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #221 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #222 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #223 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11) I/flutter (10119): #224 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #225 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #226 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #227 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #228 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #229 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #230 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #231 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #232 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #233 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #234 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #235 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #236 StatefulElement._firstBuild (package:flutter/src/widgets/framework.dart:3848:11) I/flutter (10119): #237 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #238 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #239 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #240 ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:3732:16) I/flutter (10119): #241 Element.rebuild (package:flutter/src/widgets/framework.dart:3547:5) I/flutter (10119): #242 ComponentElement._firstBuild (package:flutter/src/widgets/framework.dart:3701:5) I/flutter (10119): #243 ComponentElement.mount (package:flutter/src/widgets/framework.dart:3696:5) I/flutter (10119): #244 Element.inflateWidget (package:flutter/src/widgets/framework.dart:2950:14) I/flutter (10119): #245 Element.updateChild (package:flutter/src/widgets/framework.dart:2753:12) I/flutter (10119): #246 RenderObjectToWidgetElement._rebuild (package:flutter/src/widgets/binding.dart:909:16) I/flutter (10119): #247 RenderObjectToWidgetElement.mount (package:flutter/src/widgets/binding.dart:880:5) I/flutter (10119): #248 RenderObjectToWidgetAdapter.attachToRenderTree.<anonymous closure> (package:flutter/src/widgets/binding.dart:826:17) I/flutter (10119): #249 BuildOwner.buildScope (package:flutter/src/widgets/framework.dart:2266:19) I/flutter (10119): #250 RenderObjectToWidgetAdapter.attachToRenderTree (package:flutter/src/widgets/binding.dart:825:13) I/flutter (10119): #251 _WidgetsFlutterBinding&BindingBase&GestureBinding&ServicesBinding&SchedulerBinding&PaintingBinding&SemanticsBinding&RendererBinding&WidgetsBinding.attachRootWidget (package:flutter/src/widgets/binding.dart:712:7) I/flutter (10119): #252 runApp (package:flutter/src/widgets/binding.dart:756:7) I/flutter (10119): #253 main (package:json/main.dart:8:16) I/flutter (10119): #254 _startIsolate.<anonymous closure> (dart:isolate/runtime/libisolate_patch.dart:289:19) I/flutter (10119): #255 _RawReceivePortImpl._handleMessage (dart:isolate/runtime/libisolate_patch.dart:171:12) I/flutter (10119): ════════════════════════════════════════════════════════════════════════════════════════════════════ I/flutter (10119): [{_id: 5c55e837b1dee7326c4ba39d, create_date: 2019-02-02T18:57:59.406Z, name: Tariq, gender: male, email: [email protected], phone: 07954622145, __v: 0}, {_id: 5c55e86cb1dee7326c4ba39e, create_date: 2019-02-02T18:58:52.346Z, name: He, gender: Female, email: [email protected], phone: 075554622145, __v: 0}, {_id: 5c55e890b1dee7326c4ba39f, create_date: 2019-02-02T18:59:28.108Z, name: Sh, gender: Female, email: [email protected], phone: 075654622145, __v: 0}, {_id: 5c584f60af32d00dec0facae, create_date: 2019-02-04T14:42:40.036Z, name: Emad, gender: male, email: [email protected], __v: 0}, {_id: 5c585236af32d00dec0facaf, create_date: 2019-02-04T14:54:46.734Z, name: Fa, gender: Female, email: [email protected], phone: 075654622145, __v: 0}, {_id: 5c58605bcf4f4c3008e50a04, create_date: 2019-02-04T15:55:07.696Z, name: Fa, gender: Female, email: f @gmail.com, phone: 075654622145, __v: 0}]when i run the code i got the data in the console, but the UI for mobile APP . i get the error output
