I just did it for the date. You can copy the implementation made in C# in dart. DateTime.DateToTicks(…) void main() { final dateTime = DateTime.now(); print(DateTimeUtils.dateToTicks( dateTime.year, dateTime.month, dateTime.day, )); } class DateTimeUtils { static const int TicksPerMillisecond = 10000; static const int TicksPerSecond = TicksPerMillisecond * 1000; static const int TicksPerMinute = TicksPerSecond * … Read more
I hope this code helps you. It can be written in a more beautiful way but I hope you get the idea. //Convert the color to hex, Save it in preferences var myColor = Colors.blue; var hex = ‘#${myColor.value.toRadixString(16)}’; //save Hex value in sharedpreference. //get the hex value from shared preferences and convert it into … Read more
This is declaring a local variable: AnimationController _animationController = AnimationController(vsync: this, duration: Duration(milliseconds: 500)); What you want is assign to your existing class member variable: _animationController = AnimationController(vsync: this, duration: Duration(milliseconds: 500)); solved Dart throws LateInitializationError even when I initialize variables in initState
(Answer update: Since v0.18, this sort of pitfall doesn’t exist since the UI and background code run in a shared isolate. The answer below is only relevant for v0.17 and earlier.) audio_service runs your BackgroundAudioTask in a separate isolate. In the README, it is put this way: Note that your UI and background task run … Read more
You need firebase_dynamic_links to implement a referral program, For more information visit official page How Create Dynamic Link? final DynamicLinkParameters parameters = DynamicLinkParameters( uriPrefix: ‘https://abc123.app.goo.gl’, link: Uri.parse(‘https://example.com/’), androidParameters: AndroidParameters( packageName: ‘com.example.android’, minimumVersion: 125, ), iosParameters: IosParameters( bundleId: ‘com.example.ios’, minimumVersion: ‘1.0.1’, appStoreId: ‘123456789’, ), googleAnalyticsParameters: GoogleAnalyticsParameters( campaign: ‘example-promo’, medium: ‘social’, source: ‘orkut’, ), itunesConnectAnalyticsParameters: ItunesConnectAnalyticsParameters( providerToken: … Read more
Found the Solution using FutureBuilder class MyApp extends StatefulWidget { @override _MyAppState createState() => _MyAppState(); } class _MyAppState extends State<MyApp> { _load() async { final file = await rootBundle.loadString(‘assets/j.json’); final data = await jsonDecode(file); print(data.toString()); } @override Widget build(BuildContext context) { return FutureBuilder( future: _load(), builder: (_, AsyncSnapshot<dynamic> snapshot) { return !snapshot.hasData ? Container( color: … Read more
In your function list you are calling the functions on list creation. This makes flutter throws this exception (which is correct because Navigator tries to route during the build phase of the other widget). Apart from that, the code is quite weird to me but to get it to work you need to use this … Read more
You are using the wrong list: This: chatDocs[index].documentID, chatDocs[index][‘text’], (chatDocs[index][‘userId’] == futureSnapshot.data.uid) ? true : false, ValueKey(chatDocs[index].documentID)); should reference messages, not chatDocs. Because index is the index into messages. 0 solved Flutter List UI not updating properly
Changing _answersModel to answersModel would fix your issue. Also calling AnswersController.answersModel doesn’t work because answersModel is not a static field, I think you meant call answersController.answersModel Note: Adding an underscore to a class file is making it private field in dart/flutter which means it can’t be accessed in another file. solved How to fix this … Read more