Below is my Alertdialog: return AlertDialog( title: const Text('Choose Device'), content: ListView.builder( shrinkWrap: true, itemCount: listDevices.length, itemBuilder: (_, int index) => deviceList(listDevices[index]), ), ); Below is deviceList function: Widget deviceList(String strDevice) => SizedBox( height: 150.0, child: Column( mainAxisAlignment: MainAxisAlignment.spaceAround, children:…
How can I listen to stream and emit state with Cubit? With Bloc we can do something like this: on<VideoStreamPlayPauseEvent>( (event, emit) async { if (event.play) { await emit.forEach( videoStreamingRepo.videoDataStream, onData: (VideoData videoStreamData) => VideoStreamState( currentFrame: videoStreamData, isPlaying: true, ),…
I’m new to Flutter. How can I retrieve user data from Firebase to my profile page? My Firebase data contains a name, email, blood type, and a date of birth. And I would like to retrieve this data to my…
When using StreamBuilder it shows below error. The following _CastError was thrown building StreamBuilder<DocumentSnapshot<Map<String, dynamic>>>(dirty, state: _StreamBuilderBaseState<DocumentSnapshot<Map<String, dynamic>>, AsyncSnapshot<DocumentSnapshot<Map<String, dynamic>>>>#65942): Null check operator used on a null value My try: I set CircularProgressIndicator for ConnectionState.none, ConnectionState.waiting,!streamSnapshot.hasData It didn't work. There is…
im working on a UI app. manage to implement tabbar but got quite confused about a thin line above the tabbar. it's either a line or shadow, not sure. already run several code but doesn't manage to remove the line.…
This is the result that I want. This is the current output that I have. How can I achieve this result specifically the lines that are present in between the list tiles? I am using a ListView to show the…
I want to add conditional for image but it show an error on _setImage(), how to fix it? The body might complete normally, causing 'null' to be returned, but the return type, 'String', is a potentially non-nullable type. Try adding…
I get this error in Flutter i'm trying to use data but the constructor did't allow and gives two error 1/ error: 'Category' isn't a function. (invocation_of_non_function at [torrism] libapp_data.dart:8) 2/error: The name 'Category' is defined in the libraries 'package:flutter/src/foundation/annotations.dart…
I'm building a VPN application with flutter. After users write their server, username, and password they used to click the 'connect' button. But for now, I have two buttons that contain connect and disconnect functions. connect function: ElevatedButton( child: const…
I want to check if my Darkmode is enable or not so I did this: @override Widget build(BuildContext context) { var brightness = MediaQuery.of(context).platformBrightness; bool isDarkMode = brightness == Brightness.dark; print(isDarkMode); in the first widget which builds after the MaterialApp,…