Like many other new things, Dart FFI doesn’t have proper documentation in which to explain how to make some things and hence my questions: How do load shared libraries in other operating systems like Linux? How can I create a C++ class in Dart? Where should I put the compiled libraries so that desktop versions ..
Category : dart
I am trying to get the return value from c++ function in dart. My c++ code is something like this static bool is_alive() { return true; } extern "C" void **do_register() { int methods = 1; void **functions = (void **) malloc(sizeof(void *) * methods); functions[0] = (bool *) is_alive; // this is simplified, there ..
I am making an application for Win10 platform,I want a section with a retractable width left menu bar, but I can’t find such a component,Is there a widget that can drag the width with the mouse in flutter for windows platform? Source: Windows..
I have a TextField wrapped with a ToolTip to show error messages. when when user opens windows virtual keyboard the TextField lost its focus and user is unable to type, this happens even there is no message in the Tooltip. I tested it the Tooltip widget causes this. Source: Windows..
This is part of the code for a Flutter plugin that uses a Flutter texture to render something with OpenGL private FlutterVideoPlugin(Registrar registrar, MethodChannel channel) { this.registrar = registrar; this.channel = channel; this.textures = registrar.textures(); } @Override public void onMethodCall(MethodCall call, Result notSafeResult) { final AnyThreadResult result = new AnyThreadResult(notSafeResult); if (call.method.equals("createVideoRenderer")) { TextureRegistry.SurfaceTextureEntry entry ..
I used the json serialization dependency but unfortunately the g.dart files are not getting genereated. I tried some of suggestions from stack but nothing worked.When I ran flutter pub run build_runner build ,android studio terminal showed this error : ‘flutter’ is not recognized as an internal or external command,operable program or batch file. Then I ..
import ‘dart:ui’; import ‘package:flutter/material.dart’; import ‘./Match.dart’; void main() => runApp(MyApp()); class MyApp extends StatelessWidget { final List<Match> match = [ Match( sAingsone1: 298, sAingstwo2: 174, sAtotalscore: 472, wAingsone1: 149, wAingstwo2: 165, wAtotalscore: 324, over: 60, sAwon: 158, ), Match( sAingsone1: 398, sAingstwo2: 474, sAtotalscore: 272, wAingsone1: 249, wAingstwo2: 365, wAtotalscore: 394, over: 70, sAwon: 358, ..
Problem: "RenderPhysicalModel object was given an infinite size during layout. The relevant error-causing widget was Scaffold and List.View." line 35 and 38 I am fairly new at coding btw code: import ‘package:cloud_firestore/cloud_firestore.dart’; import ‘package:flutter/material.dart’; import ‘Songspage.dart’; class Browse extends StatefulWidget { @override _BrowseState createState() => _BrowseState(); } class _BrowseState extends State<Browse> { Future getdata() async ..
How do I include version number, author information and other application metadata in a compiled dart native application? I have included it in the .yaml file but does not show up when checking the properties of the compiled exe in windows. I am running dart 2.2 on Windows 10 in VS Code. Any help would ..
import ‘dart:async’; import ‘dart:io’; import ‘package:validated/validated.dart’; //import ”; enum Token {Identifier, Constant, Operator, Keyword, Error} void main() async { var f = new File(‘data.txt’); var fdata ; if(await f.exists()){ fdata= await f.readAsString(); } bool isConstant(var str){ if(isNumeric(str)) return true; else if(str[0]==’"’ && str.length-1==’"’) return true; else if(str[0]==”’ && str.length-1==”’) return true; else return false; } ..
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