In order for a server to provide an external API it needs to be able to deal with Cross Origin Resource Sharing (CORS). CORS is an HTTP-header based mechanism that allows a server to indicate which origins (domain, protocol, or port) that a browser should permit loading of resources. You can create a fairing to … Read more
This method is based on manipulations with an HTML document. Some additional packages should be imported: import ‘dart:convert’; import ‘dart:html’ as html; // or package:universal_html/prefer_universal/html.dart Code snippet: final text=”this is the text file”; // prepare final bytes = utf8.encode(text); final blob = html.Blob([bytes]); final url = html.Url.createObjectUrlFromBlob(blob); final anchor = html.document.createElement(‘a’) as html.AnchorElement ..href = … Read more
tl;dr //in your example: settings.name = “/post?id=123” final settingsUri = Uri.parse(settings.name); //settingsUri.queryParameters is a map of all the query keys and values final postID = settingsUri.queryParameters[‘id’]; print(postID); //will print “123” Drilldown In a perfect world you would access queryParameters with Uri.base.queryParameters because: Uri.base Returns the natural base URI for the current platform. When running in … Read more
You can now use a simple package and a single line of code to remove the leading hash (#) from your Flutter web app: url_strategy (full disclosure: I am the author) Using url_strategy You simply add the dependency as described here and then add the following function call to your main function: import ‘package:url_strategy/url_strategy.dart’; void … Read more
For being able to display your images from any other Domain or from Firebase Storage on a Flutter web page you have to configure your data for CORS. Open the GCP console, select your project and start a cloud terminal session by clicking the >_ icon button in the top navbar. Click the open editor … Read more
you can use constructor but in this case, whenever you use this class, you have to provide value, also you can make class value nullable and check it on build time. Another way is passing data by Route. for more navigate-with-arguments Here are is example: Passing data using ModalRoute Navigator.of(context).push( MaterialPageRoute( builder: (context) => WidgetA(), … Read more
Using dart:html package directly in Flutter is not recommended. Instead, use this package: https://pub.dev/packages/file_picker. Example of how to use in Flutter Web: class FileUploadButton extends StatelessWidget { @override Widget build(BuildContext context) { return RaisedButton( child: Text(‘UPLOAD FILE’), onPressed: () async { var picked = await FilePicker.platform.pickFiles(); if (picked != null) { print(picked.files.first.name); } }, ); … Read more
You should try to declare constructor the first page accept the id and push this id to second page or screen like this below code is first page Navigator.push( context, MaterialPageRoute( builder: (context) => ABC.withId( id, ), ), ) the create constructor inside second page screen class ABC extends StatefulWidget { @override _ABCState createState() => … Read more
Try to add your fist Column inside SingleChildScrollView like below hope it help you: body: SingleChildScrollView( child:Column( children:[ //Declare Your Widgets Here ], ), ),
this worked for me, I added the below header on the lambda function return { statusCode: 200, headers: { “Access-Control-Allow-Origin”: “*”, // Required for CORS support to work “Access-Control-Allow-Credentials”: true, // Required for cookies, authorization headers with HTTPS “Access-Control-Allow-Headers”: “Origin,Content-Type,X-Amz-Date,Authorization,X-Api-Key,X-Amz-Security-Token,locale”, “Access-Control-Allow-Methods”: “POST, OPTIONS” }, body: JSON.stringify(item) };