onSubmitted As the name suggestions, it’s called when user finishes editing, e.g. press “done” or “send” on the keyboard. The callback conveniently passes the value to you, so you can do your business logic with it. At the same time, since Flutter assumes the user is “done”, it will hide the on-screen keyboard. onEditingComplete This … Read more
You can capture the output of a CustomPainter with PictureRecorder. Pass your PictureRecorder instance to the constructor for your Canvas. The Picture returned by PictureRecorder.endRecording can then be converted to an Image with Picture.toImage. Finally, extract the image bytes using Image.toByteData. Here’s an example: https://github.com/rxlabz/flutter_canvas_to_image
FutureBuilder is just a convenient helper to get the widget tree rebuilt when a Future completes. You can use funcThatReturnsFuture().then((result) { print(result); setState(() { someVal = result; }) }) or Future funcThatMakesAsyncCall() async { var result = await funcThatReturnsFuture(); print(result); setState(() { someVal = result; }) } The main limitation is that you can’t return … Read more
PageController constructor has named parameter initialPage. You can use it, just create the controller somewhere outside of build function: class MyApp extends StatefulWidget { @override _MyAppState createState() => _MyAppState(); } class _MyAppState extends State<MyApp> { PageController controller; @override void initState() { super.initState(); controller = PageController(initialPage: 3); } @override void dispose() { controller.dispose(); super.dispose(); } @override … Read more
I fixed your code with the following changes: Removed Row widget inside Wrap. Removed Expanded widget. Add the property maxLines to your Text widget. Widget _buildCategories() { return Card( margin: const EdgeInsets.only(top: 20.0), child: Padding( padding: const EdgeInsets.all(20.0), child: Column( children: <Widget>[ Text( ‘Categories’, style: TextStyle(fontFamily: ‘MonteSerrat’, fontSize: 16.0), ), Wrap( children: <Widget>[ _checkBox(‘Gaming’), _checkBox(‘Sports’), … Read more
You need to create an analysis_options.yaml file in the root of your flutter app and write something like analyzer: enable-experiment: – spread-collections Also make sure to switch to the correct channel where the new feature is included eg (dev, beta or master) flutter channel dev And also make sure you have a recent enough version … Read more
Do follow some steps: Go to flutter_app => android => gradle => wrapper directory Delete gradle-wrapper.jar file Open and edit gradle-wrapper.properties file Change distributionUrl=https://services.gradle.org/distributions/gradle-x.x.x-all.zip to gradle-7.2-all.zip or latest On terminal use flutter run command I solved my issue, hopefully yours
Flutter supports now autofill (password, email, username, etc.) ☑️ The merged pull request with an example: https://github.com/flutter/flutter/pull/52126 Example: @override Widget build(BuildContext context) { return AutofillGroup( child: Column( children: <Widget>[ TextField(controller: username, autofillHints: [AutofillHints.username]), Checkbox( value: isNewUser, onChanged: (bool newValue) { setState(() { isNewUser = newValue; }); }, ), if (isNewUser) TextField(controller: newPassword, autofillHints: [AutofillHints.newPassword]), if … Read more
Use Map instead, because body in http package only has 3 types: String, List<int> or Map<String, String>. Try this: final Uri uri = Uri.parse(‘https://na57.salesforce.com/services/oauth2/token’); final map = <String, dynamic>{}; map[‘grant_type’] = ‘password’; map[‘client_id’] = ‘3MVG9dZJodJWITSviqdj3EnW.LrZ81MbuGBqgIxxxdD6u7Mru2NOEs8bHFoFyNw_nVKPhlF2EzDbNYI0rphQL’; map[‘client_secret’] = ’42E131F37E4E05313646E1ED1D3788D76192EBECA7486D15BDDB8408B9726B42′; map[‘username’] = ‘[email protected]’; map[‘password’] = ‘ABC1234563Af88jesKxPLVirJRW8wXvj3D’; http.Response response = await http.post( uri, body: map, );
ListTile is styled with ListTileTheme and we can add own styles for child ListTile like this ListTileTheme( contentPadding: EdgeInsets.all(0), child: ExpansionTile(…) )