I want to know that how can I set a width to match parent layout width new Container( width: 200.0, padding: const EdgeInsets.only(top: 16.0), child: new RaisedButton( child: new Text( “Submit”, style: new TextStyle( color: Colors.white, ) ), colorBrightness: Brightness.dark, onPressed: () { _loginAttempt(context); }, color: Colors.blue, ), ), I know about little bit on … Read more
I have a scrollable ListView where the number of items can change dynamically. Whenever a new item is added to the end of the list, I would like to programmatically scroll the ListView to the end. (e.g., something like a chat message list where new messages can be added at the end) My guess is … Read more
I have seen that I can’t set the width of a ElevatedButton in Flutter. If I have well understood, I should put the ElevatedButton into a SizedBox. I will then be able to set the width or height of the box. Is it correct? Is there another way to do it? This is a bit … Read more
I’ve used both Expanded and Flexible widgets and they both seem to work the same. What is the difference between Expanded and Flexible? 8 Answers 8
I have a Column widget with two TextField widgets as children and I want to have some space between both of them. I already tried mainAxisAlignment: MainAxisAlignment.spaceAround, but the result was not what I wanted. 21 Answers 21
How can I add shadow to the widget like in the picture below? This is my current widget code. 13 Answers 13
This is my code: @override Widget build(BuildContext context) { return new Material( color: Colors.deepPurpleAccent, child: new Column( mainAxisAlignment: MainAxisAlignment.center, children:<Widget>[new GridView.count(crossAxisCount: _column,children: new List.generate(_row*_column, (index) { return new Center( child: new CellWidget() ); }),)] ) ); } Exception as follows: I/flutter ( 9925): ══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════ I/flutter ( 9925): The following … Read more
In Android, every single View subclass has a setVisibility() method that allows you modify the visibility of a View object There are 3 options of setting the visibility: Visible: Renders the View visible inside the layout Invisible: Hides the View, but leaves a gap that is equivalent to what the View would occupy if it … Read more
I’m getting a rendering exception that I don’t understand how to fix. I’m attempting to create a column that has 3 rows. Row [Image] Row [TextField ] Row [Buttons] Here is my code to build the container: Container buildEnterAppContainer(BuildContext context) { var container = new Container( padding: const EdgeInsets.all(8.0), child: new Column( mainAxisAlignment: MainAxisAlignment.start, children: … Read more
For various reasons, sometimes the build method of my widgets is called again. I know that it happens because a parent updated. But this causes undesired effects. A typical situation where it causes problems is when using FutureBuilder this way: @override Widget build(BuildContext context) { return FutureBuilder( future: httpCall(), builder: (context, snapshot) { // create … Read more
