I'm trying to center the minimized icon in this Icon Button but can't get it to work:
#override
Widget build(BuildContext context) {
return Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
SizedBox(
height: 25,
child: TextButton(
onPressed: appWindow.minimize,
style: const ButtonStyle(
alignment: Alignment.center,
padding: MaterialStatePropertyAll(EdgeInsets.all(0))),
child: const Icon(
Icons.minimize,
color: Colors.white,
),
),
),
TextButton(
onPressed: maximizeOrRestore,
child: Icon(
appWindow.isMaximized ? Icons.fullscreen_exit : Icons.fullscreen,
color: Colors.white,
)),
TextButton(
onPressed: appWindow.close,
child: const Icon(
Icons.close,
color: Colors.white,
),
)
],
);
}
I'm expecting the button to be centered and as you can see i've already tried using alignment and padding
When you say "center the minimized icon", do you mean that this icon should be between the other two icons? In that case, you just need to switch the first two widgets in the Row widget's children.
But I think you want the minimize icon to be higher so that it's something like-> - ◾️ X
If this is what you want then you can't use Icons.minimize. If you check out this icon on this page, you will notice that the minimize icon looks like an underscore. This is by design. I think this looks good, but if you insist on having a minus sign kind of symbol then you can use Icons.remove_rounded.
It's not that the icon is not centered, the Material minimize icon has blank space in the upper size, because it is suppose to be down to understand that is a minimize button just like the maximize button has blank space in the bottom size. What you can try is to use a different icon if you really want it to be centered. Try with Icons.horizontal_rule.
You can use CupertinoIcons.minus like
TextButton(
onPressed: appWindow.minimize,
child: const Icon(
CupertinoIcons.minus,
color: Colors.white,
),
),
I want to reduce the Width and not hardcode the value by specifying minWidth and minHeight, I want it to look same across all the devices.
ElevatedButton.icon(
onPressed: () {},
icon: Icon(Icons.arrow_forward_ios_sharp),
label: Text('Plus One'),
)
Use Media Query to use width wisely for your solution which will run the same for small and large screen
Container(
width: MediaQuery.of(context).size.width * 0.5, // Will take 50% of screen space
child: RaisedButton(
child: Text('Go to screen two'),
onPressed: () {},
),
)
You can apply a similar solution to SizeBox also.
I would like to create a container that contains a row of
a text widget, a sizedBox and an IconButton (to delete this container).
The container should size itself to the children, that means the row
Containers with no children try to be as big as possible unless the incoming constraints are unbounded, in which case they try to be as small as possible. Containers with children size themselves to their children. The width, height, and constraints arguments to the constructor override this. (From the flutter webpage.)
The row expands as much as possible, but I would like it to be as small as possible. The container (in particular its borders) should be as small as possible
Widget chipForm(String chipText){
return Container(
decoration: BoxDecoration(
border: Border.all(
width: 3.0
),
borderRadius: BorderRadius.all(
Radius.circular(5.0)
),
),
child: Row(
children: [
Text(chipText),
SizedBox(width : 10),
IconButton(
icon: Icon(Icons.clear),
onPressed: (){},
)
],
),
);
}
How do I do that?
The Row widget has a property mainAxisSize which is
How much space should be occupied in the main axis.
Set this to MainAxisSize.min which
Minimize[s] the amount of free space along the main axis, subject to the incoming layout constraints.
to shrink the Row as much as possible.
Example:
Row(
mainAxisSize: MainAxisSize.min,
children: [
Text(chipText),
SizedBox(width : 10),
IconButton(
icon: Icon(Icons.clear),
onPressed: (){},
)
],
),
You should check the documentation before asking here.
I'm trying to embed a flat button with a variable amount of text within a scroll view, so that the user can scroll the text but also tap it in order to perform an action. I tried doing this with a flat button embedded in a ConstrainedBox, which itself is embedded in a SingleChildScrollView.
I've tried embedding the FlatButton in a SingleChildScrollView as below. Earlier, I tried wrapping the text in an expanded widget with a SingleChildScrollView ancestor but that caused runtime errors because the requirements of the scroll view and the expanded view conflict (as far as I understand).
Widget contentScreen() {
return SingleChildScrollView(
child: ConstrainedBox(
constraints: BoxConstraints(),
child: FlatButton(
onPressed: () {
_toggleContent();
},
child:
Column(children: <Widget>[
Container(
child: Text(
"Lorem Ipsum....",
style: TextStyle(color: Colors.white, fontSize: 20))),
]
)
)
)
);
}
The text just doesn't scroll. Instead it overflows and shows the diagonal yellow bars. I don't have a list of exactly what I've tried, but where I'm at right now is that I'm using the above code but there is no scrolling behavior as expected. :\
I tried this: How to make the Scrollable text in flutter?
This: Make scrollable Text inside container in Flutter
And this: how to make text or richtext scrollable in flutter?
Is there something about the FlatButton's behavior that just precludes scrolling? If so, how can I work around that to still get the two behaviors (ability to both scroll and tap to perform action) that I want?
Have you tried this? Why do you need Expanded widget?
Container(
height: 20.0,
child: FlatButton(
onPressed: () {},
child: SingleChildScrollView(
child: Text('Lorem ipsum'),
),
),
),
Gesture Detector should also work well.
Container(
height: 20.0,
child: FlatButton(
onPressed: () {},
child: SingleChildScrollView(
child: Text('Lorem ipsum'),
),
),
),
I want to have a row of IconButtons, all next to each other, but there seems to be pretty big padding between the actual icon, and the IconButton limits. I've already set the padding on the button to 0.
This is my component, pretty straightforward:
class ActionButtons extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Container(
color: Colors.lightBlue,
margin: const EdgeInsets.all(0.0),
padding: const EdgeInsets.all(0.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
IconButton(
icon: new Icon(ScanrIcons.reg),
alignment: Alignment.center,
padding: new EdgeInsets.all(0.0),
onPressed: () {},
),
IconButton(
icon: new Icon(Icons.volume_up),
alignment: Alignment.center,
padding: new EdgeInsets.all(0.0),
onPressed: () {},
)
],
),
);
}
}
I want to get rid of most of the light blue space, have my icons start earlier on the left, and closer to each other, but I can't find the way to resize the IconButton itself.
I'm almost sure this space is taken by the button itself, 'cause if I change their alignments to centerRight and centerLeft they look like this:
Making the actual icons smaller doesn't help either, the button is still big:
thanks for the help
Simply pass an empty BoxConstrains to the constraints property and a padding of zero.
IconButton(
padding: EdgeInsets.zero,
constraints: BoxConstraints(),
)
You have to pass the empty constrains because, by default, the IconButton widget assumes a minimum size of 48px.
Two ways to workaround this issue.
Still Use IconButton
Wrap the IconButton inside a Container which has a width.
For example:
Container(
padding: const EdgeInsets.all(0.0),
width: 30.0, // you can adjust the width as you need
child: IconButton(
),
),
Use GestureDetector instead of IconButton
You can also use GestureDetector instead of IconButton, recommended by Shyju Madathil.
GestureDetector( onTap: () {}, child: Icon(Icons.volume_up) )
It's not so much that there's a padding there. IconButton is a Material Design widget which follows the spec that tappable objects need to be at least 48px on each side. You can click into the IconButton implementation from any IDEs.
You can also semi-trivially take the icon_button.dart source-code and make your own IconButton that doesn't follow the Material Design specs since the whole file is just composing other widgets and is just 200 lines that are mostly comments.
Wrapping the IconButton in a container simply wont work, instead use ClipRRect and add a material Widget with an Inkwell, just make sure to give the ClipRRect widget enough border Radius 😉.
ClipRRect(
borderRadius: BorderRadius.circular(50),
child : Material(
child : InkWell(
child : Padding(
padding : const EdgeInsets.all(5),
child : Icon(
Icons.favorite_border,
),
),
onTap : () {},
),
),
)
Instead of removing a padding around an IconButton you could simply use an Icon and wrap it with a GestureDetector or InkWell as
GestureDetector(
ontap:(){}
child:Icon(...)
);
Incase you want the ripple/Ink splash effect as the IconButton provides on click wrap it with an InkWell
InkWell(
splashColor: Colors.red,
child:Icon(...)
ontap:(){}
)
though the Ink thrown on the Icon in second approach wont be so accurate as for the IconButton, you may need to do some custom implementation for that.
Here's a solution to get rid of any extra padding, using InkWell in place of IconButton:
Widget backButtonContainer = InkWell(
child: Container(
child: const Icon(
Icons.arrow_upward,
color: Colors.white,
size: 35.0,
),
),
onTap: () {
Navigator.of(_context).pop();
});
I was facing a similar issue trying to render an Icon at the location the user touches the screen. Unfortunately, the Icon class wraps your chosen icon in a SizedBox.
Reading a little of the Icon class source it turns out that each Icon can be treated as text:
Widget iconWidget = RichText(
overflow: TextOverflow.visible,
textDirection: textDirection,
text: TextSpan(
text: String.fromCharCode(icon.codePoint),
style: TextStyle(
inherit: false,
color: iconColor,
fontSize: iconSize,
fontFamily: icon.fontFamily,
package: icon.fontPackage,
),
),
);
So, for instance, if I want to render Icons.details to indicate where my user just pointed, without any margin, I can do something like this:
Widget _pointer = Text(
String.fromCharCode(Icons.details.codePoint),
style: TextStyle(
fontFamily: Icons.details.fontFamily,
package: Icons.details.fontPackage,
fontSize: 24.0,
color: Colors.black
),
);
Dart/Flutter source code is remarkably approachable, I highly recommend digging in a little!
A better solution is to use Transform.scale like this:
Transform.scale(
scale: 0.5, // set your value here
child: IconButton(icon: Icon(Icons.smartphone), onPressed: () {}),
)
You can use ListTile it gives you a default space between text and Icons that would fit your needs
ListTile(
leading: Icon(Icons.add), //Here Is The Icon You Want To Use
title: Text('GFG title',textScaleFactor: 1.5,), //Here Is The Text Also
trailing: Icon(Icons.done),
),
I like the following way:
InkWell(
borderRadius: BorderRadius.circular(50),
onTap: () {},
child: Container(
padding: const EdgeInsets.all(8),
child: const Icon(Icons.favorite, color: Colors.red),
),
),
enter image description here
To show splash effect (ripple), use InkResponse:
InkResponse(
Icon(Icons.volume_up),
onTap: ...,
)
If needed, change icons size or add padding:
InkResponse(
child: Padding(
padding: ...,
child: Icon(Icons.volume_up, size: ...),
),
onTap: ...,
)