In CSS I can use filter to change brightness. It's easy to make button hover effect.
filter: brightness(1.1);
filter: brightness(0.9);
Is there any way to change widget brightness in Flutter?
If your main goal is giving a hover effect on a button, you can use the combination of animated container(for the effect) and inkwell(onHover method to notify when hovering happens)
AnimatedContainer(
height: 70,
duration: Duration(milliseconds: 200),
padding: EdgeInsets.only(
top: (isHover) ? 25 : 30.0, bottom: !(isHover) ? 25 : 30),
child: Container(
height: 30,
color: Colors.blue,
child: InkWell(
onTap: () {},
child: Text("Hover Button"),
onHover: (val) {
print("Val--->{}$val");
setState(() {
isHover = val;
});
},
),
We do this in flutter
Colors.red.withOpacity(1.1);
Related
Is there a way to close the flutter speedDial when tap on a label widget?. I did not use SpeedDial's child property, but it has that feature. Currently when I tap on a label widget it stays until I manually close the widget. Or even a way to change the child property of SpeedDial widget would be enough, while I want a custom shape like in the picture.
Navigator.pop() did not work
SpeedDial(
buttonSize: const Size(45, 45),
animatedIcon: AnimatedIcons.menu_close,
children: [
SpeedDialChild(
labelWidget: GestureDetector(
onTap: () async {
Feedback.forTap(context);
await _crudStorage.deleteAllTask();
},
child: Container(
height: 50.0,
decoration: BoxDecoration(
color:
Theme.of(context).cardColor,
border: Border.all(width: 2.0),
borderRadius:
BorderRadius.circular(30.0),
),
child: Row(
children: [
const Padding(
padding: EdgeInsets.only(
left: 12.0, right: 8.0),
child:
Text('Clear all tasks'),
),
Padding(
padding:
const EdgeInsets.only(
right: 8.0),
child: SvgPicture.asset(
'assets/svg/all.svg',
),
),
],
),
),
),
),
],
)
don't use async & await on tap use separate function to Call
https://tutorialmeta.com/question/how-to-call-async-function-with-ontap-flutter
refer the above link
It was so simple. Also the development team, provided how to implement this on their official extension page on pub.dev go to pub. I will mention the same documentation for your reference:
first you need to create a value notifier:
ValueNotifier<bool> isDialOpen = ValueNotifier(false);
Then set openCloseDial to isDialOpen in your SpeedDial:
SpeedDial(
...
openCloseDial: isDialOpen,
...
)
Now you can change the state of dial open:
isDialOpen.value = false;
Example: Just set the value to false inside the onTap callback :)
onTap: () async {
Feedback.forTap(context);
await _crudStorage.deleteAllTask();
isDialOpen.value = false;
},
use closeManually: false in SpeedDial Contructor. The widget will close automatically on select any function.
I have a small problem.
I want to click on my custom icon, and I don't know how to do that :c
after this click, I want to go to another widget, but with that, I can try to work (i hope)
if u can tell me also how to do it with the entire widget.
class secondWidget extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Container(
height: 100,
width: 100,
margin: EdgeInsets.only(top: 100, bottom: 10),
color: Colors.pink,
child: new Icon(const IconData(0xe800, fontFamily: 'Dupa')),
//this is not working :c
onPressed: () {
newWidgetGoBrr();
});
);
Container doesn't have an onPressed. You need to use a GestureDetector widget with either Container or Icon.
GestureDetector(
onTap: () {
// after click logic goes here.
newWidgetGoBrr();
},
child: Container(
height: 100,
width: 100,
margin: EdgeInsets.only(top: 100, bottom: 10),
color: Colors.pink,
child: new Icon(const IconData(0xe800, fontFamily: 'Dupa')),
),
),
What you need is some type of detector that can detect your gesture. It can be obtained through many widgets but the most frequently used one is GestureDetector and InkWell.
You can wrap your Icon with an either of the widget. These widgets gives you access to the onTap property.
It's better to wrap your Icon with the Inkwell/GestureDector than to wrap the whole container(that depends on your requirement).
You can implement it like this:
class secondWidget extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Container(
height: 100,
width: 100,
margin: EdgeInsets.only(top: 100, bottom: 10),
color: Colors.pink,
child: InkWell(
onTap: newWidgetGoBrr(), // your logic
child: Icon(
const IconData(0xe800, fontFamily: 'Dupa'),
),
),
);
}
}
Note: With the new flutter release you don't need to use the new keyword anymore.
I'm trying to make a custom drop-down menu in Flutter that is just a simple button that on tap shows a scrollable row of products. I've attached some images that better show what I'm referring to. I tried to use an IconButton and an AnimatedContainer but I can't seem to get it working. I was hoping someone would have a better idea on how to do something like this.
Here is my code so far by the way:
class ModelsDropdown extends StatefulWidget {
final List<Phone> phones;
ModelsDropdown({#required this.phones});
#override
_ModelsDropdownState createState() => _ModelsDropdownState();
}
class _ModelsDropdownState extends State<ModelsDropdown> {
bool _droppedDown;
#override
void initState() {
_droppedDown = false;
super.initState();
}
#override
Widget build(BuildContext context) {
return AnimatedContainer(
duration: Duration(milliseconds: 300),
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(100.0),
border: Border.all(width: 2.0)
),
width: 32.0,
height: 32.0,
child: Column(
children: [
IconButton(
padding: const EdgeInsets.only(right: 0.0),
icon: Icon(
_droppedDown ? Icons.expand_more : Icons.expand_less
),
color: Colors.black,
onPressed: () {
setState(() {
_droppedDown = !_droppedDown;
});
}
),
_droppedDown ?
Container(
width: MediaQuery.of(context).size.width,
height: 300.0,
color: Colors.orangeAccent,
) :
SizedBox.shrink()
],
),
);
}
}
With the container at the bottom, it doesn't even work. I get an overflow error. Any help is very much appreciated. Thanks a lot, everyone.
I Think you should Change The Below Container with an AnimatedCrossFade.
Animated Cross Fade Has Two Child First and Second ...
https://api.flutter.dev/flutter/widgets/AnimatedCrossFade-class.html
Dont set Height for Your Child ... its Works Perfectly...
AnimatedCrossFade(
duration: const Duration(seconds: 3),
firstChild: Container(), // When you don't want to show menu..
secondChild: menu,
crossFadeState: _first ? CrossFadeState.showFirst : CrossFadeState.showSecond,
)
with this method you don't need Animated Container at top ... remove that.(return Column)...
with Animated cross Fade You don't need to Know The Height of widget and its for works dynamic Heights
-------------- if You Want to use Your Code and Use Fixed Height ----------------
width: _droppedDown ? YourWidth : 32.0,
height: _droppedDown ? 300 : 32.0,
i want to rescale my icon and rotate my icon until it's scale become 0,but i can only 'set' icon's size which means size become instantly 0 without animation, tried to wrap icon with animated container, but it doesn't effect to icon, any ideas for rotating and rescaling icon by time ? my code's here below.
Widget build1(BuildContext context) {
Widget widget1;
var animatedContainer = AnimatedContainer(
width: double.infinity,
height: double.infinity,
duration: Duration(seconds: 2),
color: animSize ? Colors.greenAccent[700] : Colors.yellow,
child: IconButton(
icon: Icon(
Icons.group,
size: animSize ? 0:90,
),
onPressed: () {
setState(() {
animSize = true;
});
},
));
widget1 = animatedContainer;
return widget1;
}
I am new to flutter and have to implement a functionality to select correct words from list of alphabets.First of all here is the image which i have to make.
The alphabets and the correct words will come from the server side.What is was thinking is that i will place all the Alphabets in grid view/list view and when user will select words by using gesture on the alphabets . I know that what i am thinking may be wrong.If thats the case then please tell me the correct way to achieve what is given in the image ? Thanks in advance.
After doing some more research I think I can point you in the right direction and I wrote a small demonstration app that should help you so I found a good article explaining why I was having issues nesting widgets that both receive touch input. It is slightly complex but the gist of it is. If multiple touch inputs are detected they are handled in what is called the GestureArena and the child widget always wins. You can define your own GestureFactory and use RawGestureDetector to work around this issue. However, this might be more than you need for your application and in my opinion is the more complicated route. The route I went still involves just GestureDetector obviously you would need to expand on this as it only draws one oval at this time but that should be easy.
Offset position = Offset(0, 0);
bool isTapped = false;
double width = 50;
double height = 50;
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.black,
body: Stack(
children: <Widget>[
Center(
child: Padding(
padding: const EdgeInsets.all(30.0),
child: GestureDetector(
child: GridView(
physics: NeverScrollableScrollPhysics(), //Very Important if
// you don't have this line you will have conflicting touch inputs and with
// gridview being the child will win
shrinkWrap: true,
gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 4,
childAspectRatio: 2,
),
children: <Widget>[
...letters
.map(
(letter) => Text(
letter,
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.amber,
fontSize: 18,
),
),
)
.toList(),
],
),
onTapDown: (TapDownDetails details) {
//User Taps Screen
print('Global Position: ${details.globalPosition}');
setState(() {
position = Offset(
details.globalPosition.dx - 25,
details.globalPosition.dy - 25,
);
isTapped = true;
});
print(position);
},
onVerticalDragUpdate: (DragUpdateDetails details) {
print('${details.delta.dy}');
setState(() {
height += details.delta.dy;
});
},
onHorizontalDragUpdate: (DragUpdateDetails details) {
print('${details.delta.dx}');
setState(() {
width += details.delta.dx;
});
},
onTapCancel: () {
//User has released finger from screen
//Validate Word??
},
),
),
),
Positioned(
top: position.dy,
left: position.dx,
child: Container(
height: height,
width: width,
decoration: ShapeDecoration(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(30),
side: BorderSide(
color: isTapped ? Colors.blue : Colors.transparent,
width: 3.0),
),
),
),
),
],
),
);
}
Flutter Deep Dive: Gestures found this very helpful key to figuring this all out.