I would like to make the inkwell image button to be disabled. I can disable onTap event, but can't make gray like disabled button. I tried with adding this code
decoration: new BoxDecoration(color:Colors.grey.withOpacity(0.6)),
But it doesn't work as I want.
My code:
child: Container(
decoration:
new BoxDecoration(color: Colors.grey.withOpacity(0.6)),
child: Material(
//elevation: 4.0,
clipBehavior: Clip.none,
color: Colors.black,
child: Stack(
alignment: Alignment.center,
fit: StackFit.passthrough,
children: [
Ink.image(
image: AssetImage(ihaveheard_imagepath),
fit: BoxFit.cover,
width: MediaQuery.of(context).size.width / 4 * 3,
height: MediaQuery.of(context).size.width / 6,
child: InkWell(onTap: () {}),
),
Align(
alignment: Alignment.center,
child: Padding(
padding: EdgeInsets.all(8.0),
child: InkWell(
child: Text(
LocaleKeys.ihaveheard,
style: TextStyle(
fontSize:
MediaQuery.of(context).size.width / 30,
color: Colors.white),
).tr(),
onTap: () {
ihaveheard_imagepath =
"assets/images/greenbutton.png";
setState(() {});
},
),
),
)
],
),
),
),
child:
IgnorePointer(
ignoring: disableBtn, //true or false
child: Container(
foregroundDecoration: disableBtn
? BoxDecoration( //this can make disabled effect
color: Colors.grey,
backgroundBlendMode: BlendMode.lighten)
: null,
child: ...
You can use IgnorePointer as parent widget to prevent tab event.
IgnorePointer(
ignoring: disableBtn, //true, false
child: yourWidget()
You can pass null to decoration to show default based on tappable state
Container(
decoration: disableBtn? BoxDecoration(...): null,
.....
)
Related
I have a screen, which contains a button, when tapping on that button, a showDialog function is been called, which displays a popup with a textfield, whenever the keyboard appears or disappears, the whole screen reloads, even the api calls, as if I'm calling setState ,
the class is a StatefulWidget
Button trigger:
CustomButton(buttonName: defaultLanguage == "en" ? "Settings" : "Ajustes", backgroundColor:
appVioletColor, onPress: () {
PopupScreen().displayDialog(context, isLargeScreen);
}, isLanguage: true, style: Styles.generateWeightFont(Colors.white, isLargeScreen ? 18 : 9, FontWeight.w400),
image: new AssetImage('assets/Settings/setting.png'), isLargeScreen: isLargeScreen ,),
PopupScreen code:
class PopupScreen {
final pinCodeReader = TextEditingController();
Future displayDialog(BuildContext context, bool isLargeScreen) {
return
showDialog(
barrierDismissible: true,
useSafeArea: false,
context: context,
builder: (BuildContext context) =>
Material(
type: MaterialType.transparency,
child: Center(
child:
Padding(
padding: EdgeInsets.only(
bottom: MediaQuery.of(context).viewInsets.bottom),
child:
Container(
color: Colors.white,
height: MediaQuery.of(context).size.height / 2,
width: MediaQuery.of(context).size.width / 1.5,
child:
ListView(
children:[
Column(
children: [
Container(
alignment: Alignment.topCenter,
height: 12,
width: 411,
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage("assets/WelcomeScreen/purple-top-rec.png"),
)
),
),
const SizedBox(height: 24,),
Container(
width: 200,
height: 100,
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage("assets/WelcomeScreen/pin_icon.png"),
)
),
),
const SizedBox(height: 17,),
Container(
padding: EdgeInsets.only(left: 25),
alignment: Alignment.topLeft,
child: Text("Please enter security pin", style:
Styles.generateWeightFont(Colors.black, 24, FontWeight.w400),),
),
const SizedBox(height: 15,),
Container(
padding: EdgeInsets.only(left: 25, right: 25),
child: buildCommonTextField("", pinCodeReader, whiteGrey, TextInputType.number),
),
const SizedBox(height: 12,),
Container(
alignment: Alignment.center,
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Container(
width: 100,
height: 50,
alignment: Alignment.center,
decoration: BoxDecoration(
border: Border.all(color: greyColor, width: 1)
),
child: Text("Cancel", style: Styles.generateWeightFont(greyColor, 18, FontWeight.w700),),
),
const SizedBox(width: 10,),
Container(
width: 114,
height: 48,
alignment: Alignment.center,
decoration: BoxDecoration(
color: appVioletColor,
border: Border.all(color: greyColor, width: 1)
),
child: Text("Done", style: Styles.generateWeightFont(Colors.white, 18, FontWeight.w700),),
),
],
),
)
],
),
],
),
),
)
)
)
);
}
}
Anyone has an idea what's going on?
thanks
When the keyboard appears or disappears, it is an animation that can last for a little while. During this, the available screen area for your app is constantly changing: on opening the keyboard it shrinks, on closing the keyboard it grows.
Whenever you use MediaQuery.of(context) in your code, Flutter engine will keep notifying your widget about media changes, causing rebuilds. So in your case the widget is rebuilt on every animation frame caused by opening or closing the keyboard.
This is an intended behaviour, for example if the user rotates the screen, the available MediaQuery.of(context).size will change, and it should result in a rebuild. If you'd like to avoid this, organize you code in a way that it calls MediaQuery.of(context) only in those parts where you want to get updates about media parameters constantly.
I'm building an AR app with Flutter and using the ar_flutter_plugin.
The position of the AR widget seems to be fixed to the top left and it doesn't move anywhere else. Whatever the other widgets in the tree, doesn't change anything. It's always at top left corner (see image).
It works with a dummy widget just fine (compare second img).
Child Ar widget
Widget build(BuildContext context) {
return SizedBox(
width: widget.width,
height: widget.height,
child: Column(
children: [
Expanded(
child: Column(children: [
Expanded(
child: ARView(
onARViewCreated: onARViewCreated,
planeDetectionConfig:
PlaneDetectionConfig.horizontalAndVertical,
),
),
Align(
alignment: Alignment(1, 1),
child: FloatingActionButton(onPressed: takePicture))
]),
),
],
));
}
Parent Widget
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Title'),
),
key: scaffoldKey,
backgroundColor: FlutterFlowTheme.of(context).primaryBackground,
body: SafeArea(
child: GestureDetector(
onTap: () => FocusScope.of(context).unfocus(),
child: Stack(
children: [
Container(
width: 350,
height: 350,
child: ObjectsOnPlanesWidget(
// child: custom_widgets.ArPlaceholder(
width: double.infinity,
height: double.infinity,
modelUrl: widget.modelUrl,
),
),
Align(
alignment: AlignmentDirectional(-0.23, -0.92),
child: Padding(
padding: EdgeInsetsDirectional.fromSTEB(8, 24, 8, 24),
child: Row(
mainAxisSize: MainAxisSize.max,
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Container(
width: 30,
height: 30,
decoration: BoxDecoration(
color:
FlutterFlowTheme.of(context).secondaryBackground,
borderRadius: BorderRadius.circular(12),
),
child: InkWell(
onTap: () async {
Navigator.pop(context);
},
child: Icon(
Icons.chevron_left,
color: Colors.black,
size: 24,
),
),
),
Text(
'Try On',
style: FlutterFlowTheme.of(context).bodyText1,
),
Container(
width: 30,
height: 30,
decoration: BoxDecoration(
color:
FlutterFlowTheme.of(context).secondaryBackground,
borderRadius: BorderRadius.circular(12),
),
child: Icon(
Icons.share_outlined,
color: Colors.black,
size: 24,
),
),
],
),
),
),
Align(
alignment: AlignmentDirectional(0, 0.95),
child: Container(
width: 50,
height: 50,
decoration: BoxDecoration(
color: FlutterFlowTheme.of(context).secondaryBackground,
borderRadius: BorderRadius.circular(12),
),
child: Icon(
Icons.photo_camera,
color: Colors.black,
size: 24,
),
),
),
],
),
),
),
);
}
I want to put the camera in the background and put other widgets (such as photo-taking-button) on top of it.
How do I reposition it into a container? At least under the App Bar?
Logically this should have worked, what i would suggest you try would be to first have a SafeArea widget.
SafeArea(
child: build(buildContext),
),
I had a similar issue in the past and using this solved it.
Also, there seems to be an open issue which seems related to this with the following possible solution :
With Flutter 2.10.5. it works without problems. This seems to be a Flutter 3 problem.
The way platforms views are rendered was changed in the 3.0 release.
probably same issue:
flutter/flutter#106246
explained here:
flutter/flutter#103630
I hope this will be fixed in new Flutter 3 releases soon.
And also this
I try the master channel Flutter v3.1.0-0.0.pre.1372 and the issue is fixed there.
Fixed will come to a stable channel soon with Flutter v3.1.0.
Also, I am not sure why are you using SizedBox as your parent widget.
Why not try a basic Container instead?
Good luck, Let me know if I can help with anything else
I have a problem with the Stack Widget.
I have a Stack that contains two children: an Image wrapped with GestureDetector and a Container
. When i click anywhere on the Container, whoever is last on the Stack children list his onTap
I am extremely new to flutter.
Screenshot of the screen
this code
sonItem(dynamic icon ,String text,Color color){
return GestureDetector(
onTap: () {
print("dddddddddddddddd");
},
child: Container(
width: 70,
height: 100,
margin: EdgeInsets.all(2),
padding: EdgeInsets.all(2),
child: Column(
children: [
Icon(icon ,color: color,),
Text(text)
],
),
),
);
}
I Have a problem with the Stack Widget.
I have a Stack that contains two children: an Image wrapped with GestureDetector and an Container
. When i click anywhere on the Container , whoever is last on the Stack children list his onTap
body: Container(
color: Colors.white,
child: SingleChildScrollView(
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Container(
color: Color(0xffF0F0F0),
height: 200,
child: Stack(
overflow: Overflow.visible,
alignment: Alignment.center,
children: [
Positioned(
bottom: -170.0,
child: Container(
padding: EdgeInsets.only(top: 40 , right: 10, left: 10),
height: 250,
decoration: BoxDecoration(
color: Color(0xffFFFFFF),
borderRadius: BorderRadius.circular(30),
border: Border.all(
width: 1,
color: Colors.black,
style: BorderStyle.solid,
),
),
child: Column(
children: [
Text('company',
textAlign: TextAlign.center,
style: TextStyle(
fontSize: 24,
color: Colors.black,
),
),
Text("The number 2000"),
RatingBar(
rating: 3,
icon:Icon(Icons.star,size:20,color: Colors.grey,),
starCount: 5,
spacing: 5.0,
size: 20,
isIndicator: false,
allowHalfRating: true,
onRatingCallback: (double value,ValueNotifier<bool> isIndicator){
print('Number of stars--> $value');
//change the isIndicator from false to true ,the RatingBar cannot support touch event;
isIndicator.value=true;
},
color: Colors.amber,
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
sonItem(Icons.phone,"call us",Colors.green),
sonItem(Icons.location_on_outlined,"location",Colors.red),
sonItem(Icons.facebook,"FaceBook",Colors.blue),
sonItem(Icons.add_ic_call_outlined,"whatsapp",Colors.green)
],
)
],),
)),
Try below code hope its help to you
Stack(
children: <Widget>[
//your InkWell or GestureDetector Widget
InkWell(
child: Container(
// your child Widget
),
onTap: () {},
),
Positioned(),
]
),
The problem is solved when I delete bottom: -170.0,
But I need it in the design
I figured I can draw ripple over an image by enclosing the image in Ink(decoration: BoxDecoration(image: ...)), but how can I do the same for Text?
This is supposed to be a card with an image on top and a title and some other information at the bottom:
#override
Widget build(BuildContext context) {
final theme = Theme.of(context);
final post = _postModel.post;
return Material(
color: theme.colorScheme.background,
child: InkWell(
onTap: () {},
splashColor: Colors.red,
child: Container(
padding: EdgeInsets.symmetric(horizontal: 10, vertical: 5),
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.stretch,
children: <Widget>[
if (post.imageUri != null)
// This image IS covered by the ripple (what I need)
AspectRatio(
aspectRatio: 5 / 3,
child: Ink(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(3),
image: DecorationImage(
image: NetworkImage('https://picsum.photos/700'),
fit: BoxFit.cover,
),
),
),
),
// This must be underneath the ripple, but isn't.
Text(post.title, style: theme.textTheme.headline5),
Container(
padding: EdgeInsets.symmetric(horizontal: 0, vertical: 5),
color: Colors.transparent,
height: 60,
child: Row(
children: <Widget>[
// This is also covered by the ripple
Ink(
height: 35,
width: 35,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(3),
image: DecorationImage(
fit: BoxFit.cover,
image: NetworkImage('https://picsum.photos/100'),
),
),
),
SizedBox(width: 5),
// This must be underneath the ripple but isn't
Ink(
// decoration: Decoration,
child: Text(
post.author,
style: theme.textTheme.caption,
),
),
Spacer(),
],
),
),
],
),
),
),
);
}
When I press, the ripple covers both images as expected, however, I can't figure out how to make the ripple cover the text widgets as well. I tried wrapping the text in an Ink widget (the last one), but it doesn't work - the text is still displayed over the ripple.
Unpressed:
Pressed (the text is visible):
I've been doing some research for an upcoming project and would like to render the camera view behind a custom shape/semi-transparent img to act as a guide when taking pictures.
Does anyone know of a flutter camera plugin or tutorial that explains how to do this?
You can use the camera Plugin for flutter by the Flutter team.
https://pub.dartlang.org/packages/camera
and then position your image and you cameraview in a Stack Widget like this:
return new Stack(
alignment: FractionalOffset.center,
children: <Widget>[
new Positioned.fill(
child: new AspectRatio(
aspectRatio: controller.value.aspectRatio,
child: new CameraPreview(controller)),
),
new Positioned.fill(
child: new Opacity(
opacity: 0.3,
child: new Image.network(
'https://picsum.photos/3000/4000',
fit: BoxFit.fill,
),
),
),
],
);
Please visit this repo. This example uses the camera plugin.
new AspectRatio(
aspectRatio: controller.value.aspectRatio,
child: Container(
child: Stack(
children: <Widget>[
CameraPreview(controller),
Align(
alignment: Alignment.bottomCenter,
child: Container(
width: double.infinity,
height: 120.0,
padding: EdgeInsets.all(20.0),
color: Color.fromRGBO(00, 00, 00, 0.7),
child: Stack(
children: <Widget>[
Align(
alignment: Alignment.center,
child: Material(
color: Colors.transparent,
child: InkWell(
borderRadius: BorderRadius.all(Radius.circular(50.0)),
onTap: () {
_captureImage();
},
child: Container(
padding: EdgeInsets.all(4.0),
child: Image.asset(
'assets/images/ic_shutter_1.png',
width: 72.0,
height: 72.0,
),
),
),
),
),
Align(
alignment: Alignment.centerRight,
child: Material(
color: Colors.transparent,
child: InkWell(
borderRadius: BorderRadius.all(Radius.circular(50.0)),
onTap: () {
if (!_toggleCamera) {
onCameraSelected(widget.cameras[1]);
setState(() {
_toggleCamera = true;
});
} else {
onCameraSelected(widget.cameras[0]);
setState(() {
_toggleCamera = false;
});
}
},
child: Container(
padding: EdgeInsets.all(4.0),
child: Image.asset(
'assets/images/ic_switch_camera_3.png',
color: Colors.grey[200],
width: 42.0,
height: 42.0,
),
),
),
),
),
],
),
),
),
],
),
),
);
.
You can also now use this plugin :
CamerAwesome
Official plugin has a ratio bug that makes overlay having bad ratio.
This plugin includes flash, zoom, auto focus... and no initialisation required.
You can check full code on my page
https://github.com/Prashantm111/flutter-camera-inscreen-app