Below is my code which I expect to render a round-corner container with a transparent background.
return new Container(
//padding: const EdgeInsets.all(32.0),
height: 800.0,
//color: const Color(0xffDC1C17),
//color: const Color(0xffFFAB91),
decoration: new BoxDecoration(
color: Colors.green, //new Color.fromRGBO(255, 0, 0, 0.0),
borderRadius: new BorderRadius.only(
topLeft: const Radius.circular(40.0),
topRight: const Radius.circular(40.0))
),
child: new Container(
decoration: new BoxDecoration(
color: Colors.blue,
borderRadius: new BorderRadius.only(
topLeft: const Radius.circular(40.0),
topRight: const Radius.circular(40.0))
),
child: new Center(
child: new Text("Hi modal sheet"),
)
),
However this is what it renders, it renders a white container (expected transparent) with a round corner radius. Any help?
If you wrap your Container with rounded corners inside of a parent with the background color set to Colors.transparent I think that does what you're looking for. If you're using a Scaffold the default background color is white. Change that to Colors.transparent if that achieves what you want.
new Container(
height: 300.0,
color: Colors.transparent,
child: new Container(
decoration: new BoxDecoration(
color: Colors.green,
borderRadius: new BorderRadius.only(
topLeft: const Radius.circular(40.0),
topRight: const Radius.circular(40.0),
)
),
child: new Center(
child: new Text("Hi modal sheet"),
)
),
),
If you want to round corners with transparent background, the best approach is using ClipRRect.
return ClipRRect(
borderRadius: BorderRadius.circular(40.0),
child: Container(
height: 800.0,
width: double.infinity,
color: Colors.blue,
child: Center(
child: new Text("Hi modal sheet"),
),
),
);
As of May 1st 2019, use BottomSheetTheme.
MaterialApp(
theme: ThemeData(
// Draw all modals with a white background and top rounded corners
bottomSheetTheme: BottomSheetThemeData(
backgroundColor: Colors.white,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.vertical(top: Radius.circular(10))
)
)
),
Introduced recently, using a theme to control the sheets style should be the best route.
If you want to theme different bottom sheets differently, include a new Theme object in the appropriate subtree to override the bottom sheet theme just for that area.
If for some reason you'd still like to override the theme manually when launching a bottom sheet, showBottomSheet and showModalBottomSheet now have a backgroundColor parameter. Use it like this:
showModalBottomSheet(
backgroundColor: Colors.transparent,
context: context,
builder: (c) {return NavSheet();},
);
/// Create the bottom sheet UI
Widget bottomSheetBuilder(){
return Container(
color: Color(0xFF737373), // This line set the transparent background
child: Container(
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.only(
topLeft: Radius.circular(16.0),
topRight: Radius.circular( 16.0)
)
),
child: Center( child: Text("Hi everyone!"),)
),
);
}
Call this to show the BotoomSheet with corners:
/// Show the bottomSheet when called
Future _onMenuPressed() async {
showModalBottomSheet(
context: context,
builder: (widgetBuilder) => bottomSheetBuilder()
);
}
It's an old question. But for those who come across this question...
The white background behind the rounded corners is not actually the container. That is the canvas color of the app.
TO FIX: Change the canvas color of your app to Colors.transparent
Example:
return new MaterialApp(
title: 'My App',
theme: new ThemeData(
primarySwatch: Colors.green,
canvasColor: Colors.transparent, //----Change to this------------
accentColor: Colors.blue,
),
home: new HomeScreen(),
);
Scaffold(
appBar: AppBar(
title: Text('BMI CALCULATOR'),
),
body: Container(
height: 200,
width: 170,
margin: EdgeInsets.all(15),
decoration: BoxDecoration(
color: Color(
0xFF1D1E33,
),
borderRadius: BorderRadius.circular(5),
),
),
);
Use transparent background color for the modalbottomsheet and give separate color for box decoration
showModalBottomSheet(
backgroundColor: Colors.transparent,
context: context, builder: (context) {
return Container(
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.only(
topLeft:Radius.circular(40) ,
topRight: Radius.circular(40)
),
),
padding: EdgeInsets.symmetric(vertical: 20,horizontal: 60),
child: Settings_Form(),
);
});
showModalBottomSheet(
context: context,
builder: (context) => Container(
color: Color(0xff757575), //background color
child: new Container(
decoration: new BoxDecoration(
color: Colors.blue,
borderRadius: new BorderRadius.only(
topLeft: const Radius.circular(40.0),
topRight: const Radius.circular(40.0))
),
child: new Center(
child: new Text("Hi modal sheet"),
)
),
)
This is will make your container color the same as the background color. And there will be a child container of the same height-width with blue color.
This will make the corner with the same color as the background color.
Three related packages for covering this issue with many advanced options are:
sliding_up_panel
modal_bottom_sheet
sliding_panel
class MyApp2 extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
theme: ThemeData(
appBarTheme: AppBarTheme(
elevation: 0,
color: Colors.blueAccent,
)
),
title: 'Welcome to flutter ',
home: HomePage()
);
}
}
class HomePage extends StatefulWidget {
#override
_HomePageState createState() => _HomePageState();
}
class _HomePageState extends State<HomePage> {
int number = 0;
void _increment(){
setState(() {
number ++;
});
}
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.blueAccent,
appBar: AppBar(
title: Text('MyApp2'),
leading: Icon(Icons.menu),
// backgroundColor: Colors.blueAccent,
),
body: Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.only(
topLeft: Radius.circular(200.0),
topRight: Radius.circular(200)
),
color: Colors.white,
),
)
);
}
}
If both containers are siblings and the bottom container has rounded corners
and the top container is dynamic then you will have to use the stack widget
Stack(
children: [
/*your_widget_1*/,
/*your_widget_2*/,
],
);
Related
I have been trying to create a raised button with a rounded corner, and gradient background but to no success. I can only implement one or the other. It's been 2 hours and I haven't found a solution myself, on how I can implement both a rounded corner, and a gradient background together.
Below are my codes of my latest attempt to implement a raised button with rounded corner, and gradient background.
Custom class of GradientButton
class RaisedGradientButton extends StatelessWidget {
final Widget child;
final Gradient gradient;
final double width;
final double height;
final Function onPressed;
const RaisedGradientButton({
Key key,
#required this.child,
this.gradient,
this.width = double.infinity,
this.height = 50.0,
this.onPressed,
}) : super(key: key);
#override
Widget build(BuildContext context) {
return Container(
width: width,
height: 50.0,
decoration: BoxDecoration(
gradient: new LinearGradient(
colors: [
Colors.blue,
Colors.red,
],
begin: FractionalOffset.centerLeft,
end: FractionalOffset.centerRight,
),
),
child: Material(
shape: new RoundedRectangleBorder(
borderRadius: new BorderRadius.circular(128.0)),
// color: Colors.transparent,
child: InkWell(
onTap: onPressed,
child: Center(
child: child,
)),
),
);
}
}
How I use the above code:
RaisedGradientButton(
onPressed: navigateToNextPage,
child: Text("Select Community"),
)
How it looks like:
As you can see, the gradient is there, but when I attempt to create a rounded corner, it overlaps, and the gradient is behind.
There is a simple solution. Add the same border radius to both the button and the container inside the button. Here is a simple example.
RaisedButton(
onPressed: () {},
textColor: Colors.white,
color: Colors.transparent,
padding: EdgeInsets.all(0),
shape: RoundedRectangleBorder(
borderRadius: new BorderRadius.circular(18.0),
),
child: Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(18),
gradient: LinearGradient(
colors: <Color>[
Colors.black38,
Colors.black26,
Colors.white38,
],
),
),
padding: const EdgeInsets.fromLTRB(24, 12, 24, 12),
child: const Text('Sign In', style: TextStyle(fontSize: 20)),
),
),
I suggest you put a Container with a gradient below the button in a Stack and cut its corners with ClipRRect while leaving the button's color transparent. This way you keep touch feedback and pressed button shadow, as well as accessibility support.
class RaisedGradientButton extends StatelessWidget {
final Widget child;
final Gradient gradient;
final double width;
final double height;
final Function onPressed;
final borderRadius = BorderRadius.circular(128.0);
RaisedGradientButton({
Key key,
#required this.child,
Gradient gradient,
this.width = double.infinity,
this.height = 50.0,
this.onPressed,
}) : this.gradient = gradient ??
LinearGradient(
colors: [
Colors.blue,
Colors.red,
],
begin: FractionalOffset.centerLeft,
end: FractionalOffset.centerRight,
),
super(key: key);
#override
Widget build(BuildContext context) => Stack(
children: [
Positioned.fill(
child: ClipRRect(
borderRadius: borderRadius,
child: Container(
width: width,
height: height,
decoration: BoxDecoration(
gradient: gradient,
),
),
),
),
Container(
width: width,
height: height,
child: RaisedButton(
shape: RoundedRectangleBorder(
borderRadius: borderRadius,
),
padding: EdgeInsets.zero,
child: Center(child: child),
onPressed: onPressed,
color: Colors.transparent,
),
),
],
);
}
If anyone ever encounters the same issue. Here is my code on how I got it solved.
class GradientButton extends StatelessWidget {
final Widget child;
// final Gradient gradient;
final double width;
final double height;
final bool isEnabled;
final Function onPressed;
const GradientButton({
Key key,
#required this.child,
// this.gradient,
this.isEnabled,
this.width,
this.height,
this.onPressed,
}) : super(key: key);
#override
Widget build(BuildContext context) {
Color _statusColor;
if (isEnabled != null) {
// Show gradient color by making material widget transparent
if (isEnabled == true) {
_statusColor = Colors.transparent;
} else {
// Show grey color if isEnabled is false
_statusColor = Colors.grey;
}
} else {
// Show grey color if isEnabled is null
_statusColor = Colors.transparent;
}
return Container(
width: width,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(8),
gradient: LinearGradient(
colors: [
Color(0xFF3186E3),
Color(0xFF1D36C4),
],
begin: FractionalOffset.centerLeft,
end: FractionalOffset.centerRight,
),
),
child: Material(
shape: RoundedRectangleBorder(
borderRadius: new BorderRadius.circular(4)),
color: _statusColor,
child: InkWell(
borderRadius: BorderRadius.circular(32),
onTap: onPressed,
child: Padding(
padding: EdgeInsets.fromLTRB(24, 16, 24, 16),
child: Center(
child: child,
),
))),
);
}
}
Use ElevatedButton (Recommended as of Flutter 2.0)
#override
Widget build(BuildContext context) {
final radius = BorderRadius.circular(20);
return Scaffold(
body: Center(
child: DecoratedBox(
decoration: BoxDecoration(
gradient: LinearGradient(colors: [Colors.cyanAccent, Colors.red]),
borderRadius: radius,
),
child: ElevatedButton(
onPressed: () {},
child: Text('Elevated Button'),
style: ElevatedButton.styleFrom(
backgroundColor: Colors.transparent,
shape: RoundedRectangleBorder(borderRadius: radius),
),
),
),
),
);
}
I have added AppBar in my flutter application. My screen already have a background image, where i don't want to set appBar color or don't want set separate background image to appBar.
I want show same screen background image to appBar also.
I already tried by setting appBar color as transparent but it shows color like gray.
Example code:
appBar: new AppBar(
centerTitle: true,
// backgroundColor: Color(0xFF0077ED),
elevation: 0.0,
title: new Text(
"DASHBOARD",
style: const TextStyle(
color: const Color(0xffffffff),
fontWeight: FontWeight.w500,
fontFamily: "Roboto",
fontStyle: FontStyle.normal,
fontSize: 19.0
)),
)
This is supported by Scaffold now (in stable - v1.12.13+hotfix.5).
Set Scaffold extendBodyBehindAppBar to true,
Set AppBar elevation to 0 to get rid of shadow,
Set AppBar backgroundColor transparency as needed.
#override
Widget build(BuildContext context) {
return Scaffold(
extendBodyBehindAppBar: true,
backgroundColor: Colors.red,
appBar: AppBar(
// backgroundColor: Colors.transparent,
backgroundColor: Color(0x44000000),
elevation: 0,
title: Text("Title"),
),
body: Center(child: Text("Content")),
);
}
you can use Stack widget to do so. Follow below example.
import 'package:flutter/material.dart';
void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return new MaterialApp(
home: new Home(),
);
}
}
class Home extends StatefulWidget {
#override
_HomeState createState() => _HomeState();
}
class _HomeState extends State<Home> {
#override
Widget build(BuildContext context) {
return Scaffold(
body: Stack(
children: <Widget>[
Scaffold(
backgroundColor: Colors.transparent,
appBar: new AppBar(
title: new Text(
"Hello World",
style: TextStyle(color: Colors.amber),
),
backgroundColor: Colors.transparent,
elevation: 0.0,
),
body: new Container(
color: Colors.red,
),
),
],
),
);
}
}
You can use Scaffold's property "extendBodyBehindAppBar: true"
Don't forget to wrap child with SafeArea
#Override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(
widget.title,
style: TextStyle(color: Colors.black),
),
backgroundColor: Colors.transparent,
elevation: 0.0,
),
extendBodyBehindAppBar: true,
body: Container(
width: double.infinity,
height: double.infinity,
decoration: BoxDecoration(
image: DecorationImage(
image: AssetImage('assets/background/home.png'),
fit: BoxFit.cover,
),
),
child: SafeArea(
child: Center(
child: Container(
width: 300,
height: 300,
decoration: BoxDecoration(
color: Colors.green,
),
child: Center(child: Text('Test')),
),
)),
),
);
}
None of these seem to work for me, mine went something like this:
return Scaffold(
extendBodyBehindAppBar: true,
appBar: AppBar(
backgroundColor: Colors.transparent,
iconTheme: IconThemeData(color: Colors.white),
elevation: 0.0,
),
body: Stack(
children: <Widget>[
Container(
decoration: BoxDecoration(
image: DecorationImage(
image: NetworkImage(
'https://images.unsplash.com/photo-1517030330234-94c4fb948ebc?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1275&q=80'),
fit: BoxFit.cover,
),
),
child: Padding(
padding: const EdgeInsets.fromLTRB(0, 100, 0, 0),
child:
// Column of widgets here...
),
),
],
),
);
Output:
A lot of answers but nobody explains why extendBodyBehindAppBar works?
It works because when we assigned extendBodyBehindAppBar as true, then the body of the widget takes the height of AppBar, and we see an image covering the AppBar area.
Simple Example:
Size size = MediaQuery.of(context).size;
return Scaffold(
extendBodyBehindAppBar: true,
body: Container(
// height: size.height * 0.3,
child: Image.asset(
'shopping_assets/images/Fruits/pineapple.png',
fit: BoxFit.cover,
height: size.height * 0.4,
width: size.width,
),
),
);
There could be many cases, for example, do you want to keep the AppBar or not, whether or not you want to make the status bar visible, for that, you can wrap Scaffold.body in SafeArea and if you want AppBar to not have any shadow (unlike the red I provided in example 2), you can set its color to Colors.transparent:
Full image (without AppBar)
Scaffold(
extendBodyBehindAppBar: true,
body: SizedBox.expand(
child: Image.network(
'https://wallpaperaccess.com/full/3770388.jpg',
fit: BoxFit.cover,
),
),
)
Full image (with AppBar)
Scaffold(
extendBodyBehindAppBar: true,
appBar: AppBar(
backgroundColor: Colors.transparent,
shadowColor: Colors.red,
title: Text('MyApp'),
),
body: SizedBox.expand(
child: Image.network(
'https://wallpaperaccess.com/full/3770388.jpg',
fit: BoxFit.cover,
),
),
)
that's what I did and it's working
This is supported by Scaffold now (in stable - v1.12.13+hotfix.5).
Set Scaffold extendBodyBehindAppBar to true,
Set AppBar elevation to 0 to get rid of shadow,
Set AppBar backgroundColor transparency as needed.
Best regards
Scaffold(extendBodyBehindAppBar: true);
In my case I did it as follows:
Additional create an app bar with a custom back button (in this case with a FloatingActionButton). You can still add widgets inside the Stack.
class Home extends StatefulWidget {
#override
_EditProfilePageState createState() => _EditProfilePageState();
}
class _HomeState extends State< Home > {
#override
Widget build(BuildContext context) {
return Scaffold(
body: Stack(
children: <Widget>[
this._backgroundImage(), // --> Background Image
Positioned( // --> App Bar
child: AppBar(
backgroundColor: Colors.transparent,
elevation: 0.0,
leading: Padding( // --> Custom Back Button
padding: const EdgeInsets.all(8.0),
child: FloatingActionButton(
backgroundColor: Colors.white,
mini: true,
onPressed: this._onBackPressed,
child: Icon(Icons.arrow_back, color: Colors.black),
),
),
),
),
// ------ Other Widgets ------
],
),
);
}
Widget _backgroundImage() {
return Container(
height: 272.0,
width: MediaQuery.of(context).size.width,
child: FadeInImage(
fit: BoxFit.cover,
image: NetworkImage(
'https://images.unsplash.com/photo-1527555197883-98e27ca0c1ea?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&w=1000&q=80'),
placeholder: AssetImage('assetName'),
),
);
}
void _onBackPressed() {
Navigator.of(context).pop();
}
}
In the following link you can find more information Link
You can Try this This code work for me
#override
Widget build(BuildContext context) {
_buildContext = context;
sw = MediaQuery.of(context).size.width;
sh = MediaQuery.of(context).size.height;
return new Container(
child: new Stack(
children: <Widget>[
new Container(
child: Stack(
children: <Widget>[
Container(
padding: EdgeInsets.all(20.0),
decoration: BoxDecoration(image: backgroundImage),
),
],
),
),
new Scaffold(
backgroundColor: Colors.transparent,
appBar: new AppBar(
title: new Text(Strings.page_register),
backgroundColor: Colors.transparent,
elevation: 0.0,
centerTitle: true,
),
body: SingleChildScrollView(
padding: EdgeInsets.all(20.0),
physics: BouncingScrollPhysics(),
scrollDirection: Axis.vertical,
child: new Form(
key: _formKey,
autovalidate: _autoValidate,
child: FormUI(),
),
),
)
],
),
);
}
backgroundImage
DecorationImage backgroundImage = new DecorationImage(
image: new ExactAssetImage('assets/images/welcome_background.png'),
fit: BoxFit.cover,
);
use stack
set background image
Another Scaffold()
set background color transperant
set custom appbar
use column with singleChildScrollView or ListView
#override Widget build(BuildContext context) {
return Scaffold(
body: Stack(
children: <Widget>[
backgroundBGContainer(),
Scaffold(
backgroundColor: Colors.transparent,
appBar: appBarWidgetCustomTitle(context: context, titleParam: ""),
body: SingleChildScrollView(
child: Column(
children: <Widget>[
_spaceWdgt(),
Center(
child: Stack(
children: <Widget>[
new Image.asset(
"assets/images/user_icon.png",
width: 117,
height: 97,
),
],
),
),
Widget backgroundBGContainer() {
return Container(
decoration: new BoxDecoration(
image: new DecorationImage(
image: new AssetImage("assets/images/ground_bg_image.png"),
fit: BoxFit.cover,
),
color: MyColor().groundBackColor),
);
}
don't forget to set foregroundColor attribite to the desired color in order to make the navigation icon and the title visible
Note that the foregroundColor default value is white.
I am writing an app that needs to have a bottomsheet with corner radius. Something like you can see in the Google Task app.
Here is the code I have
showModalBottomSheet(
context: context,
builder: (builder) {
return new Container(
height: 350.0,
color: Colors.transparent,
child: new Container(
decoration: new BoxDecoration(
color: Colors.white,
borderRadius: new BorderRadius.only(
topLeft: const Radius.circular(10.0), topRight: const Radius.circular(10.0))),
child: new Center(
child: new Text("This is a modal sheet"),
)),
);
});
Is still shows the sheet without the border radius.
Okay, I found a reason. It is indeed displaying the rounded corner but the background of the Container is staying white due to Scaffold background color.
Now the question is how do I override the Scaffold background color.
For those who still trying to resolve this:
for some reasons Colors.transparent does not work, so all you need to do is change color to : Color(0xFF737373)
showModalBottomSheet(
context: context,
builder: (builder) {
return new Container(
height: 350.0,
color: Color(0xFF737373),
child: new Container(
decoration: new BoxDecoration(
color: Colors.white,
borderRadius: new BorderRadius.only(
topLeft: const Radius.circular(10.0), topRight: const Radius.circular(10.0))),
child: new Center(
child: new Text("This is a modal sheet"),
)),
);
});
use shape property inside show showModalBottomSheet and give it RoundedRectangleBorder.
showModalBottomSheet(
context: context,
shape : RoundedRectangleBorder(
borderRadius : BorderRadius.circular(20)
),
builder: (builder) {
return new Container(
height: 350.0,
color: Color(0xFF737373),
child: new Container(
child: new Center(
child: new Text("This is a modal sheet"),
)),
);
});
_settingModalBottomSheet(context) {
showModalBottomSheet(
context: context,
builder: (BuildContext bc){
return Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.only(
topLeft: Radius.circular(ScreenUtil().setWidth(16)),
topRight: Radius.circular(ScreenUtil().setWidth(16))
),
),
);
}
);
}
It looks like this:
result_1
After add below code in main.dart:
return MaterialApp(
theme: ThemeData(
canvasColor: Colors.transparent
),
);
It looks like this:
result_2
Use this code, it's working perfectly for me!
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(10.0))
Here is the full code.
showModalBottomSheet(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10.0),
),
context: context,
builder: (BuildContext bc) {
return StatefulBuilder(
builder: (BuildContext context, StateSetter state) {
return SingleChildScrollView(
child: InkWell(
onTap: () {},
child: Container(
margin:
EdgeInsets.only(left: 10, right: 10, bottom: 10),
child: Column(
mainAxisSize: MainAxisSize.max,
mainAxisAlignment: MainAxisAlignment.center,
children: Container()))));
});
});
Output:
Okay, so changing the canvasColor in my app's main theme to Colors.transparent worked.
USE ClipRRect Widget like below.
showMaterialModalBottomSheet(
backgroundColor: Colors.transparent,
context: context,
builder: (context, scrollController) =>
ClipRRect(
borderRadius: BorderRadius.circular(16),
child: Container(
height:
MediaQuery.of(context).size.height *
0.95,
child: whateverChild();
Use shape property.
showModalBottomSheet(
context: context,
shape: const RoundedRectangleBorder(
borderRadius: BorderRadius.only(
topRight: Radius.circular(40),
topLeft: Radius.circular(40),
),
),
builder: (builder) {
return new Container(
height: 350.0,
color: Colors.transparent,
child: YourWidget(),
});
You should also check the widgets on the sheet.
Even if the border is applied, it seems that other widgets fill the space and are not applied.
Use padding, etc. to secure the upper space of the seat.
main_screen file:
#override
Widget build(BuildContext context) {
return Scaffold(
key: _scaffoldKey,
body: Column(
children: [
InkWell(
onTap: () {
_scaffoldKey.currentState!
.showBottomSheet(
(context) => const AddItemBottomSheet(),
backgroundColor: Colors.transparent,
);
},
child: Column(children: [
const Icon(
Icons.add_circle_outline_rounded,
size: 32,
),
Text(
'Add Item',
),
]),
),
]
)
);
}
add_item_bottom_sheet.dart
class AddItemBottomSheet extends StatefulWidget {
const AddItemBottomSheet({Key? key}) : super(key: key);
#override
State<AddItemBottomSheet> createState() => _AddItemBottomSheetState();
}
class _AddItemBottomSheetState extends State<AddItemBottomSheet> {
#override
Widget build(BuildContext context) {
return Container(
width: double.infinity,
decoration: BoxDecoration(
color: Colors.white,
boxShadow: [
BoxShadow(
blurRadius: 60.0,
color: Colors.black.withOpacity(0.2),
spreadRadius: 50,
offset: const Offset(0.0, -10.0)),
],
borderRadius: const BorderRadius.only(
topLeft: Radius.circular(20.0),
topRight: Radius.circular(20.0),
),
),
child: SingleChildScrollView(
child: Padding(
padding: const EdgeInsets.all(20.0),
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
//Your UI items on BottomSheet
],
),
),
),
);
}
}
I had exactly the same issue when I was using the modal_bottom_sheet library. but after I set the backgroundColor to transparent... it worked like magic
showModalBottomSheet(
context: context,
backgroundColor: Colors.transparent, // Add this line of Code
builder: (builder) {
return new Container(
height: 350.0,
color: Colors.transparent,
child: new Container(
decoration: new BoxDecoration(
color: Colors.white,
borderRadius: new BorderRadius.only(
topLeft: const Radius.circular(10.0), topRight: const Radius.circular(10.0))),
child: new Center(
child: new Text("This is a modal sheet"),
)),
);
});
has anyone come across something like fadingEdgeLength in Android for Flutter so that when you scroll up items start fading into the top of the screen?
Below is my interface built up of the Widgets.
If it helps these are the properties I'm referring to:
android:fadingEdgeLength="10dp"
android:requiresFadingEdge="horizontal">
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('CMS Users'),
),
body: ListView.builder(
padding: EdgeInsets.only(top: 20.0, left: 4.0),
itemExtent: 70.0,
itemCount: data == null ? 0 : data.length,
itemBuilder: (BuildContext context, int index) {
return Card(
elevation: 10.0,
child: InkWell(
onTap: () {
Navigator.push(
context,
new MaterialPageRoute(
builder: (BuildContext context) =>
new PeopleDetails("Profile Page", profiles[index]),
));
},
child: ListTile(
leading: CircleAvatar(
child: Text(profiles[index].getInitials()),
backgroundColor: Colors.deepPurple,
radius: 30.0,
),
title: Text(
data[index]["firstname"] + "." + data[index]["lastname"]),
subtitle: Text(
data[index]["email"] + "\n" + data[index]["phonenumber"]),
),
),
);
}),
);
}
}
As others have mentioned, you can put the ListView under a ShaderMask, but with minor extra parameterizations you can get much better results - at least if you want to achieve what I wanted.
Optionally you can set the [stops] list for the LinearGradient:
The [stops] list, if specified, must have the same length as [colors]. It specifies fractions of the vector from start to end, between 0.0 and 1.0, for each color.
Plus: There are blend modes, where the color channels of the source are ignored, only the opacity has an effect. BlendMode.dstOut is also such in the example below. As you can see in the screenshot, the purple color is not used concretely, only for the fractions of the vector.
You can play with the different [blendMode] settings, there are quite a few of them.
void main() {
runApp(
MaterialApp(
home: Scaffold(
body: FadingListViewWidget(),
),
),
);
}
class FadingListViewWidget extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Center(
child: Container(
height: 320,
child: ShaderMask(
shaderCallback: (Rect rect) {
return LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
colors: [Colors.purple, Colors.transparent, Colors.transparent, Colors.purple],
stops: [0.0, 0.1, 0.9, 1.0], // 10% purple, 80% transparent, 10% purple
).createShader(rect);
},
blendMode: BlendMode.dstOut,
child: ListView.builder(
itemCount: 100,
itemBuilder: (BuildContext context, int index) {
return Card(
color: Colors.orangeAccent,
child: ListTile(
title: Text('test test test test test test'),
),
);
},
),
),
),
);
}
}
You could apply a ShaderMask on top of ListView and use BlendMode to get what you want.
Widget animationsList() {
return Expanded(
child: ShaderMask(
shaderCallback: (Rect bounds) {
return LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
colors: <Color>[Colors.transparent,Colors.red],
).createShader(bounds);
},
child: Container(height: 200.0, width: 200.0, color: Colors.blue,),
blendMode: BlendMode.dstATop,
),
);
I had similar request so I created a library for this task.
You can find it here: fading_edge_scrollview
To use it you need to add a ScrollController to your ListView and then pass this ListView as child to FadingEdgeScrollView.fromScrollView constructor
Wrap the Listview with Stack, add the Listview as the first child, the second is Positioned Container with LinearGradient.
Sample from my code:
Stack:
return Stack(
children: <Widget>[
ListView(
scrollDirection: Axis.horizontal,
children: _myListOrderByDate,
),
FadeEndListview(),
],
);
The overlay class:
class FadeEndListview extends StatelessWidget {
const FadeEndListview({
Key key,
}) : super(key: key);
#override
Widget build(BuildContext context) {
return Positioned(
right: 0,
width: 8.0,
height: kYoutubeThumbnailsHeight,
child: Container(
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.centerRight,
end: Alignment.centerLeft,
stops: [0.0, 1.0],
colors: [
Theme.of(context).scaffoldBackgroundColor,
Theme.of(context).scaffoldBackgroundColor.withOpacity(0.0),
],
),
),
),
);
}
}
And it will look something like this:
Try to use
Text(
'This is big text, I am using Flutter and trying to fade text',
overflow: TextOverflow.fade,
maxLines: 1,
),
I'm currently new to Flutter and Dart language and I'm trying to set a profile image to my leading attribute of my appBar.
So far I've got my image to be rounded, but I can't make it smaller nor put a margin to the left side.
Here's a snippet of my code:
#override
Widget build(BuildContext context) {
return new MaterialApp(
home: new Scaffold(
backgroundColor: Colors.blueGrey,
appBar: new AppBar(
title: new Text("Activities"),
leading: new Container(
padding: new EdgeInsets.all(15.0),
width: 10.0,
height: 10.0,
decoration: new BoxDecoration(
color: const Color(0xff7c94b6),
borderRadius: new BorderRadius.all(new Radius.circular(50.0)),
border: new Border.all(
color: Colors.white,
width: 1.0,
),
),
),
actions: <Widget>[
new IconButton(
icon: new Icon(Icons.refresh),
onPressed: () {
print("Reloading...");
setState(() {
_isLoading = true;
});
_FetchData();
},
)
],
),
// ...
And here's how it looks:
Click here
As you can see, my image is way too big and there's no margin to the left side...
How can I make the image smaller and most importantly, make a left margin similar to the refresh button right's margin?
Any help would be appreciated,
Have a good one.
Consider using Material combined with a shape: new CircleBorder() instead of manually creating a circle.
Or a CircleAvatar if that fits your needs.
Then add a Padding to control the size and margin.
return new Scaffold(
backgroundColor: Colors.blueGrey,
appBar: new AppBar(
title: new Text("Activities"),
leading: new Padding(
padding: const EdgeInsets.all(8.0),
child: new Material(
shape: new CircleBorder(),
),
),
),
);