Is possible to implement TextField in system_alert_window Fluttter? - android

I used system_alert_window this library for implement sytem alert window. I need a Textfield on this dialog.
How do we implement this ?
Or is there other way to bring textfield in System alert window ?
SystemWindowHeader header = SystemWindowHeader(
title: SystemWindowText(
text: "Incoming Call", fontSize: 10, textColor: Colors.black45),
padding: SystemWindowPadding.setSymmetricPadding(12, 12),
subTitle: SystemWindowText(
text: "9898989899",
fontSize: 14,
fontWeight: FontWeight.BOLD,
textColor: Colors.black87),
decoration: SystemWindowDecoration(startColor: Colors.grey[100]),
button: SystemWindowButton(
text: SystemWindowText(
text: "Spam", fontSize: 10, textColor: Colors.black45),
tag: "spam_btn"),
buttonPosition: ButtonPosition.TRAILING);
SystemWindowBody body = SystemWindowBody(
rows: [
EachRow(
columns: [
EachColumn(
text: SystemWindowText(
text: "Some body", fontSize: 12, textColor: Colors.black45),
),
],
gravity: ContentGravity.CENTER,
),
],
padding: SystemWindowPadding(left: 16, right: 16, bottom: 12, top: 12),
);
SystemWindowFooter footer = SystemWindowFooter(
buttons: [
SystemWindowButton(
text: SystemWindowText(
text: "Simple button", fontSize: 12, textColor: Colors.blue),
tag: "simple_button",
padding:
SystemWindowPadding(left: 10, right: 10, bottom: 10, top: 10),
width: 0,
height: SystemWindowButton.WRAP_CONTENT,
decoration: SystemWindowDecoration(
startColor: Colors.white,
endColor: Colors.white,
borderWidth: 0,
borderRadius: 0.0),
),
SystemWindowButton(
text: SystemWindowText(
text: "Focus button", fontSize: 12, textColor: Colors.white),
tag: "focus_button",
width: 0,
padding:
SystemWindowPadding(left: 10, right: 10, bottom: 10, top: 10),
height: SystemWindowButton.WRAP_CONTENT,
decoration: SystemWindowDecoration(
startColor: Colors.lightBlueAccent,
endColor: Colors.blue,
borderWidth: 0,
borderRadius: 30.0),
)
],
padding:
SystemWindowPadding(left: 16, right: 16, bottom: 12, top: 10),
decoration: SystemWindowDecoration(startColor: Colors.white),
buttonsPosition: ButtonPosition.CENTER);
SystemAlertWindow.showSystemWindow(
height: 230,
header: header,
body: body,
footer: footer,
margin: SystemWindowMargin(left: 8, right: 8, top: 200, bottom: 0),
gravity: SystemWindowGravity.TOP,
notificationTitle: "Incoming Call",
notificationBody: "+1 646 980 4741",
prefMode: prefMode,
backgroundColor: Colors.black12,
isDisableClicks: false);
setState(() {
_isShowingWindow = true;
});


I don't thing so.. but with alert dialog you can achieve this stuff like this
AlertDialog(
title: Text('TextField in Dialog'),
content: TextField(
onChanged: (value) { },
controller: _textFieldController,
decoration: InputDecoration(hintText: "Text Field in Dialog"),
),
),

Related

how do i align the icon totally in between the circular button?

Container(
height: 55,
width: 55,
decoration: const BoxDecoration(
shape: BoxShape.circle,
border: Border.symmetric(
horizontal: BorderSide(
color: Colors.black,
width: 2.0,
style: BorderStyle.solid,
),
vertical: BorderSide(
color: Colors.black,
width: 2.0,
style: BorderStyle.solid,
),
),
boxShadow: [
BoxShadow(
color: Colors.black,
offset: Offset(3.5, 3.5),
blurRadius: 0,
spreadRadius: -1,
),
]),
child: OutlinedButton(
onPressed: () {
_controller.forward();
widget.onPress();
},
style: const ButtonStyle(
alignment: Alignment.centerLeft,
backgroundColor: MaterialStatePropertyAll(Colors.white),
shape: MaterialStatePropertyAll(CircleBorder()),
),
child: const Icon(
Icons.view_carousel_outlined,
size: 35,
color: Colors.black,
),
),
),
as you can see the icon is not aligned properly ...
i have tried every method possible, i used stack, positioned, tried to give it a padding, margin etc. tried to put it in boxfit and tried everything else, any ideas why this is happening ?

Changing the alignment to Alignment.center and using EdgeInsets.zero worked fine for me.
Container(
height: 55,
width: 55,
decoration: const BoxDecoration(
shape: BoxShape.circle,
border: Border.symmetric(
horizontal: BorderSide(
color: Colors.black,
width: 2.0,
style: BorderStyle.solid,
),
vertical: BorderSide(
color: Colors.black,
width: 2.0,
style: BorderStyle.solid,
),
),
boxShadow: [
BoxShadow(
color: Colors.black,
offset: Offset(3.5, 3.5),
blurRadius: 0,
spreadRadius: -1,
),
],
),
child: OutlinedButton(
onPressed: () {
/* _controller.forward();
widget.onPress(); */
},
style: const ButtonStyle(
alignment: Alignment.center,
padding: MaterialStatePropertyAll(EdgeInsets.zero),
backgroundColor: MaterialStatePropertyAll(Colors.white),
shape: MaterialStatePropertyAll(CircleBorder()),
),
child: const Icon(
Icons.view_carousel_outlined,
size: 35,
color: Colors.black,
),
),
),

Ok, so i fixed it, basically removed a lot of styling in the container and styled the border in the outline button itself.
Here is the code:
Container(
decoration: const BoxDecoration(shape: BoxShape.circle, boxShadow: [
BoxShadow(
color: Colors.black,
offset: Offset(3.5, 3.5),
blurRadius: 0,
spreadRadius: -1,
),
]),
child: OutlinedButton(
onPressed: () {
_controller.forward();
widget.onPress();
},
style: const ButtonStyle(
side: MaterialStatePropertyAll(BorderSide(width: 2.0)),
padding: MaterialStatePropertyAll(EdgeInsets.all(20.0)),
backgroundColor: MaterialStatePropertyAll(Colors.white),
shape: MaterialStatePropertyAll(CircleBorder()),
),
child: const Icon(
Icons.view_carousel_outlined,
size: 35,
color: Colors.black,
),
),
),

OutlinedButton has its own constraints, margin, padding, tapTargetSize, visualDensity, hence, your child is not getting centered inside it.
So to achieve your desired UI snippet either modify this properties
OR
Wrap your Icon with Center and use InkWell for onTap() functionality
CODE:
Container(
height: 55,
width: 55,
decoration: const BoxDecoration(
color: Colors.white, //TODO: Add Color to Container
shape: BoxShape.circle,
border: Border.symmetric(
horizontal: BorderSide(
color: Colors.black,
width: 2.0,
style: BorderStyle.solid,
),
vertical: BorderSide(
color: Colors.black,
width: 2.0,
style: BorderStyle.solid,
),
),
boxShadow: [
BoxShadow(
color: Colors.black,
offset: Offset(3.5, 3.5),
blurRadius: 0,
spreadRadius: -1,
),
]),
child: InkWell( //TODO: Replace OutlinedButton with InkWell
onTap: () {
_controller.forward();
widget.onPress();
},
child: const Center( //TODO: Wrap Icon with Center
child: Icon(
Icons.view_carousel_outlined,
// size: 35,
color: Colors.black,
),
),
),
),
OUTPUT:

How to Implement Stack Correctly in Flutter?

Basically I'm new to Flutter and trying to make a design like this -
So I Tried Stack for this but couldn't make it perfect.
Here is my code and image
Stack(
children: [
Positioned(
child: Container(
height: 150,
width: 150,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10.0),
color: Colors.yellow,
),
),
),
Positioned(
child: Container(
height: 250,
width: 250,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10.0),
color: Colors.red,
),
),
top: 10,
left: 5,
right: 5,
),
],),

You will need to give proper positione to each and every Positioned widget.
This code will provide you output which you expact.
You can checkout interactive code here.
Stack(
children: [
Positioned(
left: 125,
top: 50,
child: Container(
height: 250,
width: 250,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10.0),
color: Colors.black,
),
),
),
Positioned(
left: 100,
top: 60,
child: Container(
height: 300,
width: 300,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10.0),
color: Colors.red,
),
),
),
Positioned(
left: 75,
top: 75,
child: Container(
height: 350,
width: 350,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(10.0),
color: Colors.yellow,
),
),
),
],
)

Please update your code with the below code. Here, I have fix the height only as device wise width could be changed. I have used Align widget to position the widget to bottom.
Stack(
children: [
Align(
alignment: Alignment.bottomCenter,
child: Container(
margin: const EdgeInsets.symmetric(horizontal: 90),
height: 160,
decoration: BoxDecoration(
borderRadius: BorderRadius.only(topLeft: Radius.circular(20), topRight: Radius.circular(20)),
color: Colors.greenAccent,
),
),
),
Align(
alignment: Alignment.bottomCenter,
child: Container(
margin: const EdgeInsets.symmetric(horizontal: 50),
height: 140,
decoration: BoxDecoration(
borderRadius: BorderRadius.only(topLeft: Radius.circular(15), topRight: Radius.circular(15)),
color: Colors.orange,
),
),
),
Align(
alignment: Alignment.bottomCenter,
child: Container(
margin: const EdgeInsets.symmetric(horizontal: 20, vertical: 0),
height: 120,
decoration: BoxDecoration(
borderRadius: BorderRadius.only(topLeft: Radius.circular(10), topRight: Radius.circular(10)),
color: Colors.limeAccent,
boxShadow: [
BoxShadow(
color: Colors.yellow,
offset: Offset(0.0, 1.0), //(x,y)
blurRadius: 5.0,
),
],
),
),
),
],)
It will look like this,

Rather then achieve it with Stack widget you can try this with Column widget like below
Column(
children: [
Container(
height: 20,
width: MediaQuery.of(context).size.width - 150,
decoration: BoxDecoration(/*as-per-your-requirement*/),
),
Container(
height: 20,
width: MediaQuery.of(context).size.width - 100,
decoration: BoxDecoration(/*as-per-your-requirement*/),
),
Container(
///this will be your main layout that user can completely see
width: MediaQuery.of(context).size.width - 50,
decoration: BoxDecoration(/*as-per-your-requirement*/),
child: /*as-per-your-requirement*/,
),
],
)

Stack(
children: [
Positioned(
top: -52.h,
left: -22.w,
child: Text(
"$position",
style: TextStyle(
fontWeight: FontWeight.w700,
fontSize: 200.sp,
color: Color(0x2007B4CF)),
)),
Positioned(
child: SvgPicture.asset(Res.ic_plan_lock),
top: 20.h,
right: 20.w,
),
Positioned(
top: 46.h,
left: 13.w,
right: 13.w,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
SvgPicture.asset(Res.ic_plan_secured),
SizedBox(
height: 10.h,
),
Text(
offer.offerName,
style: TextStyle(
fontWeight: FontWeight.w600,
fontSize: 14.sp,
color: ColorUtil.of(context).primaryDark),
),
SizedBox(
height: 12.h,
),
Text(
offer.offerText,
textAlign: TextAlign.center,
style: TextStyle(
fontWeight: FontWeight.w600,
fontSize: 14.sp,
color: Colors.black),
),
],
),
),
Positioned(
bottom: 20.h,
left: 20.h,
right: 20.h,
child: GestureDetector(
behavior: getDefaultGestureDetectorBehaviour(),
onTap: () {
onCtaClicked();
},
child: Container(
height: 31.h,
width: 159.w,
alignment: Alignment.center,
decoration: BoxDecoration(
color: Color(0xFF2D2D3D),
borderRadius: BorderRadius.circular(10.h)),
child: Text(
offer.route,
style: TextStyle(
color: ColorUtil.of(context).colorPrimaryLight,
fontSize: 14.sp,
fontWeight: FontWeight.w500),
),
),
))
],
),

Update button state when on specific slide of carousel slider

I currently have the problem that I can't figure out how to update the button state so that when I scroll on the second slide the right button is highlighted with the grey background. (I disabled scrolling for as long as I don't have a solution.)
CarouselController buttonCarouselController = CarouselController();
bool pressAttention = false;
bool pressAttention1 = true;
int _currentIndex = 1;
Padding(
padding: const EdgeInsets.fromLTRB(10, 20, 10, 0),
child: CarouselSlider(
carouselController: buttonCarouselController,
options: CarouselOptions(
enableInfiniteScroll: false,
initialPage: 0,
height: MediaQuery.of(context).size.height * 0.5,
enlargeCenterPage: true,
enlargeStrategy: CenterPageEnlargeStrategy.height,
viewportFraction: 1,
scrollPhysics: const NeverScrollableScrollPhysics(),
),
items: [
Container(
width: double.infinity,
height: double.infinity,
margin: const EdgeInsets.all(5.0),
decoration: BoxDecoration(
border: Border.all(
color: Colors.transparent,
),
boxShadow: [
BoxShadow(
color: Colors.grey.withOpacity(0.5),
spreadRadius: 1,
blurRadius: 2,
offset: const Offset(0, 2),
),
],
borderRadius: const BorderRadius.all(Radius.circular(20)),
color: Colors.white,
),
child: Padding(
padding: const EdgeInsets.fromLTRB(20, 0, 20, 0),
child: SingleChildScrollView(
child: Column(
children: [
Container(
width: 200,
height: 200,
child: Image.asset(
'assets/existenz.png',
),
),
Padding(
padding: const EdgeInsets.fromLTRB(0, 0, 0, 10),
child: AutoSizeText(
'Existenz',
maxLines: 2,
minFontSize: 20,
style: GoogleFonts.rubik(
fontWeight: FontWeight.bold,
color: Colors.black,
),
),
),
PhysicalShape(
clipper: ShapeBorderClipper(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15.0)
)
),
color: const Color.fromRGBO(160, 20, 35, 1),
child: Container(
height: 50,
width: 200,
child: TextButton(
onPressed: () {
print('Button pressed ...');
},
child: Padding(
padding: const EdgeInsets.fromLTRB(0, 0, 0, 0),
child: AutoSizeText(
'Beginnen',
maxLines: 3,
minFontSize: 17,
style: GoogleFonts.rubik(
color: Colors.white,
),
),
),
)
),
),
]
)
),
),
),
Container(
width: double.infinity,
height: double.infinity,
margin: const EdgeInsets.all(5.0),
decoration: BoxDecoration(
border: Border.all(
color: Colors.transparent,
),
boxShadow: [
BoxShadow(
color: Colors.grey.withOpacity(0.5),
spreadRadius: 1,
blurRadius: 2,
offset: const Offset(0, 2),
),
],
borderRadius: const BorderRadius.all(Radius.circular(20)),
color: Colors.white,
),
child: Padding(
padding: const EdgeInsets.fromLTRB(20, 0, 20, 0),
child: SingleChildScrollView(
child: Column(
children: [
Container(
width: 200,
height: 200,
child: Image.asset(
'assets/einfach.png',
),
),
Padding(
padding: const EdgeInsets.fromLTRB(0, 0, 0, 10),
child: AutoSizeText(
'Einfach',
maxLines: 2,
minFontSize: 20,
style: GoogleFonts.rubik(
fontWeight: FontWeight.bold,
color: Colors.black,
),
),
),
PhysicalShape(
clipper: ShapeBorderClipper(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(15.0)
)
),
color: const Color.fromRGBO(160, 20, 35, 1),
child: Container(
height: 50,
width: 200,
child: TextButton(
onPressed: () {
print('Button pressed ...');
},
child: Padding(
padding: const EdgeInsets.fromLTRB(0, 0, 0, 0),
child: AutoSizeText(
'Beginnen',
maxLines: 3,
minFontSize: 17,
style: GoogleFonts.rubik(
color: Colors.white,
),
),
),
)
),
),
]
)
),
),
),
]
),
),
const Divider(
height: 10,
thickness: 1,
color: Color.fromRGBO(250, 250, 250, 1)
),
Padding(
padding: const EdgeInsets.symmetric(vertical: 0, horizontal: 0),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
PhysicalShape(
clipper: ShapeBorderClipper(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(50.0)
)
),
color: pressAttention1 ? const Color.fromRGBO(230, 230, 230, 1) : const Color.fromRGBO(250, 250, 250, 1),
child: Container(
height: 30,
width: 75,
child: TextButton(
onPressed: () => [buttonCarouselController.previousPage(
duration: const Duration(milliseconds: 300), curve: Curves.linear),setState(() => pressAttention1 = !pressAttention1), pressAttention1=true, pressAttention=false, print(_currentIndex)],
child: Text(
"Existenz",
style: GoogleFonts.rubik(
color: Colors.black,
fontSize: 14,
)
)
)
),
),
PhysicalShape(
clipper: ShapeBorderClipper(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(50.0)
)
),
color: pressAttention ? const Color.fromRGBO(230, 230, 230, 1) : const Color.fromRGBO(250, 250, 250, 1),
child: Container(
height: 30,
width: 75,
child: TextButton(
onPressed: () => [buttonCarouselController.nextPage(
duration: const Duration(milliseconds: 300), curve: Curves.linear),setState(() => pressAttention = !pressAttention), pressAttention=true, pressAttention1=false, print(_currentIndex)],
child: Text(
"Einfach",
style: GoogleFonts.rubik(
color: Colors.black,
fontSize: 14,
)
)
)
),
),
Any help would be greatly appreciated, thanks in advance.

if you want to save button state you should observe any widget state with inherited widget or state management package ex: provider, riverpod or bloc ...

How to implement draw over other app functionality in react native. user should not be able to open other app until he types password

I want to create an app that won't allow the user to open any other app until he enters the correct password that he set. My end goal is to create an android application (no matter React Native, Flutter or Android)
I am looking for a react-native library for the same

For flutter, use this plugin. It allows you to show a popup on top of all the apps.
https://pub.dev/packages/system_alert_window
Example
import 'package:flutter/material.dart';
import 'dart:async';
import 'package:flutter/services.dart';
import 'package:system_alert_window/system_alert_window.dart';
void main() {
WidgetsFlutterBinding.ensureInitialized();
runApp(MyApp());
}
///
/// Whenever a button is clicked, this method will be invoked with a tag (As tag is unique for every button, it helps in identifying the button).
/// You can check for the tag value and perform the relevant action for the button click
///
void callBack(String tag) {
WidgetsFlutterBinding.ensureInitialized();
print(tag);
switch (tag) {
case "simple_button":
case "updated_simple_button":
SystemAlertWindow.closeSystemWindow(prefMode: SystemWindowPrefMode.OVERLAY);
break;
case "focus_button":
print("Focus button has been called");
break;
default:
print("OnClick event of $tag");
}
}
class MyApp extends StatefulWidget {
#override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
String _platformVersion = 'Unknown';
bool _isShowingWindow = false;
bool _isUpdatedWindow = false;
SystemWindowPrefMode prefMode = SystemWindowPrefMode.OVERLAY;
#override
void initState() {
super.initState();
_initPlatformState();
_requestPermissions();
SystemAlertWindow.registerOnClickListener(callBack);
}
// Platform messages are asynchronous, so we initialize in an async method.
Future<void> _initPlatformState() async {
String platformVersion;
// Platform messages may fail, so we use a try/catch PlatformException.
try {
platformVersion = await SystemAlertWindow.platformVersion;
} on PlatformException {
platformVersion = 'Failed to get platform version.';
}
// If the widget was removed from the tree while the asynchronous platform
// message was in flight, we want to discard the reply rather than calling
// setState to update our non-existent appearance.
if (!mounted) return;
setState(() {
_platformVersion = platformVersion;
});
}
Future<void> _requestPermissions() async {
await SystemAlertWindow.requestPermissions(prefMode: prefMode);
}
void _showOverlayWindow() {
if (!_isShowingWindow) {
SystemWindowHeader header = SystemWindowHeader(
title: SystemWindowText(text: "Incoming Call", fontSize: 10, textColor: Colors.black45),
padding: SystemWindowPadding.setSymmetricPadding(12, 12),
subTitle: SystemWindowText(text: "9898989899", fontSize: 14, fontWeight: FontWeight.BOLD, textColor: Colors.black87),
decoration: SystemWindowDecoration(startColor: Colors.grey[100]),
button: SystemWindowButton(text: SystemWindowText(text: "Personal", fontSize: 10, textColor: Colors.black45), tag: "personal_btn"),
buttonPosition: ButtonPosition.TRAILING);
SystemWindowBody body = SystemWindowBody(
rows: [
EachRow(
columns: [
EachColumn(
text: SystemWindowText(text: "Some body", fontSize: 12, textColor: Colors.black45),
),
],
gravity: ContentGravity.CENTER,
),
EachRow(columns: [
EachColumn(
text: SystemWindowText(text: "Long data of the body", fontSize: 12, textColor: Colors.black87, fontWeight: FontWeight.BOLD),
padding: SystemWindowPadding.setSymmetricPadding(6, 8),
decoration: SystemWindowDecoration(startColor: Colors.black12, borderRadius: 25.0),
margin: SystemWindowMargin(top: 4)),
], gravity: ContentGravity.CENTER),
EachRow(
columns: [
EachColumn(
text: SystemWindowText(text: "Notes", fontSize: 10, textColor: Colors.black45),
),
],
gravity: ContentGravity.LEFT,
margin: SystemWindowMargin(top: 8),
),
EachRow(
columns: [
EachColumn(
text: SystemWindowText(text: "Some random notes.", fontSize: 13, textColor: Colors.black54, fontWeight: FontWeight.BOLD),
),
],
gravity: ContentGravity.LEFT,
),
],
padding: SystemWindowPadding(left: 16, right: 16, bottom: 12, top: 12),
);
SystemWindowFooter footer = SystemWindowFooter(
buttons: [
SystemWindowButton(
text: SystemWindowText(text: "Simple button", fontSize: 12, textColor: Color.fromRGBO(250, 139, 97, 1)),
tag: "simple_button",
padding: SystemWindowPadding(left: 10, right: 10, bottom: 10, top: 10),
width: 0,
height: SystemWindowButton.WRAP_CONTENT,
decoration: SystemWindowDecoration(startColor: Colors.white, endColor: Colors.white, borderWidth: 0, borderRadius: 0.0),
),
SystemWindowButton(
text: SystemWindowText(text: "Focus button", fontSize: 12, textColor: Colors.white),
tag: "focus_button",
width: 0,
padding: SystemWindowPadding(left: 10, right: 10, bottom: 10, top: 10),
height: SystemWindowButton.WRAP_CONTENT,
decoration: SystemWindowDecoration(
startColor: Color.fromRGBO(250, 139, 97, 1), endColor: Color.fromRGBO(247, 28, 88, 1), borderWidth: 0, borderRadius: 30.0),
)
],
padding: SystemWindowPadding(left: 16, right: 16, bottom: 12),
decoration: SystemWindowDecoration(startColor: Colors.white),
buttonsPosition: ButtonPosition.CENTER);
SystemAlertWindow.showSystemWindow(
height: 230,
header: header,
body: body,
footer: footer,
margin: SystemWindowMargin(left: 8, right: 8, top: 200, bottom: 0),
gravity: SystemWindowGravity.TOP,
notificationTitle: "Incoming Call",
notificationBody: "+1 646 980 4741",
prefMode: prefMode);
setState(() {
_isShowingWindow = true;
});
} else if (!_isUpdatedWindow) {
SystemWindowHeader header = SystemWindowHeader(
title: SystemWindowText(text: "Outgoing Call", fontSize: 10, textColor: Colors.black45),
padding: SystemWindowPadding.setSymmetricPadding(12, 12),
subTitle: SystemWindowText(text: "8989898989", fontSize: 14, fontWeight: FontWeight.BOLD, textColor: Colors.black87),
decoration: SystemWindowDecoration(startColor: Colors.grey[100]),
button: SystemWindowButton(text: SystemWindowText(text: "Personal", fontSize: 10, textColor: Colors.black45), tag: "personal_btn"),
buttonPosition: ButtonPosition.TRAILING);
SystemWindowBody body = SystemWindowBody(
rows: [
EachRow(
columns: [
EachColumn(
text: SystemWindowText(text: "Updated body", fontSize: 12, textColor: Colors.black45),
),
],
gravity: ContentGravity.CENTER,
),
EachRow(columns: [
EachColumn(
text: SystemWindowText(text: "Updated long data of the body", fontSize: 12, textColor: Colors.black87, fontWeight: FontWeight.BOLD),
padding: SystemWindowPadding.setSymmetricPadding(6, 8),
decoration: SystemWindowDecoration(startColor: Colors.black12, borderRadius: 25.0),
margin: SystemWindowMargin(top: 4)),
], gravity: ContentGravity.CENTER),
EachRow(
columns: [
EachColumn(
text: SystemWindowText(text: "Notes", fontSize: 10, textColor: Colors.black45),
),
],
gravity: ContentGravity.LEFT,
margin: SystemWindowMargin(top: 8),
),
EachRow(
columns: [
EachColumn(
text: SystemWindowText(text: "Updated random notes.", fontSize: 13, textColor: Colors.black54, fontWeight: FontWeight.BOLD),
),
],
gravity: ContentGravity.LEFT,
),
],
padding: SystemWindowPadding(left: 16, right: 16, bottom: 12, top: 12),
);
SystemWindowFooter footer = SystemWindowFooter(
buttons: [
SystemWindowButton(
text: SystemWindowText(text: "Updated Simple button", fontSize: 12, textColor: Color.fromRGBO(250, 139, 97, 1)),
tag: "updated_simple_button",
padding: SystemWindowPadding(left: 10, right: 10, bottom: 10, top: 10),
width: 0,
height: SystemWindowButton.WRAP_CONTENT,
decoration: SystemWindowDecoration(startColor: Colors.white, endColor: Colors.white, borderWidth: 0, borderRadius: 0.0),
),
SystemWindowButton(
text: SystemWindowText(text: "Focus button", fontSize: 12, textColor: Colors.white),
tag: "focus_button",
width: 0,
padding: SystemWindowPadding(left: 10, right: 10, bottom: 10, top: 10),
height: SystemWindowButton.WRAP_CONTENT,
decoration: SystemWindowDecoration(
startColor: Color.fromRGBO(250, 139, 97, 1), endColor: Color.fromRGBO(247, 28, 88, 1), borderWidth: 0, borderRadius: 30.0),
)
],
padding: SystemWindowPadding(left: 16, right: 16, bottom: 12),
decoration: SystemWindowDecoration(startColor: Colors.white),
buttonsPosition: ButtonPosition.CENTER);
SystemAlertWindow.updateSystemWindow(
height: 230,
header: header,
body: body,
footer: footer,
margin: SystemWindowMargin(left: 8, right: 8, top: 200, bottom: 0),
gravity: SystemWindowGravity.TOP,
notificationTitle: "Outgoing Call",
notificationBody: "+1 646 980 4741",
prefMode: prefMode);
setState(() {
_isUpdatedWindow = true;
});
} else {
setState(() {
_isShowingWindow = false;
_isUpdatedWindow = false;
});
SystemAlertWindow.closeSystemWindow(prefMode: prefMode);
}
}
#override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('System Alert Window Example App'),
),
body: Center(
child: Column(
children: <Widget>[
Text('Running on: $_platformVersion\n'),
Padding(
padding: const EdgeInsets.symmetric(vertical: 8.0),
child: MaterialButton(
onPressed: _showOverlayWindow,
textColor: Colors.white,
child: !_isShowingWindow
? Text("Show system alert window")
: !_isUpdatedWindow
? Text("Update system alert window")
: Text("Close system alert window"),
color: Colors.deepOrange,
padding: const EdgeInsets.symmetric(vertical: 8.0),
),
)
],
),
),
),
);
}
}

Flutter - Align bottom doesn't reach bottom

This is the home page of my app, here I use column to display the page's content: container with Anime of the day and stories scroll container.
By default, everything is OK, but, when I scroll stories (ListView), a crack appears (see attachments), so the gradient doesn't reach the end. What is the problem?
Screenshots:
Before scroll
After scroll
Code snippet:
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Container(
height: 510,
width: double.infinity,
child: Stack(fit: StackFit.expand, children: [
Positioned.fill(
child: Container(
decoration: BoxDecoration(
image: DecorationImage(
image: NetworkImage(
'https://img5.goodfon.ru/wallpaper/nbig/3/59/shingeki-no-kyojin-ataka-titanov-parni-eren-levi.jpg'),
fit: BoxFit.cover)),
)),
Align(
alignment: Alignment.bottomCenter,
child: Container(
width: double.infinity,
height: 510,
decoration: BoxDecoration(
gradient: LinearGradient(
colors: [
Color(0x15161a),
Color(0x2d15161a),
Color(0xff18191e)
],
begin: Alignment.topCenter,
end: Alignment.bottomCenter)),
child: Padding(
padding: const EdgeInsets.all(15.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.end,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Text('Вторжение титанов',
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w700,
fontSize: 40,
)),
SizedBox(height: 5),
Text(
'Attack of titans',
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w600,
fontSize: 20,
),
),
SizedBox(height: 80),
Row(
children: [
Text(
'приключения',
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w600,
fontSize: 14,
),
),
SizedBox(
width: 16,
),
Text(
'2021',
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w600,
fontSize: 14,
),
),
SizedBox(
width: 16,
),
Text(
'18+',
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w600,
fontSize: 14,
),
),
],
),
SizedBox(
height: 10,
)
]))))
])),
SizedBox(
height: 15,
),
Container(
height: 100,
child: ListView(
physics: BouncingScrollPhysics(),
scrollDirection: Axis.horizontal,
children: [
Row(
children: [
SizedBox(
width: 11,
),
Column(
children: [
CircleAvatar(
radius: 37,
backgroundColor: Color(0xffdddddd),
child: CircleAvatar(
radius: 36,
backgroundColor: Color(0xff1e1f23),
child: CircleAvatar(
radius: 34,
backgroundImage: NetworkImage(
'https://picsum.photos/200/300'),
),
)),
SizedBox(
height: 9,
),
Text(
'Новое',
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w600,
fontSize: 11,
),
),
],
),
SizedBox(
width: 9,
),
Column(
children: [
CircleAvatar(
radius: 37,
backgroundColor: Color(0xffdddddd),
child: CircleAvatar(
radius: 36,
backgroundColor: Color(0xff1e1f23),
child: CircleAvatar(
radius: 34,
backgroundImage: NetworkImage(
'https://picsum.photos/200/300'),
),
)),
SizedBox(
height: 9,
),
Text(
'Новое',
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w600,
fontSize: 11,
),
),
],
),
SizedBox(
width: 9,
),
Column(
children: [
CircleAvatar(
radius: 37,
backgroundColor: Color(0xffdddddd),
child: CircleAvatar(
radius: 36,
backgroundColor: Color(0xff1e1f23),
child: CircleAvatar(
radius: 34,
backgroundImage: NetworkImage(
'https://picsum.photos/200/300'),
),
)),
SizedBox(
height: 9,
),
Text(
'Новое',
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w600,
fontSize: 11,
),
),
],
),
SizedBox(
width: 9,
),
Column(
children: [
CircleAvatar(
radius: 37,
backgroundColor: Color(0xffdddddd),
child: CircleAvatar(
radius: 36,
backgroundColor: Color(0xff1e1f23),
child: CircleAvatar(
radius: 34,
backgroundImage: NetworkImage(
'https://picsum.photos/200/300'),
),
)),
SizedBox(
height: 9,
),
Text(
'Новое',
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w600,
fontSize: 11,
),
),
],
),
SizedBox(
width: 9,
),
Column(
children: [
CircleAvatar(
radius: 37,
backgroundColor: Color(0xffdddddd),
child: CircleAvatar(
radius: 36,
backgroundColor: Color(0xff1e1f23),
child: CircleAvatar(
radius: 34,
backgroundImage: NetworkImage(
'https://picsum.photos/200/300'),
),
)),
SizedBox(
height: 9,
),
Text(
'Новое',
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w600,
fontSize: 11,
),
),
],
),
SizedBox(
width: 9,
),
Column(
children: [
CircleAvatar(
radius: 37,
backgroundColor: Color(0xffdddddd),
child: CircleAvatar(
radius: 36,
backgroundColor: Color(0xff1e1f23),
child: CircleAvatar(
radius: 34,
backgroundImage: NetworkImage(
'https://picsum.photos/200/300'),
),
)),
SizedBox(
height: 9,
),
Text(
'Новое',
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w600,
fontSize: 11,
),
),
],
),
],
)
]),
),
SizedBox(
height: 37,
),
Padding(
padding: EdgeInsets.fromLTRB(11, 0, 0, 11),
child: Column(
children: [
Text(
'Новинки',
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w700,
fontSize: 30,
),
),
],
),
),
],
)

Adding margin: EdgeInsets.only(bottom:1) to Container() inside Positioned.fill() solved the problem.
Solution by #ChiragBargoojar

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