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I keep getting the error as mentioned when I try to load LessonPage. What is happening is that I have a RootPage which checks if a user is signed in, if he is the RootPage will show the LessonPage but if he is not, it will show the LoginScreen which when the user logs in, will invoke a callback function to RootPage _onLoggedIn()so as to switch pages to the LessonPage.
Update: I found out that the error is also logged when I load the app (i.e. the app opens to a LoginScreen), however I see my login screen instead of a blank screen. I've appended my LoginScreen code below for reference
Root Page:
class RootPage extends StatefulWidget {
RootPage({this.auth});
final BaseAuth auth;
#override
State<StatefulWidget> createState() => new _RootPageState();
}
enum AuthStatus {
NOT_DETERMINED,
NOT_LOGGED_IN,
LOGGED_IN,
}
class _RootPageState extends State<RootPage> {
AuthStatus authStatus = AuthStatus.NOT_DETERMINED;
String _userId = "";
#override
void initState() {
super.initState();
widget.auth.getCurrentUser().then((user) {
setState(() {
if (user != null) {
_userId = user?.uid;
}
authStatus =
user?.uid == null ? AuthStatus.NOT_LOGGED_IN : AuthStatus.LOGGED_IN;
});
});
}
void _onLoggedIn() {
widget.auth.getCurrentUser().then((user){
setState(() {
_userId = user.uid.toString();
});
});
setState(() {
authStatus = AuthStatus.LOGGED_IN;
});
}
void _onSignedOut() {
setState(() {
authStatus = AuthStatus.NOT_LOGGED_IN;
_userId = "";
});
}
Widget _buildWaitingScreen() {
return Scaffold(
body: Container(
alignment: Alignment.center,
child:
ColorLoader5(
dotOneColor: Colors.blueGrey[600],
dotTwoColor: Colors.blueGrey[700],
dotThreeColor: Colors.blueGrey[800],
dotType: DotType.circle,
dotIcon: Icon(Icons.adjust),
duration: Duration(seconds: 1),
),
),
);
}
#override
Widget build(BuildContext context) {
switch (authStatus) {
case AuthStatus.NOT_DETERMINED:
return _buildWaitingScreen();
break;
case AuthStatus.NOT_LOGGED_IN:
return new LoginScreen(
auth: widget.auth,
onSignedIn: _onLoggedIn,
);
break;
case AuthStatus.LOGGED_IN:
if (_userId.length > 0 && _userId != null) {
return new Container(child: SingleChildScrollView(child: LessonPage(
title: LESSON_PAGE_TITLE,
userId: _userId,
auth: widget.auth,
onSignedOut: _onSignedOut,
)));
} else return _buildWaitingScreen();
break;
default:
return _buildWaitingScreen();
}
}
}
Lesson Page:
class LessonPage extends StatefulWidget {
LessonPage({Key key, this.auth, this.userId, this.onSignedOut, this.title}) : super(key: key);
final String title;
final BaseAuth auth;
final VoidCallback onSignedOut;
final String userId;
#override
_LessonPageState createState() => _LessonPageState();
}
class _LessonPageState extends State<LessonPage> {
List lessons;
#override
void initState() {
lessons = StaticMethods.getLessons();
super.initState();
}
#override
Widget build(BuildContext context) {
ListTile makeListTile(Lesson lesson) => ListTile(
contentPadding:
EdgeInsets.symmetric(horizontal: 20.0, vertical: 10.0),
leading: Container(
padding: EdgeInsets.only(right: 12.0),
decoration: new BoxDecoration(
border: new Border(
right: new BorderSide(width: 1.0, color: Colors.white24))),
child: IconButton(
icon: Icon(Icons.file_download, color: Colors.white),
onPressed: (){},
),
),
title: Text(
lesson.title,
style: TextStyle(color: Colors.white, fontWeight: FontWeight.bold),
),
subtitle: Row(
children: <Widget>[
Expanded(
flex: 1,
child: Container(
child: LinearProgressIndicator(
backgroundColor: Color.fromRGBO(209, 224, 224, 0.2),
value: lesson.indicatorValue,
valueColor: AlwaysStoppedAnimation(Colors.green)),
)),
Expanded(
flex: 4,
child: Padding(
padding: EdgeInsets.only(left: 10.0),
child: Text(lesson.level,
style: TextStyle(color: Colors.white))),
)
],
),
trailing:
Icon(Icons.keyboard_arrow_right, color: Colors.white, size: 30.0),
onTap: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => DetailPage(lesson: lesson)));
},
);
Card makeCard(Lesson lesson) => Card(
elevation: 8.0,
margin: new EdgeInsets.symmetric(horizontal: 10.0, vertical: 6.0),
child: Container(
decoration: BoxDecoration(color: Color.fromRGBO(64, 75, 96, .9)),
child: makeListTile(lesson),
),
);
final makeBody = Container(
child: ListView.builder(
scrollDirection: Axis.vertical,
shrinkWrap: true,
itemCount: lessons.length,
itemBuilder: (BuildContext context, int index) {
return makeCard(lessons[index]);
},
),
);
final makeBottom = Container(
height: 55.0,
child: BottomAppBar(
color: Color.fromRGBO(58, 66, 86, 1.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
IconButton(
icon: Icon(Icons.school, color: Colors.white),
onPressed: () => StaticMethods.goToWidget(context, new LessonPage(title: LESSON_PAGE_TITLE)),
),
IconButton(
icon: Icon(Icons.flight_takeoff, color: Colors.white),
onPressed: () {},
),
IconButton(
icon: Icon(Icons.account_box, color: Colors.white),
onPressed: () {},
)
],
),
),
);
final topAppBar = AppBar(
elevation: 0.1,
backgroundColor: Color.fromRGBO(58, 66, 86, 1.0),
title: Text(widget.title),
automaticallyImplyLeading: false,
);
return Scaffold(
backgroundColor: Color.fromRGBO(58, 66, 86, 1.0),
appBar: topAppBar,
body: makeBody,
bottomNavigationBar: makeBottom,
);
}
}
LoginScreen Containers:
Widget OptionPage() {
return new Container(
height: MediaQuery.of(context).size.height,
decoration: BoxDecoration(
color: Color.fromRGBO(58, 66, 86, 1.0),
image: DecorationImage(
colorFilter: new ColorFilter.mode(
Colors.black.withOpacity(0.1), BlendMode.dstATop),
image: AssetImage('assets/images/drones.jpg'),
fit: BoxFit.cover,
),
),
child: new Column(
children: <Widget>[
Container(
padding: EdgeInsets.only(top: 250.0),
child: Center(
child: Icon(
Icons.school,
color: Colors.white,
size: 40.0,
),
),
),
Container(
padding: EdgeInsets.only(top: 20.0),
child: new Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
LOGIN_SCREEN_TITLE,
style: TextStyle(
color: Colors.white,
fontSize: 20.0,
),
),
],
),
),
new Container(
width: MediaQuery.of(context).size.width,
margin: const EdgeInsets.only(left: 30.0, right: 30.0, top: 150.0),
alignment: Alignment.center,
child: new Row(
children: <Widget>[
new Expanded(
child: new OutlineButton(
shape: new RoundedRectangleBorder(
borderRadius: new BorderRadius.circular(30.0)),
color: Color.fromRGBO(58, 66, 86, 1.0),
highlightedBorderColor: Colors.white,
onPressed: () => gotoSignup(),
child: new Container(
padding: const EdgeInsets.symmetric(
vertical: 20.0,
horizontal: 20.0,
),
child: new Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
new Expanded(
child: Text(
LOGIN_SCREEN_SIGN_UP,
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold),
),
),
],
),
),
),
),
],
),
),
new Container(
width: MediaQuery.of(context).size.width,
margin: const EdgeInsets.only(left: 30.0, right: 30.0, top: 30.0),
alignment: Alignment.center,
child: new Row(
children: <Widget>[
new Expanded(
child: new FlatButton(
shape: new RoundedRectangleBorder(
borderRadius: new BorderRadius.circular(30.0)),
color: Colors.white,
onPressed: () => gotoLogin(),
child: new Container(
padding: const EdgeInsets.symmetric(
vertical: 20.0,
horizontal: 20.0,
),
child: new Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
new Expanded(
child: Text(
LOGIN_SCREEN_LOGIN,
textAlign: TextAlign.center,
style: TextStyle(
color: Color.fromRGBO(58, 66, 86, 1.0),
fontWeight: FontWeight.bold),
),
),
],
),
),
),
),
],
),
),
],
),
);
}
Widget LoginPage() {
return new Container(
height: MediaQuery.of(context).size.height,
decoration: BoxDecoration(
color: Colors.white,
image: DecorationImage(
colorFilter: new ColorFilter.mode(
Colors.black.withOpacity(0.05), BlendMode.dstATop),
image: AssetImage('assets/images/drones.jpg'),
fit: BoxFit.cover,
),
),
child: new Column(
children: <Widget>[
Container(
padding: EdgeInsets.all(120.0),
child: Center(
child: Icon(
Icons.school,
color: Color.fromRGBO(58, 66, 86, 1.0),
size: 50.0,
),
),
),
new Row(
children: <Widget>[
new Expanded(
child: new Padding(
padding: const EdgeInsets.only(left: 40.0),
child: new Text(
LOGIN_SCREEN_EMAIL,
style: TextStyle(
fontWeight: FontWeight.bold,
color: Color.fromRGBO(58, 66, 86, 1.0),
fontSize: 15.0,
),
),
),
),
],
),
new Container(
width: MediaQuery.of(context).size.width,
margin: const EdgeInsets.only(left: 40.0, right: 40.0, top: 10.0),
alignment: Alignment.center,
padding: const EdgeInsets.only(left: 0.0, right: 10.0),
child: new Row(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
new Expanded(
child: TextFormField( // LOGIN SCREEN EMAIL
maxLines: 1,
keyboardType: TextInputType.emailAddress,
autofocus: false,
textAlign: TextAlign.left,
decoration: InputDecoration(
icon: Icon(Icons.alternate_email),
hintText: LOGIN_SCREEN_EMAIL_HINT,
hintStyle: TextStyle(color: Colors.grey),
),
validator: (value) => value.isEmpty ? LOGIN_SCREEN_EMAIL_WARNING : null,
onSaved: (value) => _email = value,
),
),
],
),
),
Divider(
height: 24.0,
color: Color(0x00000000),
),
new Row(
children: <Widget>[
new Expanded(
child: new Padding(
padding: const EdgeInsets.only(left: 40.0),
child: new Text(
LOGIN_SCREEN_PASSWORD,
style: TextStyle(
fontWeight: FontWeight.bold,
color: Color.fromRGBO(58, 66, 86, 1.0),
fontSize: 15.0,
),
),
),
),
],
),
new Container(
width: MediaQuery.of(context).size.width,
margin: const EdgeInsets.only(left: 40.0, right: 40.0, top: 10.0),
alignment: Alignment.center,
padding: const EdgeInsets.only(left: 0.0, right: 10.0),
child: new Row(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
new Expanded(
child: TextFormField( // LOGIN SCREEN PASSWORD
obscureText: true,
keyboardType: TextInputType.emailAddress,
maxLines: 1,
autofocus: false,
textAlign: TextAlign.left,
decoration: InputDecoration(
icon: Icon(Icons.lock_outline),
hintText: LOGIN_SCREEN_PASSWORD_HINT,
hintStyle: TextStyle(color: Colors.grey),
),
validator: (value) => value.isEmpty ? LOGIN_SCREEN_PASSWORD_WARNING : null,
onSaved: (value) => _password = value,
),
),
],
),
),
Divider(
height: 24.0,
color: Color(0x00000000),
),
new Row(
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
Padding(
padding: const EdgeInsets.only(right: 20.0),
child: new FlatButton(
child: new Text(
LOGIN_SCREEN_FORGOT_PASSWORD,
style: TextStyle(
fontWeight: FontWeight.bold,
color: Color.fromRGBO(58, 66, 86, 1.0),
fontSize: 15.0,
),
textAlign: TextAlign.end,
),
onPressed: () => StaticMethods.locked(context),
),
),
],
),
new Container(
width: MediaQuery.of(context).size.width,
margin: const EdgeInsets.only(left: 30.0, right: 30.0, top: 20.0),
alignment: Alignment.center,
child: new Row(
children: <Widget>[
new Expanded(
child: new FlatButton( // LOGIN SCREEN LOGIN BUTTON
shape: new RoundedRectangleBorder(
borderRadius: new BorderRadius.circular(30.0),
),
color: Color.fromRGBO(58, 66, 86, 1.0),
onPressed: () => _validateAndSubmit(),
child: new Container(
padding: const EdgeInsets.symmetric(
vertical: 20.0,
horizontal: 20.0,
),
child: new Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
new Expanded(
child: Text(
LOGIN_SCREEN_LOGIN,
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold),
),
),
],
),
),
),
),
],
),
),
Divider(
height: 25.0,
color: Color(0x00000000),
),
_showErrorMessage(),
Divider(
height: 25.0,
color: Color(0x00000000),
),
_showLoading(),
],
),
);
}
Widget SignupPage() {
return new Container(
height: MediaQuery.of(context).size.height,
decoration: BoxDecoration(
color: Colors.white,
image: DecorationImage(
colorFilter: new ColorFilter.mode(
Colors.black.withOpacity(0.05), BlendMode.dstATop),
image: AssetImage('assets/images/drones.jpg'),
fit: BoxFit.cover,
),
),
child: new Column(
children: <Widget>[
Container(
padding: EdgeInsets.all(100.0),
child: Center(
child: Icon(
Icons.school,
color: Color.fromRGBO(58, 66, 86, 1.0),
size: 50.0,
),
),
),
new Row(
children: <Widget>[
new Expanded(
child: new Padding(
padding: const EdgeInsets.only(left: 40.0),
child: new Text(
LOGIN_SCREEN_EMAIL,
style: TextStyle(
fontWeight: FontWeight.bold,
color: Color.fromRGBO(58, 66, 86, 1.0),
fontSize: 15.0,
),
),
),
),
],
),
new Container(
width: MediaQuery.of(context).size.width,
margin: const EdgeInsets.only(left: 40.0, right: 40.0, top: 10.0),
alignment: Alignment.center,
padding: const EdgeInsets.only(left: 0.0, right: 10.0),
child: new Row(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
new Expanded(
child: TextField( //SIGNUP SCREEN EMAIL
obscureText: true,
textAlign: TextAlign.left,
decoration: InputDecoration(
hintText: LOGIN_SCREEN_EMAIL_HINT,
hintStyle: TextStyle(color: Colors.grey),
),
),
),
],
),
),
Divider(
height: 24.0,
color: Color(0x00000000),
),
new Row(
children: <Widget>[
new Expanded(
child: new Padding(
padding: const EdgeInsets.only(left: 40.0),
child: new Text(
LOGIN_SCREEN_PASSWORD,
style: TextStyle(
fontWeight: FontWeight.bold,
color: Color.fromRGBO(58, 66, 86, 1.0),
fontSize: 15.0,
),
),
),
),
],
),
new Container(
width: MediaQuery.of(context).size.width,
margin: const EdgeInsets.only(left: 40.0, right: 40.0, top: 10.0),
alignment: Alignment.center,
padding: const EdgeInsets.only(left: 0.0, right: 10.0),
child: new Row(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
new Expanded(
child: TextField( // SIGNUP SCREEN PASSWORD
obscureText: true,
textAlign: TextAlign.left,
decoration: InputDecoration(
hintText: LOGIN_SCREEN_PASSWORD_HINT,
hintStyle: TextStyle(color: Colors.grey),
),
),
),
],
),
),
Divider(
height: 24.0,
color: Color(0x00000000),
),
new Row(
children: <Widget>[
new Expanded(
child: new Padding(
padding: const EdgeInsets.only(left: 40.0),
child: new Text( // SIGNUP SCREEN CONFIRM PASSWORD
LOGIN_SCREEN_CONFIRM_PASSWORD,
style: TextStyle(
fontWeight: FontWeight.bold,
color: Color.fromRGBO(58, 66, 86, 1.0),
fontSize: 15.0,
),
),
),
),
],
),
new Container(
width: MediaQuery.of(context).size.width,
margin: const EdgeInsets.only(left: 40.0, right: 40.0, top: 10.0),
alignment: Alignment.center,
padding: const EdgeInsets.only(left: 0.0, right: 10.0),
child: new Row(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
new Expanded(
child: TextField(
obscureText: true,
textAlign: TextAlign.left,
decoration: InputDecoration(
hintText: LOGIN_SCREEN_PASSWORD_HINT,
hintStyle: TextStyle(color: Colors.grey),
),
),
),
],
),
),
Divider(
height: 24.0,
color: Color(0x00000000),
),
new Row(
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
Padding(
padding: const EdgeInsets.only(right: 20.0),
child: new FlatButton(
child: new Text(
LOGIN_SCREEN_HAVE_ACCOUNT,
style: TextStyle(
fontWeight: FontWeight.bold,
color: Color.fromRGBO(58, 66, 86, 1.0),
fontSize: 15.0,
),
textAlign: TextAlign.end,
),
onPressed: () => StaticMethods.locked(context),
),
),
],
),
new Container(
width: MediaQuery.of(context).size.width,
margin: const EdgeInsets.only(left: 30.0, right: 30.0, top: 50.0),
alignment: Alignment.center,
child: new Row(
children: <Widget>[
new Expanded(
child: new FlatButton( // SIGNUP SCREEN SIGN UP BUTTON
shape: new RoundedRectangleBorder(
borderRadius: new BorderRadius.circular(30.0),
),
color: Color.fromRGBO(58, 66, 86, 1.0),
onPressed: () => StaticMethods.locked(context),
child: new Container(
padding: const EdgeInsets.symmetric(
vertical: 20.0,
horizontal: 20.0,
),
child: new Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
new Expanded(
child: Text(
LOGIN_SCREEN_SIGN_UP,
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold),
),
),
],
),
),
),
),
],
),
),
],
),
);
}
PageController _controller = new PageController(initialPage: 1, viewportFraction: 1.0);
#override
Widget build(BuildContext context) {
_isIos = Theme.of(context).platform == TargetPlatform.iOS;
return Container(
height: MediaQuery.of(context).size.height,
width: MediaQuery.of(context).size.width,
child: new Form (
key: _formKey,
child: PageView(
controller: _controller,
physics: new AlwaysScrollableScrollPhysics(),
children: <Widget>[LoginPage(), OptionPage(), SignupPage()],
scrollDirection: Axis.horizontal,
onPageChanged: (num){
switch (num) {
case 0:
setState(() {
_formKey.currentState.reset();
_errorMessage = "";
_formMode = FormMode.LOGIN;
});
break;
case 1:
setState(() {
_formKey.currentState.reset();
_errorMessage = "";
_formMode = FormMode.OPTIONS;
});
break;
case 2:
setState(() {
_formKey.currentState.reset();
_errorMessage = "";
_formMode = FormMode.SIGNUP;
});
break;
}
},
),
),
);
}
Error:
I/flutter (18510): The following assertion was thrown during performLayout():
I/flutter (18510): RenderCustomMultiChildLayoutBox object was given an infinite size during layout.
.....
In the error, it shows just a blank page instead of lesson page, and checking firebase I can see that a user logs in so I think it is some layout issue.
What I've tried:
RootPage (I still saw a blank screen):
return new LessonPage(
title: LESSON_PAGE_TITLE,
userId: _userId,
auth: widget.auth,
onSignedOut: _onSignedOut,
);
I tried to return a normal page instead of lesson page which just shows a loading animation which is already tested and works but still I see a blank page:
return _buildWaitingScreen();
LessonPage (still see blank page):
Widget makeBody(BuildContext context) => Container(
height: MediaQuery.of(context).size.height / 1.5,
child: ListView.builder(
scrollDirection: Axis.vertical,
shrinkWrap: true,
itemCount: lessons.length,
itemBuilder: (BuildContext context, int index) {
return makeCard(lessons[index]);
},
),
);
return Scaffold(
backgroundColor: Color.fromRGBO(58, 66, 86, 1.0),
appBar: topAppBar,
body: makeBody(context),
bottomNavigationBar: makeBottom,
);
You dont need Container and SingleChildScrollView in below snippet:
return LessonPage(
title: LESSON_PAGE_TITLE,
userId: _userId,
auth: widget.auth,
onSignedOut: _onSignedOut,
);
If that didn't fix,
RenderCustomMultiChildLayoutBox object was given an infinite size during layout. means that you have used ListView or ScrollView or any other widget that has infinite size. In order to prevent this issue, wrap your makeBody list view with fixed size. If it is working you can use MediaQuery.of(context).size.height(gives device screen width) and adjest the size you want.
Ex:
Widget makeBody(BuildContext context) => Container(
height: MediaQuery.of(context).size.height / 1.5,
child: ListView.builder(
scrollDirection: Axis.vertical,
shrinkWrap: true,
itemCount: lessons.length,
itemBuilder: (BuildContext context, int index) {
return makeCard(lessons[index]);
},
),
);
and call the method: body: makeBody(context),
Fix in RootPage:
return new Container(
height: MediaQuery.of(context).size.height,
child: LessonPage(
title: LESSON_PAGE_TITLE,
userId: _userId,
auth: widget.auth,
onSignedOut: _onSignedOut,
)
);
Here's a mockup of the dialog I'm trying to create in Flutter:
Here's what I have so far:
I'm unable to position my two button's with rounded bottom corners at the bottom of the dialog so that it looks like in the mockup.
I was able to make those buttons fit within the Dialog width, without the stack, but then it would be positioned at the top.
Here's the code for the dialog:
SimpleDialog carDialog = SimpleDialog(
contentPadding: EdgeInsets.all(0),
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(6)),
children: <Widget>[
Container(
height: 400,
child: Stack(
children: <Widget>[
Positioned(
bottom: 0,
child: IntrinsicWidth(
child: Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Expanded(
child: Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.only(
bottomLeft: Radius.circular(6)),
color: Colors.lightBlueAccent,
),
height: 45,
child: Center(
child: Text(
allTranslations.text('wait_enroute').toUpperCase(),
textAlign: TextAlign.center,
style: Fonts.appFont(context,
bold: true, color: Colors.white),
),
),
),
),
Expanded(
child: Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.only(
bottomRight: Radius.circular(6)),
color: AppColors.action_button,
),
height: 45,
child: Center(
child: Padding(
padding:
const EdgeInsets.symmetric(horizontal: 8.0),
child: Text(
allTranslations.text('new_order').toUpperCase(),
textAlign: TextAlign.center,
style: Fonts.appFont(context,
bold: true, color: Colors.white),
),
),
),
),
),
],
),
),
),
],
),
),
],
);
showDialog(context: context, builder: (context) => carDialog);
I have found a working solution. It does not require the Stack widget, everything can be nested within a Column like so:
SimpleDialog carDialog = SimpleDialog(
contentPadding: EdgeInsets.all(0),
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(6)),
children: <Widget>[
Column(
children: <Widget>[
SizedBox(
height: 400,
),
Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Expanded(
child: InkWell(
child: Container(
decoration: BoxDecoration(
borderRadius:
BorderRadius.only(bottomLeft: Radius.circular(6)),
color: Colors.lightBlueAccent,
),
height: 45,
child: Center(
child: Text(
allTranslations.text('wait_enroute').toUpperCase(),
textAlign: TextAlign.center,
style: Fonts.appFont(context,
bold: true, color: Colors.white),
),
),
),
),
),
Expanded(
child: Container(
decoration: BoxDecoration(
borderRadius:
BorderRadius.only(bottomRight: Radius.circular(6)),
color: AppColors.action_button,
),
height: 45,
child: Center(
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 8.0),
child: Text(
allTranslations.text('new_order').toUpperCase(),
textAlign: TextAlign.center,
style: Fonts.appFont(context,
bold: true, color: Colors.white),
),
),
),
),
),
],
),
],
),
],
);
showDialog(context: context, builder: (context) => carDialog);
The result:
You can try this replacing with Row
LayoutBuilder(
builder:(BuildContext context, BoxConstraints constraints){
return Row(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
SizedBox(
width : constraints.maxWidth/2
child:Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.only(
bottomLeft: Radius.circular(6)),
color: Colors.lightBlueAccent,
),
height: 45,
child: Center(
child: Text(
allTranslations.text('wait_enroute').toUpperCase(),
textAlign: TextAlign.center,
style: Fonts.appFont(context,
bold: true, color: Colors.white),
),
),
),
),
SizedBox(
width : constraints.maxWidth/2
child:Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.only(
bottomRight: Radius.circular(6)),
color: AppColors.action_button,
),
height: 45,
child: Center(
child: Padding(
padding:
const EdgeInsets.symmetric(horizontal: 8.0),
child: Text(
allTranslations.text('new_order').toUpperCase(),
textAlign: TextAlign.center,
style: Fonts.appFont(context,
bold: true, color: Colors.white),
),
),
),
),
),
],
);
}
),
When I create a Container with box shadow inside a ListView (scrolls Horizontally), the shadow looks fine, but, when I add multiple Containers inside the ListView, their shadows(just shadows, not Container) gets cropped at top and bottom.
Please also note that this whole ListView is wrapped under a parent Container.
I tried to increase the height of Parent Container(in which the whole ListView is wrapped), but it increases the height of child Container with its shadow still cropped.
I also tried to give padding to Parent Container but, it still shadow still gets cropped.
Maybe I need to wrap the ListView inside any other Widget which can get the job done without the problem.
Container(
// padding: EdgeInsets.only(left: 30.0, right: 0.0),
height: 140.0,
child: ListView(
scrollDirection: Axis.horizontal,
children: <Widget>[
SizedBox(
width: 30.0,
),
Container(
//This is actual custom Card
width: 340.0,
height: 140.0,
decoration: BoxDecoration(
boxShadow: [
BoxShadow(
color: Colors.black12,
offset: Offset.zero,
blurRadius: 10.0,
spreadRadius: 0.0,
)
],
color: Colors.white,
borderRadius: BorderRadius.circular(10.0),
),
child: Row(
children: <Widget>[
Container(
padding: EdgeInsets.fromLTRB(
30.0, 20.0, 25.0, 20.0),
child: Image.asset(
'assets/images/leather_boot.png'),
),
Container(
padding:
EdgeInsets.only(top: 30.0, bottom: 30.0),
child: Column(
crossAxisAlignment:
CrossAxisAlignment.start,
children: <Widget>[
Text(
'BadAss Genuine',
style: TextStyle(
color: Colors.black,
fontWeight: FontWeight.w500,
fontSize: 18.0,
),
),
SizedBox(
height: 3.0,
),
Text(
'Leather Boots',
style: TextStyle(
color: Colors.black,
fontWeight: FontWeight.w500,
fontSize: 18.0,
),
),
SizedBox(
height: 12.0,
),
Container(
height: 1.5,
width: 150.0,
color: Color(0xff643523),
),
],
),
),
],
),
),
SizedBox(
width: 30.0,
),
Container(
//This is actual custom Card
width: 340.0,
height: 140.0,
decoration: BoxDecoration(
boxShadow: [
BoxShadow(
color: Colors.black12,
offset: Offset.zero,
blurRadius: 10.0,
spreadRadius: 0.0,
)
],
color: Colors.white,
borderRadius: BorderRadius.circular(10.0),
),
child: Row(
children: <Widget>[
Container(
padding: EdgeInsets.fromLTRB(
30.0, 20.0, 25.0, 20.0),
child: Image.asset(
'assets/images/leather_boot.png'),
),
Container(
padding:
EdgeInsets.only(top: 30.0, bottom: 30.0),
child: Column(
crossAxisAlignment:
CrossAxisAlignment.start,
children: <Widget>[
Text(
'BadAss Genuine',
style: TextStyle(
color: Colors.black,
fontWeight: FontWeight.w500,
fontSize: 18.0,
),
),
SizedBox(
height: 3.0,
),
Text(
'Leather Boots',
style: TextStyle(
color: Colors.black,
fontWeight: FontWeight.w500,
fontSize: 18.0,
),
),
SizedBox(
height: 12.0,
),
Container(
height: 1.5,
width: 150.0,
color: Color(0xff643523),
),
],
),
),
],
),
),
SizedBox(
width: 30.0,
),
],
),
),
I expect the ListView to have Containers(as custom Cards) to have proper BoxShadow, but in the actual output, Containers' BoxShadow gets cropped from both Top & Bottom.
As #Zahra wrote,
adding clipBehavior: Clip.none, to the ListView, solved the problem.
The crop happens only when your widgets exceed the screen size
Okay I found the solution myself.
Steps to fix the problem
Create several Container(as a card) with some width and with a BoxShadow of Radius 10.0. Lets call it Child Container.
Create a ListView with Horizontal scroll axis. Put Child Containers made above in this ListView.
Now wrap the ListView inside a new Container(Lets call it Parent Container) to give ListView a height. If you want your Child Containers to be of height 140.0, then make your Parent Container's height 160.0, which includes radius of BoxShadow of 10.0 on top & bottom each(10.0+ 140.0 + 10.0).
Now give padding to your ListView of 10.0 on both top & bottom.
Problem Solved (Silly Me).
Sample Code here
Container(
height: 160.0,
child: ListView(
padding: EdgeInsets.only(top: 10.0, bottom: 10.0),
shrinkWrap: true,
scrollDirection: Axis.horizontal,
children: <Widget>[
SizedBox(
width: 30.0,
),
Container(
width: 340.0,
// height: 140.0,
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(10.0),
boxShadow: [
BoxShadow(
blurRadius: 10.0,
color: Colors.black12,
)
],
),
child: Row(
children: <Widget>[
Container(
padding: EdgeInsets.fromLTRB(
30.0, 20.0, 25.0, 20.0),
child: Image.asset(
'assets/images/leather_boot.png'),
),
Container(
padding:
EdgeInsets.only(top: 20.0, bottom: 20.0),
child: Column(
crossAxisAlignment:
CrossAxisAlignment.start,
children: <Widget>[
Text(
'BadAss Genuine',
style: TextStyle(
color: Colors.black,
fontWeight: FontWeight.w400,
fontSize: 18.0,
),
),
SizedBox(
height: 3.0,
),
Text(
'Leather Boots',
style: TextStyle(
color: Colors.black,
fontWeight: FontWeight.w400,
fontSize: 18.0,
),
),
SizedBox(
height: 12.0,
),
Container(
height: 1.0,
width: 150.0,
color: Color(0xff643523),
),
SizedBox(
height: 12.0,
),
Row(
children: <Widget>[
SizedBox(
width: 110.0,
),
Container(
height: 30.0,
width: 30.0,
child: Image.asset(
'assets/images/boot.png'),
),
],
),
],
),
),
],
),
),
SizedBox(
width: 30.0,
),
Container(
//This is actual custom Card
width: 340.0,
// height: 140.0,
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(10.0),
boxShadow: [
BoxShadow(
blurRadius: 10.0,
color: Colors.black12,
)
],
),
child: Row(
children: <Widget>[
Container(
padding: EdgeInsets.fromLTRB(
30.0, 20.0, 25.0, 20.0),
child:
Image.asset('assets/images/gloves.png'),
),
Container(
padding:
EdgeInsets.only(top: 20.0, bottom: 20.0),
child: Column(
crossAxisAlignment:
CrossAxisAlignment.start,
children: <Widget>[
Text(
'Highly Durable',
style: TextStyle(
color: Colors.black,
fontWeight: FontWeight.w400,
fontSize: 18.0,
),
),
SizedBox(
height: 3.0,
),
Text(
'Riding Gloves',
style: TextStyle(
color: Colors.black,
fontWeight: FontWeight.w400,
fontSize: 18.0,
),
),
SizedBox(
height: 12.0,
),
Container(
height: 1.0,
width: 150.0,
color: Color(0xff643523),
),
SizedBox(
height: 12.0,
),
Row(
children: <Widget>[
SizedBox(
width: 110.0,
),
Container(
height: 30.0,
width: 30.0,
child: Image.asset(
'assets/images/glove.png'),
),
],
),
],
),
),
],
),
),
SizedBox(
width: 30.0,
),
Container(
//This is actual custom Card
width: 340.0,
// height: 140.0,
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(10.0),
boxShadow: [
BoxShadow(
blurRadius: 10.0,
color: Colors.black12,
)
],
),
child: Row(
children: <Widget>[
Container(
padding: EdgeInsets.fromLTRB(
30.0, 20.0, 25.0, 20.0),
child:
Image.asset('assets/images/helmet.png'),
),
Container(
padding:
EdgeInsets.only(top: 20.0, bottom: 20.0),
child: Column(
crossAxisAlignment:
CrossAxisAlignment.start,
children: <Widget>[
Text(
'German Hat',
style: TextStyle(
color: Colors.black,
fontWeight: FontWeight.w400,
fontSize: 18.0,
),
),
SizedBox(
height: 3.0,
),
Text(
'Riding Helmet',
style: TextStyle(
color: Colors.black,
fontWeight: FontWeight.w400,
fontSize: 18.0,
),
),
SizedBox(
height: 12.0,
),
Container(
height: 1.0,
width: 150.0,
color: Color(0xff643523),
),
SizedBox(
height: 12.0,
),
Row(
children: <Widget>[
SizedBox(
width: 110.0,
),
Container(
height: 30.0,
width: 30.0,
child: Image.asset(
'assets/images/helmeticon.png'),
),
],
),
],
),
),
],
),
),
SizedBox(
width: 30.0,
),
],
),
),
Good morning. I made this screen and it works like a charm on high resolutions. Problem is, I want to support lower resolutions like Nexus 4 (768x1280).
So when I run this on an emulator (Nexus 4 size) and I touch the input fields, the keyboard either: blocks the inputs, or moves the two buttons at the bottom and overlaps them on something else.
So, to solve it I wrapped the entire layout on a ListView(), but now the bottom buttons, which are wrapped on a Row(), just won't stay at the bottom.
This is my code without the ListView and working on high res, but not on low:
return Form(
Stack(
Center(
Column(
...
),
),
Align(
alignment: Alignment.bottomCenter,
child: Row(
...
),
),
),
);
This is how it looks with resizeToAvoidBottomPadding: false
And this is how it looks with the value set to true
Thanks, everyone.
Did you try to use SingleChildScrollView ?
It is a widget for making the page able to resize the height and as well scrolling , for the listview thats not what is the listview for , you should add listview when you get an unknown amount of data,
We don't normally use it to just adjust the view.
ok so i edited the code as in here and i can scroll normally after the keyboard pop up and the view is good and i can click on the button normally try it.
Widget formWidget(){
return new Scaffold(
// appBar: AppBar(
// // Here we take the value from the MyHomePage object that was created by
// // the App.build method, and use it to set our appbar title.
// title: Text(widget.title),
// ),
body:Column(
children: <Widget> [
Expanded(
child:SingleChildScrollView(
child: Form(
child:
// Stack(
// children: <Widget>[
// Center(
// child: SingleChildScrollView(
// child:
Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisSize: MainAxisSize.max,
children: [
Padding(
padding: (MediaQuery.of(context).size.height) > 600
? const EdgeInsets.only(top: 0.0)
: const EdgeInsets.only(top: 30.0),
child: Image(
image: AssetImage('assets/favIcon.png'),
width: 88.0,
height: 88.0,
),
),
Padding(
padding: const EdgeInsets.fromLTRB(0, 28.0, 0, 12.0),
child: Text(
'Delegados',
style: TextStyle(
fontFamily: 'Archia',
fontSize: 32.0,
),
),
),
Text(
'Introduce tus datos de acceso aquí.',
style: TextStyle(
color: Color(0xff83868F),
fontFamily: 'Brutal',
fontSize: 14.0,
),
),
Padding(
padding:
const EdgeInsets.fromLTRB(16.0, 26.0, 16.0, 12.0),
child: TextFormField(
decoration: InputDecoration(
labelText: 'Correo',
filled: true,
fillColor: Color(0xffF0F1F5),
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(8.0),
borderSide: BorderSide(
width: 0,
style: BorderStyle.none,
),
),
),
style: TextStyle(
fontFamily: 'Brutal',
color: Color(0xff1A1B1F),
),
controller: TextEditingController() ,
textInputAction: TextInputAction.next,
),
),
Padding(
padding: const EdgeInsets.fromLTRB(16.0, 0, 16.0, 12.0),
child: TextFormField(
keyboardType: TextInputType.emailAddress,
decoration: InputDecoration(
labelText: 'Contraseña',
filled: true,
fillColor: Color(0xffF0F1F5),
suffixIcon: Icon(Icons.remove_red_eye),
border: OutlineInputBorder(
borderRadius: BorderRadius.circular(8.0),
borderSide: BorderSide(
width: 0,
style: BorderStyle.none,
),
),
),
style: TextStyle(
fontFamily: 'Brutal',
color: Color(0xff1A1B1F),
),
controller: TextEditingController() ,
//focusNode:FocusNode(),
obscureText: true,
),
),
Align(
alignment: Alignment.centerRight,
child: Padding(
padding: const EdgeInsets.fromLTRB(0, 0, 0, 26.0),
child: CupertinoButton(
onPressed: () {},
child: Text(
'Olvidé mi Contraseña',
style: TextStyle(
color: Color(0xff565A66),
fontFamily: 'Brutal',
fontSize: 14.0,
),
),
),
),
),
Padding(
padding: const EdgeInsets.fromLTRB(16.0, 0, 16.0, 0),
child: ButtonTheme(
minWidth: double.infinity,
child: InkWell(
// onTap: state is! LoginLoading
// ? _onLoginButtonPressed
// : null,
child: Container(
height: 48.0,
width: 500.0,
decoration: BoxDecoration(
color: Color(0xff00CC36),
borderRadius: BorderRadius.circular(8.0),
),
child: Align(
alignment: Alignment.center,
child: Container(
child:
// state is LoginLoading
// ? CircularProgressIndicator():
Text(
'INGRESAR AHORA ›',
style: TextStyle(
color: Colors.white,
fontFamily: 'Brutal',
fontSize: 14.0,
),
),
)),
),
),
),
),
],
),
// ),
)
,
// aqui va <<<<<<<<<<<<
// ],
// ),
)
),
Align(
alignment: Alignment.bottomCenter,
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
CupertinoButton(
onPressed: () {},
child: Text(
'¿No tienes cuenta?',
style: TextStyle(
color: Color(0xff83868F),
fontFamily: 'Brutal',
fontSize: 14.0,
),
),
),
InkWell(
onTap: null,
child: Container(
height: 32.0,
width: 112.0,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(6.0),
border: Border.all(
color: Color(0xffD7D9E0),
width: 1.0,
),
),
child: Align(
alignment: Alignment.center,
child: Text(
'CONTACTANOS',
style: TextStyle(
color: Color(0xff565A66),
fontFamily: 'Brutal',
fontSize: 11.0),
),
),
),
),
],
),
),
]
)
,
// )
);
}
In your Scaffold can you try this.
Scaffold(
resizeToAvoidBottomInset: false,
...
);
I position two elements in the center and bottom of the screen by this code.
body: Column(
children: [
Expanded(
child: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
SizedBox(
height: 80,
width: 80,
child:
Image(image: AssetImage("assets/images/logo.png"))),
SizedBox(height: 10),
Text(
"Tings App",
style: TextStyle(fontSize: 36),
),
SizedBox(height: 10),
TextFormField(
controller: _emailController,
decoration: InputDecoration(
border: OutlineInputBorder(),
isDense: true,
labelText: 'Email/phone'),
validator: (value) {
if (value.isEmpty) {
return 'Please enter a valid email';
}
return null;
},
),
],
),
),
),
Align(
alignment: Alignment.bottomCenter,
child: Container(
padding: EdgeInsets.all(20),
child: Column(
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
_isLoading
? CircularProgressIndicator()
: SizedBox(
width: MediaQuery.of(context).size.width * 0.7,
height: 60.0,
child: ElevatedButton(
style: ButtonStyle(
shape: MaterialStateProperty.all<
RoundedRectangleBorder>(
RoundedRectangleBorder(
borderRadius: BorderRadius.circular(100.0),
),
),
),
child: Text(
"SignIn",
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.w800,
fontSize: 18),
),
onPressed: () {
_login(context);
},
),
),
SizedBox(height: 16),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
"Don't have account?",
style: TextStyle(fontSize: 16),
),
SizedBox(width: 6),
TextButton(
onPressed: () {
Navigator.push(
context, SlideRightRoute(page: Signup()));
},
child: Text("SignUp"),
),
],
)
],
),
),
)
],
),
i have just started learning how to develop apps in flutter...
but i have something to ask about:
am trying to place some widgets at specific place of the screen in all screens..
for example here's my code:
class _HomePageState extends State<HomePage> {
#override
Widget build(BuildContext context) {
return new Scaffold(
body: new Container(
child: Column(
children: [
Container(
padding: EdgeInsets.only(top: 50.0),
child: new Image.asset(
'assets/images/walk1ar.png',
fit: BoxFit.cover,
height: 30.0,
width: 169.0,
alignment: Alignment.center,
),
),
new Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(
padding: EdgeInsets.only(top: 30.0, bottom: 5.0),
child: new Image.asset(
'assets/images/walkside.png',
fit: BoxFit.cover,
height: 445.0,
width: 14.0,
alignment: Alignment.centerRight,
),
),
Container(
padding: EdgeInsets.only(
top: 30.0, bottom: 5.0, left: 50.0, right: 50.0),
child: new Image.asset(
'assets/images/walkpic1.png',
fit: BoxFit.cover,
height: 445.0,
width: 250.0,
alignment: Alignment.center,
),
),
Container(
padding: EdgeInsets.only(top: 30.0, bottom: 5.0),
child: new Image.asset(
'assets/images/walkside.png',
fit: BoxFit.cover,
height: 445.0,
width: 14.0,
alignment: Alignment.centerLeft,
),
),
],
),
new Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(
child: Text(
'اهلاً وسهلاً',
style:
new TextStyle(fontSize: 20.0, color: Color(0xFF49C275)),
)),
],
),
new Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(
padding: EdgeInsets.only(bottom: 5.0),
child: Text(
'أهلا وسهلا بكم في معرض وظائف ٢٠١٨',
style:
new TextStyle(fontSize: 14.0, color: Color(0xFF707070)),
)),
],
),
new Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
mainAxisAlignment: MainAxisAlignment.end,
children: <Widget>[
Container(
child: new RaisedButton(
child: const Text(
'إبدأ',
),
color: Color(0xFF49C275),
elevation: 71.0,
splashColor: Colors.blueGrey,
onPressed: () {
// Perform some action
},
),
)
],
),
],
)),
);
}
here i want the last widget which is the button to be at the bottom of the screen always ... also the walkside image .. i want one to stick to the right side of the screen and the other to the left always..
how to do so?
You can use stack and align your button to the end of the screen. Here is an example:
Stack(
children: <Widget>[
Align(
alignment: Alignment.bottomCenter,
child: Container(
width: width,
height: 40.0,
child: RaisedButton(
color: azulClaro,
child: Text(
'My Button',
style: TextStyle(
color: Colors.white,
),
),
),
),
),
],
);