when using drawer widget in flutter ,taps make me navigate to another page - flutter-layout

this error appears when taping drawer widget ,the page which appeares should appears when taping child of drawer and there is an image descripes what is happening ...............................................................
return Drawer(
child: Column(
children: [
Container(
color: Colors.yellow,
alignment: Alignment.topLeft,
padding:const EdgeInsets.all(20),
height: 120,
width: double.infinity,
child: Text(
'cook up ',
style: TextStyle(
fontSize: 30,
fontWeight: FontWeight.bold,
color: Theme.of(context).primaryColor),
),
),
const SizedBox(height:20),
BuildList('Meals', Icons.restaurant,(){
Navigator.of(context).push(MaterialPageRoute(builder: (_){return FilterScreen();}));
}),
BuildList('Filters ', Icons.settings,(){
Navigator.of(context).push(MaterialPageRoute(builder: (_){return TabsScreen();}));
}),
],
),
);
}
}

Related

How to make modify Sliverappbar so I can see the background image with FlexibleSpaceBar when I scroll up?

How to make modify Sliverappbar so I can see the background image with FlexibleSpaceBar when I scroll up?
SliverAppBar(
expandedHeight: 200.0,
floating: false,
pinned: true,
flexibleSpace: FlexibleSpaceBar(
centerTitle: true,
title: Text("Collapsing Toolbar",
style: TextStyle(
color: Colors.white,
fontSize: 16.0,
)),
background: Image.network(
"https://images.pexels.com/photos/396547/pexels-photo-396547.jpeg?auto=compress&cs=tinysrgb&h=350",
fit: BoxFit.cover,
)),
),

I'm afraid this is the standard behavior of the FlexibleSpaceBar. You can change the color but not make it transparent.
A workaround I found is to use a Stack instead of the FlexibleSpaceBar:
SliverAppBar(
expandedHeight: 200.0,
floating: true,
pinned: true,
snap: true,
flexibleSpace: Stack(
children: <Widget>[
Positioned.fill(
child: Image.network(
"https://images.pexels.com/photos/396547/pexels-photo-396547.jpeg?auto=compress&cs=tinysrgb&h=350",
fit: BoxFit.cover,
),
),
Positioned.fill(
child: Align(
alignment: Alignment.bottomCenter,
child: Padding(
padding: const EdgeInsets.only(bottom: 8.0),
child: Text(
"Collapsing Toolbar",
style: TextStyle(
color: Colors.white,
fontSize: 24.0,
),
textAlign: TextAlign.center,
),
),
),
),
],
),
),

flutter container with different vertical spacings by the same contents

I have different vertical spacing in two containers with the same contents. I have tried it with different widgets, it is always the same.
The 'Card' widget contains a 'Column' with two identical 'Containers', each containing an identical 'ListTile' with an identical 'child: Text'.
What can I do to make the vertical distances equal and as small as possible?
Container(
width: screenWidth * 0.5, height: 300,
padding: EdgeInsets.all(10),
child: Column(
children: <Widget>[
Container(
width: screenWidth * 0.5, height: 280,
padding: EdgeInsets.all(1),
child: Card(
shape: RoundedRectangleBorder(
borderRadius: const BorderRadius.all(Radius.circular(8.0),),
side: BorderSide(
color: Colors.black,
width: 1.0,),
),
color: Colors.white,
elevation: 4.0,
shadowColor: Colors.blue,
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
children:[
Container(
padding: EdgeInsets.all(0.0),
margin: EdgeInsets.all(0.0),
decoration: BoxDecoration(
color: Colors.yellow,
border: Border.all(color: Colors.black),
),
child: ListTile(
contentPadding: EdgeInsets.symmetric(vertical: 0.0, horizontal: 5.0),
dense: true,
isThreeLine: false,
title: Text(
selTitle,
style: TextStyle(
color:Colors.black,
//backgroundColor: Colors.limeAccent,
backgroundColor: selColor(selIndex),
fontSize: 20,
fontWeight: FontWeight.bold,
),
)
)
),
Container(
padding: EdgeInsets.all(0.0),
margin: EdgeInsets.all(0.0),
decoration: BoxDecoration(
color: Colors.yellow,
border: Border.all(color: Colors.black),
),
child: ListTile(
contentPadding: EdgeInsets.symmetric(vertical: 0.0, horizontal: 5.0),
dense: true,
isThreeLine: false,
title: Text(
"noch ein sehr langer Text: jihiuwh uewua8h ieshg lisru hirluh spi",
style: TextStyle(
backgroundColor: myBTN_HELLGRAU,
fontSize: 16,
)
),
)
)
]
)
),
)
]
)
),
see details and
here is the whole application
The vertical distances in 'Andorra' are much larger than in the text below.
How do I get the spacing in the upper field smaller?

I have found a solution. Insert into the first ListTile solved my problem:
visualDensity: VisualDensity(horizontal: 0, vertical: -4),

Flutter screenshot without using RepaintBoundary

I am working on a drawing app. I can get a screenshot of a widget using RepaintBoundary but I need to update it with a button which is outside. In my case, I can clear the list of points with a FlatButton but my Container is not clearing because of RepaintBoundary I need to get a screenshot of my Container without RepaintBoundary or I should update my Container from outside they both works for me. Thanks.
return
SingleChildScrollView(//physics: NeverScrollableScrollPhysics(),
child: Column(
children: <Widget>[
RepaintBoundary(
key: _signKey,
child: new Container(
width: 100.0 * MediaQuery.of(context).devicePixelRatio ,
height: 150.0 * MediaQuery.of(context).devicePixelRatio,
color: Colors.black12,
child: GestureDetector(
onPanUpdate: (DragUpdateDetails details) {
setState(() {
RenderBox object = context.findRenderObject();
Offset _localPosition =
object.globalToLocal(details.globalPosition);
points = new List.from(points)
..add(_localPosition);
});
},
onPanEnd: (DragEndDetails details) => points.add(null),
child: new CustomPaint(
painter: new DrawingPainter(points: points),
size: Size.infinite,
),
),
),
),
Row(
children: <Widget>[
FlatButton( //Button to clear container
padding: EdgeInsets.fromLTRB(20, 10, 20, 10),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(8)),
color: Colors.redAccent,
textColor: Colors.black,
onPressed: (){
setState(() {
points.clear();
});
},
child: Text('Sil'),
),
],
),
],
),
);

How to set background colour to the width containing text in flutter

I have a text which is basically a title in a box and I want to provide a background color to the space behind that text .
Padding(
padding: EdgeInsets.all(15.0),
child: Text(
'Your Profile',
style: TextStyle(
color: Colors.blue,
fontSize: 26.0,
background: Paint()..color = Colors.blue,
),
This is what I tried but it seems not working.
Expected:Here
"Your profile" text has a background color, I need to achieve this.

You can wrap it with a Container() but, most probably you have to define the width with something like double.maxFinite
Check this
Container(
width: double.maxFinite,
color: Colors.red, //define the background color
child: Text("My Text"),
)

Short answer:
Text(
"Hello World",
style: TextStyle(backgroundColor: Colors.blue), // give any color here
)
Full answer
You can use this in your showDialog call, Here is the full widget you were looking for.
Dialog(
elevation: 12,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Container(
color: Colors.blue[800],
width: double.maxFinite,
alignment: Alignment.center,
padding: EdgeInsets.symmetric(vertical: 16),
child: Text(
"Your Profile...",
style: TextStyle(fontSize: 20, color: Colors.white),
),
),
Padding(
padding: EdgeInsets.symmetric(horizontal: 32),
child: Column(
children: <Widget>[
SizedBox(height: 12),
TextField(decoration: InputDecoration(hintText: "Select a Photo")),
TextField(decoration: InputDecoration(hintText: "Take a Photo...")),
TextField(decoration: InputDecoration(hintText: "Choose form Library")),
],
),
),
Container(
padding: EdgeInsets.symmetric(vertical: 12),
child: RaisedButton(
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(50)),
child: Text("Back"),
onPressed: () {},
color: Colors.red,
textColor: Colors.white,
),
)
],
),

I agree with Saeb Nabil's answer, the easiest way is to use a container. That way you can also control the padding around the text. You can also use .withOpacity() to add transparency if you wish:
Container(
width: 100,
padding: EdgeInsets.symmetric(horizontal: 0, vertical: 10),
color: Colors.grey[900].withOpacity(0.6),
child: Text(
"Hello world!",
style: TextStyle(
fontSize: 14,
color: Colors.white),
), // Text
), // Container

How to use MediaQuery to set scaleFactor for text in Flutter?

With MediaQuery I can get height and width of my Samsung S7 Edge screen size so I can work with it. But how to use MediaQuery to layout the multiple column dynamic text in ListTile? In my demo project I set the text size to 12 and in Samsung S6 I get overflow issues... Any info or example for text scale factor in Flutter?
I found one solution here (How can Flutter handle dpi text and image size differences) and I try to build demo project. S6 textScaleFactor is 1.1 an the S7 is 1.0....
My original demo app that I test it with S7 text size was 12. And when I try to test it in S6 I get overflow issue... I need to scale down or up with MediaQuery to set text scale factor, so it can work most of the devices without getting a overflow issues?
In ListTile I have a column that has 4 separate lines of text and all the value comes from database. If the text value is long I get a overflow issues on S6 device. So my question is How to use MediaQuery to set scaleFactor for text in Flutter?
Update:
new ListTile(
trailing: new Icon(Icons.chevron_right),
onTap: () {
},
title: new Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
new Text(
‘My Account Details:’,
style: new TextStyle(
fontSize: 14.0, fontWeight: FontWeight.bold, color: Colors.black),
overflow: TextOverflow.fade,
),
],
),
subtitle: new Column(
children: <Widget>[
new Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
new Text(‘Hello Flutter’,
style: new TextStyle(
fontSize: 12.0, color: Colors.black54),
overflow: TextOverflow.fade,
),
new Text(’Today is **************’,
style: new TextStyle(
fontSize: 12.0, color: Colors.black54),
overflow: TextOverflow.fade,
),
],
),
new Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
new Text(‘Name’,
style: new TextStyle(
fontSize: 12.0, color: Colors.black54),
overflow: TextOverflow.fade,
),
new Text(‘Dart’,
style: new TextStyle(
fontSize: 12.0, color: Colors.black54),
overflow: TextOverflow.fade,
),
],
),
new Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
new Text(’Surname’,
style: new TextStyle(
fontSize: 12.0, color: Colors.black54),
overflow: TextOverflow.fade,
),
new Text(‘Flutter’,
style: new TextStyle(
fontSize: 12.0, fontWeight: FontWeight.bold, color: Colors.black),
overflow: TextOverflow.fade,
),
],
),
new Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
new Text(‘Account Name: Let’s Flutter all day long till down with fancy User Interface’,
style: new TextStyle(
fontSize: 12.0, color: Colors.black54),
overflow: TextOverflow.fade,
),
new Text(‘109.65’,
style: new TextStyle(
fontSize: 12.0, fontWeight: FontWeight.bold, color: Colors.black),
overflow: TextOverflow.fade,
),
],
),
],
),
),

You can solve your issue wrapping your Text widget into a Flexible to avoid the overflow. I put maxLines 1 to see the Fade overflow :
new Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Flexible(
child: new Text(
"Account Name: Let's Flutter all day long till down with fancy User Interface",
maxLines: 1,
style: new TextStyle(
fontSize: myTextSize, color: Colors.black54),
overflow: TextOverflow.fade,
),
),
new Text(
"109.65",
style: new TextStyle(
fontSize: myTextSize,
fontWeight: FontWeight.bold,
color: Colors.black),
overflow: TextOverflow.fade,
),
],
),
I added a global variable :
var myTextSize = 12.0;
Also you can use the LayoutBuilder in order to get the maxHeight or maxWidth of your device, after that you can change the text size like this example:
var myTextSize = 12.0;
return LayoutBuilder(builder: (context, boxConstraints) {
print(boxConstraints.maxHeight);
if (boxConstraints.maxHeight <= 667.0){
myTextSize = 10.0;
}
return Container(
child: new ListTile(
trailing: new Icon(Icons.chevron_right),
onTap: () {},
title: new Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
new Text(
"My Account Details:",
style: new TextStyle(
fontSize: 14.0,
fontWeight: FontWeight.bold,
color: Colors.black),
overflow: TextOverflow.fade,
),
],
),
subtitle: new Column(
children: <Widget>[
new Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
new Text(
"Hello Flutter",
style: new TextStyle(
fontSize: myTextSize, color: Colors.black54),
overflow: TextOverflow.fade,
),
new Text(
"Today is **************",
style: new TextStyle(
fontSize: myTextSize, color: Colors.black54),
overflow: TextOverflow.fade,
),
],
),
new Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
new Text(
"Name",
style: new TextStyle(
fontSize: myTextSize, color: Colors.black54),
overflow: TextOverflow.fade,
),
new Text(
"Dart",
style: new TextStyle(
fontSize: myTextSize, color: Colors.black54),
overflow: TextOverflow.fade,
),
],
),
new Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
new Text(
"Surname",
style: new TextStyle(
fontSize: myTextSize, color: Colors.black54),
overflow: TextOverflow.fade,
),
new Text(
"Flutter",
style: new TextStyle(
fontSize: myTextSize,
fontWeight: FontWeight.bold,
color: Colors.black),
overflow: TextOverflow.fade,
),
],
),
new Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Flexible(
child: new Text(
"Account Name: Let's Flutter all day long till down with fancy User Interface",
maxLines: 1,
style: new TextStyle(
fontSize: myTextSize, color: Colors.black54),
overflow: TextOverflow.fade,
),
),
new Text(
"109.65",
style: new TextStyle(
fontSize: myTextSize,
fontWeight: FontWeight.bold,
color: Colors.black),
overflow: TextOverflow.fade,
),
],
),
],
),
),
);
});

#override
Widget build(BuildContext context) {
return WidgetsApp(
// ...
builder: (context, child) {
final mediaQueryData = MediaQuery.of(context);
return MediaQuery(
data: mediaQueryData.copyWith(textScaleFactor: 1.5),
child: child,
);
},
);
}

If you want to make the Text font size to be Responsive
this is a simple trick
fontSize: MediaQuery.of(context).size.width * 0.05 //u can play with equation
or
fontSize: MediaQuery.of(context).size.width > 500 ?60
: MediaQuery.of(context).size.width < 300 ?40: 30,

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