I am working on the skeleton of a tablet app with flutter and I am facing, probably a very simple issue, but it is getting tricky for me to figure out what is going on here.
Basically the skeleton of the app should look something like this:
For that, I have written a simple Stateless class like this:
class BaseDetailsRoute extends StatelessWidget {
#override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.grey,
body: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Flexible(flex: 1, child: _selectionColumn()),
Flexible(flex: 7, child: _contentArea())
],
),
);
}
Widget _contentArea() => Container(color: Colors.orange,);
Column _selectionColumn() => Column(
children: <Widget>[
Expanded(child: Container(color: Colors.blue,))
],
);
}
Which is giving me ALMOST the expected result:
The little issue here is on the bottom of the screen, as you can see, in the Scaffold, I have put backgroundColor: Colors.grey, and, after rendering the Row in the screen, it seems like for some reason I cannot make it take the whole available height, and I still see a bit of the grey background color of the Scaffold on the bottom.
I have tried wrapping the whole Scaffold inside a SafeArea widget, but it did not work.
How can I fix this in an easy way, meaning not having to add a bunch of other widgets?
It's kind of weird but your code is working as intended on my side (For both Portrait and Landscape). What emulator are you using?
See Picture: Pixel 2 API 29 Emulator Portrait
Pixel 2 API 29 Emulator Lanscape
could you Please try
child: Column(
mainAxisSize: MainAxisSize.max,
children: <Widget>[
and let me know is it working
Related
I'm creating a card game and my UI has a Column() with various combinations of children widgets. One child is a Row
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(),
Container(),
],
),
The Container() widgets each display what looks like playing cards. They have BoxDecorationsto provide a border + a child that's a Row(). The Row's children display a number (text) and a suit (image).
I would like to flash text over the two playing cards, something that's visible for just a couple seconds, e.g., "Well done." Although I'm always open to help, I assume this will amount to (Rich)Text() widgets and some sort of timer or Duration object, and that I can figure it out.
What I'm struggling with is figuring out how to create a text overlay that is both on top of and spans the two images. Do I have to do something like wrap the higher level Row() object in a Stack()? I hate all that nesting, plus I don't know how to have the text always be on top of everything else.
I think you are looking for Overlay widget:
Scaffold(
body: Container(child: Overlay(initialEntries: [
OverlayEntry(builder: (_) => Image.network("https://source.unsplash.com/random", fit: BoxFit.cover,)),
OverlayEntry(builder: (_) => Center(child: Text("Overlay", style: TextStyle(color: Colors.yellow),))),
])),
),
For now I am going with (pseudocode):
Stack(
children: <Widget>[
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(),
Container(),
],
),
Center(
child: Text(),
),
],
),
With the Row() centered and the child:Text() centered, everything lines up and looks good. I do, however, think I need to spend time and learn about Positioned() widgets. I think that will ultimately be a better solution.
I am a beginner to Flutter and I tried creating a dummy login page. When I tried to run the app it was flawless on Pixel 3 XL but it was not good in Pixel 2 XL. How would I manage the responsiveness? I came across the MediaQuery widget, but how could I create a completely responsive app for each device? There are many variations among today's mobile devices (like notched display, fullscreen, etc) and thereafter comes the tablets. How could I manage this? Should I write code for each and every resolution?
Here is my design on Pixel 3 XL and Pixel 2 XL
You can use SingleChildScrollView as parent,
SingleChildScrollView(
child: Container(
width: MediaQuery.of(context).size.width,
height: MediaQuery.of(context).size.height,
child: Stack(
),
),
);
Edit: Also remove fit: StackFit.expand, from Stack widget.
The reason behind this problem is the sizedbox widget with height 100px.
removing that and using mainaxisalignment as spaceevenly gives the required output.
Here is the modified code:
#override
Widget build(BuildContext context) {
return Scaffold(
resizeToAvoidBottomPadding: false,
body: Stack(
fit: StackFit.expand,
children: <Widget>[
bgimage,
Column(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
logoimage,
userName(),
password(),
forgotPassword(),
loginButton(),
googleSignIn(),
signUp()
],
),
],
),
);
}
This solves the problem.
Best easiest way to make responsive UI for different screen size is Sizer plugin.
Responsive UI in any screen size device also tablet.
Check it this plugin ⬇️
https://pub.dev/packages/sizer
.h - for widget height
.w - for widget width
.sp - for font size
Use .h, .w, .sp after value like this ⬇️
Example:
Container(
height: 10.0.h, //10% of screen height
width: 80.0.w, //80% of screen width
child: Text('Sizer', style: TextStyle(fontSize: 12.0.sp)),
);
I have build many responsive UI with this plugin.
Use this package flutter_next using this you design responsive UI even for desktop web and everything and they have an demo also so you can check there
There is a widget (for example text). In the real example it comes after another widget in Column. How to put it in the center of the screen? As I understand it, the Column does not. How can this be done? Or are there other ways to specify the location of items?
Column takes all the available space of the parent and by default aligns the items to start
You can change fix this changes the MainAxisAlignment to center.
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text("test"),
],
),
or changing parents height and move it to the center (be careful if you add many items it will cause overflow)
child: Center(
child: Container(
height: 25,
child: Column(
children: <Widget>[
Text("test"),
],
),
),
),
Using Stack widget you can do it:
var textEmpty = Text("Some Text");
Stack(children: <Widget>[
Column(children: <Widget>[
Container(
,margin: EdgeInsets.only(top: 100.0)
,child: Center(child: textEmpty, ),)],),
listView,
]);
Use Center Wigdet instead of Container. Hope this helps!
No worries where it comes from. It depends on the view where you have added it.
If you want to show in the center then just use Center widget
If you want to use Container widget then, you have to add the width and height both to double.infinite
If you want to use it in the same widget then you can use the Stack widget as well.
It totally depends on the requirement of the view and in which way you are tried to implement it.
I am a web dev in MS stack trying flutter for a personal project of mine. I want to create a layout like in the below URL in the meeve app with circular images with text below the image button/icon.
https://www.thedroidsonroids.com/blog/apps-made-with-flutter#meeve
I tried the layout given in the example on flutter docs below but it is not what I am looking for and I am not able to re purpose this for my case. https://flutter.dev/docs/cookbook/lists/grid-lists
Any leads in this respect is appreciated.
You can use CircleAvatar in a Column.
#override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
CircleAvatar(backgroundImage: AssetImage("assets/images/chocolate_pic.png"), radius: 40),
SizedBox(height: 12),
Text("Chocolate"),
],
),
),
);
}
I am trying to render a dribbble sample.
In normal android using XML, I can make any part stick to any side of another view. If I were using ConstraintLayout, I could make the bottom part stick to the bottom of the parent and let the top part expand to available height.
The design on both emulators is Flutter code.
On larger screens, there is some empty space on the bottom. How do I remove that?
Currently, I am using Flexible with flex values but it doesn't look right. How to make this reactive?. Is the use of Flexible correct?
The code can found here on pastebin
There is nothing like android:layout_gravity in Flutter, however you can pretty much achieve anything in Flutter. So, here you can use use Spacer(). Like:
return Column(
children: <Widget>[
Spacer(),
Align(alignment: Alignment.centerRight, child: Text("123")),
YourButtonsWidget(),
],
);
try to change CalculatorPrototype's build function like this
#override
Widget build(BuildContext context) {
return Scaffold(
body: Column(
mainAxisSize: MainAxisSize.min, // actually this line and the next one doesn't needed
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
Expanded(
child: display,
),
Container(
child: keypad,
),
],
),
);
}