what I want to do
I want to use a search button like on the top, go to another navigation page, and keep the navigativeBar,
I try the navigator.push(), but it will go to a new page without the navigativeBar,
What can I do?
Here is some of my code :
return Scaffold(
drawer: _buildDrawer(context),
body: IndexedStack(
index: pageIx,
children: <Widget>[
_buildBody(), Guanzhu(),
Tansuo(),
//Disan(list),
Setting(), Dier()
],
),
bottomNavigationBar: AnimatedBottomBar(
onBarTap: (index) => setState(() => pageIx = index),
barItems: widget.barItems,
animationDuration: const Duration(milliseconds: 150),
barStyle: BarStyle(fontSize: 20.0, iconSize: 30.0),
),
);
Related
I am pretty new to flutter/dart, so this might be a silly question...
I wanted to have a search bar, that when tapped the first time, displays a series of listview tiles (like pre-canned search terms). I wanted a subsequent tap to then open the soft keyboard for user input. As it stands now, a single tap opens the listview tiles, and also opens the soft keyboard.
After some looking around, I am thinking I would need to wrap the searchbar in a GestureDetector, and handle the tap / double-tap gestures through that. What I can't quite figure out, is how to tie the GestureDetector gestures, ontap and ondoubletap, to the child widget actions... I think when the searchbar gets focus (onTap), the soft keyboard opens, so not sure if that behavior can be (easily) uncoupled...
The flutter cookbook example uses this:
ScaffoldMessenger.of(context).showSnackBar(snackBar);
but the API docs say this only manages snackbars and MaterialBanners:
"Manages SnackBars and MaterialBanners for descendant Scaffolds."
Here is the framework I have so far:
Widget searchBar() {
//final FloatingSearchBarController searchBarController = FloatingSearchBarController();
return
GestureDetector(
onTap: () =>{},
onDoubleTap: () => {},
child: FloatingSearchBar(
controller: searchBarController,
hint: "search",
openAxisAlignment: 0.0,
width: 600,
axisAlignment: 0.0,
scrollPadding: const EdgeInsets.only(top: 16, bottom: 20),
elevation: 4.0,
onQueryChanged: (query) {
},
builder: (BuildContext context, Animation<double> transition) {
return ClipRRect(
child: Material(
color: Colors.white,
child: Container(
color: Colors.white,
child: Column(
children: [
ListTile(
title: const Text('Item 1'),
onTap: () {},
),
ListTile(
title: const Text('Item 2'),
onTap: () {},
),
ListTile(
title: const Text('Item 3'),
onTap: () {},
),
],
),
),
)
);
},
)
);
Any thoughts would be greatly appreciated!
I a working with ModalBottomSheet and I love the package. However I am encountering an issue when trying to navigate with in a ModalBottomSheet.
Here is a ScreenVideo for a better understanding.
As you can see the View is presented as a ModalBottomSheet. But when popping it, it is not simply dismissing to the bottom but instead it is popping to some empty screen with a MaterialPage Pop animation.
I changed my code so I can push with a MaterialPageRoute-Animation inside that ModalBottomSheet. Before that everything was working as expected.
Here is my Page:
class _AboutScreenState extends State<AboutScreen> {
#override
Widget build(BuildContext context) {
return Material(
color: AppColors.primary,
child: Navigator(
onGenerateRoute: (settings) => MaterialPageRoute(
builder: (context2) => Builder(
builder: (context) => CupertinoPageScaffold(
backgroundColor: AppColors.secondary,
resizeToAvoidBottomInset: false,
child: SafeArea(
child: Padding(
padding: EdgeInsets.all(sidePadding),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
mainAxisAlignment: MainAxisAlignment.end,
children: [
IconButtonWithExpandedTouchTarget(
onTapped: () {
Navigator.pop(context);
},
svgPath: 'assets/icons/down.svg',
),
],
),
Text(
'About',
style: AppTextStyles.montserratH2SemiBold,
),
...
RoundedCornersTextButton(
title: 'Impressum',
onTap: () {
Navigator.pop(context);
},
textColor: AppColors.primary,
backgroundColor: AppColors.secondary,
borderColor: AppColors.primary,
),
],
),
),
)),
),
),
),
);
}
}
I was simply following this example. What am I missing here? With the code above I can push inside the ModalSheet as expected with a MaterialPageRoute Animation but popping the first screen brings up the issue...
Let me know if you need any more info! Any help is appreciated :)
I think you are popping with the wrong context. The example is popping with rootContext, which is from the top-most widget in the hierarchy. You are popping from with context, defined at your lowest builder in the hierarchy.
I believe you are using the incorrect context. rootContext, which is from the top-most widget in the hierarchy, is what makes the sample pop. You're popping from your lowest builder in the hierarchy, which is dictated by context.
I want to make a steamer to the next page using the Smooth Page Indicator widget. I added this widget to the page but I don't know how to add the pages I want to go to. I will be grateful for your help
My code :
final controller = PageController(viewportFraction: 0.8, keepPage: true);
#override
Widget build(BuildContext context) {
return Scaffold(
body:
Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
SizedBox(height: 35.0),
Container(
child: SmoothPageIndicator(
controller: controller,
count: 2,
effect: JumpingDotEffect(
dotHeight: 16,
dotWidth: 16,
jumpScale: .7,
verticalOffset: 15,
),
),
),
]),
floatingActionButton: FloatingActionButton(
onPressed: () {
setState(() {
_scanQR();
});
},
child: const Icon(Icons.qr_code),
backgroundColor: Colors.pink,
),
);
}
the name of my page to which I want to go Page2, and this Page1
I think you might be looking for the PageView widget : https://api.flutter.dev/flutter/widgets/PageView-class.html
By passing the same PageController to both, the PageView and the SmoothPageIndicator widgets you should be able to swipe left and right AND see the dots move along. That simple.
How do I this bottom bar menu in Flutter?
bottom menu hidden
bottom menu opened
There is a bar at bottom and when tapped, the bar is opened with a list and a button
You can use BottomSheet here's example :
void _modalBottomSheetMenu(BuildContext context){
showModalBottomSheet(
context: context,
builder: (builder){
return ListView(
children: [
ListTile(
leading: CircleAvatar(),
title: Text("John Doe"),
subtitle: Text("Nearby"),
),
RaisedButton(child: Text("Button"), onPressed: () => print("Pressed"))
]
);
}
);
}
For more information Flutter Documentation , Medium Guide
Identify status e.g. isExpanded
then display your cells(Widgets) based on that. Either you can use Visibility widget,
Visibility(
visible: (isExpanded),
child: Row(
children: <Widget>[
Image.asset('yourImage')
Text("some text"),
],
),
)
Or you can just use a condition like,
if (a == b)
Row(
children: <Widget>[
Image.asset('yourImage')
Text("some text"),
],
),
I am trying to display a snack bar on my screen. But the snack bar is covering the whole screen instead of just being displayed at the bottom. Here is my code.
Scaffold(
key: _scaffoldKey ,
backgroundColor: Colors.pink,
body: Stack(
children: <Widget>[
Text('Display Scaffold'),
Positioned(
top: 110,
child: Container(
child: FlatButton(
onpressed: (){
final snackBar = SnackBar(duration: Duration(seconds: 4),
content: Center(child: Text('Welcome')),
) ;
_scaffoldKey.currentState.showSnackBar(snackBar);
}
),
),
),
),
);
Remove Center widget. This makes the widget as big as the parent allows.
If you need to center your text, just use textAlign: TextAlign.center property in Text widget.
Have you try this ?
Scaffold.of(context).showSnackBar(snackBar);
instead of
_scaffoldKey.currentState.showSnackBar(snackBar);
It may be the solution.
I hope it could help you !