I have a flutter application with two screens. Screen1: StatefulWidget with BottomNavigationBar. I'm using this as my "main" screen and I want to load different widgets inside this, depending on which button in the BottomNavigationBar was clicked (for example Screen2).
Screen2: Multiple TextFields and Buttons listed vertically (all inside SingleScrollView). Unfortunately the ScrollView isn't scrolling.
Screen1:
@override
Widget build(BuildContext context) {
return Scaffold(
resizeToAvoidBottomPadding: false,
body: new Stack(
children: <Widget>[
new Container(
decoration: new BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
stops: [0,0.4,1],
colors: [
Color(0xFF0A9B8A),
Color(0xFF0A9B8A),
Color(0xFF6FA7A1),
]
)
),
),
new Column(
children: <Widget>[
new Container(
alignment: Alignment.topCenter,
padding: new EdgeInsets.only(top: 35, left: 50, right: 50),
child: Image.asset('assets/images/123.png', fit: BoxFit.cover, height: 30.0,),
),
_pages[_curIndex],
],
)
],
),
Screen2:
@override
Widget build(BuildContext context) {
return SingleChildScrollView(
scrollDirection: Axis.vertical,
child: new Column(
children: <Widget>[
Padding(padding: EdgeInsets.only(top: 75)),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
FlatButton(
child: Column(
children: <Widget>[
Image.asset("assets/images/abc.png", height: 100),
Text("Bild auswählen", style: TextStyle(color: Colors.white, fontSize: 18))
],
)
)
],
),
Padding(padding: EdgeInsets.only(top: 40, left: 40, right: 40),
child: TextField(
textAlign: TextAlign.center,
cursorColor: Colors.grey,
decoration: new InputDecoration(
enabledBorder: new UnderlineInputBorder(
borderSide: new BorderSide(
color: Colors.white
),
),
focusedBorder: new UnderlineInputBorder(
borderSide: new BorderSide(
color: Colors.white
),
),
hintText: 'Titel',
),
),
),
Padding(
padding: EdgeInsets.only(top: 20, left: 40, right: 40),
child: TextField(
textAlign: TextAlign.center,
cursorColor: Colors.grey,
decoration: new InputDecoration(
enabledBorder: new UnderlineInputBorder(
borderSide: new BorderSide(
color: Colors.white
),
),
focusedBorder: new UnderlineInputBorder(
borderSide: new BorderSide(
color: Colors.white
),
),
hintText: 'Beschreibung',
),
),
),
This screen just consists of multiple different TextFields and Buttons. I've not listed them all here, because I think they are unnecessary for my problem.
So my SingleScrollView in Screen2 is not scrolling and it is too large for my screen. I also get following error:
I/flutter (21813): ══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════
I/flutter (21813): The following message was thrown during layout:
I/flutter (21813): A RenderFlex overflowed by 61 pixels on the bottom.
I/flutter (21813):
I/flutter (21813): The overflowing RenderFlex has an orientation of Axis.vertical.
I/flutter (21813): The edge of the RenderFlex that is overflowing has been marked in the rendering with a yellow and
I/flutter (21813): black striped pattern. This is usually caused by the contents being too big for the RenderFlex.
I/flutter (21813): Consider applying a flex factor (e.g. using an Expanded widget) to force the children of the
I/flutter (21813): RenderFlex to fit within the available space instead of being sized to their natural size.
I/flutter (21813): This is considered an error condition because it indicates that there is content that cannot be
I/flutter (21813): seen. If the content is legitimately bigger than the available space, consider clipping it with a
I/flutter (21813): ClipRect widget before putting it in the flex, or using a scrollable container rather than a Flex,
I/flutter (21813): like a ListView.
I/flutter (21813): The specific RenderFlex in question is:
I/flutter (21813): RenderFlex#b781d relayoutBoundary=up2 OVERFLOWING
I/flutter (21813): creator: Column ← Stack ← MediaQuery ← LayoutId-[<_ScaffoldSlot.body>] ← CustomMultiChildLayout ←
I/flutter (21813): AnimatedBuilder ← DefaultTextStyle ← AnimatedDefaultTextStyle ← _InkFeatures-[GlobalKey#53b39 ink
I/flutter (21813): renderer] ← NotificationListener<LayoutChangedNotification> ← PhysicalModel ←
I/flutter (21813): AnimatedPhysicalModel ← ⋯
You should wrap your scrollView widget with Expanded, which will size it exactly to fit the rest of the screen. In your column:
Column(
children: Widget[
child1,
child2,
Expanded(
child: ScrollViewWidget()
)
]
)
That's what most likely to be stopping your scrolling.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.