我目前正在为应用程序开发 ui 的东西，所以问题是我有一个手势作为父级上下滑动，并基于它改变小部件的位置，但问题是子手势没有得到任何优先级 当点击它时，它给出了优先级。所以我的树结构是 Pageview.builder ，它有一个小部件，最上面的父级作为 Gesturedetector 和子级，任何人都可以告诉我我做错了什么或任何改进以获得每个手势。以下是我一直在处理的示例代码：
import 'dart:math';
import 'package:LocationAnimation/Model/device_model.dart';
import 'package:LocationAnimation/SplashPage/splash_page.dart';
import 'package:LocationAnimation/widgets/device_function_widget.dart';
import 'package:flutter/material.dart';
import 'package:flutter_svg/flutter_svg.dart';
import 'package:google_fonts/google_fonts.dart';
import 'Model/device_model.dart' as devices;
import 'Model/locations_model.dart' as locations;
import 'extensions/capitalize.dart';
void main() {
runApp(new MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
title: 'HAL',
home: MyHomePage(),
);
}
}
class SampleList {
final String locationName;
SampleList({this.locationName});
}
class MyHomePage extends StatefulWidget {
@override
State createState() => new MyHomePageState();
}
class MyHomePageState extends State<MyHomePage> with TickerProviderStateMixin {
final _controller = new PageController();
final _kArrowColor = Colors.black.withOpacity(0.8);
bool _isSwipe = false;
bool _isLoading = false;
var list = [
SampleList(locationName: 'Living Room'),
SampleList(locationName: 'Bed Room'),
SampleList(locationName: 'Back Porch Lights'),
SampleList(locationName: 'Basement Porch Lights'),
SampleList(locationName: 'Sample Room'),
];
@override
Widget build(BuildContext context) {
return new Scaffold(
body: new IconTheme(
data: new IconThemeData(color: _kArrowColor),
child: new Stack(
children: <Widget>[
new PageView.builder(
physics: _isSwipe
? NeverScrollableScrollPhysics()
: AlwaysScrollableScrollPhysics(),
controller: _controller,
itemCount: list.length,
itemBuilder: (BuildContext context, int index) {
return LocationDetails(
isLoading: _isLoading,
item: list[index],
onSwipeDown: () {
setState(() {
_isSwipe = false;
});
},
onSwipeUp: () {
setState(() {
_isSwipe = true;
});
},
);
},
),
],
),
),
);
}
}
class LocationDetails extends StatefulWidget {
final bool isLoading;
SampleList item;
final Function() onSwipeUp;
final Function() onSwipeDown;
LocationDetails(
{Key key, this.item, this.onSwipeUp, this.onSwipeDown, this.isLoading})
: super(key: key);
@override
_LocationDetailsState createState() => _LocationDetailsState();
}
class _LocationDetailsState extends State<LocationDetails> {
DragStartDetails startVerticalDragDetails;
DragUpdateDetails updateVerticalDragDetails;
bool moveWidget = false;
bool dismissSwipeText = true;
bool _isRotate = false;
int currentSelectedIndex = 0;
bool ignoreChildGestures = true;
bool _isSwpie = false;
@override
Widget build(BuildContext context) {
return Scaffold(
body: SafeArea(
child: Container(
child: GestureDetector(
onTap: () {
print('Tap');
},
onVerticalDragStart: (dragDetails) {
startVerticalDragDetails = dragDetails;
},
onVerticalDragUpdate: (dragDetails) {
updateVerticalDragDetails = dragDetails;
},
onVerticalDragEnd: (endDetails) {
double dx = updateVerticalDragDetails.globalPosition.dx -
startVerticalDragDetails.globalPosition.dx;
double dy = updateVerticalDragDetails.globalPosition.dy -
startVerticalDragDetails.globalPosition.dy;
double velocity = endDetails.primaryVelocity;
//Convert values to be positive
if (dx < 0) dx = -dx;
if (dy < 0) dy = -dy;
if (velocity < 0) {
widget.onSwipeUp();
print('drag up');
setState(() {
moveWidget = true;
_isSwpie = true;
});
} else {
widget.onSwipeDown();
print(' drag down');
setState(() {
moveWidget = false;
_isSwpie = false;
});
}
},
child: Container(
height: MediaQuery.of(context).size.height,
width: MediaQuery.of(context).size.width,
decoration: new BoxDecoration(
image: new DecorationImage(
colorFilter: ColorFilter.mode(
Colors.black.withOpacity(0.8), BlendMode.srcOver),
image: /* moveWidget
? */
AssetImage(
'Assets/backgroundImage.jpg',
),
/* : NetworkImage(widget.samplePage.networkImage), */
fit: BoxFit.fill,
),
),
child:
/* widget.isLoading
? Center(
child: CircularProgressIndicator(),
)
: */
Stack(
children: <Widget>[
AnimatedOpacity(
opacity: moveWidget ? 0 : 1,
duration: Duration(microseconds: 100),
child: Padding(
padding: const EdgeInsets.all(20.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Column(
children: <Widget>[
Icon(
Icons.power_settings_new,
color: Colors.white,
size: 30,
),
Icon(
Icons.more_horiz,
color: Colors.white,
size: 25,
)
],
),
Row(
children: <Widget>[
Column(
children: <Widget>[
Text(
'Inside Temp',
style: TextStyle(
color: Colors.white, fontSize: 18),
),
SizedBox(
height: 5,
),
Row(
children: <Widget>[
Icon(
Icons.ac_unit,
color: Colors.white,
size: 20,
),
SizedBox(
width: 10,
),
Text(
'19 C',
style: TextStyle(color: Colors.white),
),
],
)
],
),
SizedBox(
width: 10,
),
Column(
children: <Widget>[
Text(
'Outside Temp',
style: TextStyle(
color: Colors.white, fontSize: 18),
),
SizedBox(
height: 5,
),
Row(
children: <Widget>[
Icon(
Icons.ac_unit,
color: Colors.white,
size: 20,
),
SizedBox(
width: 10,
),
Text(
'19 C',
style: TextStyle(color: Colors.white),
),
],
)
],
),
],
)
],
),
),
),
AnimatedPositioned(
onEnd: () {
setState(() {
dismissSwipeText = !dismissSwipeText;
//print(dismissSwipeText);
});
},
curve: Curves.ease,
duration: Duration(milliseconds: 700),
bottom: moveWidget
? 10
: MediaQuery.of(context).size.height * 0.18,
left: 10.0,
right: 0.0,
top: moveWidget
? 50
: MediaQuery.of(context).size.height * 0.75,
child: AnimatedOpacity(
opacity: dismissSwipeText ? 1 : 0,
duration: Duration(milliseconds: 500),
child: Text(
'Swipe up to customize',
style: TextStyle(color: Colors.white, fontSize: 20),
),
),
),
AnimatedPositioned(
curve: Curves.ease,
duration: Duration(milliseconds: 700),
onEnd: () {
setState(() {
_isSwpie = true;
});
},
left: 10,
top: moveWidget
? 80
: MediaQuery.of(context).size.height * 0.80,
child: Container(
width: MediaQuery.of(context).size.width * 0.97,
child: Row(
mainAxisAlignment: MainAxisAlignment.start,
children: <Widget>[
GestureDetector(
onTap: () {
setState(() {
currentSelectedIndex = 0;
});
},
child: Container(
width: MediaQuery.of(context).size.width * 0.20,
height:
MediaQuery.of(context).size.height * 0.10,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(20),
color: currentSelectedIndex == 0
? Colors.blue
: Colors.grey[900],
),
child: Center(
child: Text(
'Lights',
style: GoogleFonts.lato(
color: Colors.white,
fontWeight: FontWeight.w700),
)),
),
),
Row(
children: <Widget>[
SizedBox(
width: 10,
),
GestureDetector(
onTap: () {
setState(() {
currentSelectedIndex = 1;
});
},
child: Container(
width: MediaQuery.of(context).size.width *
0.20,
height: MediaQuery.of(context).size.height *
0.10,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(20),
color: currentSelectedIndex == 1
? Colors.blue
: Colors.grey[900],
),
child: Center(
child: Text(
'Applicanes',
style: GoogleFonts.lato(
color: Colors.white,
fontWeight: FontWeight.w700),
)),
),
),
],
),
Row(
children: <Widget>[
SizedBox(
width: 10,
),
GestureDetector(
onTap: () {
setState(() {
currentSelectedIndex = 2;
});
},
child: Container(
width: MediaQuery.of(context).size.width *
0.20,
height: MediaQuery.of(context).size.height *
0.10,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(20),
color: currentSelectedIndex == 2
? Colors.blue
: Colors.grey[900],
),
child: Center(
child: Text(
'Sensors',
style: GoogleFonts.lato(
color: Colors.white,
fontWeight: FontWeight.w700),
)),
),
),
],
),
Row(
children: <Widget>[
SizedBox(
width: 10,
),
Container(
width:
MediaQuery.of(context).size.width * 0.20,
height:
MediaQuery.of(context).size.height * 0.10,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(20),
color: Colors.grey[900],
),
child: Center(
child: Text(
'Doors \n& Locks',
style: GoogleFonts.lato(
color: Colors.white,
fontWeight: FontWeight.w700),
)),
),
],
),
SizedBox(
width: 10,
),
],
),
),
),
AnimatedPositioned(
curve: Curves.ease,
duration: Duration(milliseconds: 400),
bottom: moveWidget
? 10
: MediaQuery.of(context).size.height * 0.20,
left: 10.0,
right: 0.0,
top: moveWidget
? 15
: MediaQuery.of(context).size.height * 0.70,
child: Text(
'${widget.item.locationName}',
style: TextStyle(fontSize: 30, color: Colors.white),
),
),
],
)),
),
),
),
);
}
}