我正在使用Tensor编程中的动画计时器。可以在这里找到：https://github.com/tensor-programming/flutter_timer_example。
我已经在程序的另一页上（而不是动画计时器所在的位置）实现了TextField小部件。我的问题是如何在{{ 1}}属性是否与动画计时器中的TextField的值使用onSubmitted相同？动画计时器已经在使用TextEditingController，如何将Duration集成到实现计时器的AnimationController类中？为了将文本字段的输入值传递到TextEditingController的持续时间值中。
谢谢！任何帮助将不胜感激。这是我的Github存储库，供您进一步参考：https://github.com/dscognitif/Sati_App。
这是动画计时器窗口小部件的源代码：
FirstPage这是timerString的源代码，它位于另一个dart文件和应用程序的另一个页面中：
import 'package:flutter/material.dart';
import 'dart:math' as math;
class FirstPage extends StatefulWidget {
@override
FirstPageState createState() => FirstPageState();
}
class FirstPageState extends State<FirstPage> with TickerProviderStateMixin {
AnimationController controller;
String get timerString {
Duration duration = controller.duration * controller.value;
return '${duration.inMinutes}:${(duration.inSeconds % 60).toString().padLeft(2, '0')}';
}
@override
void initState() {
super.initState();
controller = AnimationController(
vsync: this,
duration: Duration(seconds: 2),
);
}
@override
Widget build(BuildContext context) {
ThemeData themeData = Theme.of(context);
return Scaffold(
body: Padding(
padding: EdgeInsets.all(8.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Expanded(
child: Align(
alignment: FractionalOffset.center,
child: AspectRatio(
aspectRatio: 1.0,
child: Stack(
children: <Widget>[
Positioned.fill(
child: AnimatedBuilder(
animation: controller,
builder: (BuildContext context, Widget child) {
return CustomPaint(
painter: TimerPainter(
animation: controller,
backgroundColor: Colors.white,
color: themeData.indicatorColor,
));
},
),
),
Align(
alignment: FractionalOffset.center,
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Text(
"Count Down",
style: themeData.textTheme.subhead,
),
AnimatedBuilder(
animation: controller,
builder: (BuildContext context, Widget child) {
return Text(
timerString,
style: themeData.textTheme.display4,
);
}),
],
),
),
],
),
),
),
),
Container(
margin: EdgeInsets.all(8.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
FloatingActionButton(
child: AnimatedBuilder(
animation: controller,
builder: (BuildContext context, Widget child) {
return Icon(controller.isAnimating
? Icons.pause
: Icons.play_arrow);
},
),
onPressed: () {
if (controller.isAnimating)
controller.stop();
else {
controller.reverse(
from: controller.value == 0.0
? 1.0
: controller.value);
}
},
)
],
),
)
],
),
),
);
}
}
class TimerPainter extends CustomPainter {
TimerPainter({
this.animation,
this.backgroundColor,
this.color,
}) : super(repaint: animation);
final Animation<double> animation;
final Color backgroundColor, color;
@override
void paint(Canvas canvas, Size size) {
Paint paint = Paint()
..color = backgroundColor
..strokeWidth = 5.0
..strokeCap = StrokeCap.round
..style = PaintingStyle.stroke;
canvas.drawCircle(size.center(Offset.zero), size.width / 2.0, paint);
paint.color = color;
double progress = (1.0 - animation.value) * 2 * math.pi;
canvas.drawArc(Offset.zero & size, math.pi * 1.5, -progress, false, paint);
}
@override
bool shouldRepaint(TimerPainter old) {
return animation.value != old.animation.value ||
color != old.color ||
backgroundColor != old.backgroundColor;
}
}
答案 0 :(得分：0)
您可以将onSubmitted更改为：
struct Profile {
var isDisabled1 = false
var isDisabled2 = false
var isDisabled3 = false
}
class ThreeColCell: UITableViewCell {
@IBOutlet var mainStackView: UIStackView!
@IBOutlet var view1: UIView!
@IBOutlet var view2: UIView!
@IBOutlet var view3: UIView!
var arrayOfRealViews: [UIView] = [UIView]()
var arrayOfBlankViews: [UIView] = [UIView]()
var myProfile: Profile = Profile() {
didSet {
// hide all the views in the stack
mainStackView.arrangedSubviews.forEach {
$0.isHidden = true
}
// I don't know how you have your button/label views set up, but here
// you would set button titles and label texts based on myProfile properties
// create a [1, 2, 3] array based on the .isDisabled# properties of the Profile object
var a = [Int]()
if !myProfile.isDisabled1 {
a.append(1)
}
if !myProfile.isDisabled2 {
a.append(2)
}
if !myProfile.isDisabled3 {
a.append(3)
}
// you now have an array "a" that will be
// [1, 2, 3] or
// [1, 2] or
// [2] or
// [2, 3] etc
// show the specified "real" views (arrays are Zero-based)
a.forEach { i in
arrayOfRealViews[i - 1].isHidden = false
}
// pad stackview to 3 using "blank" view(s)
// if 1 real view, show 2 blank views
// if 2 real views, show 1 blank view
// if 3 real views, don't show any blank views
for i in 0..<(3 - a.count) {
arrayOfBlankViews[i].isHidden = false
}
}
}
override func awakeFromNib() {
super.awakeFromNib()
// ordered array of views 1 to 3
arrayOfRealViews = [view1, view2, view3]
// add 3 "blank" views to the stack view
// and to array of blank views
for _ in 0..<3 {
let v = UIView()
v.translatesAutoresizingMaskIntoConstraints = false
v.backgroundColor = .clear
mainStackView.addArrangedSubview(v)
arrayOfBlankViews.append(v)
}
}
}
class ThreeColTableViewController: UITableViewController {
var profilesArray: [Profile] = [Profile]()
override func viewDidLoad() {
super.viewDidLoad()
// create a few Profiles
// all 3 views are "enabled" by default
var p = Profile()
profilesArray.append(p)
// Profile with views 2 and 3 disabled
p = Profile()
p.isDisabled2 = true
p.isDisabled3 = true
profilesArray.append(p)
// Profile with view 3 disabled
p = Profile()
p.isDisabled3 = true
profilesArray.append(p)
// Profile with view 1 disabled
p = Profile()
p.isDisabled1 = true
profilesArray.append(p)
// Profile with views 1 and 2 disabled
p = Profile()
p.isDisabled1 = true
p.isDisabled2 = true
profilesArray.append(p)
}
override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return profilesArray.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "ThreeColCell", for: indexPath) as! ThreeColCell
cell.myProfile = profilesArray[indexPath.row]
return cell
}
}
然后您可以通过致电：
onSubmitted: (v) => Navigator.pop(context, v),