这是我的问题：
我想实现这个设计：
如何将一个与另一个区分开来，首先是homePageTimerUI，然后是countDownTimer？
这是我的代码：homePageTimerUI.dart
class HomePageTimerUI extends StatefulWidget {
const HomePageTimerUI({Key? key}) : super(key: key);
@override
State<HomePageTimerUI> createState() => _HomePageTimerUIState();
}
class _HomePageTimerUIState extends State<HomePageTimerUI> {
@override
Widget build(BuildContext context) {
return SizedBox(
height: double.maxFinite,
width: double.infinity,
child: DefaultTabController(
length: 3,
child: Scaffold(
appBar: AppBar(
elevation: 0,
backgroundColor: Colors.transparent,
bottom: PreferredSize(
preferredSize: const Size.fromHeight(40),
child: Container(
color: Colors.transparent,
child: SafeArea(
child: Column(
children: <Widget>[
TabBar(
indicator: const UnderlineTabIndicator(
borderSide: BorderSide(
color: Color(0xff3B3B3B), width: 4.0),
insets:
EdgeInsets.fromLTRB(12.0, 12.0, 12.0, 11.0)),
indicatorWeight: 15,
indicatorSize: TabBarIndicatorSize.label,
labelColor: const Color(0xff3B3B3B),
labelStyle: const TextStyle(
fontSize: 12,
letterSpacing: 1.3,
fontWeight: FontWeight.w500),
unselectedLabelColor: const Color(0xffD7D7D7),
tabs: const [
Tab(
text: "POMODORO",
icon: Icon(Icons.work_history, size: 40),
),
Tab(
text: "SHORT BREAK",
icon: Icon(Icons.ramen_dining, size: 40),
),
Tab(
text: "LONG BREAK",
icon: Icon(Icons.battery_charging_full_rounded,
size: 40),
),
])
],
),
),
),
),
),
body: TabBarView(
children: const <Widget>[
// Center(
// child: StartPomodoro(),
// ),
// Center(
// child: ShortBreak(),
// ),
// Center(child: LongBreak()),
],
),
),
),
);
}
}countDownTimer.dart
class CountDownTimer extends StatefulWidget {
@override
_CountDownTimerState createState() => _CountDownTimerState();
}
class _CountDownTimerState extends State<CountDownTimer>
with TickerProviderStateMixin {
late 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: 5),
);
}
@override
Widget build(BuildContext context) {
ThemeData themeData = Theme.of(context);
return Scaffold(
backgroundColor: Colors.white10,
body: AnimatedBuilder(
animation: controller,
builder: (context, child) {
return Stack(
children: <Widget>[
Align(
alignment: Alignment.bottomCenter,
child: Container(
color: Colors.amber,
height:
controller.value * MediaQuery.of(context).size.height,
),
),
Padding(
padding: EdgeInsets.all(8.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Expanded(
child: Align(
alignment: FractionalOffset.center,
child: Stack(
children: <Widget>[
CustomPaint(
painter: CustomTimerPainter(
animation: controller,
backgroundColor: Colors.white,
color: themeData.indicatorColor,
)),
Align(
alignment: FractionalOffset.center,
child: Column(
mainAxisAlignment:
MainAxisAlignment.spaceEvenly,
crossAxisAlignment:
CrossAxisAlignment.center,
children: <Widget>[
Text(
timerString,
style: TextStyle(
fontSize: 112.0,
color: Colors.white),
),
],
),
),
],
),
),
),
Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
AnimatedBuilder(
animation: controller,
builder: (context, child) {
return FloatingActionButton.extended(
onPressed: () {
if (controller.isAnimating)
controller.stop();
else {
controller.reverse(
from: controller.value == 0.0
? 1.0
: controller.value);
}
},
icon: Icon(controller.isAnimating
? Icons.pause
: Icons.play_arrow),
label: Text(
controller.isAnimating ? "Pause" : "Play"));
}),
],
),
],
),
),
],
);
}),
);
}
}
class CustomTimerPainter extends CustomPainter {
CustomTimerPainter({
required this.animation,
required this.backgroundColor,
required 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 = 10.0
..strokeCap = StrokeCap.butt
..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(CustomTimerPainter old) {
return animation.value != old.animation.value ||
color != old.color ||
backgroundColor != old.backgroundColor;
}
}这是我自己解决问题的尝试，但没有成功
class StackedPages extends StatelessWidget {
const StackedPages({super.key});
@override
Widget build(BuildContext context) {
return Column(
children: [
HomePageTimerUI(),
CountDownTimer(),
],
);
}
}怎样才能实现这个设计呢？
谢谢你能提供的任何帮助
2条答案
按热度按时间k2arahey1#
你是在请求Stack（）小部件吗？你想用一个替换另一个吗？你可以使用AnimatedSwitcher（）。
其中，MyWidget（）被分配给你想要通过SetState（）显示的小部件，小部件之间的切换带有一个漂亮的动画。
如果您需要将一个Widget在垂直轴上上下放置，您应该尝试删除scaffold和带有infity值的SizedBox。
chhkpiq42#
如果这个类不能堆叠。只是使用
static类型。将这些代码添加到与CountDownTimer相同的文件中。然后，您必须导入该文件并通过该参数调用该小部件。示例
但是你不需要使用
StackPages，只要把countDownTimer放在你的页面里就行了。