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bea88f31e0
Signed-off-by: 21pages <pages21@163.com>
66 lines
1.6 KiB
Dart
66 lines
1.6 KiB
Dart
import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:get/get.dart';
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class LoadingDotWidget extends StatefulWidget {
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final int count;
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final double size;
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final int duration;
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LoadingDotWidget(
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{Key? key, required this.size, this.count = 3, this.duration = 200})
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: super(key: key);
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@override
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State<LoadingDotWidget> createState() => _LoadingDotWidgetState();
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}
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class _LoadingDotWidgetState extends State<LoadingDotWidget> {
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int counter = 0;
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Timer? timer;
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@override
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void initState() {
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super.initState();
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startAnimation();
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}
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@override
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void dispose() {
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timer?.cancel();
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super.dispose();
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}
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void startAnimation() {
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timer = Timer.periodic(Duration(milliseconds: widget.duration), (timer) {
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if (mounted) {
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setState(() {
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counter = (counter + 1) % widget.count;
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});
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}
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});
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}
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@override
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Widget build(BuildContext context) {
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getChild(int index) {
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return AnimatedContainer(
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duration: Duration(milliseconds: widget.duration),
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width: counter == index ? widget.size : widget.size / 2,
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height: counter == index ? widget.size : widget.size / 2,
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decoration: BoxDecoration(
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shape: BoxShape.circle,
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color: Colors.grey,
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),
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).marginSymmetric(horizontal: widget.size);
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}
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return Center(
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child: Row(
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mainAxisAlignment: MainAxisAlignment.center,
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children: List.generate(widget.count, (e) => e)
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.map((e) => getChild(e))
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.toList()),
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);
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}
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}
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