69 lines
1.8 KiB
Dart
69 lines
1.8 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:novyronst/root/lib_export.dart';
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class NyLoadingWidget extends StatefulWidget {
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final double size;
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const NyLoadingWidget({
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super.key,
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this.size = 10,
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});
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@override
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State<NyLoadingWidget> createState() => _ThreeDotLoadingState();
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}
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class _ThreeDotLoadingState extends State<NyLoadingWidget>
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with SingleTickerProviderStateMixin {
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late AnimationController _controller;
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int _currentIndex = 0;
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@override
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void initState() {
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super.initState();
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_controller = AnimationController(
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vsync: this,
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duration: const Duration(milliseconds: 600),
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)..addListener(() {
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// 每完成一次动画循环，更新索引
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if (_controller.isCompleted) {
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_controller.reset();
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setState(() {
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_currentIndex = (_currentIndex + 1) % 3;
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});
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_controller.forward();
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}
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});
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_controller.forward();
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}
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@override
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void dispose() {
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_controller.dispose();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return SizedBox(
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width: AppScreen.screenWidth,
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child: Row(
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mainAxisSize: MainAxisSize.min,
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mainAxisAlignment: MainAxisAlignment.center,
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children: List.generate(3, (index) {
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final isDark = index == _currentIndex;
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return AnimatedContainer(
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duration: const Duration(milliseconds: 200),
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margin: const EdgeInsets.symmetric(horizontal: 6),
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width: widget.size,
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height: widget.size,
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decoration: BoxDecoration(
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shape: BoxShape.circle,
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color: isDark ? ConstColor.withValue('#89F011') : ConstColor.withValue('#E2FFC0'),
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),
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);
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}),
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),
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);
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}
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} |