51 lines
1.2 KiB
Dart
51 lines
1.2 KiB
Dart
import 'package:flutter/widgets.dart';
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class Loading extends StatefulWidget {
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final double width;
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final double height;
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const Loading({Key? key, this.width = 14, this.height = 14})
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: super(key: key);
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@override
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State<StatefulWidget> createState() => _LoadingState();
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}
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class _LoadingState extends State<Loading> with TickerProviderStateMixin {
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late AnimationController _animationController;
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@override
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initState() {
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// 初始化旋转动画
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_animationController =
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AnimationController(duration: const Duration(seconds: 1), vsync: this);
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_animationController.forward();
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_animationController.addStatusListener((status) {
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if (status == AnimationStatus.completed) {
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_animationController.reset();
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_animationController.forward();
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}
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});
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super.initState();
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}
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@override
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void dispose() {
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_animationController.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 RotationTransition(
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turns: Tween(begin: .0, end: .9).animate(_animationController),
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child: Image.asset(
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"images/message_sending.png",
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package: 'tencent_cloud_chat_uikit',
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height: widget.width,
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width: widget.height,
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),
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);
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}
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}
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