119 lines
2.4 KiB
Dart
119 lines
2.4 KiB
Dart
import 'package:flutter/material.dart';
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import '../common/app_colors.dart';
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import '../common/assets.dart';
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class SplashPage extends StatefulWidget {
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const SplashPage({Key? key}) : super(key: key);
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@override
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State<SplashPage> createState() => _SplashPageState();
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}
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class _SplashPageState extends State<SplashPage> {
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//计数变量
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final duration = 10;
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int number = 0;
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//倒计时函数
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Future<void> _countdown() async {
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number = duration;
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for (var i = 0; i < duration; i++) {
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await Future.delayed(const Duration(seconds: 1), () {
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// 除非 [mounted] 为 true，否则调用 [setState] 是错误的。
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if (mounted == true) {
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setState(() {
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number--;
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});
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}
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});
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}
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if (number == 0) {
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print('倒计时结束 ');
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}
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}
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@override
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void initState() {
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super.initState();
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_countdown();
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}
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//logo
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Widget _buildLogo() {
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return Stack(
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alignment: Alignment.center,
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children: [
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//底部白色背景
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Container(
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// color: Colors.white,
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width: 120,
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height: 120,
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decoration: BoxDecoration(
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color: Colors.white,
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borderRadius: BorderRadius.circular(48),
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),
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),
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//上层图片
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Image.asset(
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AssetsImages.logoPng,
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width: 84,
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height: 80,
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)
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],
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);
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}
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//text方法抽出
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Text _bulidText(String text) {
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return Text(
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text,
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style: const TextStyle(
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fontSize: 19,
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// fontFamily: 'Poppins',
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fontWeight: FontWeight.bold,
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color: Colors.white,
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height: 22 / 19,
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),
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);
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}
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//主视图 拆成函数
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Widget _buildView(BuildContext context) {
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return Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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//logo
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_buildLogo(),
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const SizedBox(
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height: 24,
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),
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//标题
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_bulidText('Online Market'),
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const SizedBox(
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height: 24,
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),
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//计数器
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_bulidText(number > 0 ? '$number' : 'done'),
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//end
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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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return Scaffold(
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body: _buildView(context),
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backgroundColor: AppColors.backgroundSplash,
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);
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}
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}
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