探索 Flutter 精彩世界:从零构建引导屏设计
import 'package:flutter/material.dart';
class OnboardingScreen extends StatefulWidget {
@override
_OnboardingScreenState createState() => _OnboardingScreenState();
}
class _OnboardingScreenState extends State<OnboardingScreen> {
final PageController _pageController = PageController(initialPage: 0);
List<Widget> _buildPageList() {
return [
Image.asset('assets/onboarding1.jpg', fit: BoxFit.cover),
Image.asset('assets/onboarding2.jpg', fit: BoxFit.cover),
Image.asset('assets/onboarding3.jpg', fit: BoxFit.cover),
];
}
@override
Widget build(BuildContext context) {
return Scaffold(
body: Stack(
children: <Widget>[
PageView.builder(
itemCount: _buildPageList().length,
itemBuilder: (context, index) {
return _buildPageList()[index];
},
controller: _pageController,
),
// 其他控件和布局...
],
),
);
}
}
这个代码实例展示了如何使用PageView小部件来创建引导屏。它使用了Stack小部件来叠加其他控件(如指示器或按钮),并且使用PageController来处理页面之间的切换。这个例子简洁明了,并且教会了如何在Flutter中实现类似的设计。
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