Flutter全屏图片展示插件custom_full_image_screen的使用
Flutter全屏图片展示插件custom_full_image_screen的使用
full_screen_image
包是一个新的 Flutter 包,用于实现全屏图片功能。
开始使用
你是否尝试过将图片设置为全屏?别担心,我们在这里帮助你。我们带来了一个新的库,简单易用,可扩展性强且易于集成。
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完整示例代码
以下是使用 custom_full_image_screen
插件的完整示例代码:
import 'dart:io';
import 'package:custom_full_image_screen/custom_full_image_screen.dart';
import 'package:flutter/material.dart';
// 自定义 HTTP 覆盖类,处理 HTTPS 证书问题
class MyHttpOverrides extends HttpOverrides {
[@override](/user/override)
HttpClient createHttpClient(SecurityContext? context) {
return super.createHttpClient(context)
..badCertificateCallback =
(X509Certificate cert, String host, int port) => true;
}
}
void main() {
HttpOverrides.global = new MyHttpOverrides();
runApp(MyApp());
}
class MyApp extends StatelessWidget {
// 这个小部件是你的应用的根
[@override](/user/override)
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(title: '全屏图片示例'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key? key, this.title}) : super(key: key);
final String? title;
[@override](/user/override)
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
[@override](/user/override)
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title!),
),
body: Center(
child: SingleChildScrollView(
child: Container(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
SizedBox(
height: 20,
),
Text(
'图片资源弹出框',
style: TextStyle(color: Colors.blue, fontSize: 18),
),
// 使用 ImageAssetsFullscreen 显示本地图片
ImageAssetsFullscreen(
imagePath: 'assets/default_image.png',
imageBorderRadius: 200,
imageWidth: 200,
imageHeight: 200,
iconBackButtonColor: Colors.red,
imageDetailsHeight: 500,
imageDetailsWidth: 200,
hideBackButtonDetails: true,
appBarBackgroundColorDetails: Colors.red,
backgroundColorDetails: Colors.green,
imageDetailsFit: BoxFit.cover,
hideAppBarDetails: true,
imageFit: BoxFit.fill,
withHeroAnimation: true,
),
Divider(
height: 25,
),
Text(
'网络图片弹出框',
style: TextStyle(color: Colors.blue, fontSize: 18),
),
// 使用 ImageNetworkFullscreen 显示网络图片
ImageNetworkFullscreen(
imageUrl: 'https://picsum.photos/id/1/200/300',
imageBorderRadius: 20,
imageWidth: 200,
imageHeight: 200,
),
Divider(
height: 25,
),
Text(
'缓存图片弹出框',
style: TextStyle(color: Colors.blue, fontSize: 18),
),
// 使用 ImageCachedFullscreen 显示缓存图片
ImageCachedFullscreen(
imageUrl: 'https://picsum.photos/200/300',
imageBorderRadius: 20,
imageWidth: 200,
imageHeight: 200,
withHeroAnimation: true,
placeholder: Container(
child: Icon(Icons.check),
),
errorWidget: Container(
child: Icon(Icons.error),
),
placeholderDetails: Container(),
),
Divider(
height: 25,
),
Text(
'带有自定义选项的缓存图片弹出框',
style: TextStyle(color: Colors.blue, fontSize: 18),
),
// 使用 ImageCachedFullscreen 显示带有自定义选项的缓存图片
ImageCachedFullscreen(
imageUrl: 'https://picsum.photos/id/15/400/600',
imageBorderRadius: 20,
imageWidth: 200,
imageHeight: 200,
placeholder: Container(
child: Icon(Icons.check),
),
errorWidget: Container(
child: Icon(
Icons.error,
size: 68,
color: Colors.red,
),
),
iconBackButtonColor: Colors.red,
imageDetailsHeight: 500,
imageDetailsWidth: 200,
hideBackButtonDetails: true,
appBarBackgroundColorDetails: Colors.red,
backgroundColorDetails: Colors.cyan,
imageDetailsFit: BoxFit.cover,
hideAppBarDetails: true,
imageFit: BoxFit.fill,
withHeroAnimation: true,
placeholderDetails: Center(child: CircularProgressIndicator()),
),
SizedBox(
height: 20,
),
],
),
),
),
),
);
}
}
更多关于Flutter全屏图片展示插件custom_full_image_screen的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
更多关于Flutter全屏图片展示插件custom_full_image_screen的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
当然,以下是如何在Flutter项目中使用custom_full_image_screen
插件来实现全屏图片展示的示例代码。首先,你需要确保你的Flutter项目中已经添加了这个插件。如果还没有添加,可以在你的pubspec.yaml
文件中添加以下依赖:
dependencies:
flutter:
sdk: flutter
custom_full_image_screen: ^最新版本号 # 替换为实际的最新版本号
然后运行flutter pub get
来安装依赖。
接下来,你可以在你的Flutter应用中实现全屏图片展示。以下是一个简单的示例代码:
main.dart
import 'package:flutter/material.dart';
import 'package:custom_full_image_screen/custom_full_image_screen.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
final List<String> imageUrls = [
'https://example.com/image1.jpg',
'https://example.com/image2.jpg',
'https://example.com/image3.jpg',
// 添加更多图片URL
];
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('全屏图片展示示例'),
),
body: GridView.builder(
gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 2,
crossAxisSpacing: 4.0,
mainAxisSpacing: 4.0,
),
itemCount: imageUrls.length,
itemBuilder: (context, index) {
return GestureDetector(
onTap: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => CustomFullImageScreen(
imageUrl: imageUrls[index],
// 可选参数:设置全屏图片展示的标题
title: '图片 ${index + 1}',
),
),
);
},
child: Image.network(
imageUrls[index],
fit: BoxFit.cover,
),
);
},
),
);
}
}
custom_full_image_screen.dart(插件实现示例,如果插件已经实现,则不需要此文件)
注意:通常情况下,你不需要自己实现插件,因为custom_full_image_screen
插件应该已经包含了全屏图片展示的功能。但如果你有兴趣了解如何自己实现一个类似的功能,这里是一个基本的框架:
import 'package:flutter/material.dart';
class CustomFullImageScreen extends StatelessWidget {
final String imageUrl;
final String? title;
CustomFullImageScreen({required this.imageUrl, this.title});
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(title ?? '全屏图片'),
actions: <Widget>[
IconButton(
icon: Icon(Icons.close),
onPressed: () => Navigator.pop(context),
),
],
),
body: Center(
child: Image.network(
imageUrl,
fit: BoxFit.cover,
loadingBuilder: (context, widget, loadingProgress) {
if (loadingProgress == null) return widget;
return CircularProgressIndicator(
value: loadingProgress.expectedTotalBytes != null
? loadingProgress.cumulativeBytesLoaded.toDouble() /
loadingProgress.expectedTotalBytes!.toDouble()
: null,
);
},
),
),
);
}
}
然而,在大多数情况下,你只需要使用插件提供的CustomFullImageScreen
组件,并传入相应的图片URL即可,如上面的main.dart
示例所示。
确保你替换了示例中的图片URL为实际可用的图片URL,并运行你的Flutter应用以查看效果。