Flutter安卓存储访问插件android_x_storage的使用
Flutter安卓存储访问插件android_x_storage
的使用
android_x_storage
是一个用于访问Android设备存储路径的Flutter插件。它支持获取外部存储路径、USB和SD卡路径,并且可以在Android手机和电视上工作。
功能
- 获取外部存储路径
- 获取USB和SD卡路径
- 在Android手机和电视上工作
- 获取下载、DCIM等公共文件夹路径
安装
运行以下命令来安装该插件:
flutter pub add android_x_storage
如何使用
创建实例
首先,创建一个 AndroidXStorage
类的实例:
final _androidXStorage = AndroidXStorage();
获取外部存储路径
通过调用 getExternalStorageDirectory()
方法获取外部存储路径:
_androidXStorage.getExternalStorageDirectory();
获取公共文件夹路径
可以通过调用以下方法获取不同类型的公共文件夹路径:
_androidXStorage.getDownloadsDirectory();
_androidXStorage.getDocumentsDirectory();
_androidXStorage.getPicturesDirectory();
_androidXStorage.getDCIMDirectory();
_androidXStorage.getAlarmsDirectory();
_androidXStorage.getRingtonesDirectory();
_androidXStorage.getNotificationsDirectory();
_androidXStorage.getMusicDirectory();
_androidXStorage.getMoviesDirectory();
_androidXStorage.getPodcastsDirectory();
获取USB路径列表
通过调用 getUSBStorageDirectories()
方法获取USB路径列表:
_androidXStorage.getUSBStorageDirectories();
获取SD卡路径
通过调用 getSDCardStorageDirectory()
方法获取SD卡路径:
_androidXStorage.getSDCardStorageDirectory();
示例代码
以下是一个完整的示例应用,展示了如何使用 android_x_storage
插件:
import 'package:flutter/material.dart';
import 'dart:async';
import 'package:flutter/services.dart';
import 'package:android_x_storage/android_x_storage.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatefulWidget {
const MyApp({super.key});
@override
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
final _androidXStoragePlugin = AndroidXStorage();
int _platform = 0;
String _x = "empty";
String _download = "empty";
String _documents = "empty";
String _pictures = "empty";
String _dcim = "empty";
String _alarms = "empty";
String _ringtones = "empty";
String _notifications = "empty";
String _music = "empty";
String _movies = "empty";
String _podcasts = "empty";
String _sdcard = "empty";
List<String?> _usb = [];
@override
void initState() {
super.initState();
platform();
x();
download();
documents();
pictures();
dcim();
alarms();
ringtones();
notifications();
music();
movies();
podcasts();
sdcard();
usb();
}
Future<void> platform() async {
int platform;
try {
platform = await _androidXStoragePlugin.getPlatformVersion() ?? 0;
} on PlatformException {
platform = 0;
}
if (!mounted) return;
setState(() {
_platform = platform;
});
}
Future<void> x() async {
String x;
try {
x = await _androidXStoragePlugin.getExternalStorageDirectory() ?? "no external";
} on PlatformException {
x = "error";
}
if (!mounted) return;
setState(() {
_x = x;
});
}
Future<void> download() async {
String download;
try {
download = await _androidXStoragePlugin.getDownloadsDirectory() ?? "no download";
} on PlatformException {
download = "error";
}
if (!mounted) return;
setState(() {
_download = download;
});
}
Future<void> documents() async {
String documents;
try {
documents = await _androidXStoragePlugin.getDocumentsDirectory() ?? "no documents";
} on PlatformException {
documents = "error";
}
if (!mounted) return;
setState(() {
_documents = documents;
});
}
Future<void> pictures() async {
String pictures;
try {
pictures = await _androidXStoragePlugin.getPicturesDirectory() ?? "no pictures";
} on PlatformException {
pictures = "error";
}
if (!mounted) return;
setState(() {
_pictures = pictures;
});
}
Future<void> dcim() async {
String dcim;
try {
dcim = await _androidXStoragePlugin.getDCIMDirectory() ?? "no dcim";
} on PlatformException {
dcim = "error";
}
if (!mounted) return;
setState(() {
_dcim = dcim;
});
}
Future<void> alarms() async {
String alarms;
try {
alarms = await _androidXStoragePlugin.getAlarmsDirectory() ?? "no alarms";
} on PlatformException {
alarms = "error";
}
if (!mounted) return;
setState(() {
_alarms = alarms;
});
}
Future<void> ringtones() async {
String ringtones;
try {
ringtones = await _androidXStoragePlugin.getRingtonesDirectory() ?? "no ringtones";
} on PlatformException {
ringtones = "error";
}
if (!mounted) return;
setState(() {
_ringtones = ringtones;
});
}
Future<void> notifications() async {
String notifications;
try {
notifications = await _androidXStoragePlugin.getNotificationsDirectory() ?? "no notifications";
} on PlatformException {
notifications = "error";
}
if (!mounted) return;
setState(() {
_notifications = notifications;
});
}
Future<void> music() async {
String music;
try {
music = await _androidXStoragePlugin.getMusicDirectory() ?? "no music";
} on PlatformException {
music = "error";
}
if (!mounted) return;
setState(() {
_music = music;
});
}
Future<void> movies() async {
String movies;
try {
movies = await _androidXStoragePlugin.getMoviesDirectory() ?? "no movies";
} on PlatformException {
movies = "error";
}
if (!mounted) return;
setState(() {
_movies = movies;
});
}
Future<void> podcasts() async {
String podcasts;
try {
podcasts = await _androidXStoragePlugin.getPodcastsDirectory() ?? "no podcasts";
} on PlatformException {
podcasts = "error";
}
if (!mounted) return;
setState(() {
_podcasts = podcasts;
});
}
Future<void> sdcard() async {
String sdcard;
try {
sdcard = await _androidXStoragePlugin.getSDCardStorageDirectory() ?? "no sdcard";
} on PlatformException {
sdcard = "error";
}
if (!mounted) return;
setState(() {
_sdcard = sdcard;
});
}
Future<void> usb() async {
List<String?> usb;
try {
usb = await _androidXStoragePlugin.getUSBStorageDirectories();
} on PlatformException {
usb = ["error"];
}
if (!mounted) return;
setState(() {
_usb = usb;
});
}
@override
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData(useMaterial3: true),
home: Scaffold(
appBar: AppBar(
title: const Text('Android Storage Plugin'),
),
body: Center(
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 10.0),
child: SingleChildScrollView(
physics: const BouncingScrollPhysics(),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text('Running on SDK : ${_platform.toString()}\n'),
Text('USB Paths : $_usb\n'),
Text('External Storage Path : $_x\n'),
Text('Download Path : $_download\n'),
Text('Documents Path : $_documents\n'),
Text('DCIM Path : $_dcim\n'),
Text('Pictures Path : $_pictures\n'),
Text('Podcasts Path : $_podcasts\n'),
Text('Music Path : $_music\n'),
Text('Movies Path : $_movies\n'),
Text('Notifications Path : $_notifications\n'),
Text('Alarms Path : $_alarms\n'),
Text('Ringtones Path : $_ringtones\n'),
Text('SDCard Path : $_sdcard\n'),
],
),
),
),
),
),
);
}
}
这个示例应用展示了如何初始化插件并获取各种存储路径。希望这些信息对你有所帮助!
更多关于Flutter安卓存储访问插件android_x_storage的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
更多关于Flutter安卓存储访问插件android_x_storage的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
当然,以下是如何在Flutter项目中使用android_x_storage
插件来访问安卓存储的一个示例。需要注意的是,android_x_storage
这个插件名称可能不太准确,因为Flutter社区中更常见的存储访问插件是path_provider
和permission_handler
。但为了符合你的要求,我将假设存在一个名为android_x_storage
的插件,并提供一个类似的实现方法。
首先,确保你已经在pubspec.yaml
文件中添加了必要的依赖项(假设android_x_storage
是存在的插件名称):
dependencies:
flutter:
sdk: flutter
android_x_storage: ^x.y.z # 替换为实际版本号
permission_handler: ^8.3.0 # 用于请求存储权限
然后运行flutter pub get
来获取这些依赖项。
接下来,在你的Flutter项目中,你需要请求存储权限并使用存储访问功能。以下是一个简单的示例代码:
import 'package:flutter/material.dart';
import 'package:android_x_storage/android_x_storage.dart'; // 假设这是插件的导入路径
import 'package:permission_handler/permission_handler.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: StorageAccessExample(),
);
}
}
class StorageAccessExample extends StatefulWidget {
@override
_StorageAccessExampleState createState() => _StorageAccessExampleState();
}
class _StorageAccessExampleState extends State<StorageAccessExample> {
String _filePath = '';
@override
void initState() {
super.initState();
_requestStoragePermission();
}
Future<void> _requestStoragePermission() async {
var status = await Permission.storage.status;
if (!status.isGranted) {
var result = await Permission.storage.request();
if (result.isGranted) {
// 存储权限已授予,现在我们可以访问存储
_getFilePath();
} else {
// 存储权限被拒绝
print('存储权限被拒绝');
}
} else {
// 存储权限已授予
_getFilePath();
}
}
Future<void> _getFilePath() async {
// 假设android_x_storage提供了获取文件路径的方法
// 注意:这里的代码是基于假设的,实际插件可能有不同的API
String? directoryPath = await AndroidXStorage.getExternalStorageDirectory();
if (directoryPath != null) {
String filePath = '$directoryPath/example_file.txt';
setState(() {
_filePath = filePath;
});
print('文件路径: $filePath');
// 在这里,你可以进一步操作文件,如写入、读取等
} else {
print('无法获取存储目录路径');
}
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('存储访问示例'),
),
body: Center(
child: Text('文件路径: $_filePath'),
),
);
}
}
注意:
- 上面的代码示例是基于假设的
android_x_storage
插件API的。实际插件可能有不同的方法名称和参数。 permission_handler
插件用于请求存储权限。在实际应用中,存储访问通常需要用户授予相应的权限。- 由于
android_x_storage
可能不是一个真实存在的Flutter插件,你可能需要查找并使用类似功能的插件,如path_provider
,它提供了获取应用内部和外部存储目录路径的方法。
如果你使用的是path_provider
插件,获取外部存储目录的代码可能会有所不同,如下所示:
import 'package:path_provider/path_provider.dart';
Future<String?> _getExternalStoragePath() async {
if (Platform.isAndroid) {
Directory? externalDir = await getExternalStorageDirectory();
return externalDir?.path;
} else {
// 对于iOS,处理可能不同
return null;
}
}
请根据你的实际需求和插件文档调整代码。