安装

flutter pub add permission_handler

• 中文官方权限说明

默认的权限状态

//常见的有下面几种状态
/*
denied, //没授权默认是这个，也保不准特殊情况是表示拒绝的，最好是先请求权限后用于判断
granted, //正常使用
restricted, //被操作系统拒绝，例如家长控制等
limited, //被限制了部分功能，适用于部分权限，例如相册的
permanentlyDenied, //这个权限表示永久拒绝，不显示弹窗，用户可以手动调节（也有可能是系统关闭了该权限导致的）
*/

andriod 权限配置permission

• 文件位置【android\app\src\main\AndroidManifest.xml】

<manifest xmlns:android="http://schemas.android.com/apk/res/android">
<uses-permission android:name="android.permission.INTERNET"/>
    <application
        android:label="flutter01"
        android:name="${applicationName}"
        android:icon="@mipmap/ic_launcher">
        <activity
            android:name=".MainActivity"
            android:exported="true"
            android:launchMode="singleTop"
            android:theme="@style/LaunchTheme"
            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
            android:hardwareAccelerated="true"
            android:windowSoftInputMode="adjustResize">
            <!-- Specifies an Android theme to apply to this Activity as soon as
                 the Android process has started. This theme is visible to the user
                 while the Flutter UI initializes. After that, this theme continues
                 to determine the Window background behind the Flutter UI. -->
            <meta-data
              android:name="io.flutter.embedding.android.NormalTheme"
              android:resource="@style/NormalTheme"
              />
            <intent-filter>
                <action android:name="android.intent.action.MAIN"/>
                <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
        </activity>
        <!-- Don't delete the meta-data below.
             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
        <meta-data
            android:name="flutterEmbedding"
            android:value="2" />
    </application>
    <uses-permission android:name="android.permission.CAMERA" />
    <!--相册的读写权限，跟ios端不一样哈，其他的有些也是，根据平台动态调整即可-->
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
</manifest>

测试页面代码 news.dart

• 参考页面

import 'dart:io';

import 'package:flutter/material.dart';
import 'package:permission_handler/permission_handler.dart';

class NewsPage extends StatefulWidget {
  const NewsPage({super.key});

  @override
  State<NewsPage> createState() => _NewsPageState();
}

class _NewsPageState extends State<NewsPage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("新闻"),
      ),
      body: Center(
        child: ListView(
            children: Permission.values
                .where((permission) {
                  if (Platform.isIOS) {
                    return permission != Permission.unknown &&
                        permission != Permission.phone &&
                        permission != Permission.sms &&
                        permission != Permission.ignoreBatteryOptimizations &&
                        permission != Permission.accessMediaLocation &&
                        permission != Permission.activityRecognition &&
                        permission != Permission.manageExternalStorage &&
                        permission != Permission.systemAlertWindow &&
                        permission != Permission.requestInstallPackages &&
                        permission != Permission.accessNotificationPolicy &&
                        permission != Permission.bluetoothScan &&
                        permission != Permission.bluetoothAdvertise &&
                        permission != Permission.bluetoothConnect &&
                        permission != Permission.nearbyWifiDevices &&
                        permission != Permission.videos &&
                        permission != Permission.audio &&
                        permission != Permission.scheduleExactAlarm &&
                        permission != Permission.sensorsAlways;
                  } else {
                    return permission != Permission.unknown &&
                        permission != Permission.mediaLibrary &&
                        permission != Permission.photosAddOnly &&
                        permission != Permission.reminders &&
                        permission != Permission.bluetooth &&
                        permission != Permission.appTrackingTransparency &&
                        permission != Permission.criticalAlerts;
                  }
                })
                .map((permission) => PermissionWidget(permission))
                .toList()),
      ),
    );
  }
}

/// Permission widget containing information about the passed [Permission]
class PermissionWidget extends StatefulWidget {
  /// Constructs a [PermissionWidget] for the supplied [Permission]
  const PermissionWidget(this._permission);

  final Permission _permission;

  @override
  _PermissionState createState() => _PermissionState(_permission);
}

class _PermissionState extends State<PermissionWidget> {
  _PermissionState(this._permission);

  final Permission _permission;
  PermissionStatus _permissionStatus = PermissionStatus.denied;

  @override
  void initState() {
    super.initState();

    _listenForPermissionStatus();
  }

  void _listenForPermissionStatus() async {
    final status = await _permission.status;
    setState(() => _permissionStatus = status);
  }

  Color getPermissionColor() {
    switch (_permissionStatus) {
      case PermissionStatus.denied:
        return Colors.red;
      case PermissionStatus.granted:
        return Colors.green;
      case PermissionStatus.limited:
        return Colors.orange;
      default:
        return Colors.grey;
    }
  }

  @override
  Widget build(BuildContext context) {
    return ListTile(
      title: Text(
        _permission.toString(),
        style: Theme.of(context).textTheme.bodyLarge,
      ),
      subtitle: Text(
        _permissionStatus.toString(),
        style: TextStyle(color: getPermissionColor()),
      ),
      trailing: (_permission is PermissionWithService)
          ? IconButton(
              icon: const Icon(
                Icons.info,
                color: Colors.white,
              ),
              onPressed: () {
                checkServiceStatus(
                    context, _permission as PermissionWithService);
              })
          : null,
      onTap: () {
        requestPermission(_permission);
      },
    );
  }

  void checkServiceStatus(
      BuildContext context, PermissionWithService permission) async {
    ScaffoldMessenger.of(context).showSnackBar(SnackBar(
      content: Text((await permission.serviceStatus).toString()),
    ));
  }

  Future<void> requestPermission(Permission permission) async {
    final status = await permission.request();

    setState(() {
      print(status);
      _permissionStatus = status;
      print(_permissionStatus);
    });
  }
}