20.2 设备动态权限查询

20.2 设备动态权限查询

img img

实现步骤：

第 1 步：安装插件 permission_handler

pubspec.yaml

1
2
3
dependencies:
	# permission 权限
  permission_handler: 9.2.0

第 2 步：ios

ios/Podfile

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
...

post_install do |installer|
  installer.pods_project.targets.each do |target|
    flutter_additional_ios_build_settings(target)

    #########################################################################
    ## permissions

    target.build_configurations.each do |config|
      # Here are some configurations automatically generated by flutter

      # You can enable the permissions needed here. For example to enable camera
      # permission, just remove the `#` character in front so it looks like this:
      #
      # ## dart: PermissionGroup.camera
      # 'PERMISSION_CAMERA=1'
      #
      #  Preprocessor definitions can be found in: https://github.com/Baseflow/flutter-permission-handler/blob/master/permission_handler/ios/Classes/PermissionHandlerEnums.h
      config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
        '$(inherited)',

        ## dart: PermissionGroup.calendar
        # 'PERMISSION_EVENTS=1',

        ## dart: PermissionGroup.reminders
        # 'PERMISSION_REMINDERS=1',

        ## dart: PermissionGroup.contacts
        # 'PERMISSION_CONTACTS=1',

        # dart: PermissionGroup.camera
        'PERMISSION_CAMERA=1',

        ## dart: PermissionGroup.microphone
        # 'PERMISSION_MICROPHONE=1',

        ## dart: PermissionGroup.speech
        # 'PERMISSION_SPEECH_RECOGNIZER=1',

        # dart: PermissionGroup.photos
        'PERMISSION_PHOTOS=1',

        ## dart: [PermissionGroup.location, PermissionGroup.locationAlways, PermissionGroup.locationWhenInUse]
        # 'PERMISSION_LOCATION=1',

        ## dart: PermissionGroup.notification
        # 'PERMISSION_NOTIFICATIONS=1',

        ## dart: PermissionGroup.mediaLibrary
        # 'PERMISSION_MEDIA_LIBRARY=1',

        ## dart: PermissionGroup.sensors
        # 'PERMISSION_SENSORS=1',

        ## dart: PermissionGroup.bluetooth
        # 'PERMISSION_BLUETOOTH=1',

        ## dart: PermissionGroup.appTrackingTransparency
        # 'PERMISSION_APP_TRACKING_TRANSPARENCY=1',

        ## dart: PermissionGroup.criticalAlerts
        # 'PERMISSION_CRITICAL_ALERTS=1'
      ]

    end
    #########################################################################

  end
end

在需要的权限前去掉注释

ios/Runner/Info.plist

1
2
3
4
5
6
<key>NSCameraUsageDescription</key>
<string>Need to access the camera to take photos and videos to share with friends.</string>
<key>NSMicrophoneUsageDescription</key>
<string>Requires access to the microphone to shoot video and voice to share with friends.</string>
<key>NSPhotoLibraryUsageDescription</key>
<string>Requires access to the photo library to read videos and photos to share with friends.</string>

NSCameraUsageDescription 启用相机说明
NSMicrophoneUsageDescription 启用麦克风说明
NSPhotoLibraryUsageDescription 启用相册说明

第 3 步：android

android/app/build.gradle

1
2
3
4
5
6
7
8
9
10
11
12
13
14
android {
    // compileSdkVersion flutter.compileSdkVersion
    compileSdkVersion 31

    ...

    defaultConfig {
        ...

        minSdkVersion 21
        targetSdkVersion 30

        ...
    }

compileSdkVersion 编译 sdk 版本
minSdkVersion 最小的 sdk 版本
targetSdkVersion 目标机器的 sdk 版本，关系到设备特性的开启

android/app/src/main/AndroidManifest.xml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
<manifest>
<application></application>

	<!--
    Internet permissions do not affect the `permission_handler` plugin, but are required if your app needs access to
    the internet.
    -->
    <uses-permission android:name="android.permission.INTERNET"/>

    <!-- Permissions options for the `storage` group -->
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

    <!-- Permissions options for the `camera` group -->
    <uses-permission android:name="android.permission.CAMERA"/>
    <uses-permission android:name="android.permission.ACCESS_MEDIA_LOCATION"/>

    <!-- Permissions options for the `microphone` or `speech` group -->
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
</manifest>

第 4 步：动态授权 Privilege

lib/common/utils/privilege.dart

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
import 'package:get/get_utils/src/platform/platform.dart';
import 'package:permission_handler/permission_handler.dart';

import 'index.dart';

/// 授权返回
class PrivilegeStatus {
  final bool result;
  final String message;

  PrivilegeStatus({required this.result, required this.message});
}

/// 动态授权
class Privilege {
  /// 是否有相册权限
  static Future<PrivilegeStatus> photos() async {
    var value = false;
    if (GetPlatform.isIOS) {
      var statuses = await [Permission.photos].request();
      value = statuses[Permission.photos] == PermissionStatus.granted;
    }
    if (GetPlatform.isAndroid) {
      var statuses = await [Permission.storage].request();
      value = statuses[Permission.storage] == PermissionStatus.granted;
    }
    return PrivilegeStatus(
      result: value,
      message: value ? 'ok' : 'Please open photo gallery access',
    );
  }

  /// 是否有相机权限
  static Future<PrivilegeStatus> camera() async {
    var value = false;
    var permissions = <Permission>[];
    permissions.addAll([Permission.camera, Permission.microphone]);
    if (GetPlatform.isIOS) {
      permissions.add(Permission.photos);
    }
    if (GetPlatform.isAndroid) {
      permissions.add(Permission.storage);
    }
    var statuses = await permissions.request();
    value = statuses[Permission.camera] == PermissionStatus.granted &&
        statuses[Permission.microphone] == PermissionStatus.granted;
    if (GetPlatform.isIOS) {
      value = statuses[Permission.photos] == PermissionStatus.granted;
    }
    if (GetPlatform.isAndroid) {
      value = statuses[Permission.storage] == PermissionStatus.granted;
    }
    return PrivilegeStatus(
      result: value,
      message: value ? 'ok' : 'Please turn on camera and microphone access',
    );
  }

  /// 是否有麦克风权限
  static Future<PrivilegeStatus> microphone() async {
    var value = false;
    var statuses = await [Permission.microphone].request();
    value = statuses[Permission.microphone] == PermissionStatus.granted;
    return PrivilegeStatus(
      result: value,
      message: value ? 'ok' : 'Please turn on microphone access',
    );
  }

  /// 是否有存储权限
  static Future<bool> storage() async {
    bool value = false;
    String text = '';
    if (GetPlatform.isAndroid) {
      value = await Permission.storage.request().isGranted;
      text =
          'Please allow access to storage space, settings will be opened soon';
    }
    if (GetPlatform.isIOS) value = true;
    if (!value) {
      Loading.toast(text);
      await Future.delayed(const Duration(seconds: 2));
      openSettings();
    }
    return value;
  }

  /// 打开系统设置
  static Future<bool> openSettings() async {
    return await openAppSettings();
  }
}

提交代码到 git