颤动 ios 照片权限始终返回永久拒绝的权限

Question

我正在使用flutter为ios和android创建一个应用程序。我需要对ios和android的照片和storagepermission来访问照片以更新用户个人资料图片。我使用permission_handler包请求权限。这在Android系统中效果很好，但在ios中效果不佳。

<key>NSPhotoLibraryUsageDescription</key>
<string>We need Photos access to allow you to update Profile Picture.</string>

var permission = Platform.isAndroid
        ? Permission.storage
        : Permission.photos;

var permissionStatus = await permission.request();

print("isGranted: " +
        permissionStatus.isGranted.toString() +
        " isDenied: " +
        permissionStatus.isDenied.toString() +
        " isLimited: " +
        permissionStatus.isLimited.toString() +
        " isRestricted: " +
        permissionStatus.isRestricted.toString() +
        " isPermanentlyDenied: " +
        permissionStatus.isPermanentlyDenied.toString());

flutter:is granted:false is defined:false is limited:false is restricted:false is permanently denied:true

我试图在模拟器（iPhone 12pro-max）上卸载并重新安装应用程序，但仍然无法请求权限（显示请求弹出窗口）。

我试过这个，这个，这个和这个。但问题依然存在。

Answer 1

使用最新的< code>permission_handler:包。向您的< code>Info.plist文件添加照片权限。

 <!-- Permission options for the `photos` group -->
    <key>NSPhotoLibraryUsageDescription</key>
    <string>photos</string>

将以下内容添加到Podfile文件中:

post_install do |installer|
  installer.pods_project.targets.each do |target|
    ... # Here are some configurations automatically generated by flutter

    # Start of the permission_handler configuration
    target.build_configurations.each do |config|

      # 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_apple/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 of the permission_handler configuration
  end
end

如果您需要添加更多权限。删除您想要使用的权限前面的#字符。例如

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

在flutter中，请求var status = await permission . photos . request()；if (status.isDenied) { //我们尚未请求许可，或者许可之前已被拒绝，但不是永久拒绝。}

终于打扫干净了

Answer 2

首先复制并粘贴下面的代码到你的podfile中。然后设置' PERMISSION_PHOTOS=1 '，如果你不想使用另一个权限，你可以删除或设置它=0 (exp 'PERMISSION_CAMERA=0 '，)。

    post_install do |installer|
  installer.pods_project.targets.each do |target|
    flutter_additional_ios_build_settings(target)
    target.build_configurations.each do |config|
          # You can remove unused permissions here
          # e.g. when you don't need camera permission, just add 'PERMISSION_CAMERA=0'
          config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
            '$(inherited)',
            ## dart: PermissionGroup.calendar

            ## dart: PermissionGroup.reminders

            ## dart: PermissionGroup.contacts

            ## 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]

            ## dart: PermissionGroup.notification

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

            ## dart: PermissionGroup.bluetooth

            ## dart: PermissionGroup.appTrackingTransparency
            'PERMISSION_APP_TRACKING_TRANSPARENCY=1',
            ## dart: PermissionGroup.criticalAlerts
            'PERMISSION_SENSORS=1'
          ]
        end
  end
end

然后将其添加到信息中。plist文件

<key>NSPhotoLibraryUsageDescription</key>
 <string>We need Photos access to allow you to update Profile Picture.</string>

最后，在你的项目中使用permission_handler插件，并在你想要请求许可的地方添加这段代码。

 var permissionStatus = await permission.request();

Answer 3

iOS上权限包的行为已更改为将所有权限默认为拒绝。您必须更新PList并打开您希望在应用程序中使用的权限，它才能工作。