add PERMISSION_PHOTOS in CocoaPods build configuration to use Permission.photos correctly on iOS

example/ios/Podfile

@@ -37,5 +37,44 @@ end
 post_install do |installer|
   installer.pods_project.targets.each do |target|
     flutter_additional_ios_build_settings(target)
+    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

example/ios/Podfile.lock

@@ -1,6 +1,6 @@
 PODS:
   - Flutter (1.0.0)
-  - permission_handler_apple (9.1.0):
+  - permission_handler_apple (9.1.1):
     - Flutter
   - photo_gallery (0.0.1):
     - Flutter
@@ -25,10 +25,10 @@ EXTERNAL SOURCES:
 
 SPEC CHECKSUMS:
   Flutter: f04841e97a9d0b0a8025694d0796dd46242b2854
-  permission_handler_apple: 8f116445eff3c0e7c65ad60f5fef5490aa94b4e4
+  permission_handler_apple: e76247795d700c14ea09e3a2d8855d41ee80a2e6
   photo_gallery: 9f95e57747cd22c10676ece3660d1ffe6c603ee5
   video_player_avfoundation: 81e49bb3d9fb63dccf9fa0f6d877dc3ddbeac126
 
-PODFILE CHECKSUM: ef19549a9bc3046e7bb7d2fab4d021637c0c58a3
+PODFILE CHECKSUM: 34ee0d615c11cc61efba04f55f35440fbdc98127
 
 COCOAPODS: 1.12.1