flutter permission_handler

如果iOS不做处理，会要求在info.plist文件中加入所有权限

解决方法

• 将依赖包拷贝到本地
  https://www.jianshu.com/p/025da9c11e1a
• 修改permission_handler中PermissionHandlerEnums.h文件里面的define，注释不需要的权限的ifndef，如下

//#ifndef PERMISSION_PHOTOS
//    #define PERMISSION_PHOTOS 1
//#endif

另一种方法

# 以下是新增的，permission_handle中动态申请摄像头、麦克风权限
          # 权限列表参考：https://pub.flutter-io.cn/packages/permission_handler
          # "Add the following to your Podfile file" 一节

            # You can remove unused permissions here
            # for more infomation: https://github.com/BaseflowIT/flutter-permission-handler/blob/develop/ios/Classes/PermissionHandlerEnums.h
            # e.g. when you don't need camera permission, just add 'PERMISSION_CAMERA=0'
            config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
              '$(inherited)',
             'PERMISSION_EVENTS=0',
             'PERMISSION_REMINDERS=0',
             'PERMISSION_MICROPHONE=0',
             'PERMISSION_SPEECH_RECOGNIZER=0',
             'PERMISSION_LOCATION=0',
             'PERMISSION_NOTIFICATIONS=0',
             'PERMISSION_MEDIA_LIBRARY=0',
             'PERMISSION_SENSORS=0',
            ]