flutter开发iOS的蓝牙权限配置

即使蓝牙授权了还是出现.denied状态问题 

除了配置

<key>NSBluetoothAlwaysUsageDescription</key>

<string>我们需要您的同意来访问蓝牙</string>

<key>NSBluetoothPeripheralUsageDescription</key>

<string>我们需要您的同意来访问蓝牙</string>

还得在PodFlie文件加上

  target.build_configurations.eachdo |config|

         config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [

           '$(inherited)',

           # dart: [PermissionGroup. location, PermissionGroup. locationAlways, PermissionGroup. locationWhenInUse]

           'PERMISSION_LOCATION=1',

           ## dart: PermissionGroup.bluetooth

           'PERMISSION_BLUETOOTH=1',

         ]

       end

蓝牙 var status = await Permission.bluetooth.status;

才不会总是.denied的状态，就会出现.granted的授权状态