Format Dart code

example/lib/main.dart

@@ -27,14 +27,17 @@ class _MyAppState extends State<MyApp> {
 
     // Platform messages may fail, so we use a try/catch PlatformException.
     try {
-      permissionStatus = await PermissionHandler.checkPermissionStatus(PermissionGroup.calendar);
+      permissionStatus = await PermissionHandler
+          .checkPermissionStatus(PermissionGroup.calendar);
 
-      if(permissionStatus != PermissionStatus.granted){
-        final shouldShowRationale = await PermissionHandler.shouldShowRequestPermissionRationale(PermissionGroup.calendar);
-        
-        if(shouldShowRationale) {
-          var permissions = await PermissionHandler.requestPermissions([PermissionGroup.calendar]);
-          if(permissions.containsKey(PermissionGroup.calendar)) {
+      if (permissionStatus != PermissionStatus.granted) {
+        final shouldShowRationale = await PermissionHandler
+            .shouldShowRequestPermissionRationale(PermissionGroup.calendar);
+
+        if (shouldShowRationale) {
+          var permissions = await PermissionHandler
+              .requestPermissions([PermissionGroup.calendar]);
+          if (permissions.containsKey(PermissionGroup.calendar)) {
             permissionStatus = permissions[PermissionGroup.calendar];
           }
         }
@@ -66,7 +69,8 @@ class _MyAppState extends State<MyApp> {
               new Text('Running on: $_permissionStatus\n'),
               new RaisedButton(
                 child: new Text("Open settings"),
-                onPressed: () async => await PermissionHandler.openAppSettings(),
+                onPressed: () async =>
+                    await PermissionHandler.openAppSettings(),
               ),
             ],
           ),

lib/permission_enums.dart

 /// Defines the state of a permission group
-enum PermissionStatus
-{
-    /// Permission to access the requested feature is denied by the user.
-    denied,
-    /// The feature is disabled (or not available) on the device.
-    disabled,
-    /// Permission to access the requested feature is granted by the user.
-    granted,
-    /// The user granted restricted access to the requested feature (only on iOS).
-    restricted,
-    /// Permission is in an unknown state
-    unknown
+enum PermissionStatus {
+  /// Permission to access the requested feature is denied by the user.
+  denied,
+
+  /// The feature is disabled (or not available) on the device.
+  disabled,
+
+  /// Permission to access the requested feature is granted by the user.
+  granted,
+
+  /// The user granted restricted access to the requested feature (only on iOS).
+  restricted,
+
+  /// Permission is in an unknown state
+  unknown
 }
 
 /// Defines the permission groups for which permissions can be checked or requested.
-enum PermissionGroup
-{
+enum PermissionGroup {
   /// The unknown permission only used for return type, never requested
   unknown,
+
   /// Android: Calendar
   /// iOS: Calendar (Events)
   calendar,
+
   /// Android: Camera
   /// iOS: Photos (Camera Roll and Camera)
   camera,
+
   /// Android: Contacts
   /// iOS: AddressBook
   contacts,
+
   /// Android: Fine and Coarse Location
   /// iOS: CoreLocation (Always and WhenInUse)
   location,
+
   /// Android: Microphone
   /// iOS: Microphone
   microphone,
+
   /// Android: Phone
   /// iOS: Nothing
   phone,
+
   /// Android: Nothing
   /// iOS: Photos
   photos,
+
   /// Android: Nothing
   /// iOS: Reminders
   reminders,
+
   /// Android: Body Sensors
   /// iOS: CoreMotion
   sensors,
+
   /// Android: Sms
   /// iOS: Nothing
   sms,
+
   /// Android: External Storage
   /// iOS: Nothing
   storage,
+
   /// Android: Microphone
   /// iOS: Speech
   speech,
+
   /// Android: Fine and Coarse Location
   /// iOS: CoreLocation - Always
   locationAlways,
+
   /// Android: Fine and Coarse Location
   /// iOS: CoreLocation - WhenInUse
   locationWhenInUse,
+
   /// Android: None
   /// iOS: MPMediaLibrary
   mediaLibrary
-}
\ No newline at end of file
+}

lib/permission_handler.dart

@@ -10,39 +10,37 @@ class PermissionHandler {
       const MethodChannel('flutter.baseflow.com/permissions/methods');
 
   /// Returns a [Future] containing the current permission status for the supplied [PermissionGroup].
-  static Future<PermissionStatus> checkPermissionStatus(PermissionGroup permission) async {
+  static Future<PermissionStatus> checkPermissionStatus(
+      PermissionGroup permission) async {
     final status = await _channel.invokeMethod(
-      'checkPermissionStatus', 
-      Codec.encodePermissionGroup(permission));
-    
+        'checkPermissionStatus', Codec.encodePermissionGroup(permission));
+
     return Codec.decodePermissionStatus(status);
   }
 
   /// Open the App settings page.
-  /// 
+  ///
   /// Returns [true] if the app settings page could be opened, otherwise [false] is returned.
   static Future<bool> openAppSettings() async =>
-    await _channel.invokeMethod("openAppSettings");
+      await _channel.invokeMethod("openAppSettings");
 
   /// Request the user for access to the supplied list of permissiongroups.
-  /// 
+  ///
   /// Returns a [Map] containing the status per requested permissiongroup.
-  static Future<Map<PermissionGroup, PermissionStatus>> requestPermissions(List<PermissionGroup> permissions) async {
+  static Future<Map<PermissionGroup, PermissionStatus>> requestPermissions(
+      List<PermissionGroup> permissions) async {
     final jsonData = Codec.encodePermissionGroups(permissions);
-    final status = await _channel.invokeMethod(
-      'requestPermissions', 
-      jsonData);
-    
+    final status = await _channel.invokeMethod('requestPermissions', jsonData);
+
     return Codec.decodePermissionRequestResult(status);
   }
 
   /// Request to see if you should show a rationale for requesting permission.
   ///
-  /// This method is only implemented on Android, calling this on iOS always  
+  /// This method is only implemented on Android, calling this on iOS always
   /// returns [false].
-  static Future<bool> shouldShowRequestPermissionRationale(PermissionGroup permission) async =>
-    await _channel.invokeMethod(
-      'shouldShowRequestPermissionRationale', 
-      Codec.encodePermissionGroup(permission));
-
+  static Future<bool> shouldShowRequestPermissionRationale(
+          PermissionGroup permission) async =>
+      await _channel.invokeMethod('shouldShowRequestPermissionRationale',
+          Codec.encodePermissionGroup(permission));
 }

lib/utils/codec.dart

@@ -6,30 +6,34 @@ class Codec {
   static PermissionStatus decodePermissionStatus(dynamic value) {
     final permission = json.decode(value);
 
-    return PermissionStatus.values.firstWhere((e) => e.toString().split('.').last == permission);
+    return PermissionStatus.values
+        .firstWhere((e) => e.toString().split('.').last == permission);
   }
 
-  static Map<PermissionGroup, PermissionStatus> decodePermissionRequestResult(dynamic value) {
+  static Map<PermissionGroup, PermissionStatus> decodePermissionRequestResult(
+      dynamic value) {
     final jsonObject = json.decode(value);
 
     final permissionResults = Map<PermissionGroup, PermissionStatus>();
     jsonObject.forEach((key, value) {
-      final permissionGroup = PermissionGroup.values.firstWhere((e) => e.toString().split('.').last == key.toString());
-      final permissionStatus = PermissionStatus.values.firstWhere((e) => e.toString().split('.').last == value.toString());
+      final permissionGroup = PermissionGroup.values
+          .firstWhere((e) => e.toString().split('.').last == key.toString());
+      final permissionStatus = PermissionStatus.values
+          .firstWhere((e) => e.toString().split('.').last == value.toString());
 
       permissionResults[permissionGroup] = permissionStatus;
     });
 
     return permissionResults;
   }
-  
+
   static String encodePermissionGroup(PermissionGroup permissionGroup) =>
       json.encode(_encodeEnum(permissionGroup));
 
   static String encodePermissionGroups(List<PermissionGroup> permissions) =>
-    json.encode(permissions.map((p) => _encodeEnum(p)).toList());
+      json.encode(permissions.map((p) => _encodeEnum(p)).toList());
 
   static String _encodeEnum(dynamic value) {
     return value.toString().split('.').last;
   }
-}
\ No newline at end of file
+}