Merge pull request #75 from BaseflowIT/features/check_service_status

 Added option to check service status

.travis.yml

@@ -14,7 +14,7 @@ matrix:
             - libstdc++6
             - fonts-droid
       before_script:
-        - git clone https://github.com/flutter/flutter.git $HOME/flutter
+        - git clone --single-branch --branch stable https://github.com/flutter/flutter.git $HOME/flutter
         - export PATH=$HOME/flutter/bin:$HOME/flutter/bin/cache/dart-sdk/bin:$PATH
         - flutter doctor
       script:

CHANGELOG.md

+## 2.2.0
+
+* Added new method `checkServiceStatus` to allow users to check if the location services (on Android and iOS) and motion services (iOS only) are enabled;
+* When checking permission status (using `checkPermissionStatus`) return `PermissionStatus.disabled` when permissions are granted or denied and the location services (on Android and iOS) or the motion services (iOS only) are disabled.
+
 ## 2.1.3
 
 * Fixed bug on iOS where result of the `openAppSettings` call always returned `false`;

README.md

@@ -22,7 +22,7 @@ To use this plugin, add `permission_handler` as a [dependency in your pubspec.ya
 
 ```yaml
 dependencies:
-  permission_handler: '^2.1.3'
+  permission_handler: '^2.2.0'
 ```
 
 > **NOTE:** There's a known issue with integrating plugins that use Swift into a Flutter project created with the Objective-C template. See issue [Flutter#16049](https://github.com/flutter/flutter/issues/16049) for help on integration.
@@ -31,7 +31,7 @@ dependencies:
 
 ### Requesting permission
 
-``` dart
+```dart
 import 'package:permission_handler/permission_handler.dart';
 
 Map<PermissionGroup, PermissionStatus> permissions = await PermissionHandler().requestPermissions([PermissionGroup.contacts]);
@@ -39,15 +39,25 @@ Map<PermissionGroup, PermissionStatus> permissions = await PermissionHandler().r
 
 ### Checking permission
 
-``` dart
+```dart
 import 'package:permission_handler/permission_handler.dart';
 
 PermissionStatus permission = await PermissionHandler().checkPermissionStatus(PermissionGroup.contacts);
 ```
 
+### Checking service status
+
+```dart
+import 'package:permission_handler/permission_handler.dart';
+
+ServiceStatus serviceStatus = await PermissionHandler().checkServiceStatus(PermissionGroup.location);
+```
+
+Checking the service status only makes sense for the `PermissionGroup.location` on Android and the `PermissionGroup.location`, `PermissionGroup.locationWhenInUser`, `PermissionGroup.locationAlways` or `PermissionGroup.sensors` on iOS. All other permission groups are not backed by a separate service and will always return `ServiceStatus.notApplicable`.
+
 ### Open app settings
 
-``` dart
+```dart
 import 'package:permission_handler/permission_handler.dart';
 
 bool isOpened = await PermissionHandler().openAppSettings();
@@ -55,7 +65,7 @@ bool isOpened = await PermissionHandler().openAppSettings();
 
 ### Show a rationale for requesting permission (Android only)
 
-``` dart
+```dart
 import 'package:permission_handler/permission_handler.dart';
 
 bool isShown = await PermissionHandler().shouldShowRequestPermissionRationale(PermissionGroup.contacts);
@@ -67,7 +77,7 @@ This will always return `false` on iOS.
 
 Defines the permission groups for which permissions can be checked or requested.
 
-``` dart
+```dart
 enum PermissionGroup {
   /// The unknown permission only used for return type, never requested
   unknown,
@@ -138,7 +148,7 @@ enum PermissionGroup {
 
 Defines the state of a permission group
 
-``` dart
+```dart
 enum PermissionStatus {
   /// Permission to access the requested feature is denied by the user.
   denied,
@@ -157,6 +167,27 @@ enum PermissionStatus {
 }
 ```
 
+### Overview of possible service statuses
+
+Defines the state of the backing service for the supplied permission group
+
+```dart
+/// Defines the state of a service related to the permission group
+enum ServiceStatus {
+  /// The unknown service status indicates the state of the service could not be determined.
+  unknown,
+
+  /// There is no service for the supplied permission group.
+  notApplicable,
+
+  /// The service for the supplied permission group is disabled.
+  disabled,
+
+  /// The service for the supplied permission group is enabled.
+  enabled
+}
+```
+
 ## Issues
 
 Please file any issues, bugs or feature request as an issue on our [GitHub](https://github.com/BaseflowIT/flutter-permission-handler/issues) page.

android/src/main/kotlin/com/baseflow/permissionhandler/PermissionHandlerPlugin.kt

@@ -12,6 +12,7 @@ import androidx.core.content.ContextCompat
 import android.util.Log
 import com.baseflow.permissionhandler.data.PermissionGroup
 import com.baseflow.permissionhandler.data.PermissionStatus
+import com.baseflow.permissionhandler.data.ServiceStatus
 import com.baseflow.permissionhandler.utils.Codec
 import io.flutter.plugin.common.MethodChannel
 import io.flutter.plugin.common.MethodChannel.MethodCallHandler
@@ -99,7 +100,14 @@ class PermissionHandlerPlugin(private val registrar: Registrar, private var requ
             call.method == "checkPermissionStatus" -> {
                 val permission = Codec.decodePermissionGroup(call.arguments)
                 val permissionStatus = checkPermissionStatus(permission)
-                handleSuccess(permissionStatus, result)
+
+                result?.success(Codec.encodePermissionStatus(permissionStatus))
+            }
+            call.method == "checkServiceStatus" -> {
+                val permission = Codec.decodePermissionGroup(call.arguments)
+                val serviceStatus = checkServiceStatus(permission)
+
+                result?.success(Codec.encodeServiceStatus(serviceStatus))
             }
             call.method == "requestPermissions" -> {
                 if (mResult != null) {
@@ -168,6 +176,20 @@ class PermissionHandlerPlugin(private val registrar: Registrar, private var requ
         return PermissionStatus.GRANTED
     }
 
+    private fun checkServiceStatus(permission: PermissionGroup) : ServiceStatus {
+        val context: Context? = registrar.activity() ?: registrar.activeContext()
+        if (context == null) {
+            Log.d(mLogTag, "Unable to detect current Activity or App Context.")
+            return ServiceStatus.UNKNOWN
+        }
+
+        if (permission == PermissionGroup.LOCATION || permission == PermissionGroup.LOCATION_ALWAYS || permission == PermissionGroup.LOCATION_WHEN_IN_USE) {
+            return if(isLocationServiceEnabled(context)) ServiceStatus.ENABLED else ServiceStatus.DISABLED
+        }
+
+        return ServiceStatus.NOT_APPLICABLE
+    }
+
     private fun shouldShowRequestPermissionRationale(permission: PermissionGroup) : Boolean {
         val activity = registrar.activity()
         if(activity == null)
@@ -479,8 +501,4 @@ class PermissionHandlerPlugin(private val registrar: Registrar, private var requ
             return !TextUtils.isEmpty(locationProviders)
         }
     }
-
-    private fun handleSuccess(permissionStatus: PermissionStatus, result: Result?) {
-        result?.success(Codec.encodePermissionStatus(permissionStatus))
-    }
 }

android/src/main/kotlin/com/baseflow/permissionhandler/data/ServiceStatus.kt

+package com.baseflow.permissionhandler.data
+
+import com.google.gson.annotations.SerializedName
+
+enum class ServiceStatus {
+    @SerializedName("unknown")
+    UNKNOWN,
+    @SerializedName("disabled")
+    DISABLED,
+    @SerializedName("enabled")
+    ENABLED,
+    @SerializedName("notApplicable")
+    NOT_APPLICABLE,
+}
\ No newline at end of file

android/src/main/kotlin/com/baseflow/permissionhandler/utils/Codec.kt

@@ -2,6 +2,7 @@ package com.baseflow.permissionhandler.utils
 
 import com.baseflow.permissionhandler.data.PermissionGroup
 import com.baseflow.permissionhandler.data.PermissionStatus
+import com.baseflow.permissionhandler.data.ServiceStatus
 import com.google.gson.Gson
 import com.google.gson.GsonBuilder
 import com.google.gson.reflect.TypeToken
@@ -29,6 +30,11 @@ class Codec {
         }
 
         @JvmStatic
+        fun encodeServiceStatus(serviceStatus: ServiceStatus) : String {
+            return gsonDecoder.toJson(serviceStatus)
+        }
+
+        @JvmStatic
         fun encodePermissionRequestResult(permissionResults: Map<PermissionGroup, PermissionStatus>) : String {
             val jsonString = gsonDecoder.toJson(permissionResults)
             return jsonString

example/ios/Runner.xcodeproj/project.pbxproj

@@ -8,6 +8,7 @@
 
 /* Begin PBXBuildFile section */
 		1498D2341E8E89220040F4C2 /* GeneratedPluginRegistrant.m in Sources */ = {isa = PBXBuildFile; fileRef = 1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */; };
+		2D5378261FAA1A9400D5DBA9 /* flutter_assets in Resources */ = {isa = PBXBuildFile; fileRef = 2D5378251FAA1A9400D5DBA9 /* flutter_assets */; };
 		3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */ = {isa = PBXBuildFile; fileRef = 3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */; };
 		3B80C3941E831B6300D905FE /* App.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 3B80C3931E831B6300D905FE /* App.framework */; };
 		3B80C3951E831B6300D905FE /* App.framework in Embed Frameworks */ = {isa = PBXBuildFile; fileRef = 3B80C3931E831B6300D905FE /* App.framework */; settings = {ATTRIBUTES = (CodeSignOnCopy, RemoveHeadersOnCopy, ); }; };
@@ -38,6 +39,7 @@
 /* Begin PBXFileReference section */
 		1498D2321E8E86230040F4C2 /* GeneratedPluginRegistrant.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = GeneratedPluginRegistrant.h; sourceTree = "<group>"; };
 		1498D2331E8E89220040F4C2 /* GeneratedPluginRegistrant.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = GeneratedPluginRegistrant.m; sourceTree = "<group>"; };
+		2D5378251FAA1A9400D5DBA9 /* flutter_assets */ = {isa = PBXFileReference; lastKnownFileType = folder; name = flutter_assets; path = Flutter/flutter_assets; sourceTree = SOURCE_ROOT; };
 		36F84C9A972D968241208A7F /* Pods_Runner.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = Pods_Runner.framework; sourceTree = BUILT_PRODUCTS_DIR; };
 		3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist.xml; name = AppFrameworkInfo.plist; path = Flutter/AppFrameworkInfo.plist; sourceTree = "<group>"; };
 		3B80C3931E831B6300D905FE /* App.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = App.framework; path = Flutter/App.framework; sourceTree = "<group>"; };
@@ -81,6 +83,7 @@
 			children = (
 				3B80C3931E831B6300D905FE /* App.framework */,
 				3B3967151E833CAA004F5970 /* AppFrameworkInfo.plist */,
+				2D5378251FAA1A9400D5DBA9 /* flutter_assets */,
 				9740EEBA1CF902C7004384FC /* Flutter.framework */,
 				9740EEB21CF90195004384FC /* Debug.xcconfig */,
 				7AFA3C8E1D35360C0083082E /* Release.xcconfig */,
@@ -203,6 +206,7 @@
 			files = (
 				97C147011CF9000F007C117D /* LaunchScreen.storyboard in Resources */,
 				3B3967161E833CAA004F5970 /* AppFrameworkInfo.plist in Resources */,
+				2D5378261FAA1A9400D5DBA9 /* flutter_assets in Resources */,
 				97C146FE1CF9000F007C117D /* Assets.xcassets in Resources */,
 				97C146FC1CF9000F007C117D /* Main.storyboard in Resources */,
 			);
@@ -218,7 +222,7 @@
 			);
 			inputPaths = (
 				"${SRCROOT}/Pods/Target Support Files/Pods-Runner/Pods-Runner-frameworks.sh",
-				"${PODS_ROOT}/../.symlinks/flutter/ios/Flutter.framework",
+				"${PODS_ROOT}/../.symlinks/flutter/ios-release/Flutter.framework",
 				"${BUILT_PRODUCTS_DIR}/permission_handler/permission_handler.framework",
 			);
 			name = "[CP] Embed Pods Frameworks";

example/lib/main.dart

@@ -98,12 +98,28 @@ class _PermissionState extends State<PermissionWidget> {
         _permissionStatus.toString(),
         style: TextStyle(color: getPermissionColor()),
       ),
-      onTap: () async {
+      trailing: IconButton(
+          icon: const Icon(Icons.info),
+          onPressed: () {
+            checkServiceStatus(context, _permissionGroup);
+          }),
+      onTap: () {
         requestPermission(_permissionGroup);
       },
     );
   }
 
+  void checkServiceStatus(BuildContext context, PermissionGroup permission) {
+    PermissionHandler()
+        .checkServiceStatus(permission)
+        .then((ServiceStatus serviceStatus) {
+      final SnackBar snackBar =
+          SnackBar(content: Text(serviceStatus.toString()));
+
+      Scaffold.of(context).showSnackBar(snackBar);
+    });
+  }
+
   void requestPermission(PermissionGroup permission) {
     final List<PermissionGroup> permissions = <PermissionGroup>[permission];
     final Future<Map<PermissionGroup, PermissionStatus>> requestFuture =

ios/Classes/PermissionManager.swift

@@ -22,6 +22,13 @@ class PermissionManager: NSObject {
         result(Codec.encodePermissionStatus(permissionStatus: permissionStatus))
     }
     
+    static func checkServiceStatus(permission: PermissionGroup, result: @escaping FlutterResult) {
+        let permissionStrategy = PermissionManager.createPermissionStrategy(permission: permission)
+        let serviceStatus = permissionStrategy.checkServiceStatus(permission: permission)
+        
+        result(Codec.encodeServiceStatus(serviceStatus: serviceStatus))
+    }
+    
     func requestPermissions(permissions: [PermissionGroup], completion: @escaping PermissionRequestCompletion) {
         var requestQueue = Set(permissions.map { $0 })
         var permissionStatusResult: [PermissionGroup: PermissionStatus] = [:]

ios/Classes/SwiftPermissionHandlerPlugin.swift

@@ -25,6 +25,12 @@ public class SwiftPermissionHandlerPlugin: NSObject, FlutterPlugin {
             PermissionManager.checkPermissionStatus(
                 permission: permission,
                 result: result)
+        } else if call.method == "checkServiceStatus" {
+            let permission: PermissionGroup = Codec.decodePermissionGroup(from: call.arguments)
+            
+            PermissionManager.checkServiceStatus(
+                permission: permission,
+                result: result)
         } else if call.method == "requestPermissions" {
             if _methodResult != nil {
                 result(FlutterError(

ios/Classes/data/ServiceStatus.swift

+//
+//  ServiceStatus.swift
+//  permission_handler
+//
+//  Created by Maurits van Beusekom on 12/02/2019.
+//
+
+import Foundation
+
+enum ServiceStatus : String, Codable {
+    case disabled = "disabled"
+    case enabled = "enabled"
+    case notApplicable = "notApplicable"
+    case unknown = "unknown"
+}

ios/Classes/strategies/AudioVideoPermissionStrategy.swift

@@ -19,6 +19,10 @@ class AudioVideoPermissionStrategy : NSObject, PermissionStrategy {
         return PermissionStatus.unknown
     }
     
+    func checkServiceStatus(permission: PermissionGroup) -> ServiceStatus {
+        return ServiceStatus.notApplicable
+    }
+    
     private static func getPermissionStatus(mediaType: AVMediaType) -> PermissionStatus {
         let status: AVAuthorizationStatus = AVCaptureDevice.authorizationStatus(for: mediaType)
         

ios/Classes/strategies/ContactPermissionStrategy.swift

@@ -45,6 +45,10 @@ class ContactPermissionStrategy : NSObject, PermissionStrategy {
         }
     }
     
+    func checkServiceStatus(permission: PermissionGroup) -> ServiceStatus {
+        return ServiceStatus.notApplicable
+    }
+    
     func requestPermission(permission: PermissionGroup, completionHandler: @escaping PermissionStatusHandler) {
         let permissionStatus = checkPermissionStatus(permission: permission)
         

ios/Classes/strategies/EventPermissionStrategy.swift

@@ -36,6 +36,10 @@ class EventPermissionStrategy : NSObject, PermissionStrategy {
         }
     }
     
+    func checkServiceStatus(permission: PermissionGroup) -> ServiceStatus {
+        return ServiceStatus.notApplicable
+    }
+    
     func requestPermission(permission: PermissionGroup, completionHandler: @escaping PermissionStatusHandler) {
         let permissionStatus = checkPermissionStatus(permission: permission)
         

ios/Classes/strategies/LocationPermissionStrategy.swift

@@ -23,13 +23,19 @@ class LocationPermissionStrategy : NSObject, PermissionStrategy, CLLocationManag
             permission: permission,
             authorizationStatus: authorizationStatus)
         
-        if permissionStatus == PermissionStatus.granted && !CLLocationManager.locationServicesEnabled() {
+        if (permissionStatus == PermissionStatus.granted || permissionStatus == PermissionStatus.denied) && !CLLocationManager.locationServicesEnabled() {
             return PermissionStatus.disabled
         }
         
         return permissionStatus
     }
     
+    func checkServiceStatus(permission: PermissionGroup) -> ServiceStatus {
+        return CLLocationManager.locationServicesEnabled()
+            ? ServiceStatus.enabled
+            : ServiceStatus.disabled
+    }
+    
     func requestPermission(permission: PermissionGroup, completionHandler: @escaping PermissionStatusHandler) {
         let permissionStatus = checkPermissionStatus(permission: permission)
         

ios/Classes/strategies/MediaLibraryPermissionStrategy.swift

@@ -24,6 +24,10 @@ class MediaLibraryPermissionStrategy : NSObject, PermissionStrategy {
         return PermissionStatus.unknown
     }
     
+    func checkServiceStatus(permission: PermissionGroup) -> ServiceStatus {
+        return ServiceStatus.notApplicable
+    }
+    
     func requestPermission(permission: PermissionGroup, completionHandler: @escaping PermissionStatusHandler) -> Void {
         let status = checkPermissionStatus(permission: permission)
         if status != PermissionStatus.unknown {

ios/Classes/strategies/PermissionStrategy.swift

@@ -11,5 +11,6 @@ typealias PermissionStatusHandler = (_ permissionStatus: PermissionStatus) -> Vo
 
 protocol PermissionStrategy {
     func checkPermissionStatus(permission: PermissionGroup) -> PermissionStatus
+    func checkServiceStatus(permission: PermissionGroup) -> ServiceStatus
     func requestPermission(permission: PermissionGroup, completionHandler: @escaping PermissionStatusHandler)
 }

ios/Classes/strategies/PhotoPermissionStrategy.swift

@@ -20,6 +20,10 @@ class PhotoPermissionStrategy : NSObject, PermissionStrategy {
         return PhotoPermissionStrategy.determinePermissionStatus(authorizationStatus: status)
     }
     
+    func checkServiceStatus(permission: PermissionGroup) -> ServiceStatus {
+        return ServiceStatus.notApplicable
+    }
+    
     func requestPermission(permission: PermissionGroup, completionHandler: @escaping PermissionStatusHandler) {
         let status = checkPermissionStatus(permission: permission)
         

ios/Classes/strategies/SensorPermissionStrategy.swift

@@ -30,7 +30,7 @@ class SensorPermissionStrategy : NSObject, PermissionStrategy {
                 permissionStatus = PermissionStatus.unknown
             }
             
-            if permissionStatus == PermissionStatus.granted && !CMMotionActivityManager.isActivityAvailable() {
+            if (permissionStatus == PermissionStatus.granted || permissionStatus == PermissionStatus.denied) && !CMMotionActivityManager.isActivityAvailable() {
                 return PermissionStatus.disabled
             } else {
                 return permissionStatus
@@ -40,6 +40,16 @@ class SensorPermissionStrategy : NSObject, PermissionStrategy {
         return PermissionStatus.unknown
     }
     
+    func checkServiceStatus(permission: PermissionGroup) -> ServiceStatus {
+        if #available(iOS 11.0, *) {
+            return CMMotionActivityManager.isActivityAvailable()
+                ? ServiceStatus.enabled
+                : ServiceStatus.disabled
+        }
+        
+        return ServiceStatus.unknown
+    }
+    
     func requestPermission(permission: PermissionGroup, completionHandler: @escaping PermissionStatusHandler) {
         let status = checkPermissionStatus(permission: permission)
         

ios/Classes/strategies/SpeechPermissionStrategy.swift

@@ -24,6 +24,10 @@ class SpeechPermissionStrategy : NSObject, PermissionStrategy {
         return PermissionStatus.unknown
     }
     
+    func checkServiceStatus(permission: PermissionGroup) -> ServiceStatus {
+        return ServiceStatus.notApplicable
+    }
+    
     func requestPermission(permission: PermissionGroup, completionHandler: @escaping PermissionStatusHandler) {
         let status = checkPermissionStatus(permission: permission)
         

ios/Classes/strategies/UnknownPermissionStrategy.swift

@@ -12,6 +12,10 @@ class UnknownPermissionStrategy : NSObject, PermissionStrategy {
         return PermissionStatus.unknown
     }
     
+    func checkServiceStatus(permission: PermissionGroup) -> ServiceStatus {
+        return ServiceStatus.unknown
+    }
+    
     func requestPermission(permission: PermissionGroup, completionHandler: @escaping PermissionStatusHandler) {
         completionHandler(PermissionStatus.unknown)
     }

ios/Classes/utils/Codec.swift

@@ -31,6 +31,11 @@ struct Codec {
         return status
     }
     
+    static func encodeServiceStatus(serviceStatus: ServiceStatus) -> String? {
+        let status = "\"" + serviceStatus.rawValue + "\""
+        return status
+    }
+    
     static func encodePermissionRequestResult(permissionStatusResult: [PermissionGroup: PermissionStatus]) -> String? {
         let jsonDict = Dictionary(uniqueKeysWithValues:
             permissionStatusResult.map {

ios/permission_handler.podspec

@@ -3,7 +3,7 @@
 #
 Pod::Spec.new do |s|
   s.name             = 'permission_handler'
-  s.version          = '2.1.3'
+  s.version          = '2.2.0'
   s.summary          = 'Permission plugin for Flutter.'
   s.description      = <<-DESC
 Permission plugin for Flutter. This plugin provides a cross-platform (iOS, Android) API to request and check permissions.

lib/permission_enums.dart

@@ -18,6 +18,21 @@ enum PermissionStatus {
   unknown
 }
 
+/// Defines the state of a service related to the permission group
+enum ServiceStatus {
+  /// The unknown service status indicates the state of the service could not be determined.
+  unknown,
+
+  /// There is no service for the supplied permission group.
+  notApplicable,
+
+  /// The service for the supplied permission group is disabled.
+  disabled,
+
+  /// The service for the supplied permission group is enabled.
+  enabled
+}
+
 /// Defines the permission groups for which permissions can be checked or requested.
 enum PermissionGroup {
   /// The unknown permission only used for return type, never requested

lib/permission_handler.dart

@@ -29,6 +29,8 @@ class PermissionHandler {
 
   final MethodChannel _methodChannel;
 
+  /// Check current permission status.
+  ///
   /// Returns a [Future] containing the current permission status for the supplied [PermissionGroup].
   Future<PermissionStatus> checkPermissionStatus(
       PermissionGroup permission) async {
@@ -38,11 +40,22 @@ class PermissionHandler {
     return Codec.decodePermissionStatus(status);
   }
 
+  /// Check current service status.
+  ///
+  /// Returns a [Future] containing the current service status for the supplied [PermissionGroup].
+  Future<ServiceStatus> checkServiceStatus(PermissionGroup permission) async {
+    final String status = await _methodChannel.invokeMethod(
+        'checkServiceStatus', Codec.encodePermissionGroup(permission));
+
+    return Codec.decodeServiceStatus(status);
+  }
+
   /// Open the App settings page.
   ///
   /// Returns [true] if the app settings page could be opened, otherwise [false] is returned.
   Future<bool> openAppSettings() async {
     final bool hasOpened = await _methodChannel.invokeMethod('openAppSettings');
+
     return hasOpened;
   }
 

lib/utils/codec.dart

@@ -2,12 +2,19 @@ part of permission_handler;
 
 class Codec {
   static PermissionStatus decodePermissionStatus(String value) {
-    final dynamic permission = json.decode(value);
+    final String permission = json.decode(value);
 
     return PermissionStatus.values.firstWhere(
         (PermissionStatus e) => e.toString().split('.').last == permission);
   }
 
+  static ServiceStatus decodeServiceStatus(String value) {
+    final String status = json.decode(value);
+
+    return ServiceStatus.values.firstWhere(
+        (ServiceStatus s) => s.toString().split('.').last == status);
+  }
+
   static Map<PermissionGroup, PermissionStatus> decodePermissionRequestResult(
       String value) {
     final Map<String, dynamic> jsonObject = json.decode(value);

pubspec.yaml

 name: permission_handler
 description: Permission plugin for Flutter. This plugin provides a cross-platform (iOS, Android) API to request and check permissions.
-version: 2.1.3
+version: 2.2.0
 author: Baseflow <hello@baseflow.com>
 homepage: https://github.com/baseflowit/flutter-permission-handler
 

scripts/before_build_apks.sh

@@ -20,7 +20,7 @@ unzip -qq gradle-4.1-bin.zip -d $HOME/gradle-4.1
 export GRADLE_HOME=$HOME/gradle-4.1
 export PATH=$GRADLE_HOME/bin:$PATH
 gradle -v
-git clone https://github.com/flutter/flutter.git $HOME/flutter
+git clone --single-branch --branch stable https://github.com/flutter/flutter.git $HOME/flutter
 export PATH=$HOME/flutter/bin:$HOME/flutter/bin/cache/dart-sdk/bin:$PATH
 flutter doctor
 

scripts/before_build_ipas.sh

@@ -5,6 +5,6 @@ brew install ideviceinstaller
 brew install ios-deploy
 pod repo update
 gem update cocoapods
-git clone https://github.com/flutter/flutter.git $HOME/flutter
+git clone --single-branch --branch stable https://github.com/flutter/flutter.git $HOME/flutter
 export PATH=$HOME/flutter/bin:$HOME/flutter/bin/cache/dart-sdk/bin:$PATH
 flutter doctor