Report ignoreBatteryOptimizations permission correctly (#1200)

* Report ignoreBatteryOptimizations permission correctly

* Report restricted status pre-marshmallow devices

permission_handler_android/CHANGELOG.md

+## 12.0.1
+
+* Fixes a bug where the `ignoreBatteryOptimizations` permission didn't report the correct status when the permission is requested and granted.
+
 ## 12.0.0
 
 * **BREAKING CHANGES:**

permission_handler_android/android/src/main/java/com/baseflow/permissionhandler/PermissionManager.java

@@ -35,15 +35,12 @@ import io.flutter.plugin.common.PluginRegistry;
 
 final class PermissionManager implements PluginRegistry.ActivityResultListener, PluginRegistry.RequestPermissionsResultListener {
 
+    @NonNull
+    private final Context context;
     @Nullable
     private RequestPermissionsSuccessCallback successCallback;
-
     @Nullable
     private Activity activity;
-
-    @NonNull
-    private final Context context;
-
     /**
      * The number of pending permission requests.
      * <p>
@@ -77,14 +74,20 @@ final class PermissionManager implements PluginRegistry.ActivityResultListener,
             return false;
         }
 
-        int status = resultCode == Activity.RESULT_OK
-            ? PermissionConstants.PERMISSION_STATUS_GRANTED
-            : PermissionConstants.PERMISSION_STATUS_DENIED;
-
-        int permission;
+        int status, permission;
 
         if (requestCode == PermissionConstants.PERMISSION_CODE_IGNORE_BATTERY_OPTIMIZATIONS) {
             permission = PermissionConstants.PERMISSION_GROUP_IGNORE_BATTERY_OPTIMIZATIONS;
+
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+                String packageName = context.getPackageName();
+                PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
+                status = (pm != null && pm.isIgnoringBatteryOptimizations(packageName))
+                        ? PermissionConstants.PERMISSION_STATUS_GRANTED
+                        : PermissionConstants.PERMISSION_STATUS_DENIED;
+            } else {
+                status = PermissionConstants.PERMISSION_STATUS_RESTRICTED;
+            }
         } else if (requestCode == PermissionConstants.PERMISSION_CODE_MANAGE_EXTERNAL_STORAGE) {
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
                 status = Environment.isExternalStorageManager()
@@ -264,21 +267,6 @@ final class PermissionManager implements PluginRegistry.ActivityResultListener,
         return true;
     }
 
-    @FunctionalInterface
-    interface RequestPermissionsSuccessCallback {
-        void onSuccess(Map<Integer, Integer> results);
-    }
-
-    @FunctionalInterface
-    interface CheckPermissionsSuccessCallback {
-        void onSuccess(@PermissionConstants.PermissionStatus int permissionStatus);
-    }
-
-    @FunctionalInterface
-    interface ShouldShowRequestPermissionRationaleSuccessCallback {
-        void onSuccess(boolean shouldShowRequestPermissionRationale);
-    }
-
     /**
      * Determines the permission status of the provided permission.
      * <p>
@@ -666,4 +654,19 @@ final class PermissionManager implements PluginRegistry.ActivityResultListener,
         }
         return true;
     }
+
+    @FunctionalInterface
+    interface RequestPermissionsSuccessCallback {
+        void onSuccess(Map<Integer, Integer> results);
+    }
+
+    @FunctionalInterface
+    interface CheckPermissionsSuccessCallback {
+        void onSuccess(@PermissionConstants.PermissionStatus int permissionStatus);
+    }
+
+    @FunctionalInterface
+    interface ShouldShowRequestPermissionRationaleSuccessCallback {
+        void onSuccess(boolean shouldShowRequestPermissionRationale);
+    }
 }

permission_handler_android/pubspec.yaml

 name: permission_handler_android
 description: Permission plugin for Flutter. This plugin provides the Android API to request and check permissions.
 homepage: https://github.com/baseflow/flutter-permission-handler
-version: 12.0.0
+version: 12.0.1
 
 environment:
   sdk: ">=2.15.0 <4.0.0"