Fixes bug 1274, removed SDK check to see permission status of schedule exact…

Fixes bug 1274, removed SDK check to see permission status of schedule exact alarm on Android. (#1277)

* Fixes bug 1274, removed SDK check to see permission status.

* Added support for older API versions

permission_handler_android/CHANGELOG.md

+## 12.0.4
+
+* Returns `granted` on permission `Permission.scheduleExactAlarm` for devices running lower than Android S (API 31), before this change the default return was `denied`.
+* Updates `minSdkVersion` version to `flutter.minSdkVersion`.
+
 ## 12.0.3
 
 * Updates the dependency on `permission_handler_platform_interface` to version 4.1.0 (SiriKit support is only available for iOS or macOS).

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

@@ -126,14 +126,14 @@ final class PermissionManager implements PluginRegistry.ActivityResultListener,
                 return false;
             }
         } else if (requestCode == PermissionConstants.PERMISSION_CODE_SCHEDULE_EXACT_ALARM) {
+            permission = PermissionConstants.PERMISSION_GROUP_SCHEDULE_EXACT_ALARM;
+            AlarmManager alarmManager = (AlarmManager) activity.getSystemService(Context.ALARM_SERVICE);
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
-                AlarmManager alarmManager = (AlarmManager) activity.getSystemService(Context.ALARM_SERVICE);
                 status = alarmManager.canScheduleExactAlarms()
                     ? PermissionConstants.PERMISSION_STATUS_GRANTED
                     : PermissionConstants.PERMISSION_STATUS_DENIED;
-                permission = PermissionConstants.PERMISSION_GROUP_SCHEDULE_EXACT_ALARM;
             } else {
-                return false;
+                status = PermissionConstants.PERMISSION_STATUS_GRANTED;
             }
         } else {
             return false;

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

@@ -348,9 +348,8 @@ public class PermissionUtils {
                     permissionNames.add(Manifest.permission.READ_MEDIA_AUDIO);
                 break;
             case PermissionConstants.PERMISSION_GROUP_SCHEDULE_EXACT_ALARM:
-                // The SCHEDULE_EXACT_ALARM permission is introduced in Android S, meaning we should
-                // not handle permissions on pre Android S devices.
-                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S && hasPermissionInManifest(context, permissionNames, Manifest.permission.SCHEDULE_EXACT_ALARM))
+                // The SCHEDULE_EXACT_ALARM permission is introduced in Android S, before Android 31 it should alway return Granted
+                if (hasPermissionInManifest(context, permissionNames, Manifest.permission.SCHEDULE_EXACT_ALARM))
                     permissionNames.add(Manifest.permission.SCHEDULE_EXACT_ALARM);
                 break;
             case PermissionConstants.PERMISSION_GROUP_MEDIA_LIBRARY:

permission_handler_android/example/android/app/build.gradle

@@ -31,7 +31,7 @@ android {
     defaultConfig {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "com.baseflow.permissionhandler.example"
-        minSdkVersion 16
+        minSdkVersion flutter.minSdkVersion
         targetSdkVersion 33
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName

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: 12.0.3
+version: 12.0.4
 
 environment:
   sdk: ">=2.15.0 <4.0.0"