Added getUserId and getAttributes method implementations in android side.

Author: NomanShoaib

android/src/main/java/com/optimizely/optimizely_flutter_sdk/OptimizelyFlutterClient.java

@@ -371,6 +371,24 @@ protected void trackEvent(ArgumentsParser argumentsParser, @NonNull Result resul
         }
     }
 
+    protected void getUserId(ArgumentsParser argumentsParser, @NonNull Result result) {
+        OptimizelyUserContext userContext = getUserContext(argumentsParser);
+        if (userContext == null) {
+            result.success(createResponse(false, ErrorMessage.USER_CONTEXT_NOT_FOUND));
+            return;
+        }
+        result.success(createResponse(true, Collections.singletonMap(RequestParameterKey.USER_ID, userContext.getUserId()), ""));
+    }
+
+    protected void getAttributes(ArgumentsParser argumentsParser, @NonNull Result result) {
+        OptimizelyUserContext userContext = getUserContext(argumentsParser);
+        if (userContext == null) {
+            result.success(createResponse(false, ErrorMessage.USER_CONTEXT_NOT_FOUND));
+            return;
+        }
+        result.success(createResponse(true, Collections.singletonMap(RequestParameterKey.ATTRIBUTES, userContext.getAttributes()), ""));
+    }
+
     protected void setAttribute(ArgumentsParser argumentsParser, @NonNull Result result) {
         String sdkKey = argumentsParser.getSdkKey();
         if (sdkKey == null) {

android/src/main/java/com/optimizely/optimizely_flutter_sdk/OptimizelyFlutterSdkPlugin.java

@@ -62,6 +62,14 @@ public void onMethodCall(@NonNull MethodCall call, @NonNull Result result) {
         createUserContext(argumentsParser, result);
         break;
       }
+      case APIs.GET_USER_ID: {
+        getUserId(argumentsParser, result);
+        break;
+      }
+      case APIs.GET_ATTRIBUTES: {
+        getAttributes(argumentsParser, result);
+        break;
+      }
       case APIs.SET_ATTRIBUTES: {
         setAttribute(argumentsParser, result);
         break;

android/src/main/java/com/optimizely/optimizely_flutter_sdk/helper_classes/Constants.java

@@ -21,6 +21,8 @@ public static class APIs {
         public static final String INITIALIZE = "initialize";
         public static final String GET_OPTIMIZELY_CONFIG = "getOptimizelyConfig";
         public static final String CREATE_USER_CONTEXT = "createUserContext";
+        public static final String GET_USER_ID = "getUserId";
+        public static final String GET_ATTRIBUTES = "getAttributes";
         public static final String SET_ATTRIBUTES="setAttributes";
         public static final String GET_FORCED_DECISION = "getForcedDecision";
         public static final String REMOVE_FORCED_DECISION = "removeForcedDecision";