Update

android/build.gradle

@@ -34,5 +34,5 @@ android {
     }
 }
 dependencies {
-    api 'io.openim:core-sdk:2.3.4-rc4@aar'
+    api 'io.openim:core-sdk:2.3.4-rc6@aar'
 }

android/src/main/java/io/openim/flutter_openim_sdk/listener/OnSignalingListener.java

@@ -34,6 +34,11 @@ public class OnSignalingListener implements open_im_sdk_callback.OnSignalingList
         CommonUtil.emitEvent("signalingListener", "onInviteeRejectedByOtherDevice", s);
     }
 
+    @Override
+    public void onReceiveCustomSignal(String s) {
+        CommonUtil.emitEvent("signalingListener", "onReceiveCustomSignal", s);
+    }
+
     @Override
     public void onReceiveNewInvitation(String s) {
         CommonUtil.emitEvent("signalingListener", "onReceiveNewInvitation", s);

android/src/main/java/io/openim/flutter_openim_sdk/manager/SignalingManager.java

@@ -114,4 +114,12 @@ public class SignalingManager extends BaseManager {
                 value(methodCall, "operationID"),
                 value(methodCall, "roomID"));
     }
+
+    public void signalingSendCustomSignal(MethodCall methodCall, MethodChannel.Result result) {
+        Open_im_sdk.signalingSendCustomSignal(
+                new OnBaseListener(result, methodCall),
+                value(methodCall, "operationID"),
+                value(methodCall, "customInfo"),
+                value(methodCall, "roomID"));
+    }
 }