Allow emit() to send a string on Android

android/src/main/java/com/gcrabtree/rctsocketio/SocketIoModule.java

@@ -65,7 +65,7 @@ public void initialize(String connection, ReadableMap options) {
      * @param items The data to pass through the SocketIo engine to the server endpoint.
      */
     @ReactMethod
-    public void emit(String event, ReadableMap items) {
+    public void emitData(String event, ReadableMap items) {
         HashMap<String, Object> map = SocketIoReadableNativeMap.toHashMap((ReadableNativeMap) items);
         if (mSocket != null) {
             mSocket.emit(event, new JSONObject(map));
@@ -75,6 +75,21 @@ public void emit(String event, ReadableMap items) {
         }
     }
 
+    /**
+     * Emit event to server
+     * @param event The name of the event.
+     * @param item The string to pass through the SocketIo engine to the server endpoint.
+     */
+    @ReactMethod
+    public void emitString(String event, String item) {
+        if (mSocket != null) {
+            mSocket.emit(event, item);
+        }
+        else {
+            Log.e(TAG, "Cannot execute emit. mSocket is null. Initialize socket first!!!");
+        }
+    }
+
     /**
      * Generates a Listener that handles an event. We've made it generic so that all response
      * data will be packed into the items hash. Data is sent to the ReactNative JS layer.

index.js

@@ -64,7 +64,11 @@ class Socket {
   }
 
   emit (event, data) {
-    this.sockets.emit(event, data);
+    if (typeof data === 'string') {
+      this.sockets.emitString(event, data);
+    } else {
+      this.sockets.emitData(event, data);
+    }
   }
 
   joinNamespace (namespace) {

ios/RNSwiftSocketIO/Socket.swift

@@ -74,7 +74,15 @@ class SocketIO: NSObject {
   * Emit event to server
   */
 
-  @objc func emit(event: String, items: AnyObject) -> Void {
+  @objc func emitData(event: String, items: AnyObject) -> Void {
+    self.socket.emit(event, items)
+  }
+
+  /**
+  * Emit event to server
+  */
+
+  @objc func emitString(event: String, items: AnyObject) -> Void {
     self.socket.emit(event, items)
   }
 

ios/RNSwiftSocketIO/SocketBridge.m

@@ -15,7 +15,8 @@ @interface RCT_EXTERN_MODULE(SocketIO, NSObject)
 RCT_EXTERN_METHOD(connect)
 RCT_EXTERN_METHOD(disconnect)
 RCT_EXTERN_METHOD(reconnect)
-RCT_EXTERN_METHOD(emit:(NSString*)event items:(id)items)
+RCT_EXTERN_METHOD(emitString:(NSString*)event items:(id)items)
+RCT_EXTERN_METHOD(emitData:(NSString*)event items:(id)items)
 RCT_EXTERN_METHOD(joinNamespace:(NSString *)namespace)
 RCT_EXTERN_METHOD(leaveNamespace)