fix #338

ios/Classes/FluwxPlugin.m

@@ -10,14 +10,23 @@ FluwxShareHandler *_fluwxShareHandler;
 
 BOOL handleOpenURLByFluwx = YES;
 
+FlutterMethodChannel *channel = nil;
+
 + (void)registerWithRegistrar:(NSObject <FlutterPluginRegistrar> *)registrar {
-    FlutterMethodChannel *channel = [FlutterMethodChannel
-            methodChannelWithName:@"com.jarvanmo/fluwx"
-                  binaryMessenger:[registrar messenger]];
-    FluwxPlugin *instance = [[FluwxPlugin alloc] initWithRegistrar:registrar methodChannel:channel];
-    [registrar addMethodCallDelegate:instance channel:channel];
-    [[FluwxResponseHandler defaultManager] setMethodChannel:channel];
-    [registrar addApplicationDelegate:instance];
+    
+#if TARGET_OS_IPHONE
+        if (channel == nil) {
+#endif
+        channel = [FlutterMethodChannel
+                methodChannelWithName:@"com.jarvanmo/fluwx"
+                      binaryMessenger:[registrar messenger]];
+        FluwxPlugin *instance = [[FluwxPlugin alloc] initWithRegistrar:registrar methodChannel:channel];
+        [registrar addMethodCallDelegate:instance channel:channel];
+        [[FluwxResponseHandler defaultManager] setMethodChannel:channel];
+        [registrar addApplicationDelegate:instance];
+#if TARGET_OS_IPHONE
+        }
+#endif
 
 }