android:if openId is blank,not send it

android/src/main/kotlin/com/jarvan/fluwx/handler/FluwxAuthHandler.kt

@@ -11,7 +11,11 @@ internal object FluwxAuthHandler {
         val req = SendAuth.Req()
         req.scope = call.argument("scope")
         req.state = call.argument("state")
-        req.openId = call.argument("openId")
+        val openId = call.argument<String?>("openId")
+        if(!openId.isNullOrBlank()){
+            req.openId = call.argument("openId")
+        }
+
         result.success(WXAPiHandler.wxApi?.sendReq(req))
     }
 

ios/Classes/handler/FluwxWXApiHandler.h

+//
+// Created by mo on 2018/8/23.
+//
+
+#import <Foundation/Foundation.h>
+
+
+@interface FluwxWXApiHandler : NSObject @end
\ No newline at end of file

ios/Classes/handler/FluwxWXApiHandler.m

+//
+// Created by mo on 2018/8/23.
+//
+
+#import "FluwxWXApiHandler.h"
+
+
+@implementation FluwxWXApiHandler {
+
+}
+@end
\ No newline at end of file