fix bugs

android/src/main/kotlin/com/jarvan/fluwx/FluwxPlugin.kt

@@ -71,10 +71,12 @@ class FluwxPlugin(private val registrar: Registrar, channel: MethodChannel) : Me
 
         if ("authByQRCode" == call.method) {
             fluwxAuthHandler.authByQRCode(call, result)
+            return
         }
 
         if ("stopAuthByQRCode" == call.method) {
             fluwxAuthHandler.stopAuthByQRCode(result)
+            return
         }
 
         if (call.method == WeChatPluginMethods.PAY) {

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

@@ -72,7 +72,8 @@ internal class FluwxAuthHandler(private val methodChannel: MethodChannel) {
         val signature = call.argument("signature") ?: ""
 //        val schemeData = call.argument("schemeData")?:""
 
-        qrCodeAuth.auth(appId, scope, nonceStr, timeStamp, signature, qrCodeAuthListener)
+       result.success(qrCodeAuth.auth(appId, scope, nonceStr, timeStamp, signature, qrCodeAuthListener))
+
     }
 
     fun stopAuthByQRCode(result: MethodChannel.Result) {