fix result of launch mini program

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

 package com.jarvan.fluwx.handler
 
 import android.util.Log
+import com.jarvan.fluwx.constant.WechatPluginKeys
 import io.flutter.plugin.common.MethodCall
 import io.flutter.plugin.common.MethodChannel
 import com.tencent.mm.opensdk.modelbiz.WXLaunchMiniProgram
@@ -19,6 +20,10 @@ internal class FluwxLaunchMiniProgramHandler {
             2-> WXLaunchMiniProgram.Req.MINIPROGRAM_TYPE_PREVIEW
             else-> WXLaunchMiniProgram.Req.MINIPTOGRAM_TYPE_RELEASE
         }// 可选打开 开发版，体验版和正式版
-        result.success(WXAPiHandler.wxApi?.sendReq(req))
+        val done = WXAPiHandler.wxApi?.sendReq(req)
+        result.success(mapOf(
+                WechatPluginKeys.PLATFORM to WechatPluginKeys.ANDROID,
+                WechatPluginKeys.RESULT to done
+        ))
     }
 }
\ No newline at end of file

example/lib/main.dart

@@ -50,7 +50,8 @@ class _MyAppState extends State<MyApp> {
             title: const Text('Plugin example app'),
           ),
           body: ShareSelectorPage()),
-    );
+    )
+    ;
   }
 }