fix bugs due to NPE

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

@@ -48,16 +48,20 @@ object FluwxResponseHandler {
     }
 
     private fun handleLaunchMiniProgramResponse(response: WXLaunchMiniProgram.Resp) {
-        val result = mapOf(
+        val result = mutableMapOf(
                 errStr to response.errStr,
                 WechatPluginKeys.TRANSACTION to response.transaction,
                 type to response.type,
                 errCode to response.errCode,
                 openId to response.openId,
-                "extMsg" to response.extMsg,
                 WechatPluginKeys.PLATFORM to WechatPluginKeys.ANDROID
         )
 
+        response.extMsg?.let {
+//            "extMsg" to response.extMsg,
+            result["extMsg"] = response.extMsg
+        }
+
         channel?.invokeMethod(WeChatPluginMethods.WE_CHAT_LAUNCHMINIPROGRAM_RESPONSE, result)
     }
 

example/lib/launch_mini_program_page.dart

@@ -16,7 +16,7 @@ class _LaunchMiniProgramPageState extends State<LaunchMiniProgramPage> {
     super.initState();
     fluwx.responseFromLaunchMiniProgram.listen((data) {
       setState(() {
-        _result = "${data.extMsg}";
+        _result = "${data.errStr}";
       });
     });
 

ios/Classes/wechat/FluwxResponseHandler.m

@@ -117,17 +117,28 @@ FlutterMethodChannel *fluwxMethodChannel = nil;
         }
 
 
+
         WXLaunchMiniProgramResp *miniProgramResp = (WXLaunchMiniProgramResp *) resp;
 
 
-        NSDictionary *result = @{
+        NSDictionary *commonResult = @{
                 description: miniProgramResp.description == nil ?@"":miniProgramResp.description,
                 errStr: miniProgramResp.errStr == nil ?@"":miniProgramResp.errStr,
                 errCode: @(miniProgramResp.errCode),
                 type: miniProgramResp.type == nil ?@1:@(miniProgramResp.type),
                 fluwxKeyPlatform: fluwxKeyIOS,
-                @"extMsg":miniProgramResp.extMsg
+
         };
+
+        NSMutableDictionary *result = [NSMutableDictionary dictionaryWithDictionary:commonResult];
+        if(miniProgramResp.extMsg != nil){
+            result[@"extMsg"] = miniProgramResp.extMsg;
+        }
+        
+
+//        @"extMsg":miniProgramResp.extMsg == nil?@"":miniProgramResp.extMsg
+
+
         [fluwxMethodChannel invokeMethod:@"onLaunchMiniProgramResponse" arguments:result];
 
     } else if ([resp isKindOfClass:[WXInvoiceAuthInsertResp class]]) {