app/src/main/ets/pages/Index.ets

@@ -69,6 +69,10 @@ struct Index {
   aboutToAppear(): void {
     ScreenUtil.getInstance().initScreenSize();
     BaseLocalStorage.getInstance().init(getContext(this));
+
+    let cal:Calculator = new Calculator();
+    let sum = cal.add(1,2);
+    let info = cal.getInfo();
   }
 
   onPageShow(): void {

hmcalculate/src/main/cpp/CalculateAdaptor.cpp

@@ -11,11 +11,9 @@
 #include <stdint.h>
 
 CalculateAdaptor::CalculateAdaptor() { 
-    _calculate = &Calculate::getInstance();
 }
 
 CalculateAdaptor::CalculateAdaptor(napi_env env, napi_value thisVar) { 
-    _calculate = &Calculate::getInstance();
 }
 
 CalculateAdaptor::~CalculateAdaptor() {
@@ -61,8 +59,8 @@ napi_value calculate_getInfo(napi_env env, napi_callback_info info) {
     
     napi_value js_frame;
     napi_create_object(env, &js_frame);
-    util_set_object_string_property_value(env, js_frame, "name", info2.name.c_str());
-    util_set_object_string_property_value(env, js_frame, "versionName", info2.versionName.c_str());
+    util_set_object_string_property_value(env, js_frame, "name", info2.name);
+    util_set_object_string_property_value(env, js_frame, "versionName", &info2.versionName);
     util_set_object_int32_property_value(env, js_frame, "versionCode", info2.versionCode);
     
     return js_frame;

hmcalculate/src/main/cpp/CalculateAdaptor.h

@@ -15,8 +15,8 @@ class CalculateAdaptor {
 public:
     CalculateAdaptor();
     CalculateAdaptor(napi_env env, napi_value thisVar);
-    virtual ~CalculateAdaptor();
-    Calculate *_calculate = nullptr;
+    ~CalculateAdaptor();
+    Calculate *_calculate;
 };
 
 CalculateAdaptor *util_get_napi_info(napi_env env, napi_callback_info cbinfo, size_t argc, napi_value *argv);