fix: string delete error

Author: huizzzhou

dart_native/android/src/main/jni/dart_native.cpp

@@ -240,10 +240,6 @@ void *invokeNativeMethodNeo(void *classPtr, char *methodName, void **args, char
             jstring javaString = (jstring)curEnv->CallObjectMethodA(object, method, argValues);
             jboolean isCopy = JNI_FALSE;
             nativeInvokeResult = (char *) curEnv->GetStringUTFChars(javaString, &isCopy);
-            if (isCopy == JNI_TRUE) {
-              NSLog("DeleteLocalRef");
-              curEnv->DeleteLocalRef(javaString);
-            }
         }
         else {
             jobject obj = curEnv->NewGlobalRef(curEnv->CallObjectMethodA(object, method, argValues));

dart_native/example/lib/android/unit_test.dart

@@ -96,11 +96,6 @@ testAndroid(RuntimeStub stub) {
     print("item $item");
   }
 
-  // List list = stub.getStringList(["w", "q", "e"]);
-  // for (String item in list) {
-  //   print("item $item");
-  // }
-
   list = stub.getCycleList([[1, 2, 3], [4, 5, 6], [7, 8, 9]]);
   for (List items in list) {
     for (int item in items) {