Method GetJavaField

test-app/runtime/src/main/cpp/FieldAccessor.cpp:11–186

using namespace tns;

Local<Value> FieldAccessor::GetJavaField(Isolate* isolate, const Local<Object>& target, FieldCallbackData* fieldData) {
    JEnv env;

    EscapableHandleScope handleScope(isolate);
    auto runtime = Runtime::GetRuntime(isolate);
    auto objectManager = runtime->GetObjectManager();

    Local<Value> fieldResult;

    JniLocalRef targetJavaObject;

    auto &fieldMetadata = fieldData->metadata;

    const auto& fieldTypeName = fieldMetadata.getSig();
    auto isStatic = fieldMetadata.isStatic;

    auto isPrimitiveType = fieldTypeName.size() == 1;
    auto isFieldArray = fieldTypeName[0] == '[';

    if (fieldData->fid == nullptr) {
        auto fieldJniSig = isPrimitiveType
                           ? fieldTypeName
                           :
                           (isFieldArray
                            ? fieldTypeName
                            :
                            ("L" + fieldTypeName + ";"));

        if (isStatic) {
            fieldData->clazz = env.FindClass(fieldMetadata.getDeclaringType());
            fieldData->fid = env.GetStaticFieldID(fieldData->clazz, fieldMetadata.name, fieldJniSig);
        } else {
            fieldData->clazz = env.FindClass(fieldMetadata.getDeclaringType());
            fieldData->fid = env.GetFieldID(fieldData->clazz, fieldMetadata.name, fieldJniSig);
        }
    }

    if (!isStatic) {
        targetJavaObject = objectManager->GetJavaObjectByJsObject(target);

        if (targetJavaObject.IsNull()) {
            stringstream ss;
            ss << "Cannot access property '" << fieldMetadata.name.c_str() << "' because there is no corresponding Java object";
            throw NativeScriptException(ss.str());
        }
    }

    auto fieldId = fieldData->fid;
    auto clazz = fieldData->clazz;

    if (isPrimitiveType) {
        switch (fieldTypeName[0]) {
        case 'Z': { //bool
            jboolean result;
            if (isStatic) {
                result = env.GetStaticBooleanField(clazz, fieldId);
            } else {
                result = env.GetBooleanField(targetJavaObject, fieldId);