我在从服务器读取数据后使用 Realm 来存储数据，但是当我尝试将其存储在 Realm 中时，我得到了“java.lang.IllegalArgumentException: 'value' is not a valid managed object”
这是我在 Realm 中存储数据的方法代码
public void addOrdersToLocalDB(Order order,List<Product> products) {
realmAsyncTask = myRealm.executeTransactionAsync(new Realm.Transaction() {
@Override
public void execute(Realm realm) {
Order localOrder = realm.createObject(Order.class, order.getId());
localOrder.setName(order.getName());
localOrder.setTimestamp(order.getTimestamp());
localOrder.setDate(order.getDate());
localOrder.setCost(order.getCost());
localOrder.setProductNums(order.getProductNums());
localOrder.setTime(order.getTime());
Log.d("orders_data", "realm order : " + order.getName());
RealmList<Product> localProducts = new RealmList<>();
for (Product product : products){
Log.d("orders_data", "realm product : " + product.getName());
Product localProduct = realm.createObject(Product.class, product.getId());
localProduct.setName(product.getName());
localProduct.setBarCode(product.getBarCode());
localProduct.setCurrentQuantity(product.getCurrentQuantity());
localProduct.setStatus(product.getStatus());
localProduct.setOldUnitPrice(product.getOldUnitPrice());
localProduct.setImage(product.getImage());
localProduct.setNeededQuantity(product.getNeededQuantity());
localProduct.setTotalPrice(product.getTotalPrice());
localProduct.setDescription(product.getDescription());
localProduct.setUnitPrice(product.getUnitPrice());
localProduct.setTimeStamp(product.getTimeStamp());
localProducts.add(product);
}
if (localProducts.size() == products.size()){
Log.d("orders_data", "realm products size : " + String.valueOf(localProducts.size()));
localOrder.setProducts(localProducts);
}
}
}, new Realm.Transaction.OnSuccess() {
@Override
public void onSuccess() {
HelperMethods.displayToastMsg("data added successfully to realm", HomeActivity.this);
curvesLoader.setVisibility(View.GONE);
//setupRecyclerView();
}
}, new Realm.Transaction.OnError() {
@Override
public void onError(Throwable error) {
curvesLoader.setVisibility(View.GONE);
HelperMethods.displayToastMsg("data not added to realm, there was a problem : " + error, HomeActivity.this);
Log.d("myrealm", error.toString());
}
});
}
我搜索了那个错误并检查了这个问题 here仍然出现错误希望有人能提供帮助吗？
同样，当我使用其他方法处理静态数据时，就像下一个代码一样，它工作正常
Order order = realm.createObject(Order.class, "1");
order.setName("طلب 1");
order.setTimestamp("٢٠١٩.٠١.١٦.١١.٢٤.١٦");
order.setDate("٢٠١٩.٠١.١٦");
order.setCost("1050");
order.setProductNums("2");
order.setTime("١١.٣٧.٢٦");
RealmList<Product> products = new RealmList<>();
Double unitPrice = 10.0;
int neededQuantity = 5;
int currentQuantity = 0;
Product product = realm.createObject(Product.class, "1");
product.setName("مناديل فاين");
product.setBarCode("6251001214468");
product.setCurrentQuantity("0");
product.setStatus(1);
product.setOldUnitPrice(String.valueOf(unitPrice));
product.setImage("https://www.albawaba.com/sites/default/files/im/pr_new/FINE_NEW_PACK.jpg");
product.setNeededQuantity(String.valueOf(neededQuantity - currentQuantity));
product.setTotalPrice(String.valueOf(unitPrice * neededQuantity));
product.setDescription("الوزن : 100 منديل / العدد : 36 علبة");
product.setUnitPrice(String.valueOf(unitPrice));
product.setTimeStamp("٢٠١٩.٠١.١٦.١١.٣٧.٢٦");
products.add(product);
unitPrice = 7.5;
neededQuantity = 10;
currentQuantity = 0;
Product product2 = realm.createObject(Product.class, "2");
product2.setName("بيبسى 1 لتر");
product2.setBarCode("6223001360766");
product2.setStatus(1);
product2.setOldUnitPrice(String.valueOf(unitPrice));
product2.setCurrentQuantity("0");
product2.setImage("https://grocety.com/media/catalog/product/cache/2/small_image/228x/9df78eab33525d08d6e5fb8d27136e95/1/2/120-370x310.jpg");
product2.setNeededQuantity(String.valueOf(neededQuantity - currentQuantity));
product2.setTotalPrice(String.valueOf(unitPrice * neededQuantity));
product2.setUnitPrice(String.valueOf(unitPrice));
product2.setDescription("الحجم :1 لتر / العدد : 30");
product2.setCurrentQuantity(String.valueOf(currentQuantity));
product2.setTimeStamp("٢٠١٩.٠١.١٦.١١.٢٤.١٦");
products.add(product2);
order.setProducts(products);
最佳答案
将 localProducts.add(product) 替换为 localProducts.add(localProduct) ，你初始化了 localProduct 但忘记将他添加到列表中，而是添加不受 Realm 管理的产品。
关于java.lang.IllegalArgumentException : 'value' is not a valid managed object with realm 异常，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/54787084/