Realm.copyFromRealm 导致从不正确的线程访问 Realm。可能吗？

Question

来自错误线程的领域访问。领域对象只能在创建它们的线程上访问。

我用realm DB做报警服务

因此，为了获取 "time" 数据，我必须访问在其他线程中创建的对象。

所以我像下面的源一样复制了realmlist，但是在这部分出现了illegalstateexception。

还有其他解决方案吗？

Realm realm = Realm.getDefaultInstance();

List<DayWorkType> dayWorkTypesCopied = realm.copyFromRealm(dayWorkTypes);
//FAILED HERE

realm.close();

Answer 1

    Thread thread = new Thread(new Runnable() {
    @Override
    public void run() {
        Realm realm = Realm.getDefaultInstance();
        try {
            List<DayWorkType> dayWorkTypesCopied = realm.copyFromRealm(dayWorkTypes);
        } finally {
            realm.close();
        }
    }
});

thread.start();

Answer 2

在使用 dayWorkTypes 之前，您需要提取它们的 ID 并在来自另一个 Realm 实例的请求中使用它们

//in your first/main thread
Set<String> dayWorkTypeIds = dayWorkTypes.map(d -> d.getId());

...

//in your new thread just query realm
Realm realm = Realm.getDefaultInstance();
RealmResults<DayWorkType> dayWorkTypes2 = realm
        .where(DayWorkType.class)
        .in("id", dayWorkTypeIds.toArray(new String[0]);

//now you can use dayWorkTypes2 as you want in your thread

Realm.copyFromRealm 导致从不正确的线程访问 Realm。可能吗？

Realm.copyFromRealm cause Realm access from incorrect thread. is it possible?

java

android

realm