Set value to a realm object

Question

I have following class

public class Student extends RealmObject{
private int studentID;
private String studentName;

// getters and setters here

}

Then I try to set a value to a already created student object

student.setStudentName("Peter");

Then I get following error

java.lang.IllegalStateException: Mutable method call during read transaction.

In order to overcome this I have to do it as follows

Realm realm = Realm.getInstance(this);
realm.beginTransaction();
student.setStudentName("Peter");
realm.commitTransaction();

I don't want to persist this change in the database. How can I just set/change a value to an realm object variable without always persisting it to the database?

Answer 1

If you want to modify the object in a non-persisted manner, you need an unmanaged copy of it.

You can create a copy using realm.copyFromRealm(RealmObject realmObject); method.