Java – incorrect thread in Android domain
•
Android
I have two services, one of which is the producer (saving the object to the domain), and the other reads the object from the domain and sends them to the rest Service in the planning task
My exception:
java.lang.IllegalStateException: Realm access from incorrect thread. Realm objects can only be accessed on the thread they were created.
Service 1:
this.scheduler.schedule("*/2 * * * *", new Runnable() {
public void run() {
List<Location> locations = dataStore.getAll(Location.class);
for(Location l : locations) {
try {
serverEndpoint.putLocation(l);
l.removeFromRealm();
} catch (SendingException e) {
Log.i(this.getClass().getName(), "Sending task is active!");
}
}
}
});
Service 2:
private LocationListener locationListener = new android.location.LocationListener() {
@Override
public void onLocationChanged(Location location) {
TLocation transferLocation = new TLocation();
transferLocation.setLat( location.getLatitude() );
transferLocation.setLng(location.getLongitude());
dataStore.save(transferLocation);
}
}
Datastore implementation:
public void save(RealmObject o) {
this.realm.beginTransaction();
this.realm.copyToRealm(o);
this.realm.commitTransaction();
}
public <T extends RealmObject> List<T> getAll(Class<T> type) {
return this.realm.allObjects(type);
}
resolvent:
You should use your own realm instance for each thread:
// Query and use the result in another thread
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
// Get a Realm instance for this thread
Realm realm = Realm.getInstance(context);
...
Documents from realm:
Using a Realm across Threads
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