Je connais le onDataChange()
dans Firebase pour laisser dire addListenerForSingleValueEvent
fonctionne sur Android Main Ui thread.Où exécutera-t-on Firebase onDataChange() dans cet exemple?
Je voulais comprendre ce qui se passera si je lance ce code à l'intérieur du ExecutorService
:
runInBackground(new Runnable() {
@Override
public void run() {
ref.child("SOME_KEY")
.addListenerForSingleValueEvent
(new ValueEventListener() {
@Override
public void onDataChange(final DataSnapshot dataSnapshot) {
//.. do some work on Ui Thread or not??
}
@Override
public void onCancelled(DatabaseError databaseError) {
notificationRunning = false;
}
}
);
}
});
}
Est-ce que le OnDataChange() fonctionnent toujours sur le Main Ui Enfiler Android? Et here's le coureur ExecutorService
/**
* Submits request to be executed in background.
* Threads submitted will be executed synchronously.
*
* @param runnable
*/
private void runInBackground(final Runnable runnable) {
mBackgroundExecutor.submit(new Runnable() {
@Override
public void run() {
try {
runnable.run();
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
Et les ExecutorService
mBackgroundExecutor = Executors
.newSingleThreadExecutor(new ThreadFactory() {
@Override
public Thread newThread(Runnable runnable) {
Thread thread = new Thread(runnable,
"Background executor service for OneSignal");
thread.setPriority(Thread.MIN_PRIORITY);
thread.setDaemon(true);
return thread;
}
});