Realm Swift callback function

Question

I use swift3 and Realm 2.3.

And I need callback after transaction is finished.

for example, I have a code as below, how can I get call back after a realm data transaction is finished ?

DispatchQueue.main.async {

     try! self.realm.write {
          self.realm.add(friendInfo, update: true)
     }

}

Answer 1

Transactions are executed synchronously. So you can just perform the code right after you execute the transaction.

DispatchQueue.main.async {
    try! self.realm.write {
        self.realm.add(friendInfo, update: true)
    }

    callbackFunction()
}