ios - 让 for 循环等待队列完成后再继续

Question

我试图让我的循环等到定时队列完成后再循环。我怎样才能做到这一点？

for retries in 0...3 {
    do {
        let triggerTime = DispatchTime.now() + .milliseconds(((2^(randomNumber*retries)*1000) + randomNumber))

        DispatchQueue.main.asyncAfter(deadline: triggerTime, execute: {
            //Don't loop until this is executed
            self.socket.connect()
        })
    }
}

Answer 1

您应该使套接字调用同步，但使整个连接过程(调用循环)异步。