Label not being updated

Question

I am trying to update a label to indicate status, but it is not being refreshed/shown as expected

func setStatusText(status: String) {
    statusText.stringValue = status;
}

func doSomething() {
    setStatusText(status: "Activating license"); // This is never shown
    var rc = PerformAction()

    if (rc == 0) {
        setStatusText(status: "\(action) succeeded") // Correctly displayed
    } else {
        setStatusText(status: "\(action) failed") // Correctly displayed
    }

The status update before the action is never being shown, but the status set right after the action is correctly displayed. What do I do to be sure the first status is shown?

Edited: I tried something else to try to isolate it. I added a button press, which will set text, sleep, and then set text again. I never see "first" in the status.

@IBAction func TestSettingText(_ sender: Any) {
    self.statusText.stringValue = "first";
    sleep(15)
    self.statusText.stringValue = "second";
}

Have you tried using the debugger, and putting a breakpoint on the `var rc =` line and the following line. Make sure that the label updates before continuing to the following line — Matt Bart, Jul 23 '19 at 20:55
Yes, tried in the debugger and the status isn't updated until after that line — user2957533, Jul 23 '19 at 21:59
Possible duplicate of [Swift: Trying to update NSTextField in a loop, but it only gets the last value](https://stackoverflow.com/questions/24230517/swift-trying-to-update-nstextfield-in-a-loop-but-it-only-gets-the-last-value) — Willeke, Jul 23 '19 at 22:19
I do not think this is a duplicate of that, although there may be some similarities. — user2957533, Jul 23 '19 at 23:02

score 0 · Answer 1 · answered Jul 23 '19 at 20:31

0

I don't know what exactly PerformAction does but it seems like it finishes quickly so you just can't see the Activating license status. It is there but only for a very brief moment and instantly changed to the next status

answered Jul 23 '19 at 20:31

Andrey Chernukha

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There are some cases where it takes a bit of time and even in those cases I am never seeing the first label update, or if I step through debugger. – user2957533 Jul 23 '19 at 20:35
what if you remove everything after PerformAction? – Andrey Chernukha Jul 23 '19 at 20:41
In that case it does show the first/original label status. So it appears that they are both set at the same time, so the second overwrites the first...but again it is only happening after the action is done – user2957533 Jul 23 '19 at 20:56
what if you remove PerformAction() call? I'm pretty sure the status will be there – Andrey Chernukha Jul 23 '19 at 20:58

Label not being updated

1 Answers1