timer

问题 Is it possible using standard C++ in Linux to get informed when a specified date/time is reached by the system time (assuming my process is up of course)? I could just set a timer to the time I need to wait, but what happens if the user changes the system time? Can I get informed by the system that the user changed the system time to reset my timers? 回答1: The Linux kernel has such system calls, although, they are not integrated into the libc API. You can create a timer, get a file descriptor

问题 How is this possible? I have a timer that is called if have no network connection,as in method down: public void Foo() { for (int i = 0, count = MailList.CheckedItems.Count; i < count; i++) { /* Check for network available connection in computer public bool HasConnection() { return System.Net.NetworkInformation.NetworkInterface.GetIsNetworkAvailable(); } */ if (!net.HasConnection()) { SearchNetworkConnection.Start(); //start the timer } } } and The _Tick method of Timer : private void

问题 Get the compile error message from xCode with Swift language: "extra argument userinfo in call". the question is how to use userInfo data from timer to argument "userInfo" in notification center. func onSetAudioWithTrackIndex(CurrentTrackIndex:Int, urlAudio: String){ ........ //try to pass currentTrackIndex data to timerfire playTimeClock = NSTimer.scheduledTimerWithTimeInterval(0.4, target: self, selector: "onSetPlayProgressTime:", userInfo: CurrentTrackIndex, repeats: true) } //Timerfire

问题 This question already has answers here : How to create a circular progress indicator for a count down timer (2 answers) Closed 3 years ago . How do I code a simple timer countdown from MINUTES say for example 5 minute countdown? Like the timer that apple created. Is there a way to download and see the xcode project for apple apps? 回答1: Look into NSTimer as a simple way to do this. May not be the most accurate but is relatively simple. The NSTimer calls the function "update" every second

问题 I'm working on a scheduling system in Java that sends out reminders based on a startDate , endDate and occurrence (hourly, daily, weekly, monthly, Mondays, etc). Originally I was using Timer and TimerTask classes to schedule the reminders: Timer timer = new Timer(); timer.scheduleAtFixedRate(reminder, firstDate, period); I recently switched to ScheduledExecutorService so I could have more control on cancelling events. The ScheduledExecutorService is working well for recurring reminders,

问题 I'm working on a scheduling system in Java that sends out reminders based on a startDate , endDate and occurrence (hourly, daily, weekly, monthly, Mondays, etc). Originally I was using Timer and TimerTask classes to schedule the reminders: Timer timer = new Timer(); timer.scheduleAtFixedRate(reminder, firstDate, period); I recently switched to ScheduledExecutorService so I could have more control on cancelling events. The ScheduledExecutorService is working well for recurring reminders,

问题 I would like to run a function at 30 mins interval. Each time the function run, it will take a different input. Let's say I want to run this 100 times. The function is lookupweather and the input is location1, location2, location3,..., location100 I've tried: for a = 1:100 t = timer; t.StartDelay = 30*60*(a-1) t.TimerFcn = @(scr, event) run('lookupweather'); start(t) end The issue here is that I cannot find away to input the location information. If I tried something lookupweather(location1),

问题 I'm a learn-by-example C# coder who isn't very advanced, which is why this problem is completely stumping me regardless of the amount of information on the internet. I'm essentially creating a program that is, on a timer, repeatedly polling a website to get some information. During this process, a WebBrowser control is created to navigate to the information (needed for authentication). The program runs this series of events at startup, then using a System.Timers.Timer set to every 10 minutes

问题 How can I remove the background of a frame animation (or set it to be transparent )? When I set the background colour in the xml layout file to be transparent, it turns up black when running it. When I setBackgroundColor(0); in the Java code I get the following exception : java.lang.ClassCastException: android.graphics.drawable.ColorDrawable cannot be cast to android.graphics.drawable.AnimationDrawable /res/layout/dialog_loading.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns

问题 I have a CountDown timer that counts down from 10000ms to 0ms in increments of 1 second each to make a button clickable after 10 seconds. Although the timer is accurate and does what the code says, I would like to change the way the seconds are expressed but I don't know how. java: void startTimer() { cTimer = new CountDownTimer(10000, 1000) { public void onTick(long millisUntilFinished) { c.setText("Please wait " + millisUntilFinished/1000 + " seconds"); thx.setText(millisUntilFinished/1000