timer

问题 Every 5 seconds, I want to call my webservice and get text (not images), then display it in my ImageAdapter. What would be the best way to accomplish this? 回答1: It depends if you want to use a different thread or not. Do you want the user to be able to interact with the application on the UI Thread while the images are downloading? If so, then I would definitely use an AsyncTask with a small ProgressBar ( style="@android:style/Widget.ProgressBar.Small" ) If you don't care about threading then

问题 I'm figuring what a timer implementation to use if you need to schedule tons of (non blocking) tasks as fast as possible inside jvm on one machine. I've studied ScheduledThreadPoolExecutor and HashedWheelTimer sources (+wheel timer general docs) and here are basic differences (N - number of all outstanding scheduled tasks so far, C - wheel size): ScheduledThreadPoolExecutor O(log N) for adding new task O(1) per each timer tick (but tick per each task, so N overall) O(log N) cancelling the

问题 I have a progress timer bar in jQuery - here is an example http://jsfiddle.net/6h74c/ If I have time values in milliseconds, (600000 = 10 minutes, 300000 = 5 minutes, etc), how can I make the bar increment for that period of time? In the jsfiddle link, I'm trying to set the progress bar to increase for 835000ms. However, the setTimeout() determines how often the bar will increase and it is also basing it off of width percentage, which doesn't seem accurate - should I be doing this differently

问题 Probably a silly question for someone with ejb experience... I want to read and change the minute parameter dynamically for one of my EJB beans that uses the Java EE scheduler via the @Schedule annotation. Anyone know how to do this at runtime as opposed to hardcoding it in the class like below? If i were to do it programatically could i still use the @Schedule annotation? @Schedule(dayOfWeek = "0-5", hour = "0/2", minute = "0/20", timezone = "America/Los_Angeles") private void checkInventory

问题 Probably a silly question for someone with ejb experience... I want to read and change the minute parameter dynamically for one of my EJB beans that uses the Java EE scheduler via the @Schedule annotation. Anyone know how to do this at runtime as opposed to hardcoding it in the class like below? If i were to do it programatically could i still use the @Schedule annotation? @Schedule(dayOfWeek = "0-5", hour = "0/2", minute = "0/20", timezone = "America/Los_Angeles") private void checkInventory

问题 I do a fade in div that is not displayed when I load the page: $('#overlay').fadeIn('fast'); $('#box').fadeIn('slow'); I would do this instructions after x seconds, doing a fadeOut of the div: $('#overlay').fadeOut('fast'); $('#box').hide(); How can I do it? Actually fadeOut is done on button click. The script is here: http://clouderize.it/cookie-localstorage/a.php The div that appear when I click on another image will disappear after x seconds. Thanks a lot. 回答1: The .delay method is purpose

问题 I need a timer to execute callbacks with relatively low resolution. What's the best way to implement such C++ timer class in Linux? Are there any libraries I could use? 回答1: If you're writing within a framework (Glib, Qt, Wx, ...), you'll already have an event loop with timed callback functionalities. I'll assume that's not the case. If you're writing your own event loop, you can use the gettimeofday / select pair ( struct timeval , microsecond precision) or the clock_gettime / nanosleep pair

问题 I was facing the struggle of making a timer app, so I thought that now that I solved it I could help others who face the problem. So basically this app counts down to a specific date from the current time. As stack overflow allows a Q and A format I hope that can help you. See the comments for explanations. 回答1: Here is the solution of how I managed to create a countdown timer to a specific NSDate, for SO allows Q and A Style Answers. // here we set the current date let date = NSDate() let

问题 I have an app that shows a disclaimer at the beginning of the program. I want a button to remain invisible for a set amount of time, and then become visible. I set up a thread that sleeps for 5 seconds, and then tries to make the button visible. However ,I get this error when I execute my code: 08-02 21:34:07.868: ERROR/AndroidRuntime(1401): android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views. How can I count 5

问题 I've been using an android countdown timer sample to create a countdown to a certain date. Time TimerSet = new Time(); TimerSet.set(20, 8, 2012); //day month year TimerSet.normalize(true); long millis = TimerSet.toMillis(true); Time TimeNow = new Time(); TimeNow.setToNow(); // set the date to Current Time TimeNow.normalize(true); long millis2 = TimeNow.toMillis(true); long millisset = millis - millis2; //subtract current from future to set the time remaining final int smillis = (int) (millis)