countdowntimer

问题 I spent my summer learning how to code and building my first app (in android studio). Therefore I am not an expert coder. This week I encountered a problem. Basically, I am developing a quiz app and when the user gets the answer wrong he have to wait 5 min. The thing is that when the countdowntimer starts and the user closes the app (by closing the app I mean destroy it and not just push the home button) the countdowntimer stops. I am wondering how I can manage to keep the timer running even

问题 Code: public class SMH extends Activity { public void onCreate(Bundle b) { super.onCreate(b); setContentView(R.layout.main); TextView tv = (TextView) findViewById(R.id.tv); new CountDownTimer(10000, 2000) { public void onTick(long m) { long sec = m/1000+1; tv.append(sec+\" seconds remain\\n\"); } public void onFinish() { tv.append(\"Done!\"); } }.start(); } Output: 10 seconds remain 8 seconds remain 6 seconds remain 4 seconds remain Done! Problem: How do I get it to show \" 2 seconds remain \

问题 I have a listview (with a custom list adapter), I need to display a countdown on every row. For example, if my list contains 4 items, I will have 4 rows. At this point, I need to handle 4 different countdowns (one for each row) because time is different. So far, I\'m handling it the following way : in the Custom List Adapter, inside getView() method I create a new CountDownTimer and display remaining time inside TextView. But the problem is that it slows the activity a lot, I can\'t even

问题 I\'m confused. After stumbling upon this thread, I tried to figure out how to format a countdown timer that had the format hh:mm:ss . Here\'s my attempt - //hh:mm:ss String.format(\"%02d:%02d:%02d\", TimeUnit.MILLISECONDS.toHours(millis), TimeUnit.MILLISECONDS.toMinutes(millis) - TimeUnit.MINUTES.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)), TimeUnit.MILLISECONDS.toSeconds(millis) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis))); So, when I try a value like 3600000ms

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 3 years ago . Just wanted to ask how to create the simplest possible countdown timer. There\'ll be a sentence on the site saying: \"Registration closes in 05:00 minutes!\" So, what I want to do is to create a simple js countdown timer that goes from \"05:00\" to \"00:00\" and then resets to \