title: How to create a Digital Clock on Android?
body: <p>I've been trying to write a simple Digital Clock app for Android. First I used the built in Digital Clock and tried to omit the seconds display, but I couldn't. I wanted clock's seconds to trigger some lines of code I have. </p>
  
  <p>Then I start to develop simple application to put Digits on screen but I don't know how to trigger the display in most efficient way. Anybody can give me a simple start, where to look and what functions to use ? How can I execute few lines of code within every second? I tried the example at <a href="https://stackoverflow.com/questions/2271131/display-current-time-and-date-in-android-application">Display the current time and date in an Android application</a> but it wasn't successful. There were no libraries by the name CountDownRunner to import. </p>
  
  <p>I am new to android development, however I have fairly good experience in Java, C,C++.</p>
  
  <p>Thank you</p>