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copied!<p>I don't know exactly what you want, but this is not the way to do it. It seems you're mixing up a lot of things. </p> <p>The tutorial itself is a bad example to my opinion, keeping a static reference to an activity in a service seems to me bad practice; you would use binding to bind your service to an activity, or if you don't want to you can pass Intents around.</p> <p>As far as I know instantiating a service like you do and setting a listener on it like that doesn't work. You get an error in the startService() call because the service instance isn't a class obviously; you should use <code>TimerService.class</code> instead. In your service you have an onStart(); <a href="http://developer.android.com/reference/android/app/Service.html#onStart%28android.content.Intent,%20int%29" rel="nofollow">onStart() is a deprecated function</a>, you should use onStartCommand() instead.</p> <p>Now, if you have an activity in which you want to show a clock you don't need nor want the service to update its UI directly of course, but if you'd want the service to calculate a new clock tick for you, just call startService(); As long as your service is alive, sending a new start service intent will just call the onStartCommand() with the intent you're sending along. </p> <p>If your clock is in an activity, setup a broadcast receiver inside your activity that and let your service broadcast an intent that can be received by the broadcast receiver you setup, with your new clock value passed along.</p>

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