title: android service persistent
body: <p>In my application I implemented a remote service that exchange data with a webserver each 20 minutes and modify the value of some object in MyApplication Class that extends Application.</p>
  
  <p>After 12 or 15 hour android kill MyApplication class and/or my Service.
  I tried to implement the </p>
  
  <p>android:alwaysRetainTaskState="true"</p>
  
  <p>without results. Some could explain to me how to make a service or an application persistent in android? I see more application that stay in background for days without problems, but I don't know how to do that.</p>
  
  <p>I know that android could kill each application if it needs some free memory but my system has 180mb of free memory and no application running because I use it for testing my programs.</p>