title: Android AsyncTask called "multiple" times
body: <p>i'm fairly new to android programming. I have a main activity that gets data from a DB through a service handler (url). I want to insert data as well, but on a different activity, and i want my main activity to be up to date each time its been called (onresume(),onrestart()).
  I've found this on the Android API reference about AsyncTask:
  <em>The task can be executed only once (an exception will be thrown if a second execution is attempted.)</em>
  Does that mean that i cannot call the AsyncTask whenever the activity resumes, or that i cannot have multiple "instances" of the AsyncTask running at the same time?</p>