title: Check INTENT internet connection
body: <p>Is there an Android <code>Intent ACTION_XXX</code> that notifies me when an Internet Connection is available?</p>
  
  <p>I want to instantiate a <code>BroadcastReceiver</code> that notifies my application when a user enables Internet Connection (by wifi, by GSM, etc.)</p>
  
  <p>Could anyone help me?</p>