Life cycle of an application / activity and broadcast
<p>An Android application is usually composed of :
- an main activity which is the entry point
- other activites
- broadcasts
- services</p>

<p>when I start my application :
- the main activity is loaded in memory
- my main activity starts other activities using startActivity()
- a broadcast is loaded in memory
- a service is loaded in memory</p>

<p>The question is : When I press the back button of my cell phone what happens exactly for all the components of my application :
- I guess the main activity is destroyed
- what about other activites started in my application
- is the broadcast still alive ?</p>

<p>Regards</p>
