title: Use cases where PendingIntent is used
body: <p>I am trying to see how PendingIntents are useful. Can you provide examples of apps where PendingIntents are used?</p>
  
  <p>I am not looking for examples of code, but real life use cases where PendingIntents are used, with a bit of explaination.</p>
  
  <p>Thanks,</p>