Cross Reference: /development/samples/training/notify-user/src/com/example/android/pingme

`Name`	`Date`	`Size`
Up to higher level directory
`CommonConstants.java`	23-Apr-2015	`1.6K`
`MainActivity.java`	23-Apr-2015	`2.5K`
`PingService.java`	23-Apr-2015	`6.1K`
`ResultActivity.java`	23-Apr-2015	`1.7K`