Creating wifi scanning as a android service

Currently writing a wifi positioning program an开发者_如何学God i need to scan the surrounding for active APs so as to calculate the current position of the user. However, user can set the time (0-10 secs) at which the app initiate WiFi scanning (for example, 5 sec, the program would initiate WiFi scanning every 5 secs). And from what is stated in [here] (http://developer.android.com/reference/android/app/Service.html#WhatIsAService) and it says "application component representing either an application's desire to perform a longer-running operation while not interacting with the user or to supply functionality for other applications to use.". So was wondering whether it is best to create a Service in my program then running a TimerTask in this case?

In this case, i would use Service and TimerTask like here