Android how to perform certain tasks on headset button click?

Alright, so I'm writing an app to make an external headset perform certain functions. I'm trying to replicate functionality similar to this guy:

https://market.android.com/details?id=com.kober.headset

The list of things it can make the headset button click do is: play/pause, previous track, redial last phone #, launch specified app, etc. I don't know how to do this stuff though! Sort of lost with how to get started here. I'm also kind of confused how the overall program flow should work.

Right now I can register button clicks via 开发者_Go百科a broastcast receiver and correctly and pass that number (single/double/triple click) to a service to run in the background. I'm using a background service so the user doesn't need to be in the app to use the functionality.

Am I on the right track? How do I go about making clicks play/pause music, next/previous track, etc? Are there certain intents I should be using?

Cheers.

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Am I on the right track?

Be sure to stop your service when it is no longer needed (e.g., after you have determined the clicks and performed the operation). Otherwise, I see no problems there.

How do I go about making clicks play/pause music, next/previous track, etc?

First, write a music player app. There are no documented and supported APIs to "play/pause music, next/previous track, etc" for most of the several thousand music players out there.