How to add preference in setting in android

Currently I am busy with designing keyboard maximum functionality of the keyboard has been completed at that time i am facing a problem regard setting of this key board like Speed of typing, spell checking, suggestion box and other think i know this is control by Preference. But i don't know about how to add preference in android setting. Means user control this keyboard setting by these following step.

Settings >Language and Keyboard >My Keyboard name > Setting of this Keyboard.

Can any one told me hoe can it possible th开发者_如何学Goanks in advance.

You will have to create your own custom firmware.

Perhaps this question and answer covers what you want to do?