How would I make an embedded Android OS with just one app?

[kutugondrong]

Sory guys if i repost. I already try to root my os android and learn about xda framework, but i am confusing to make embedded android os with just one aplication. May be some on can help me here.

 

[B. Diddy]

Welcome to Android Central! I don't have that technical knowledge, but it would help others if you mentioned which device you've rooted.