Questions about the focus and onfocuschangelistener

Brother recently in contact with top box software, find the focus is really bad out, please remind the great God who gave it.

1.onfocuschangelistener can only bind one control one control it? For example, I have five ImageView in linearlayout, to give this 5 imageView bind each listener it?
2.android specific focus moves according to what the law, or the great God who has a collection of what post, under reference can understand it for the younger.

Thank you, thank ~ ~

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No man?
Their top
Reply:
Seeking help ah, seeking help - where big God?