问题
What is the difference between clickable and focusable in android?
回答1:
Clickable means that it can be clicked by a pointer device or be tapped by a touch device. Focusable means that it can gain the focus from an input device like a keyboard. Input devices like keyboards cannot decide which view to send its input events to based on the inputs itself, so they send them to the view that has focus.
回答2:
Focusable means ACTION_UP event will occur. It will gain it and it won't release it.
Clickable means ACTION_UP first and ACTION_DOWN at the end. It will gain and release it at the end.
来源：https://stackoverflow.com/questions/14049292/difference-between-focusable-and-clickable