corona: sprite listener

sprite-listener-function.lua

local function mySpriteListener( event )
	if ( event.phase == "ended" ) then
		local thisSprite = event.target  --"event.target" references the sprite
		thisSprite:setSequence( "fastRun" )  --switch to "fastRun" sequence
		thisSprite:play()  --play the new sequence; it won't play automatically!
	end
end

animation:addEventListener( "sprite", mySpriteListener )  --add a sprite listener to your sprite

Event phases:

began = The sprite has started playing.
ended = The sprite has finished playing.
bounce = The sprite has bounced from forward to backward while playing.
loop = The sprite has looped to the beginning of the sequence.
next = The sprite has played a subsequent frame that’s not one of the above phases.