类型 数字 事件 tap 修订 版本 2024.3703 关键词 tap, numTaps 另请参阅 system.setTapDelay() 
屏幕上的点击次数。
local function tapListener( event )
    print( event.numTaps )
end
Runtime:addEventListener( "tap", tapListener )
local object = display.newImage( "image.png" )
function object:tap( event )
    print( event.numTaps )
end
object:addEventListener( "tap", object )
local object = display.newImage( "image.png" )
local function onObjectTap( self, event )
    print( event.numTaps )
end
object.tap = onObjectTap
object:addEventListener( "tap", object )