如何使一个按钮在电晕 sdk 中只按下一次而不是重复？

Question

我正在制作一个问题应用程序，当您选择正确答案按钮时，分数会添加 +1，选择错误答案时会添加 -1， 我怎样才能使按钮能够被按下一次，但之后就不能再按下？因为如果你按住按钮，分数会不断增加！

这是按钮 1：

local widget = require( "widget" )


local function handleButtonEvent( event )

    if ( "ended" == event.phase ) then 
    minusScore()

        print( "Button was pressed and released" )
    end
end 

local button1 = widget.newButton
{
    width = 350,
    height = 360,
    left= 30,
    top= 220,
    defaultFile = "speakers.png",
    overFile = "wrong.png",
    --label = "button",
    onEvent = handleButtonEvent
}

这是分数函数..也许有一个分数加1然后停止的方法：

--------分数------------------------

local score = 0
local scoreTxt = display.newText( "0", 0, 0, "Helvetica", 40 ) 
scoreTxt:setReferencePoint(display.TopLeftReferencePoint)
scoreTxt.x = display.screenOriginX + 700
scoreTxt.y = display.screenOriginY + 37
scoreTxt:setTextColor(2,2,2)
---------------------score added 10-----------------------------
function updateScore()
    score = score + 1
    _G.score = score
    scoreTxt.text = string.format(" %d", score)
end
local scoretimer = timer.performWithDelay(1, updateScore,1)
---------------------score minus 1-----------------------------
 function minusScore()
    score = score - 1
    _G.score = score
   scoreTxt.text = string.format(" %d", score)
end
local scoretimer = timer.performWithDelay(1, minusScore,1)

Answer 1

你可以这样做：

local minusButtonPressed = false

local function handleButtonEvent( event )
    if ( ( "ended" == event.phase ) and (minusButtonPressed == false) )  then 
        minusScore()
        print( "Button was pressed and released" )
        --disable the button
        minusButtonPressed = true
    end
 end