Question

我需要显示图像，以便模仿各种＆＃34;家庭＆＃34;上的iOS应用图标的布局。页面。我编写了代码来显示各种图像;但是，我无法弄清楚如何在点击事件中返回与每个单独图像相对应的值。

到目前为止，这是我的代码：

    plates = {
"fat-burning-foods.jpg",
"fresh_food.jpg",
"fat-burning-foods.jpg",
"star.png",
"fat-burning-foods.jpg",
"star.png",
"fat-burning-foods.jpg",
"fresh_food.jpg",
"fat-burning-foods.jpg",
"star.png",
"fat-burning-foods.jpg",
"fresh_food.jpg",
"fat-burning-foods.jpg",
"star.png"
}


-- The PlateId will have corosponding indexes with the plates array. It will be used to query plate information 

    plateId = {1,2,3,4}
plateIdRef = {}
index = 1
platesIsh = {1,2,3,4,5,6,7,8}
local anX = 20
local anY = 120
for i=1, #plates do

 local bufferY = 20
 if index == 4 then
bufferY = 110
anX = 20
elseif index > 4 then
    bufferY = 110

    end
if index == 7 then
    bufferY = 200
    anX = 20

elseif index > 7 then
    bufferY = 200

    if index == 10 then
            bufferY = 290
            anX = 20

        elseif index > 10 then
            bufferY = 290



end

    end


    local dummyVar = math.random()
dummyVar = display.newImageRect(plates[index],80, 80)
sceneGroup:insert(dummyVar)
dummyVar.x = anX + 30
dummyVar.y = anY + bufferY
table.insert(plateIdRef, index)
function dummyVar:touch( event )
if event.phase == "began" then
local alert = native.showAlert( "Corona", event.target, { "OK", "Learn More" } )
    --print( "You touched "..dummyVar)
    return true
end
    end

    dummyVar:addEventListener( "touch", dummyVar )
anX = anX + 110
index = index + 1

end

有什么想法吗？

Answer 1

好的，看看它是如何工作的一个例子：

local plates = {}

local function plateTouch( self, event )
    local phase = event.phase
    if phase == "ended" then
        print( "You touched ".. self.id)
    end
    return true
end

for i=1, 3 do
    plates[i] = display.newImageRect("test.png",80, 80)
    plates[i].id = "plate " .. i
    plates[i].x = 90 * i
    plates[i].y = 90
    plates[i].touch = plateTouch
    plates[i]:addEventListener( "touch", plates[i] )
end

创建每个印版时，您可以定义id属性以了解按下了哪个按钮，也可以添加所需的任何其他属性。

您可以看到API docs for touch event并查看带有表侦听器的示例。

其他方法可能是面向对象的解决方案，您可以在其中定义一个类来创建新版块，但可能首先您需要了解该示例。

显示图像按钮以复制应用程序图标 - Corona SDK

1 个答案: