Question

我试图一次显示一张图片。我总共大约20个。我需要一个按钮，按下它时会生成一个随机图像，每次按下该按钮，它都会生成一个之前未被查看的新随机图像。

基本上我希望代码只循环遍历所有图片一次，直到所有图片都被看到。

Answer 1

您没有说明如何生成图像，但假设您从现有的源图像池中进行绘制，这是一种方式。

-- ASSUME SOURCE IMAGES ARE LABELED "image1", "image2", "image3"...

local theList

on mouseUp
   if theList is empty then
      -- CREATE A RANDOM LIST OF NUMBERS
      repeat with N = 1 to 20
         put N & comma after theList
      end repeat
      delete last char of theList
      sort items of theList by random(10000)
   end if
   --
   -- SHOW SOURCE IMAGE IN A CONTAINER IMAGE NAMED "DISPLAY"
   put item 1 of theList into N
   set the text of image "display" to the text of image ("image" & N)
   delete item 1 of theList
end mouseUp

随机，非重复图像 - LiveCode

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