Lua - nil值

Question

我从Corona SDK收到以下错误消息：尝试调用字段“ImageSheet”（零值）堆栈回溯。有人可以指出错误吗？

   local ISPar = {
    width = 2541,
    height = 264,
    numFrames = 7
 }
local ImageSheet = graphics.ImageSheet("Apus.png, ISPar")

local ApusSequenceData = {
  {name = "fly", frames {1,2,3,4,5,6,7}, time = 800, loopCount = 0}
  }

local Apus = display.newSrpite(ImageSheet, ApusSequenceData)
Apus.x = display.contentWidth/2
Apus.y = display.contentHeight/2
Apus:play()

Answer 1

你的函数名称错误，它应该是graphics.newImageSheet。你在调用引号时也错了引号。然后你拼错了newSprite

此代码应该有效：

local ISPar = {
    width = 2541,
    height = 264,
    numFrames = 7
}
local ImageSheet = graphics.newImageSheet("Apus.png", ISPar)

local ApusSequenceData = {{name = "fly", frames = {1,2,3,4,5,6,7}, time = 800, loopCount = 0}}

local Apus = display.newSprite(ImageSheet, ApusSequenceData)
Apus.x = display.contentWidth/2
Apus.y = display.contentHeight/2
Apus:play()