1
目前正在使用Corona模拟器开发我的第一款移动应用程序。我试图让我的一个按钮去另一个场景,它会显示另一个页面。目前,这是我我的onRelease呼叫有问题吗?
------------------main.lua-----------------
display.setStatusBar(display.HiddenStatusBar)
local storyboard = require "storyboard"
storyboard.gotoScene("MainScreen")
------------------MainScreen.lua------------------------
local composer = require("composer")
local storyboard = require ("storyboard")
local widget = require "widget"
local scene = storyboard.newScene()
local function returnStates()
storyboard.gotoScene("states", "crossFade", 1000)
return true
end
local function returnMonth()
storyboard.gotoScene("months", "crossFade", 1000)
return true
end
----------------------------------------
function scene:createScene(event)
local group = self.view
local background = display.newImage("blue.jpg")
local logo = display.newImage("black.png")
logo.x=160
logo.y=100
local xor = display.newImage("or.png")
xor.x=145
xor.y=315
buttonHome = widget.newButton{
defaultFile = "statebutton.png",
overFile = "pressedstate.png",
onRelease = returnStates
}
buttonHome.x = 160
buttonHome.y = 230
buttonHome2 = widget.newButton{
defaultFile = "monthbutton.png",
overFile = "pressedmonth.png",
onRelease = returnMonth()
}
buttonHome2.x = 160
buttonHome2.y = 400
group:insert (background)
group:insert (buttonHome)
group:insert (buttonHome2)
end
function scene:enterScene(event)
local group = self.view
end
function scene:exitScene(event)
local group = self.view
end
function scene:destroyScene(event)
local group = self.view
if buttonHome then
buttonHome:removeSelf()
buttonHome = nil
end
if buttonHome2 then
buttonHome2:removeSelf()
buttonHome2 = nil
end
end
scene:addEventListener("createScene", scene)
scene:addEventListener("enterScene", scene)
scene:addEventListener("exitScene", scene)
scene:addEventListener("destroyScene", scene)
return scene
问题
我有一个很难搞清楚为什么我收到从我的电晕模拟器此错误:
states.lua:: attempt to index global 'self' (a nil value)
stack traceback:
[C]: in function 'error'
?: in function 'gotoScene'
MainScreen.lua:8: in function '_onRelease'
?: in function '?'
?: in function <?:677>
?: in function <?:221>
有什么问题用我的onRelease
电话?
任何人都可以向我解释这是什么意思或如何解决这个问题?
你好,谢谢你的反应不幸的是我已经把它改为 onRelease = returnMonth 现在我得到这个错误 states.lua6:试图索引全球的“自我”(一个零值) 栈回溯: [C]:在函数'error'中 ?:在函数'gotoScene'中 MainScreen.lua:8:在函数中'_onRelease' ?:in function'?' ?:功能 ?:在功能 我是否也必须在新的场景上有作曲家专栏? – ratman