Button on/off state

Comments

• ar2rsawseen Maintainer

  August 2012 edited August 2012 Accepted Answer

  Modified example to working two state switch which uses Button class

  Switch = Core.class(Sprite)   --constructor for Button function Switch:init(button1, button2) self.button1 = button1 self.button2 = button2 self:addChild(button1) self.state = false self.button1:addEventListener("click", self.changeState, self) self.button2:addEventListener("click", self.changeState, self) self.onChange = Event.new("onChange") end   function Switch:changeState() self.state = not self.state if self.state then if self:contains(self.button1) then self:removeChild(self.button1) end self:addChild(self.button2) else if self:contains(self.button2) then self:removeChild(self.button2) end self:addChild(self.button1) end self.onChange.state = self.state self:dispatchEvent(self.onChange) end   function Switch:getState() return self.state end

  Usage:

  local button1 = Button.new(Bitmap.new(Texture.new("button1_up.png")), Bitmap.new(Texture.new("button1_down.png"))) local button2 = Button.new(Bitmap.new(Texture.new("button2_up.png")), Bitmap.new(Texture.new("button2_down.png")))   local switch = Switch.new(button1, button2)   switch:addEventListener("onChange", function(e) print(e.state) if e.state then --show popup else --hide popuo end end)   stage:addChild(switch)

  http://appcodingeasy.com/Gideros-Mobile

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• twisttap Member

  August 2012

  Actually this is not I was asking, I want an on off switch with a single button which is like when I press button1 it will switch to active state and stay there and vice versa ^^

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• ar2rsawseen Maintainer

  August 2012

  This comment probably is for my previous example, right?

  http://appcodingeasy.com/Gideros-Mobile

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• talis Guru

  August 2012 edited August 2012

  I had something like this in my mind @twisttap , of course @ar2rsawseen 's solution is working and can be more better but just to approach the problem from different point of view. (More structured programming than OOP)
  
  1-I will add one function to the button class.

  function Button:changeState(sprite) if self:contains(self.upState) then self:removeChild(self.upState) end if self:contains(self.downState) then self:removeChild(self.downState) end self.upState = sprite self.downState = sprite self:updateVisualState(true) end

  2-I will call my function on press function of my button. And with a global bolean variable i will check if it is pressed or not. I f yes i will call it like this.

  myButton:changeState(OffSprite)

  3-If no:

  myButton:changeState(OnSprite)

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