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Screen/Device height and width — Gideros Forum
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    Screen/Device height and width

    gyrospgyrosp Member
    edited November 2012 in General questions
    And another question ;):

    How do I get the width and heigt of the screen/device?

    In the docs I've found Application:getDeviceWidth().

    But when I use it I get the error
    Test.lua:104: calling 'getDeviceWidth' on bad self (Application expected, got table)
stack traceback:
    this is the corresponding part of my code:
    if (self.PosX > Application:getDeviceWidth()) then
	self.PosX = 0
end
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    Comments

    • ar2rsawseenar2rsawseen Maintainer
      edited November 2012
      Application is a class name, whereas application is the global predefined instance of Application class.
      Thus:
      if (self.PosX > application:getDeviceWidth()) then
	self.PosX = 0
end
      And if you are going to use some sort of automatic scaling, I would suggest using getContentWidth and not device width. ;)

      http://appcodingeasy.com/Gideros-Mobile/Difference-between-content-logical-and-device-dimensions-in-Gideros-Mobile
      http://appcodingeasy.com/Gideros-Mobile
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    • gyrospgyrosp Member
      :-S ... sometimes it's so easy :(... thanks a lot :D

      Unfortunately getDeviceWidth and getDeviceHeight do not work as I expected with the player
      	print(application:getContentWidth())
	print(application:getContentHeight())
      generates following output
      320
480
      My player settings are 768x1024(iPad) and the orientation is Portrait.
      Should the value of getContentWidth 768 and getContentHeight 1024?
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    • OZAppsOZApps Guru
      Accepted Answer
      @gyrosp, the settings that show up with
      getDeviceWidth
      and
      getDeviceHeight
      are what are set in your player device.

      However the
      logicalHeight
      and
      logicalWidth
      return the settings as per the Project. So to get the results of 768x1024, you need the getDeviceWidth and getDeviceHeight not contentHeight and contentWidth (which could be scaled based on your project settings).

      Likes: gyrosp

      twitter: @ozapps | http://www.oz-apps.com | http://howto.oz-apps.com | http://reviewme.oz-apps.com
      Author of Learn Lua for iOS Game Development from Apress ( http://www.apress.com/9781430246626 )
      Cool Vizify Profile at https://www.vizify.com/oz-apps
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    • gyrospgyrosp Member
      @OZApps
      Ok, I get it and it works now ;).

      But what are the right project settings if I want to create a mulitplatform/multidevice app? Does it matter at all?
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    • ar2rsawseenar2rsawseen Maintainer
      Accepted Answer
      Here is an interesting thread you can read on:
      http://giderosmobile.com/forum/discussion/comment/13692#Comment_13692

      Likes: gyrosp

      http://appcodingeasy.com/Gideros-Mobile
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    • gyrospgyrosp Member
      Thanks for the link, I'll take a look at it :D
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