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CORONA DEFAULT SETTINGS

July 18, 2011 9:36 am 350 comments

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My Corona SDK Quick Reference Items

Credit this page  to  Fully Croisend

As I stumbled upon his website and cut and pasted these notes as I too had all this written in 22 different places files and documents
 This is just a quick list of reminders and tips that I look at when working on a project…I have these printed out, scribbled and post-it noted all over my desk so i figured I would make this post and clean up my workspace along the way.  You might find them useful…or not. :)

Screen Sizes Background sizing

The iOS platform has these caracteristics:

  • iPad:                                   1024x768px, 132 ppi
  • iPhone/iPod Touch:   320x480px, 163 ppi
  • iPhone 4:                         960x640px, 326 ppi

Because Android is an open platform, there are many different devices and resolutions. A few of the more common screen characteristics are:

  • Nexus One:                   480x800px, 254 ppi
  • Droid:                             854x480px, 265 ppi
  • HTC Legend:              320x480px, 180 ppi

Common Screen Resolutions (Portrait)
iPod Touch – 320×480
iPhone 3G – 320×480
iPhone 4G – 640×960
iPad – 768×1024

iPad2 -
Droid Incredible – 480×800
Droid X – 480×854
Evo – 480×800
XOOM – 800×1280

Gestures to account for, or not:  Tap, Drag, Flick, Swipe, Double Tap, Pinch Open, Pinch Close, Touch and Hold, Shake

Apple recommended minimum tappable size of a UI item:  44×44 points

Icons needed to support an Apple and Android deployment – (Start at a 512×512 image size, because you are going to need this for app submission, make all these smaller ones from that so you don’t end up with a blurry/stretched 512×512 when you are all done – or used SVG or vector of course)

  • Icon@2x.png (114×114)
  • Icon-72.png (72×72)
  • Icon-hdpi.png (72×72)
  • Icon.png (57×57)
  • Icon-mdpi.png (48×48)
  • Icon.ldpi.png (36×36)
Base config.lua file:  (This is my basis for supporting Dynamic Image Resolution )
application =
{
content =
{
width = 320,
height = 480,
scale = “zoomStretch”,
fps=60,
imageSuffix =
{
   ["@1x"] = 1.5,
["@2x"] = 2,
["@3x"] = 2.4,
}
}
}
Base build.settings file:
settings =
{
    android =
    {
      versionCode = “1″
    },
orientation =
{
default = “portrait”,
supported =
{
“portrait”,
},
},
        iphone =
        {
                plist =
                {
                        UIPrerenderedIcon = true,
                        UIApplicationExitsOnSuspend = true,
                        CFBundleIconFile = “Icon.png”,
CFBundleIconFiles = {
  “Icon.png”,
  “Icon@2x.png”,
  “Icon-72.png”,
},
                },
        }
}

Some optimization tips:

Color is set in RGB Value xxx,xxx,xxx –there is a hexvalue routine also

LUA Coding Tips on Variables  (Suggested Format)

  • In general variables will start with a lower case
  • Names of functions will start with an upper case
  • Parameters will  start with an underscore
  • Every new word inside a name of a variable will have an upper case letter. This is due to readability.
  • Functions are variables that are doing something when they are called
  • Tables are variables storing other variables inside them.

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