Developing Universal iOS App

This presentation shows how to develop an universal iOS app or "convert" a existing one into universal. An universal app must work in iPad/iPod and iPhone.

Transcript

1. Developing an
   Universal iOS app
   Or converting a existing one into universal...
   

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2. –Apple Developer Documentation
   “A universal app is a single app that is
   optimized for iPhone, iPod touch, and iPad
   devices.”
   

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3. Universal app setup
   • First you'll need to set project Devices as 'Universal'
   

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4. –Morpheus
   “You take the blue pill -- the story ends, you
   wake up in your bed and believe whatever
   you want to believe. You take the red pill --
   you stay in Wonderland and I show you how
   deep the rabbit-hole goes.”
   

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5. ViewControllers
   • Consider defining separate view controller
   classes for iPhone and iPad devices.
   • If you use a single view controller class for both
   platforms, your code must support both iPhone
   and iPad screen sizes.
   

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6. Views
   • Consider using separate sets of views for iPhone
   and iPad devices. For custom views, this means
   defining different versions of your class for each
   device.
   • If you choose to use the same custom view for
   both devices, make sure your drawRect: and
   layoutSubviews methods especially work
   properly on both devices.
   

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7. Using Runtime checks
   if (UI_USER_INTERFACE_IDIOM() ==
   UIUserInterfaceIdiomPad) {!
   // The device is an iPad running iOS 3.2
   or later.!
   }!
   else {!
   // The device is an iPhone or iPod touch.!
   }
   

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8. Drawing objects
   self.wrapper.frame = CGRectMake(15,
   10, self.frame.size.width - 30, 135);
   

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9. Using different .XIB for the
   same ViewController
   

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10. if ([[UIDevice currentDevice] userInterfaceIdiom]
    == UIUserInterfaceIdiomPhone) {!
    self = [super initWithNibName:nibNameOrNil
    bundle:nibBundleOrNil];!
    } else {!
    self.view = [[[NSBundle mainBundle]
    loadNibNamed:@"DDSigninFormViewController~ipad"
    owner:self options:nil] objectAtIndex:0];!
    }
    

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11. Live demo/coding
    

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12. Thank you!
    @wolcanus
    me@wolcan.us
    

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