Posts in Category "Retina"

Excluding Devices From Requested Display Resolution Mode

RequestedDisplayResolution tag in application descriptor allows the developer to choose between standard or high resolution on iOS devices with high resolution screen. High resolution screens were earlier only available in iPhone and iPod 4th Generation and above. Recently released models on iPad namely iPad 3rd & 4th Generation also boast of a high resolution screen with 2048×1536 resolution. Specifying a ‘high’ value in requestedDisplayResolution tag enables the retina mode in the all iOS devices having the high resolution screen. Prior to AIR 3.6, there was no way to enable or disable retina mode on some specific devices. There existed some workarounds but they came with some trade offs of not able to use the iOS 6 specific features.

A new attribute ‘excludeDevices’ has been added in AIR 3.6  in the requestedDisplayResolution tag in the application descriptor. Developers will now be able to explicitly disable the specified display resolution on one or more iOS devices using this attribute.

<requestedDisplayResolution excludeDevices="iPhone4,1">high</requestedDisplayResolution>

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Launch Images for AIR Applications on iOS

Apple expects all its iOS applications to have launch images for all supported devices and resolutions to enhance the user experience at application launch.  In general, an iPhone application should have a Portrait launch image and an iPad application should have a launch image as per the launch orientation of the application. As mentioned here, every application must include launch image for different sizes and resolution. Looking at the sizes closely, we notice that Apple expects fullscreen launch images for iPhone whereas it expects non fullscreen launch images for iPad. This size recommendation by Apple is irrespective of the fact whether the application is meant to be fullscreen or not. Continue reading…