iPod Touch でも外部ディスプレイ出力

iOS

普段は iPhone 3GS を使ってるから意識してなかったんだけど、iPhone 4 や iPod Touch は外部ディスプレイ接続できるようになってたんだね。まったく気付いてなかった。^^;)

screens
Returns an array containing all of the screens attached to the device.

+ (NSArray *)screens
...
Not all devices support external displays. Currently, external displays are supported by iPhone and iPod touch devices with Retina displays and iPad. Older devices, such as the iPhone 3GS do not support external displays. Connecting to an external display requires an appropriate cable between the device and display.

UIScreen Class Reference