Recipe: Snapping Photos
In addition to selecting pictures, the image picker controller enables you to snap photos with a device’s built-in camera. Because cameras are not available on all iOS units (specifically, older iPod touch and iPad devices), begin by checking whether the device running the application supports camera usage:
if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera]) ...
The rule is this: Never offer camera-based features for devices that don’t have cameras. Although iOS 7 was deployed only to camera-ready devices, no one but Apple knows what hardware will be released in the future. As unlikely as it sounds, Apple could introduce new models without cameras. ...
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