问题
I have an iOS app where I set the Required Device Capabilities config setting to require both still-camera and auto-focus-camera because it needs to run on newer generation devices that have the better auto-focus camera sensor.
I'm now getting users reporting that they are unable to use the app on new iPod Touches (4th gen) and iPad 2 devices. Both these have the newer camera so they should work, unfortunately I dont have either of these devices to debug with.
Have the device capability settings changed with newer versions of the SDK? If not, why are these device capability settings not allowing users to run the app on devices that should be supported (iPad 2 & iPod Touch 4th Gen)?
回答1:
Both iPod Touch 4 and iPad 2 cameras do not have autofocus. I am unable to find the correct documentation though. But there is another app that directly mentions that the results will not be great for that reason.
回答2:
Neither device you mention has an autofocus camera. Pressing the App Store "Install" button on my iPad 2 pops up a dialog saying it can't be installed due to the lack of autofocus.
来源：https://stackoverflow.com/questions/6397394/ios-required-device-capabilities-autofocus-camera