UIImagePickerController 在iPad弹出时报错 iOS6.0

UIImagePickerController 在 ipad 中弹出时报错：

*** Terminating app due to uncaught exception 'UIApplicationInvalidInterfaceOrientation', reason: 'Supported orientations has no common orientation with the application, and shouldAutorotate is returning YES'

原因：

这是 6.0 的bug，6.1 中已经 fix bug

iOS 6.1 - fixed

As of iOS 6.1, this no longer occurs, it is very important to follow my tips in order to avoid a crash under iOS 6.0.x, the below still applies to that.

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iOS 6.0.x workaround

This is in actual fact a bug in iOS 6.0, this should be fixed in future iOS releases.

An engineer from Apple has explained this bug and a workaround here:https://devforums.apple.com/message/731764

This is happening because the Application wants landscape orientation only but some Cocoa Touch View Controllers require strictly Portrait orientation which is the error - not that they should be requiring more then Portrait but their interpretation of the Applications requirements.

An example of this can be the following:

iPad app supporting landscape only displays a UIImagePickerController via a UIPopoverController. The UIImagePickerController requires Portrait orientation, but the app is forcing landscape only. Error and... crash

Other frameworks that have been reported as problematic include the Game Center login view controller.

The workaround is pretty simple but not ideal... You keep the correct orientations declared in your info.plist/project info pane, but in the Application Delegate class you declare that you allow all orientations.

Now each View Controller you add to the window must specify itself that it can only be Landscape. Please check the link for more details.

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解决方式

http://stackoverflow.com/questions/12522491/crash-on-presenting-uiimagepickercontroller-under-ios-6-0/12523916#12523916

http://stackoverflow.com/questions/12540597/supported-orientations-has-no-common-orientation-with-the-application-and-shoul?lq=1

第一种解决方式：

// This category (i.e. class extension) is a workaround to get the
// Image PickerController to appear in landscape mode.
@interface UIImagePickerController(Nonrotating)
- (BOOL)shouldAutorotate;
@end

@implementation UIImagePickerController(Nonrotating)

- (BOOL)shouldAutorotate {
  return NO;
}