How to prevent a modal UIImagePickerController from rotating?

问题

I have an app that fully support rotation. I am modally adding a UIImagePickerController for which there is no support for UIInterfaceOrientationLandscape and I cannot get the controller to stay in portrait.

In other words, I need to disable rotation for the UIImagePickerController so it stays in portrait, without removing rotation for the rest of my app. this seems basic, but I can't seem to locate it. How can I prevent this rotation?

UPDATE

As suggested, I tried subclassing with the following code:

@interface UAImagePickerController : UIImagePickerController {
}
@end

@implementation UAImagePickerController
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation {
    return UIDeviceOrientationIsPortrait(toInterfaceOrientation);
}
@end

The line is not being hit at all with a breakpoint… i think there must be something funky about the UIImagePickerView

回答1:

Subclass UIImagePickerController and have that new class implement shouldAutorotateToInterfaceOrientation: to make it rotate to portrait only, something like this:

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

回答2:

I created my UIImagePickerController inside a UIViewController with the respective shouldAutorotateToInterfaceOrientation method implemented and presented it like this

[self.view addSubview:myImagePicker.view];
[targetVC.navigationController presentModalViewController:self animated:YES];

Hope that helps.

回答3:

You should override _isSupportedInterfaceOrientation:, and not the shouldAutorotateToInterfaceOrientation:

iPad 2 UIImagePickerController camera auto-rotation driving me mad!

回答4:

Just drop this in above your ViewControllers @implementation block (in the .m file)

@implementation UIImagePickerController (portrait)

- (BOOL)_isSupportedInterfaceOrientation:(UIDeviceOrientation)orientation
{
    return UIDeviceOrientationIsPortrait(orientation);
}

@end

来源：https://stackoverflow.com/questions/4357045/how-to-prevent-a-modal-uiimagepickercontroller-from-rotating