iphone – 如何在iOS应用程序中使用“open in …”功能？

UIDocumenTinteractionController *controller = [UIDocumenTinteractionController interactionControllerWithURL:[NSURL fileURLWithPath:appFile]];
        self.controller.delegate = self;
CGRect navRect = self.view.frame;
[self.controller presentOptionsMenuFromRect:navRect inView:self.view animated:YES];

实现以下UIDocumenTinteractionControllerDelegate方法

#pragma mark - UIDocumenTinteractionControllerDelegate

//===================================================================
- (UIViewController *)documenTinteractionControllerViewControllerForPreview:(UIDocumenTinteractionController *)controller
{
    return self;
}

- (UIView *)documenTinteractionControllerViewForPreview:(UIDocumenTinteractionController *)controller
{
    return self.view;
}

- (CGRect)documenTinteractionControllerRectForPreview:(UIDocumenTinteractionController *)controller
{
    return self.view.frame;
}