ipad - detailView 上的 UIDocumentInteractionController

Question

我正在使用 预览文件UIDocumentInteractionController，但它占据了 iPad 的所有区域。我希望它出现在拆分视图控制器的详细视图上。我已经检查过UIView我的视图控制器没有占据所有屏幕。有任何想法吗？我检查了documentInteractionControllerRectForPreview:是否被调用。

-(void)requestExecutedWithSuccess:(Model *)model {
    UIDocumentInteractionController *docInteractionCont = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:model.filePath]];
    self.docInteractionController = docInteractionCont;
    self.docInteractionController.delegate = self;
    BOOL attachmentShown = [self.docInteractionController presentPreviewAnimated:YES];
    ...
}

- (UIViewController *) documentInteractionControllerViewControllerForPreview: (UIDocumentInteractionController *) controller {
    return [self navigationController];
}

- (UIView *)documentInteractionControllerViewForPreview:(UIDocumentInteractionController *)controller
{
    return self.view;
}

- (CGRect)documentInteractionControllerRectForPreview:(UIDocumentInteractionController *)controller
{
    return self.view.frame;
}