UIDocumentsInteractionController显示iBooks但不打开它

Question

我的UIDocumentsInteractionController正在使用一个带有"iBooks"按钮的动作表,但是当我点击那个按钮时,它只是解散它并没有把我带到iBooks.这是我的代码:

NSString *filenamePath =[NSString stringWithFormat:@"temp.%@", [[file path] pathExtension]];

    NSString *docDir = [DataCenter getDocumentsDirectoryPath];

    NSString *fullPath = [docDir stringByAppendingPathComponent:filenamePath];

    NSURL *url = [NSURL fileURLWithPath:fullPath];
    UIDocumentInteractionController *c = [UIDocumentInteractionController interactionControllerWithURL:url];

    BOOL success = [c presentOpenInMenuFromBarButtonItem:buttonBack animated:YES];

我究竟做错了什么？谢谢

Answer 1

对于那些坚持这一点的人:你根本不需要将自己设置为UIDocumentInteractionController的委托.

问题[UIDocumentInteractionController interactionControllerWithURL:url]是正在自动释放.它认为它会被显示的动作表内部保留,但显然不是.所以,是的,必须保留它,直到行动表解散.