这是Apples示例项目使用的那个
以下是各自的代码
我的应用程序
docInteractionController = [UIDocumentInteractionController interactionControllerWithURL:fileURL]; [docInteractionController presentOpenInMenuFromBarButtonItem:(UIBarButtonItem*)sender animated:YES];
Apple示例项目
NSURL *fileURL;
if (cellIndexPath.section == 0)
{
// for section 0,we preview the docs built into our app
fileURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:documents[cellIndexPath.row] ofType:nil]];
}
else
{
// for secton 1,we preview the docs found in the Documents folder
fileURL = [self.documentURLs objectAtIndex:cellIndexPath.row];
}
self.docInteractionController.URL = fileURL;
[self.docInteractionController presentOptionsMenuFromRect:longPressGesture.view.frame
inView:longPressGesture.view
animated:YES];
我应该怎样做才能获得邮件选项？
解决方法
按照Apple Docs on UIDocumentInteractionController
对于-presentOpenInMenuFromBarButtonItem：animated：它说：
This method is similar to the
@H_301_27@presentOptionsMenuFromBarButtonItem:animated:method,but presents a
menu restricted to a list of apps capable of @H_301_27@opening the current
document. This determination is made based on the document type (as
indicated by the UTI property) and on the document types supported by
the installed apps.
…
If there are no registered apps that support opening the document,the
document interaction controller does not display a menu.
所以：
>要显示打开文件的选项,请使用-presentOpenInMenuFromBarButtonItem：
>要显示适用于该文件的所有可能选项,请使用-presentOptionsMenuFromBarButtonItem：或通用-presentOptionsMenuFromRect：
例：
docInteractionController = [UIDocumentInteractionController interactionControllerWithURL:fileURL];
//[docInteractionController setDelegate:self];
[docInteractionController setUTI:@"public.data"];
[docInteractionController presentOptionsMenuFromBarButtonItem:(UIBarButtonItem*)sender
animated:YES];
//or a generic method
//[docInteractionController presentOptionsMenuFromRect:sender.frame
// animated:YES];
