使用iOS6 UIActivityViewController附加对象 [英] Attach object using iOS6 UIActivityViewController

问题描述

我正在迁移使用UIActivityViewController在iOS6中共享，但我无法弄清楚如何在通过电子邮件共享时创建电子邮件附件对象。

I'm migrating to use the UIActivityViewController for sharing in iOS6, but I can't figure out how to create email attachment objects to be included when sharing by email.

iOS5中的相应代码是：

The corresponding code in iOS5 is:

MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
[picker addAttachmentData:data mimeType:@"application/XXX" fileName:fileName];

推荐答案

你对UIActivityViewController的控制非常有限，但如果你通过提供知名的mime类型，我发现你可以通过在文件URL中提供相关的文件扩展名来使其正常工作。例如，如果您的附件是vCard，请在文件URL中使用.vcf扩展名：

You have very limited control over UIActivityViewController, but if you're attaching well-know mime types, I found you can get it to work correctly by providing the associated file extension in a file URL. For example, if your attachment is a vCard, use the ".vcf" extension in the file URL:

NSString *docsPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
// The file extension is important so that some mime magic happens!
NSString *filePath = [docsPath stringByAppendingPathComponent:@"vcard.vcf"];
NSURL *fileUrl     = [NSURL fileURLWithPath:filePath];

[data writeToURL:fileUrl atomically:YES]; // save the file

// Now pass the file URL in the activity items array
UIActivityViewController *avc = [[UIActivityViewController alloc] initWithActivityItems:
    @[@"Here's an attached vCard", fileUrl] applicationActivities:nil];
[vc presentModalViewController:avc animated:YES];

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