Iphone 如何将保存的文本文件作为电子邮件附件发送

我有一个应用程序，它将通过电子邮件收集的数据作为附件发送。我使用以下代码创建数据并将其保存到文档文件夹中名为“leads.xml”的文件中

NSArray *sysPath = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory, NSUserDomainMask, YES );
NSString *sysFilePath = [sysPath objectAtIndex:0];
[picker addAttachmentData:sysFilePath mimeType:@"text/xml" fileName:@"leads.xml"];

.
.
.

[emailBody writeToFile:filePath atomically:YES];

然后，我尝试使用以下代码将保存的文件作为附件发送-

NSArray *sysPaths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory, NSUserDomainMask, YES );
NSString *docDirectory = [sysPaths objectAtIndex:0];
NSString *filePath = [NSString stringWithFormat:@"%@/leads.xml", docDirectory];

---

当它运行时，我收到一个错误，我做错了什么？

邮件需要一个

NSData

对象，包含文件内容而不是路径。 您需要将文件加载到

NSData

对象中，如：

NSArray *sysPaths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory, NSUserDomainMask, YES );
NSString *docDirectory = [sysPaths objectAtIndex:0];
NSString *filePath = [docDirectory stringByAppendingPathComponent:@"leads.xml"];

NSData *fileData = [NSData dataWithContentsOfFile:filePath];
[picker addAttachmentData:fileData mimeType:@"text/xml" fileName:@"leads.xml"];

---

您必须提供数据，而不是文件路径：

NSData *data = [NSData dataWithContentsOfFile:sysFilePath];
[picker addAttachmentData:data mimeType:@"text/xml" fileName:fileName];

文件：

附件:

要附加的数据。通常，这是要包含的文件的内容。此参数不能为零。

请尝试此代码

if(mailController)
            {
                mailController.mailComposeDelegate = self;
               // NSLog(@"current index:%d",currentIndex_);
                NSString *string = [NSString stringWithFormat:@"00%d",currentIndex_+43];
              //  NSLog(@"string:%@",string);
                NSString *imageIndex = [[NSBundle mainBundle] pathForResource:string ofType:@"jpg"];

                NSData *myData = [[NSData alloc] initWithContentsOfFile:imageIndex];

                [mailController addAttachmentData:myData mimeType:@"application/jpg" fileName:@"Report"];
                [mailController setSubject:@"your subject"];
                [mailController setMessageBody:@"" isHTML:NO];
                [self presentModalViewController:mailController animated:YES];
                [mailController release];
            }

我在这里发送图像，而不是你可以发送你的文本文件。 这可能会帮助你做几件事

您可以在以下位置检查模拟器的文件系统：

~/Library/Application Support/iPhone Simulator/5.0/Applications/...

并查看您的文件是否实际保存在您期望的位置

第二件事：

NSString

实际上有很多方便的方法来处理文件路径，因此您不必检查后面的斜杠和其他垃圾。在处理文件路径时，应始终使用它们

使用路径

+ pathWithComponents:
– pathComponents
– completePathIntoString:caseSensitive:matchesIntoArray:filterTypes:
– fileSystemRepresentation
– getFileSystemRepresentation:maxLength:
– isAbsolutePath
– lastPathComponent
– pathExtension
– stringByAbbreviatingWithTildeInPath
– stringByAppendingPathComponent:
– stringByAppendingPathExtension:
– stringByDeletingLastPathComponent
– stringByDeletingPathExtension
– stringByExpandingTildeInPath
– stringByResolvingSymlinksInPath
– stringByStandardizingPath
– stringsByAppendingPaths:

---

问题不在于构建文件路径，而在于将文件数据添加到电子邮件中。您遇到的错误是。。？？

+ pathWithComponents:
– pathComponents
– completePathIntoString:caseSensitive:matchesIntoArray:filterTypes:
– fileSystemRepresentation
– getFileSystemRepresentation:maxLength:
– isAbsolutePath
– lastPathComponent
– pathExtension
– stringByAbbreviatingWithTildeInPath
– stringByAppendingPathComponent:
– stringByAppendingPathExtension:
– stringByDeletingLastPathComponent
– stringByDeletingPathExtension
– stringByExpandingTildeInPath
– stringByResolvingSymlinksInPath
– stringByStandardizingPath
– stringsByAppendingPaths: