無法將CSV文件附加到iPhone郵件應用程序

Question

下面的代碼完美地通過郵件應用程序發送文本（.txt）附件（textfile.csv需要隨處使用textfile.txt進行修改）。但是，當我嘗試附加csv文件時，它根本不起作用（郵件應用程序打開時顯示textfile.csv的圖標，但是當郵件到達時，它沒有附件（數據不顯示在郵件正文內）。區別，如果我改變，MIME類型爲「text/plain的。」我疑惑......我在做什麼錯了？任何想法嗎？

- (NSString *)getPath { 
    NSString *paths = [NSSearchPathForDirectoriesInDomains 
    (NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0]; 
    return [paths stringByAppendingPathComponent:@"textfile.csv"]; 
} 

//Saves file to Documents folder 
//Method writes a string to a text file 
-(void) writeToTextFile{ 
//get the documents directory: 
NSArray *paths = NSSearchPathForDirectoriesInDomains 
(NSDocumentDirectory, NSUserDomainMask, YES); 
NSString *documentsDirectory = [paths objectAtIndex:0]; 


//make a file name to write the data to using the documents directory: 
NSString *fileName = [NSString stringWithFormat:@"textfile.csv", 
documentsDirectory]; 
//create content 
NSString *content = @"One,Two,Three,Four,Five"; 

//save content to the documents directory 
[content writeToFile:fileName 
    atomically:NO 
    encoding:NSStringEncodingConversionAllowLossy 


error:nil]; 
} 

// Displays an email composition interface inside the application. Populates all the Mail fields. 
-(void)displayComposerSheet 
{ 
MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init]; 
picker.mailComposeDelegate = self; 
[picker setSubject:@"Subject"]; 

// Set up recipients 
NSArray *toRecipients = [NSArray arrayWithObject:@"email@domain.com"]; 

[picker setToRecipients:toRecipients]; 
// Fill out the email body text 
NSString *emailBody = (@"Data is attached as a .CSV file"); 

[picker setMessageBody:emailBody isHTML:NO]; 

NSString *SavedDataPath = [self getPath]; 
NSString *path = SavedDataPath; 

NSData *myData = [NSData dataWithContentsOfFile:path]; 
    [picker addAttachmentData:myData mimeType:@"text/csv" fileName:@"textfile.csv"]; 

[self presentModalViewController:picker animated:YES]; 
    [picker release]; 
} 

Answer 1

NSString *str_mail = @"one,two,three"; 
NSData *myData = [str_mail dataUsingEncoding:NSUTF8StringEncoding]; 

MFMailComposeViewController *mailController = [[MFMailComposeViewController alloc] init]; 
mailController.mailComposeDelegate = self; 
[mailController addAttachmentData:myData mimeType:@"text/csv" fileName:@"myfile"]; 
[mailController setMessageBody:@"body" isHTML:NO]; 
[self presentModalViewController:mailController animated:YES]; 

Answer 2

儘量保持MIMETYPE爲@「啞劇」。

Answer 3

[mail addAttachmentData:[[[self eventController] csvDataForEvent:[self event]] dataUsingEncoding:NSUTF8StringEncoding] mimeType:@"text/csv" fileName:[NSString stringWithFormat:@"Product.csv"]];