Meine Anwendung soll eine csv-Datei erstellen und sie per E-Mail versenden. Aber wenn ich Mail verwerfen, ich bin immer schwarzen Bildschirm. Die vorherige Ansicht wird nicht angezeigt und wird durch den schwarzen Bildschirm verdeckt. Ich habe mir verschiedene Fragen und Antworten in Stack Overflow angesehen. Aber nichts scheint zu funktionieren.
- (IBAction)openMail:(id)sender
{
[self getdata];
if ([MFMailComposeViewController canSendMail])
{
MFMailComposeViewController *mailer = [[MFMailComposeViewController alloc] init];
mailer.mailComposeDelegate = self;
[mailer setSubject:@"BMNET- Travel Log"];
NSString *CSVstring=@"Name, StartingDateNTime, EndingDateNTime, TravelType, DistanceTravelled, Amount\n" ;
NSString *CSVPath,*record;;
NSString *temporayCSV= @"" ;
for (int i=0; i<[getAmount count]; i++) {
record = [NSString stringWithFormat:@"%@, %@, %@, %@, %@, %@", [getName objectAtIndex:i], [getStartDate objectAtIndex:i], [getEndDate objectAtIndex:i],[getType objectAtIndex:i],[getDistance objectAtIndex:i],[getAmount objectAtIndex:i]];
NSLog(@"%d",i);
temporayCSV = [NSString stringWithFormat:@"%d %@ \n ",(i+1),record];
CSVstring = [CSVstring stringByAppendingFormat:temporayCSV];
NSLog(@"%@",CSVstring);
}
NSArray *paths = NSSearchPathForDirectoriesInDomains(
NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSArray *toRecipients = [NSArray arrayWithObjects:@"", nil];
[mailer setToRecipients:toRecipients];
CSVPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@.csv", @"CSV_FormatedTable"]];
NSFileManager *fileManager;
//add our file to the path
[fileManager createFileAtPath:CSVPath contents:[CSVstring dataUsingEncoding:NSUTF8StringEncoding] attributes:nil];
NSData *rolesCSVData =[NSData dataWithContentsOfFile:CSVPath];
NSLog(@"The data is %@",CSVstring);
//create my data to append
NSFileHandle *handle;
handle = [NSFileHandle fileHandleForWritingAtPath: CSVPath ];
//say to handle where's the file fo write
[handle truncateFileAtOffset:[handle seekToEndOfFile]];
//position handle cursor to the end of file
[handle writeData:[data dataUsingEncoding:NSUTF8StringEncoding]];
//write data to with the right encoding
[mailer addAttachmentData:rolesCSVData mimeType:@"text/csv" fileName:@"Log"];
NSString *emailBody = @"Attachment of Log";
[mailer setMessageBody:emailBody isHTML:NO];
[self presentModalViewController:mailer animated:YES];
mailer.modalPresentationStyle = UIModalPresentationPageSheet;
}
else
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Failure"
message:@"Your device doesn't support the composer sheet"
delegate:nil
cancelButtonTitle:@"OK"
otherButtonTitles:nil];
[alert show];
}
}
- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error
{
switch (result)
{
case MFMailComposeResultCancelled:
NSLog(@"Mail cancelled: you cancelled the operation and no email message was queued.");
break;
case MFMailComposeResultSaved:
NSLog(@"Mail saved: you saved the email message in the drafts folder.");
break;
case MFMailComposeResultSent:
NSLog(@"Mail send: the email message is queued in the outbox. It is ready to send.");
break;
case MFMailComposeResultFailed:
NSLog(@"Mail failed: the email message was not saved or queued, possibly due to an error.");
break;
default:
NSLog(@"Mail not sent.");
break;
}
// Remove the mail view
[self dismissModalViewControllerAnimated:YES];
}
