Adding multiple attachments to email using selection from UITableView - ios

Question

I want to attach csv files created in my app to an email by selecting the files listed in UITableView.
I have all the files listed in my UITableView and am able to attach single selected files to an email without any issue however for the life of me i cannot figure out how to attach multiple files i have selected within the UITableView.
I am storing the selected files in an NSMutableArray called selectedData.
How would i go about doing this? I have been searching for an answer for a while now but have found nothing directly related to what i am trying to do.
here is my code so far:
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [filePathsArray count];
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"MainCell"];
if (cell == nil) {
cell = [[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"MainCell"];
}
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSArray *fileList = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:documentsDirectory error:nil];
NSPredicate *fltr = [NSPredicate predicateWithFormat:#"self ENDSWITH '.csv'"];
NSArray *csvFiles = [fileList filteredArrayUsingPredicate:fltr];
NSLog(#"Contents of directory: %#", csvFiles);
filePathsArray = [[NSFileManager defaultManager]contentsOfDirectoryAtPath:documentsDirectory error:nil];
cell.textLabel.text = [csvFiles objectAtIndex:indexPath.row];
return cell;
}
# pragma mark - Deleting data from Row.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
// Return NO if you do not want the specified item to be editable.
return YES;
}
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
{
NSString *fileName = [filePathsArray objectAtIndex:indexPath.row];
NSString *path;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
path = [paths objectAtIndex:0];
path = [path stringByAppendingPathComponent:fileName];
NSError *error;
[filePathsArray removeObjectAtIndex:indexPath.row];
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
[tableView reloadData];
if ([[NSFileManager defaultManager]fileExistsAtPath:path]) {
if(![[NSFileManager defaultManager] removeItemAtPath:path error:&error])
{
NSLog(#"Delete file error:%#", error);
}
NSLog(#"Deleting file named: %#", path);
}
}
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
if (cell.accessoryType == UITableViewCellAccessoryNone) {
cell.accessoryType = UITableViewCellAccessoryCheckmark;
[self.selectedData addObject:[filePathsArray objectAtIndex:indexPath.row]];
NSLog(#"selectedData %#",self.selectedData);
}
}
- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
if (cell.accessoryType == UITableViewCellAccessoryCheckmark) {
cell.accessoryType = UITableViewCellAccessoryNone;
[self.selectedData removeObject:[filePathsArray objectAtIndex:indexPath.row]];
NSLog(#"deselectedData %#",self.selectedData);
}
}
#pragma mark - Email Selected Data
-(IBAction)emailButton:(id)sender
{
}
- (void)showEmail:(NSString*)file {
NSString *emailTitle = #"Your Data";
NSString *messageBody = #"Attached is your recorded data.";
MFMailComposeViewController *mc = [[MFMailComposeViewController alloc] init];
mc.mailComposeDelegate = self;
[mc setSubject:emailTitle];
[mc setMessageBody:messageBody isHTML:NO];
// Determine the file name and extension
NSArray *filepart = [file componentsSeparatedByString:#"."];
NSString *filename = [filepart objectAtIndex:0];
NSString *extension = [filepart objectAtIndex:1];
// Get the resource path and read the file using NSData
NSString *filePath = [[NSBundle mainBundle] pathForResource:filename ofType:extension];
NSData *fileData = [NSData dataWithContentsOfFile:filePath];
// Determine the MIME type
NSString *mimeType;
if ([extension isEqualToString:#"csv"]) {
mimeType = #"text/csv";
}
// Add attachment
[mc addAttachmentData:fileData mimeType:mimeType fileName:filename];
// Present mail view controller on screen
[self presentViewController:mc animated:YES completion:NULL];
}
- (void) mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error
{
switch (result)
{
case MFMailComposeResultCancelled:
NSLog(#"Mail cancelled");
break;
case MFMailComposeResultSaved:
NSLog(#"Mail saved");
break;
case MFMailComposeResultSent:
NSLog(#"Mail sent");
break;
case MFMailComposeResultFailed:
NSLog(#"Mail sent failure: %#", [error localizedDescription]);
break;
default:
break;
}
// Close the Mail Interface
[self dismissViewControllerAnimated:YES completion:NULL];
}
Any and all help would be greatly appreciated.

Answer 1

Try something like this.
Assuming all files are of the same mime-type csv.
And assuming that all file names in self.selectedData have a structure like "myfile.csv".
- (void)showEmail {
NSString *emailTitle = #"Your Data";
NSString *messageBody = #"Attached is your recorded data.";
MFMailComposeViewController *mc = [[MFMailComposeViewController alloc] init];
mc.mailComposeDelegate = self;
[mc setSubject:emailTitle];
[mc setMessageBody:messageBody isHTML:NO];
for (NSString *file in self.selectedData) {
// Determine the file name and extension
NSArray *filepart = [file componentsSeparatedByString:#"."];
NSString *filename = [filepart objectAtIndex:0];
NSString *extension = [filepart objectAtIndex:1];
// Get the resource path and read the file using NSData
NSString *filePath = [[NSBundle mainBundle] pathForResource:filename ofType:extension];
NSData *fileData = [NSData dataWithContentsOfFile:filePath];
// Determine the MIME type
NSString *mimeType;
if ([extension isEqualToString:#"csv"]) {
mimeType = #"text/csv";
}
// Add attachment
[mc addAttachmentData:fileData mimeType:mimeType fileName:filename];
}
// Present mail view controller on screen
[self presentViewController:mc animated:YES completion:NULL];
}