i have head scratcher, have created uitableview display recorded data stored in documents directory allows me select multiple files , send them in email. works great, select listed files want send in email, click email button , email appear list of attached files. names , extensions correct.
the problem is, send email , once received attachments have dissapeared , been replaced txt files names such att00001.txt, att00002.txt , on.
can explain me why happening , how can fixed? have listed code below:
- (nsinteger)numberofsectionsintableview:(uitableview *)tableview { // return 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 row. - (bool)tableview:(uitableview *)tableview caneditrowatindexpath:(nsindexpath *)indexpath { // return no if not want specified item 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]]; [[tableview indexpathsforselectedrows] count]; [self updateemailbuttontitle]; 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]]; [self updateemailbuttontitle]; nslog(@"deselecteddata %@",self.selecteddata); } } #pragma mark - email selected data -(ibaction)emailbutton:(id)sender { [self showemail]; } - (void)showemail { nsstring *emailtitle = @"your data"; nsstring *messagebody = @"attached recorded data."; mfmailcomposeviewcontroller *mc = [[mfmailcomposeviewcontroller alloc] init]; mc.mailcomposedelegate = self; [mc setsubject:emailtitle]; [mc setmessagebody:messagebody ishtml:no]; (nsstring *file in self.selecteddata) { // determine file name nsstring *filename = [self.selecteddata objectatindex:0]; // read file using nsdata nsdata *filedata = [nsdata datawithcontentsoffile:file]; // add attachment [mc addattachmentdata:filedata mimetype:@"text/csv" 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 mail interface [self dismissviewcontrolleranimated:yes completion:null]; } any , appreciated.
edit - here finished , working code, thank helped this:
- (nsinteger)numberofsectionsintableview:(uitableview *)tableview { // return 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 row. - (bool)tableview:(uitableview *)tableview caneditrowatindexpath:(nsindexpath *)indexpath { // return no if not want specified item 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]]; [[tableview indexpathsforselectedrows] count]; [self updateemailbuttontitle]; 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]]; [self updateemailbuttontitle]; nslog(@"deselecteddata %@",self.selecteddata); } } -(void)updateemailbuttontitle { nsarray *selectedrows = [self.tableview indexpathsforselectedrows]; if (selectedrows.count == self.selecteddata.count) { self.emailbutton.enabled = no; self.emailbutton.title = @"email"; } else if (selectedrows.count == 0) { self.emailbutton.enabled = yes; self.emailbutton.title = @"email selected data"; } } #pragma mark - email selected data -(ibaction)emailbutton:(id)sender { [self showemail]; } - (void)showemail { nsstring *emailtitle = @"your data"; nsstring *messagebody = @"attached recorded data."; mfmailcomposeviewcontroller *mc = [[mfmailcomposeviewcontroller alloc] init]; mc.mailcomposedelegate = self; [mc setsubject:emailtitle]; [mc setmessagebody:messagebody ishtml:no]; (nsstring *file in self.selecteddata) { nsstring *documentsdirectory = [nssearchpathfordirectoriesindomains(nsdocumentdirectory, nsuserdomainmask, yes) objectatindex:0]; nsstring *csvfilepath = [documentsdirectory stringbyappendingpathcomponent:file]; // check conents of string "file" , match files located in documents directory. nsdata *mydata = [nsdata datawithcontentsoffile:csvfilepath]; nslog(@"my nsdata %@",mydata); //check whether nsdata nil or not [mc addattachmentdata:mydata mimetype:@"text/csv" filename:file]; } [self presentviewcontroller:mc animated:yes completion:nil]; } - (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 mail interface [self dismissviewcontrolleranimated:yes completion:null]; }
this code attached csv file me:
nsstring *documentsdirectory = [nssearchpathfordirectoriesindomains(nsdocumentdirectory, nsuserdomainmask, yes) objectatindex:0]; nsstring *csvfilepath = [documentsdirectory stringbyappendingpathcomponent:file]; //this checkes string "file" list of selected files can matched contents of documents directory. nsdata *mydata = [nsdata datawithcontentsoffile:csvfilepath]; nslog(@"my nsdata %@",mydata); //check whether nsdata nil or not [mc addattachmentdata:mydata mimetype:@"text/csv" filename:file]; 
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