ios - How to write array data into excel file (CSV) in objective c -


i trying write array data excel (actually csv, opened in excel). used following code that:

nsmutablearray *list;     list = [[nsmutablearray alloc] init];  nsstring *string = [list componentsjoinedbystring:@","];  nsdata *data = [string datausingencoding:nsutf8stringencoding]; nsarray *paths = nssearchpathfordirectoriesindomains(nsdocumentdirectory, nsuserdomainmask, yes); nsstring *documentsdirectory = [paths objectatindex:0]; nsstring *appfile = [documentsdirectory stringbyappendingpathcomponent:@"yourfilename.csv"]; [data writetofile:appfile atomically:yes];

it works fine, problem have 20 objects in 'list' array , 20 objects written in side side cells. want write first 4 objects in 1 line , move new line , again write next 4 objects in line till objects in list array completed.

can me issue?

nsmutablearray *list = ...  nsmutablestring *buffer = [nsmutablestring string];  (nsuinteger = 0; < list.count; i++) {     nsstring *value = list[i];      if (i > 0) {        if (i % 4 == 0) { //after every 4th value           buffer.append("\n"); //end line        }        else {           buffer.append(",");        }     }      buffer.append(value);      //if values contain spaces, should add quotes around values...     //buffer.appendformat(@"\"%@\"", value); }  nsdata *data = [buffer datausingencoding:nsutf8stringencoding]; ...

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