Question

What is the easiest way to export from an array to a CSV file? I was planning on using a for loop and inserting commas into the string, but realized I don’t know how to change the txt file into a CSV file. Thanks for the help!

Answer 1

I always use

NSString *csvString = [/*name of array*/ componentsJoinedByString:@","];

//Create file manager, pick path, etc

[/*name of file manager*/ createFileAtPath:/*file path*/ contents:[csvString dataUsingEncoding:NSUTF8StringEncoding] attributes:nil];

I only ever use it to create a .csv file from an array of floats or strings. If you have formatting characters in your data you might have to call an escape-addition method before you generate the .csv to get everything to look like you want.

If you want multiple lines in a .csv then you need to add \n at each line break (if you don’t already have it).