android - how do I add individual strings to a row in CSV file? -

i need csv, started learning how use yesterday, , can't find solution problem. have csv file array: "name, address, id", using opencsv. want able add corresponded strings in row below it. example, if user press button, name "david" added the csv file, , like:

"name,address,id"
"david"

and when user press other button, adress "3 street" added, like:

"name,address,id"
"david, 3 street"

and on, in end there list of names , address , id. can't figured out how , cant similar. maybe there way it?

let me try understand mean,

in scenario 1, should have name added, in scenario 2, should have name,address added,if understand?

this simple , quite achievable. firstly assuming have created row part in csv , saved sd-card

in next part should using arraylist write csv, check out code below

string csv = "c:\\work\\output.csv"; csvwriter writer = new csvwriter(new filewriter(csv));  list<string[]> data = new arraylist<string[]>(); data.add(new string[] {"india", "new delhi"}); data.add(new string[] {"united states", "washington d.c"}); data.add(new string[] {"germany", "berlin"});  writer.writeall(data);  writer.close(); 

take arraylist when scenario 2.

also create separate arraylist contain single column data , populate in same way scenario 1.

you need proper null-checks in scenario 1, else throw nullpointer exception.

most final approach create 2 separate methods

method1- writing single column data csv.(where should handle nullchecks)

method2-the sample code provided more reference http://www.codeproject.com/questions/491823/read-fwritepluscsvplusinplusplusandroid

hope works.