CODEWITHSUNDEEP
javaandroidarraysstringfor-loop
Eram Nansovic
Eram Nansovic

Reputation: 27

Convert ArrayList Contents to String with Commas

Hello fellow programmers,

In my app I just deserialized an ArrayList from a text file and now I have an ArrayList with Strings. For design purposes I want to put the contents of the ArrayList into one organized string with comas and spaces.

I made an attempt at it but he app forcecloses and the LogCat pinpoints the error to this code:

FYI: OptionsText is an empty string and ListOptions is the ArrayList with the strings.

public void getOptionsText(){
        int i;
        OptionsText=ListOptions.get(1);
        for(i=2; i<ListOptions.size(); i++){
            OptionsText = OptionsText + ", " + ListOptions.get(i);
        }
        Options.setText(OptionsText);
    }

Upvotes: 0

Views: 129

Answers (3)

JHS
JHS

Reputation: 7871

Other than the other answers given by fellow SO users, you can also use the join method from the StringUtils class from org.apache.commons.lang.

OR

The join method from the Joiner class from com.google.common.base

Upvotes: 0

nmanandhan
nmanandhan

Reputation: 320

can you please try this...check if list is not null...

list.toString().replace("[", "").replace("]", "");

Upvotes: 0

Matt Ball
Matt Ball

Reputation: 359786

Just use ArrayList#toString():

public void getOptionsText() {
    String OptionsText = ListOptions.toString();
    Options.setText(OptionsText.substring(1, OptionsText.length-1);
}

Upvotes: 1

Related Questions