CODEWITHSUNDEEP
androidstringarraylist
unkown
unkown

Reputation: 1128

Retrieve Arraylist to String Variable

I have arraylist "myorderdata". I want to retrieve this arraylist to one String variable and want "," separator between each value retrieve from array list .

I have tried to do this with String[] y = myorderdata.toArray(new String[0]); but this doesn't work . Can anyone help me ? Thanks in advance .

Upvotes: 0

Views: 1274

Answers (3)

sunadorer
sunadorer

Reputation: 3892

Here's another variation to solve this task. Android offers two util methods to join the elements of an array or an Iterable in the class TextUtils.

// Join the elements of myorderdata and separate them with a comma:
String joinedString = TextUtils.join(",", myorderdata);

Upvotes: 4

waqaslam
waqaslam

Reputation: 68177

Use this method to join arrays:

//for List of strings
public static String join(List<String> listStrings, String separator) {
  String[] sl = (String[]) listStrings.toArray(new String[]{});

  return join(sl, separator);
}


/**
 * Joins an array of string with the given separator
 * @param strings array of string
 * @param separator string to join with
 * @return a single joined string from array 
 */
public static String join(String[] strings, String separator) {
    StringBuffer sb = new StringBuffer();
    for (int i=0; i < strings.length; i++) {
        if (i != 0) sb.append(separator);
        sb.append(strings[i]);
    }
    return sb.toString();
}

Upvotes: 1

Oscar Castiblanco
Oscar Castiblanco

Reputation: 1646

StringBuffer sb = new StringBuffer();
    for( String string : myorderdata )
    {
        sb.append( string );
        sb.append( "," );           
    }
    sb.deleteCharAt( sb.length() );

    String result = sb.toString();

Upvotes: 0

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