Retrieve Arraylist to String Variable

Question

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 .

Have a look at this answer

Adil Soomro
– Adil Soomro

2012-03-28 11:46:33 +00:00
Commented Mar 28, 2012 at 11:46 — Adil Soomro
– Adil Soomro, Commented Mar 28, 2012 at 11:46

sunadorer · Accepted Answer · 2012-07-16 15:31:04Z

4

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);

answered Jul 16, 2012 at 15:31

sunadorer

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Comments

waqaslam · Accepted Answer · 2012-03-28 12:15:31Z

1

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();
}

edited Mar 28, 2012 at 12:15

answered Mar 28, 2012 at 11:45

waqaslam

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2 Comments

unkown Over a year ago

first of all i want to retrive data from array list to string

waqaslam Over a year ago

still, you need to use the same method, but first you need to get arrays out from your list. for e.g.: foreach(String[] array : myorderdata){ String line = join(array, ","); }

Oscar Castiblanco · Accepted Answer · 2012-03-28 11:53:31Z

0

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

    String result = sb.toString();

answered Mar 28, 2012 at 11:53

Oscar Castiblanco

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