How to add a String to another String array in android?

Question

This my java code, here i have to add a string "RFID" in a String Array itemtypes and i have to stored it in an another string array item.But im getting an error.

  String[] itemtype;
  String[] item;
     \...........
      .........../
   try {
                response = (SoapPrimitive) envelope.getResponse();
                Koradcnos = response.toString();
            } catch (SoapFault e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            itemtypes = Koradcnos.split(";");
            item=itemtypes+"RFID";//here im getting error
        } catch (Exception er) {
            //Helper.warning("Error", er.toString(),this);
        }
         imageId = new int[itemtypes.length];
        for (int i = 0; i < itemtypes.length; i++)
            if (itemtypes[i].equals("Yarn")) {
                imageId[i] = R.drawable.yarnitem;

item is of the type String array, you cannot concatenate a String to it. You might want to use an ArrayList. — Uma Kanth
– Uma Kanth, Commented Jan 26, 2016 at 13:11
Still Im getting an error at index! What should i do now? How to rectify it ??Please give me a solution for this@shark — prabhu
– prabhu, Commented Jan 26, 2016 at 13:19

Viet · Accepted Answer · 2016-01-26 13:32:25Z

1

You need to work around for this :

Using with Arrays.copyOf

item =  Arrays.copyOf(itemtypes , itemtypes.length + 1);
item[item.length - 1] = "RFID";

Or direct split from Koradcnos

item = (Koradcnos + ";RFID").split(";");

answered Jan 26, 2016 at 13:32

Viet

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Comments

TeChNo_DeViL · Accepted Answer · 2016-01-26 13:21:16Z

0

You cannot concatenate string with a list String.split() method returns a String array.

Instead of item=itemtypes+"RFID" iterate through the array as:

for (int i=0; i < itemtypes.length();  i++) {
    item[i] = itemtypes[i] + "RFID";
}

Also I think the variable name will be itemtypes instead of itemtype

answered Jan 26, 2016 at 13:21

TeChNo_DeViL

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Comments

starkshang · Accepted Answer · 2016-01-26 13:29:27Z

0

itemtypes is String array,it can't be modified,if you want to get a new array adding another element,you can use System.arrayCopy

System.arraycopy(Object src,  
             int  srcPos,
             Object dest, 
             int destPos,
             int length)

Like this:

item = new String[itemtypes.length+1];
System.arraycopy(itemtypes,0,item,0,itemtypes.length);
item[itemtypes.length] = "RFID";

edited Jan 26, 2016 at 13:29

answered Jan 26, 2016 at 13:12

starkshang

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2 Comments

prabhu Over a year ago

It's showing an error(method call expected) at itemtypes.length()+1 in the above code.

starkshang Over a year ago

@prabhu,length is property,not method.

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