Replace ArrayList Values with new String Values

Question

i have a arraylist called arrstatus which has a set of Numeric values stored dynamically. I have to Replace those Numeric Values with Unique String values. I tried various methods it doesnt seem to be working i tries Set method, didnt work,

// int[] flags = new int[arrstatus_old.size()];

int [] c =  new int [arrtaskid.size()];
Toast.makeText(MyTask.this, "C:"+c, Toast.LENGTH_LONG).show(); 

     for(int j=1;j<= c.length;j++)
     {

        if(arrstatus.get(j).equals("1"))
         {
             arrstatus_old.set(j, "Saved");
         }
        else if(arrstatus.get(j).equals("2"))
        {
            arrstatus_old.set(j, "Assigned");
        }
        else if(arrstatus.get(j).equals("3"))
        {
            arrstatus_old.set(j, "Accepted");
        }
        else if(arrstatus.get(j).equals("4"))
        {
            arrstatus_old.set(j, "Rejected");
        }

     }

I am not getting the size of the arrastutus, it says 0 and hence no values are getting replaced, any better idea to replace the value.?

j<= c.length This might cause ArrayIndexOutOfBoundsException. — Maroun
– Maroun, Commented Jan 7, 2014 at 7:08
@ᴍarounᴍaroun - Not might.. it will (unless he gets some other exception before that..) :P — TheLostMind
– TheLostMind, Commented Jan 7, 2014 at 7:09

Prasad · Accepted Answer · 2014-01-07 09:12:28Z

1

Your ArrayList in which 1 i.e. numbers are stored should store numbers in String format.

Your arrayList should be like ArrayList<String>

        ArrayList<String> arrstatus = new ArrayList<String>();
        arrstatus.add("1");
        arrstatus.add("2");
        arrstatus.add("3");

As you are checking in arraylist using equals you'll have add numbers as a String.

if (arrstatus.get(i).equals("1")) {
    arrstatus.set(i, "Saved");
}if (arrstatus.get(i).equals("2")) {
    arrstatus.set(i, "Assigned");
}if (arrstatus.get(i).equals("3")) {
    arrstatus.set(i, "Accepted");
}

and so on...

edited Jan 7, 2014 at 9:12

answered Jan 7, 2014 at 7:10

Prasad

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4 Comments

user2728898 Over a year ago

i have ArrayList<String> arrstatus = new ArrayList<String>(); and the values are dynamically stored from server.

Prasad Over a year ago

@sanj Problem is with your arraylist to which you want to change. In order to change the element, it must contain the element that you are checking (In condition).

AJJ Over a year ago

@JavaLearner ArrayList.add(index, element) will shift the existing element the "index" position to right.. Refer docs.oracle.com/javase/6/docs/api/java/util/… he wants to replace the existing element

Prasad Over a year ago

@Jayaprasad I have edited my answer. It was written by mistake. Will u please remove your downvote?

learner · Accepted Answer · 2014-01-07 07:42:00Z

0

ArrayList<String> arrstatus = new ArrayList<String>();
        arrstatus.add("1");
        arrstatus.add("2");
        arrstatus.add("3");
arrstatus.add("4");

for(int j=0;j< c.length;j++)
     {

        if(arrstatus.get(j).equals("1"))
         {
             arrstatus_old.set(j, "Saved");
         }
        else if(arrstatus.get(j).equals("2"))
        {
            arrstatus_old.set(j, "Assigned");
        }
        else if(arrstatus.get(j).equals("3"))
        {
            arrstatus_old.set(j, "Accepted");
        }
        else if(arrstatus.get(j).equals("4"))
        {
            arrstatus_old.set(j, "Rejected");
        }

     }

answered Jan 7, 2014 at 7:42

learner

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