how to convert the data stored in string to string array

Question

I'm parsing an url using json. I'm getting the value of each tag and storing it in a string using getString in a for-loop.

What I want is to store the String value into a String array. I'm a noob as far as android development is concerned.

Below is the code:

JSONObject json = JsonFunctions.getJSONfromURL("http://www.skytel.mobi/stepheniphone/iphone/stephenFlickr.json");

try {
  JSONArray boombaby=json.getJSONArray("items");

  for(int i=0;i<boombaby.length();i++) {
     JSONObject e = boombaby.getJSONObject(i);
     mTitleName=e.getString("title");
     String mTitleImage=e.getString("image");
  }
}

Right now you are not even storing you are creating new string every time and throwing the other one somewhere in memory until GC picks it up :) — TeaCupApp
– TeaCupApp, Commented Nov 23, 2011 at 7:52

JB Nizet · Accepted Answer · 2011-11-23 07:50:05Z

3

Use a List to store your titles, and another to store your images. Or design a class holding two fields (title and image), and store instances of this class in a List:

List<String> titles = new ArrayList<String>();
List<String> images = new ArrayList<String>();
for (int i = 0; i < boombaby.length(); i++) {
    JSONObject e = boombaby.getJSONObject(i);
    titles.add(e.getString("title"));
    images.add(e.getString("image"));
}

Read the Java tutorial about collections. This is a must-know.

answered Nov 23, 2011 at 7:50

JB Nizet

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6 Comments

kingston Over a year ago

i stored it in arrayllist and it works fine..but what i want is to store it in string array..is it any way possible...

TeaCupApp Over a year ago

How about using HashMap<String,String> title can be key and value image! :)

TeaCupApp Over a year ago

open javadoc and read what different method a ArrayList has, you can convert into array easily by images.toArray();

JB Nizet Over a year ago

@kingston: an ArrayList offers more more than a simple array. If you have a List, there's (most of the time) no reason to transform it into an array. If you really want to, just use String[] array = list.toArray(new String[list.size()]); You could have found this yourself by just reading the javadoc: docs.oracle.com/javase/6/docs/api/java/util/List.html

kingston Over a year ago

the thing is i m doing lazy loading of images..i m reengineering a previously built code where a function call is of type String array..i tried to pass the function call as arraylist and this complicates the entire module and there comes a need to change the variables and function..it would be much simpler if i pass it in string array .is there any way to convert the array list into string...any help will be much appreciated

|

eeerahul · Accepted Answer · 2011-11-23 08:38:47Z

1

My solution:

String[] convert2StringArr(String str)
{
    if(str!=null&&str.length()>0)
    {
        String[] arr=new String[str.length()];
        for(int i=0;i<str.length();i++)
        {
            arr[i]=new String(str.charAt(i)+"");
        }
        return arr;
    }
    return null;
}

edited Nov 23, 2011 at 8:38

eeerahul

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answered Nov 23, 2011 at 8:27

DroidBoy

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1 Comment

st0le Over a year ago

This converts a string to a string array of its characters. This won't help the OP.

dku.rajkumar · Accepted Answer · 2011-12-23 05:51:55Z

0

List<String> titles = new ArrayList<String>();
List<String> images = new ArrayList<String>();
for (int i = 0; i < boombaby.length(); i++) {
    JSONObject e = boombaby.getJSONObject(i);
    titles.add(e.getString("title"));
    images.add(e.getString("image"));
}

and then convert list to array:

String[] titleArray = (String[])titles.toArray(new titles[titles.size()]);

String[] imageArray = (String[])images.toArray(new titles[images.size()]);

edited Dec 23, 2011 at 5:51

answered Nov 23, 2011 at 8:31

dku.rajkumar

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