How to use Dictionary (like iphone NSDictionary) in android?

Question

I have worked in soap message, and to parse the value from Webservice, the values are stored in ArrayList.

Example: values are Employee name (Siva) and Employee id (3433fd), these two values are stored in arraylist, but I want to stored in Dictionary, How?

confucius · Accepted Answer · 2013-11-17T00:53:37.180

82

you can use HashMap like this

Map <String,String> map =  new HashMap<String,String>();
//add items 
map.put("3433fd","Siva");
//get items 

String employeeName =(String) map.get("3433fd");

edited Nov 17 '13 at 00:53

answered Jan 14 '12 at 09:03

confucius

13,127
10
47
66

is that what you are looking for? – confucius Jan 14 '12 at 09:05
these is also like (iPhone Dictionary) – Sampath Kumar Jan 14 '12 at 09:07
1

I believe the map object method for adding key value pairs is 'put', not 'add' – Conor Patrick Nov 16 '13 at 01:42

score 11 · Answer 2 · answered Jan 14 '12 at 09:08

11

You can use Bundle.

as it offers String to various types of Mapping.

Bundle b = new Bundle();
b.putInt("identifier", 121);
b.putString("identifier", "Any String");
b.putStringArray("identifier", stringArray);

int i = b.getInt("identifier");
...

answered Jan 14 '12 at 09:08

Adil Soomro

37,609
9
103
153

Thanks. A lot of answers point to hash map but actually I think bundle is more similar to dictionary because it allows more types of variables – Shayno Jul 30 '17 at 14:35

score 6 · Answer 3 · answered Jan 20 '12 at 03:39

 public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        EditText textview = (EditText) findViewById(R.id.editTextHash);
        EditText textviewNew = (EditText) findViewById(R.id.editTextHash2);

        Map<String, String> map = new HashMap<String,String>();
        map.put("iOS", "100");
        map.put("Android", "101");
        map.put("Java", "102");
        map.put(".Net", "103");

        String TextString = "";
       // Set<E> keys = map.keySet();

       Set keys = map.keySet();
       System.out.println("keys "+keys);
        for (Iterator i = keys.iterator(); i.hasNext();) 
        {
            String key = (String) i.next();
            System.out.println("key "+key);
            String value = (String) map.get(key);
            System.out.println("value "+value);
            textview.append(key + " = " + value);
            TextString+=(key + " = " + value); 
        }
        //textviewNew.setText(TextString);

//        Iterator iterator = map.keySet().iterator();
//        
//        while (iterator.hasNext()) 
//        {
//          String object = (String) iterator.next();
//          textview.setText(object);
//      }
//        
//        //textview.setText(map.get("Siva"));
//        
//        System.out.println(map);

    }
}

Shabeer Ali · Answer 4 · 2015-04-21T06:01:09.980

A Dictionary is an abstract class that maps keys to values and there is Dictionary Class in android refer link you can find a note at Class Overview

Do not use this class since it is obsolete. Please use the Map interface for new implementations.

An attempt to insert either a null key or a null value to a dictionary will result to a NullPointerException,but you can use Map interface,it provides the exact same functionality of a dictionary.you can use it as bellow

//put values
Map Message = new HashMap();
Message.put("title", "Test message");
Message.put("description", "message description");
Message.put("email", "email@gmail.com");
//get values
Log.d("get Message","Message title -"+Message.get("title"));

you can also use A custom class as below

public class MessageObject {
    String title;
    String description;
    String email;
}

you can use Getters and Setters to get and put values,not needed to remember the key names every time you may get some other advantages by this way.

How to use Dictionary (like iphone NSDictionary) in android?

4 Answers4