Android Dynamic Array

I am parsing an XML file through Android Pull Parser technique. First, have a look at the below XML file:

<childs>
    <students>
        <name> hello </name>
        <address> xyz </address>
    </stdents>      

    <students>
        <name> abc </name>
        <address> def </address>
    </stdents>      

</childs>

Consider that I'm parsing the above file. Now, my problem is that I want to create a separate array for name and address. So while parsing, I want to store 1st student's data in name[0] and address[0] and the next student's data in name[1] and address[1]. In short, array size is extending as more data is parsed.

Is there any way to do so? I mean to create a dynamic extendable array? Or if there is another way to do so then please help me to fight with this problem.

You could use Vector<String> and then (if you need an array) copy the data to array(s) using toArray method.

    Vector<String> v = new Vector<String>();
    for (int i=0; i<10; i++)
        v.add(new String(Integer.toString(i)));

    Object s[] = v.toArray();

    for(int i=0; i<10; i++)
        str = s[i].toString();

Another option:

    String a[] = {};
    v.toArray(a);

Java - best way to implement a dynamic-size array of objects, This is particularly important when the data is big and the platform is small (like a handheld Android thingy). Compare this: ArrayList<Integer>� Now say we append 4 items to our dynamic array. At this point, our dynamic array has a length of 4. But the underlying array has a length of 10. We'd say this dynamic array's size is 4 and its capacity is 10. The dynamic array stores an endIndex to keep track of where the dynamic array ends and the extra capacity begins.

You use and List array like this

List<String> name=new ArrayList<String>();
List<String> address=new ArrayList<String>(); 
name.add(StudyParser.getValue(eimg, "name"));  
address.add(StudyParser.getValue(eimg,"address")

where StudyParser.getValue(); is method which u call to get data

[Solved] Dynamic Array in Android, Hide Copy Code. Field[] ID_Fields = R.drawable.class.getFields(); int[] resArray = new int[ID_Fields.length]; for(int i = 0; i < ID_Fields.length; i++)� In Java, Arrays are of fixed size. The size of the array will be decided at the time of creation. But if you still want to create Arrays of variable length you can do that using collections like array list.

The most simple method to create an unlimited size array is using String Builder. This allow you to add many elements in runtime. It has 3 major components.

  1. Decleration and Initialization.
  2. Value addition/ Append
  3. Print out/ Usage

Use the bellow code anywhere in Android Studio.

//Basic Decleration
        StringBuilder myString = new StringBuilder();
        
//Adding data
       myString.append("Hello text <br>");
        myString.append("some more data <br>");
        myString.append("more data to store <br>");
        
//Displaying in already created text view
        deviceDetails.setText(Html.fromHtml(callLogs+""));
       

Dynamic Array Java Example, An Array is a container object that holds a fixed number of values of a single type. A dynamic array is a variable-size list data structure that allows elements to be added or removed. Since the size of an array is fixed you cannot add elements to it dynamically. But, if you still want to do it then, Convert the array to ArrayList object. Add the required element to the array list. Convert the Array list to array. Example

Getting dynamic with arrays, Let's look at an example of declaring and initializing arrays dynamically. A dynamic array example. Let's make a really simple dynamic array example. You can get� When we initialize a dynamic array, the dynamic array implementation creates an understood fixed-size array. The initial size corresponds to the implementation. For example, let us make our implementation array to use 10 indices. Now we append four items to our dynamic array. Now, our dynamic array has a length of four.

What is Dynamic Array in Java? | How do they Work?, The dynamic array in Java is a type of an array with a huge improvement for automatic resizing. The only limitation of arrays is that it is a fixed� Excel formulas that return a set of values, also known as an array, return these values to neighboring cells. This behavior is called spilling. Formulas that can return arrays of variable size are called dynamic array formulas. Formulas that are currently returning arrays that are successfully spilling can be referred to as spilled array formulas.

How to Create an ArrayList in Java, An ArrayList is a re-sizable array, also known as a dynamic array. It raises its size Output: [JAVA, Csharp, Python, Php, Android, C++, HTML]� tnx, myList = Arrays.toList(stringArray); has error:The method toList(String[]) is undefined for the type Arrays – elia Sep 10 '13 at 21:07 And remember that length returns the NUMBER of elements and NOT the last element position like it's the case in some other languages. {"foo", "bar"} has a length of 2 and not 1.

Comments
  • @Marcin Gil but i exacly want as separated array becoz want to display the array data in "ListAdapter"
  • Why not use ArrayAdapter<T> that can take List as argument? If you plan to use ListView that would be no problem.
  • @Marcin Gil but i have implemented with "BaseAdapter" becoz i am making customization to the listview as image with 2 textviews
  • @Asahi thanx a lot...now let me try it out in my problem way
  • However you should probably use ArrayList instead of Vector as Vector is syncronized.
  • @Asahi Thanx a lot...You saved my life finally i have implemented Vector and then converted it into Array
  • But however...if any better and appropriate solution also welcomed
  • ArrayList is also an option - depending on your requirements to synchronization