An example code of kotlin dom xml parser for android given below. You can just follow the code and hard code by yourself, which is the best idea. But, also you can clone it from github…
STEP 1:
At first, Create the XML file name, empdetail.xml in src/main/assets directory to parse the data using DOM parser.If there is no such directory, create one. and the code can be like :
<?xml version=”1.0″ encoding=”utf-8″?>
<emplayers>
<player>
<name>Tazwar Utshas</name>
<ratings>550</ratings>
<role>Captain</role>
</player>
<player>
<name>Matthew Hayden</name>
<ratings>455</ratings>
<role>Opener</role>
</player>
<player>
<name>Habibul Basher</name>
<ratings>555</ratings>
<role>Vice Captain</role>
</player>
<player>
<name>Khaled Masud</name>
<ratings>425</ratings>
<role>Wicket Keeper</role>
</player>
<player>
<name>Md. Rafiq</name>
<ratings>350</ratings>
<role>Spinner</role>
</player>
<player>
<name>Mashrafee Mortaza</name>
<ratings>650</ratings>
<role>Pacer</role>
</player>
<player>
<name>Wasim Akram</name>
<ratings>750</ratings>
<role>All Rounder</role>
</player>
<player>
<name>Sachin Tendulker</name>
<ratings>550</ratings>
<role>Middle Order</role>
</player>
<player>
<name>Ricky Ponting</name>
<ratings>650</ratings>
<role>Middle Order</role>
</player>
<player>
<name>Adam Gilchrist</name>
<ratings>750</ratings>
<role>Opener</role>
</player>
<player>
<name>Kumara Sangakkara</name>
<ratings>550</ratings>
<role>Keeper Batsman</role>
</player>
<player>
<name>Sanath Jayasuria</name>
<ratings>755</ratings>
<role>Back up opener</role>
</player>
<player>
<name>Shoaib Akhter</name>
<ratings>650</ratings>
<role>Pacer</role>
</player>
<player>
<name>Brett Lee</name>
<ratings>750</ratings>
<role>Pacer</role>
</player>
</emplayers>
Step 2:
Now, create a custom row for listview named custom_list.xml. The code will be somewhat like this:
<?xml version=”1.0″ encoding=”utf-8″?>
<LinearLayout xmlns:android=”http://schemas.android.com/apk/res/android”
xmlns:app=”http://schemas.android.com/apk/res-auto”
android:layout_width=”match_parent”
android:layout_height=”match_parent”
android:orientation=”horizontal”>
<LinearLayout
android:layout_width=”match_parent”
android:layout_height=”wrap_content”
android:layout_weight=”1″
android:background=”#eee”
android:paddingBottom=”2dp”
android:orientation=”vertical”>
<TextView
android:id=”@+id/name”
android:layout_width=”match_parent”
android:layout_height=”wrap_content”
android:text=”name”
android:textStyle=”bold”
android:layout_marginLeft=”15dp”
android:layout_marginStart=”15dp”
android:textAppearance=”@style/Base.TextAppearance.AppCompat.Medium” />
<TextView
android:id=”@+id/ratings”
android:layout_width=”match_parent”
android:layout_height=”wrap_content”
android:text=”rating”
android:layout_marginLeft=”15dp”
android:layout_marginStart=”15dp”
android:layout_marginTop=”5dp”
android:textSize=”15sp”/>
<TextView
android:id=”@+id/role”
android:layout_width=”match_parent”
android:layout_height=”wrap_content”
android:text=”role”
android:layout_marginLeft=”15dp”
android:layout_marginStart=”15dp”
android:layout_marginTop=”5dp”
android:textSize=”15sp”/>
</LinearLayout>
</LinearLayout>
Step 3:
Now, code your activity_main.xml very simply just with a listview, like this:
<?xml version=”1.0″ encoding=”utf-8″?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android=”http://schemas.android.com/apk/res/android”
xmlns:tools=”http://schemas.android.com/tools”
xmlns:app=”http://schemas.android.com/apk/res-auto”
android:layout_width=”match_parent”
android:layout_height=”match_parent”
tools:context=”.MainActivity”>
<ListView
android:layout_width=”match_parent”
android:layout_height=”match_parent”
android:id=”@+id/listView”>
</ListView>
</androidx.constraintlayout.widget.ConstraintLayout>
Step 4:
Finally, code your MainActivity.kt like this:
package com.example.xmlparse
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.ArrayAdapter
import android.widget.SimpleAdapter
import android.widget.ListView
import org.w3c.dom.Element
import org.w3c.dom.Node
import org.xml.sax.SAXException
import java.io.IOException
import javax.xml.parsers.DocumentBuilderFactory
import javax.xml.parsers.ParserConfigurationException
class MainActivity : AppCompatActivity() {
var empDataHashMap = HashMap<String, String>()
var empList: ArrayList<HashMap<String,String>> = ArrayList()
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
try{
val lv =findViewById<ListView>(R.id.listView)
val istream = assets.open(“empdetail.xml”)
val builderFactory = DocumentBuilderFactory.newInstance()
val docBuilder = builderFactory.newDocumentBuilder()
val doc = docBuilder.parse(istream)
// reading player tags
val nList = doc.getElementsByTagName(“player”)
for(i in 0 until nList.length)
{
if(nList.item(0).nodeType.equals(Node.ELEMENT_NODE))
{
empDataHashMap = HashMap()
val element = nList.item(i) as Element
empDataHashMap.put(“name”, getNodeValue(“name”,element))
empDataHashMap.put(“ratings”, getNodeValue(“ratings”,element))
empDataHashMap.put(“role”, getNodeValue(“role”,element))
empList.add(empDataHashMap)
}
}
val adapter = SimpleAdapter(this@MainActivity, empList, R.layout.custom_list, arrayOf(“name”, “ratings”, “role”), intArrayOf(R.id.name, R.id.ratings, R.id.role))
lv.setAdapter(adapter)
}
catch (e: IOException){
e.printStackTrace()
}
catch (e: ParserConfigurationException) {
e.printStackTrace()
} catch (e: SAXException) {
e.printStackTrace()
}
}
//return node value
protected fun getNodeValue(tag: String, element: Element): String{
val nodeList = element.getElementsByTagName(tag)
val node = nodeList.item(0)
if(node != null){
if(node.hasChildNodes()){
val child = node.firstChild
while(child!=null){
if(child.nodeType === org.w3c.dom.Node.TEXT_NODE)
{
return child.nodeValue
}
}
}
}
return “”
}
}
Output will look something like this:
That’s all for “an example code of kotlin dom xml parser for android”. You can now change and modify things as you need and if you face any problem, you can just keep it in the comment box…
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