//main
package com.example.xmljasonpro;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    Button btnparsexml,btnparsejson;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btnparsexml=(Button) findViewById(R.id.but1);
        btnparsejson=(Button) findViewById(R.id.but2);

        btnparsejson.setOnClickListener(this);
        btnparsexml.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        if(v.equals(btnparsejson))
        {
            Intent it=new Intent(this, MainActivity2.class);
            it.putExtra("mode",1);
            startActivity(it);
        }
        if(v.equals(btnparsexml))
        {
            Intent it=new Intent(this, MainActivity2.class);
            it.putExtra("mode",2);
            startActivity(it);
        }
    }
}
//main2
package com.example.xmljasonpro;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.widget.TextView;

import org.json.JSONException;
import org.json.JSONObject;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

import java.io.IOException;
import java.io.InputStream;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

public class MainActivity2 extends AppCompatActivity {
TextView txtXml,txtJson;
int mode=0;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);

        txtXml=(TextView) findViewById(R.id.txt_Xml);
        txtJson=(TextView) findViewById(R.id.txt_Json);

        mode=getIntent().getIntExtra("mode",0);

        if(mode==1)
            parsejson();
        else
            parsexml();

    }

    private void parsexml()
    {
        try
        {
            InputStream is = getAssets().open("input.xml");
            DocumentBuilderFactory db = DocumentBuilderFactory.newInstance();
            DocumentBuilder b = db.newDocumentBuilder();
            Document doc = b.parse(is);
            Element e = doc.getDocumentElement();
            e.normalize();

            NodeList list = doc.getElementsByTagName("weather");
            for (int i = 0; i < list.getLength(); i++) {
                Node n = list.item(i);
                if (n.getNodeType() == Node.ELEMENT_NODE) {
                    Element e1 = (Element) n;
                    txtXml.setText("city name: " + getValue("city_name", e1) + "\n");
                    txtXml.append("Latitude: " + getValue("Latitude", e1) + "\n");
                    txtXml.append("Longitude: " + getValue("Longitude", e1) + "\n");
                    txtXml.append("Temperature: " + getValue("Temperature", e1) + "\n");
                    txtXml.append("Humidity: " + getValue("Humidity", e1) + "\n");

                }
            }

        } catch (IOException e) {
            throw new RuntimeException(e);
        } catch (ParserConfigurationException e) {
            throw new RuntimeException(e);
        } catch (SAXException e) {
            throw new RuntimeException(e);
        }
    }

    private String getValue(String tag, Element e)
    {
      NodeList nl=e.getElementsByTagName(tag).item(0).getChildNodes();
      Node node=nl.item(0);
      return node.getNodeValue();
    }

    private void parsejson() {
        try{
            InputStream ip=getAssets().open("input.json");
            byte[] data=new byte[ip.available()];
            ip.read(data);
            String read_data=new String(data);
            JSONObject jo = new JSONObject(read_data);
            JSONObject jo1=jo.getJSONObject("weather");
            txtJson.setText("city_name:"+jo1.getString("city_name")+"\n");
            txtJson.append("latitude:"+jo1.getString("Latitude")+"\n");
            txtJson.append("longitude:"+jo1.getString("Longitude")+"\n");
            txtJson.append("Temperature:"+jo1.getString("Temperature")+"\n");
            txtJson.append("Humidity:"+jo1.getString("Humidity")+"\n");
        }
        catch (IOException | JSONException e)
        {
            throw new RuntimeException(e);
        }

    }
}