Untitled

package com.rafsanahsan.lab3cse489;

import androidx.appcompat.app.AppCompatActivity;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.webkit.WebView;

import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;

import java.util.ArrayList;
import java.util.List;

public class MyAttendanceActivity extends Activity {
    private WebView webview;
    private String URL = "http://www.muthosoft.com/univ/attendance/report.php";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_my_attendance);
        webview = findViewById(R.id.webview);
        String[] keys = {"CSE489-Lab","year","semester","course","section","sid"};
        String[] values = {"true","2022","1","CSE489","1","2019360003"};
        httpRequest(keys,values);
    }
    @SuppressLint("StaticFieldLeak")
    private void httpRequest(final String key[], final String values[]){
        new AsyncTask<Void, Void, String>(){
            @Override
            protected String doInBackground(Void... param){
                try {
                    List<NameValuePair>params = new ArrayList<NameValuePair>();
                    for (int i =0; i<key.length; i++){
                        params.add(new BasicNameValuePair(key[i],values[i]));
                    }
                    String data = JSONParser.getInstance().makeHttpRequest(URL, "POST", params);
                    return data;
                }catch (Exception ex){
                    ex.printStackTrace();
                }
                return null;
            }
            @Override
            protected void onPostExecute(String data){
                if (data != null){
                    try{
                        webview.loadData(data, "text/html", "UTF-8");
                    }catch (Exception e){
                        e.printStackTrace();
                    }
                }
            }
        }.execute();
    }
}