MainActivity.java

package net;

import android.Manifest;
import android.content.pm.PackageManager;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;
import androidx.core.content.ContextCompat;

import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    private static final int PERMISSIONS_REQUEST_CODE = 1;
    private static final String TAG = "MainActivity";

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

        if (checkPermissions()) {
            saveNetworkProfilesToExcel();
        }
    }

    private boolean checkPermissions() {
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_WIFI_STATE) != PackageManager.PERMISSION_GRANTED ||
            ContextCompat.checkSelfPermission(this, Manifest.permission.CHANGE_WIFI_STATE) != PackageManager.PERMISSION_GRANTED ||
            ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED ||
            ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {

            ActivityCompat.requestPermissions(this, new String[]{
                Manifest.permission.ACCESS_WIFI_STATE,
                Manifest.permission.CHANGE_WIFI_STATE,
                Manifest.permission.WRITE_EXTERNAL_STORAGE,
                Manifest.permission.READ_EXTERNAL_STORAGE
            }, PERMISSIONS_REQUEST_CODE);
            return false;
        }
        return true;
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == PERMISSIONS_REQUEST_CODE) {
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                saveNetworkProfilesToExcel();
            } else {
                Toast.makeText(this, "Permissions denied", Toast.LENGTH_SHORT).show();
            }
        }
    }

    private void saveNetworkProfilesToExcel() {
        WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(WIFI_SERVICE);
        List<WifiConfiguration> configuredNetworks = wifiManager.getConfiguredNetworks();

        Workbook workbook = new XSSFWorkbook();
        Sheet sheet = workbook.createSheet("Network Profiles");
        Row header = sheet.createRow(0);
        header.createCell(0).setCellValue("SSID");
        header.createCell(1).setCellValue("Password");

        int rowIndex = 1;
        for (WifiConfiguration config : configuredNetworks) {
            Row row = sheet.createRow(rowIndex++);
            row.createCell(0).setCellValue(config.SSID);
            row.createCell(1).setCellValue(config.preSharedKey);
        }

        File file = new File(Environment.getExternalStorageDirectory(), "network_profiles.xlsx");
        try (FileOutputStream fos = new FileOutputStream(file)) {
            workbook.write(fos);
            Toast.makeText(this, "Profiles saved to " + file.getAbsolutePath(), Toast.LENGTH_LONG).show();
        } catch (IOException e) {
            Log.e(TAG, "Failed to save profiles to Excel", e);
            Toast.makeText(this, "Failed to save profiles", Toast.LENGTH_SHORT).show();
        }
    }
}