MainActivity.java

package com.example.myapplication;

import android.Manifest;
import android.content.pm.PackageManager;
import android.location.Location;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.widget.Button;
import android.widget.Toast;

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

import com.google.android.gms.location.FusedLocationProviderClient;
import com.google.android.gms.location.LocationServices;

public class MainActivity extends AppCompatActivity {

    private static final int REQUEST_CODE = 123;
    private FusedLocationProviderClient fusedLocationClient;
    private final String emergencyNumber = "7775020914"; // 🔁 Your emergency contact

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

        fusedLocationClient = LocationServices.getFusedLocationProviderClient(this);

        Button sendButton = findViewById(R.id.sendButton);
        sendButton.setOnClickListener(v -> checkPermissionsAndSend());
    }

    private void checkPermissionsAndSend() {
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED ||
                ContextCompat.checkSelfPermission(this, Manifest.permission.SEND_SMS) != PackageManager.PERMISSION_GRANTED) {

            ActivityCompat.requestPermissions(this,
                    new String[]{Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.SEND_SMS},
                    REQUEST_CODE);
        } else {
            sendLocationSms();
        }
    }

    private void sendLocationSms() {
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            Toast.makeText(this, "Permission not granted", Toast.LENGTH_SHORT).show();
            return;
        }

        fusedLocationClient.getLastLocation().addOnSuccessListener(location -> {
            if (location != null) {
                String message = "🚨 I need help! My location: https://maps.google.com/?q=" +
                        location.getLatitude() + "," + location.getLongitude();

                try {
                    SmsManager smsManager = SmsManager.getDefault();
                    smsManager.sendTextMessage(emergencyNumber, null, message, null, null);
                    Toast.makeText(this, "Message sent!", Toast.LENGTH_LONG).show();
                } catch (Exception e) {
                    Toast.makeText(this, "Failed to send SMS: " + e.getMessage(), Toast.LENGTH_LONG).show();
                }
            } else {
                Toast.makeText(this, "Location is null", Toast.LENGTH_SHORT).show();
            }
        });
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
                                           @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);

        if (requestCode == REQUEST_CODE &&
                grantResults.length > 1 &&
                grantResults[0] == PackageManager.PERMISSION_GRANTED &&
                grantResults[1] == PackageManager.PERMISSION_GRANTED) {
            sendLocationSms();
        } else {
            Toast.makeText(this, "Permissions denied", Toast.LENGTH_SHORT).show();
        }
    }
}