我如何不使用谷歌地图和其他地图来获取用户当前位置？

Question

我正在开发天气应用程序，当应用程序第一次推出时，我想检测用户当前位置，但我尝试使用谷歌地图，但他们要求信用卡，以获得谷歌地图的api密钥，不幸的是，我没有信用卡。你有其他的解决方案或替代方案吗。

Answer 1

Java中的简单代码。

import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;

import java.util.List;
import java.util.Locale;

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    location();
}
private void location() {
    Log.e("@@l", "location");
    LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
    LocationListener locationListener = new LocationListener() {
        public void onLocationChanged(Location location) {

            Log.e("@@", "onLocationChanged : " + location.getLatitude() + ", " + location.getLongitude());
            updateLocation(location);
        }

        public void onStatusChanged(String provider, int status, Bundle extras) {
        }

        public void onProviderEnabled(String provider) {
        }

        public void onProviderDisabled(String provider) {
        }
    };

    if (ActivityCompat.checkSelfPermission(this,
            Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
            ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) !=
                    PackageManager.PERMISSION_GRANTED) {

        return;
        }
        locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000, 0, locationListener);
    }

        public void updateLocation ( Location location){


        Geocoder geocoder = new Geocoder(getApplicationContext(), Locale.getDefault());
        try {
        List<Address> listAddresses = geocoder.getFromLocation(location.getLatitude(),location.getLongitude(),1);

        String address = " ";

        if (listAddresses != null && listAddresses.size() > 0) {

        if (listAddresses.get(0).getThoroughfare() != null) {

            address = listAddresses.get(0).getThoroughfare() + " ";
        }

        if (listAddresses.get(0).getLocality() != null) {

            address += listAddresses.get(0).getLocality() + " ";
        }

        if (listAddresses.get(0).getPostalCode() != null) {

            address += listAddresses.get(0).getPostalCode() + " ";
        }

        if (listAddresses.get(0).getAdminArea() != null) {

            address += listAddresses.get(0).getAdminArea();
        }
        }

        Log.i("Address",address);

        } catch (Exception e) {

        e.printStackTrace();

        }
        }
    }