I'm create a app to found where is the client (city, localization, route, ...) and to solve this i need make a request get to this website
https://nominatim.openstreetmap.org
on android studio with language java, its possible to make?
public class Player extends AppCompatActivity {
@Override
protected void onCreate(Bundle bundle) {
super.onCreate(bundle);
setContentView(R.layout.activity_client);
Background_DoWork();
}
private void Background_DoWork() {
ImageButton imgbtnBack = findViewById(R.id.BackActivity);
imgbtnBack.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
ActivityResultLauncher<String[]> locationPermissionRequest =
registerForActivityResult(new ActivityResultContracts
.RequestMultiplePermissions(), result -> {
Boolean fineLocationGranted = result.getOrDefault(
android.Manifest.permission.ACCESS_FINE_LOCATION, false);
Boolean coarseLocationGranted = result.getOrDefault(
android.Manifest.permission.ACCESS_COARSE_LOCATION, false);
if ((fineLocationGranted != null && fineLocationGranted) || (coarseLocationGranted != null && coarseLocationGranted)) {
LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
List<String> providers = lm.getProviders(true);
Location location = null;
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
lm.requestSingleUpdate(LocationManager.GPS_PROVIDER, new LocationListener() {
@Override
public void onLocationChanged(@NonNull Location location) {
double lat = location.getLatitude();
Log.d("lat: ", ""+lat);
double lng = location.getLongitude();
Log.d("lng: ", ""+lng);
String path = "https://nominatim.openstreetmap.org/reverse?lat=" + lat +
"&lon=" + lng + "&format=json&extratags=1";
try {
/* Make the request here*/
}
catch (Exception ex) {
}
}
}, null);
}
});
locationPermissionRequest.launch(new String[] {
android.Manifest.permission.ACCESS_FINE_LOCATION,
android.Manifest.permission.ACCESS_COARSE_LOCATION
});
}
}
I would like a simple request get, to understand from future projects.
It's simple to make a request get with okhttp3:
public class Client extends AppCompatActivity {
@Override
protected void onCreate(Bundle bundle) {
//Toast.makeText(getApplicationContext(), "Clicado o 2", Toast.LENGTH_LONG).show();
super.onCreate(bundle);
setContentView(R.layout.activity_client);
Background_DoWork();
}
private final int Fine_Permision_Code = 1;
private GoogleMap myMap;
Location location;
FusedLocationProviderClient fs;
private void Background_DoWork() {
ImageButton imgbtnBack = findViewById(R.id.BackActivity);
imgbtnBack.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
ActivityResultLauncher<String[]> locationPermissionRequest =
registerForActivityResult(new ActivityResultContracts
.RequestMultiplePermissions(), result -> {
Boolean fineLocationGranted = result.getOrDefault(
android.Manifest.permission.ACCESS_FINE_LOCATION, false);
Boolean coarseLocationGranted = result.getOrDefault(
android.Manifest.permission.ACCESS_COARSE_LOCATION, false);
if ((fineLocationGranted != null && fineLocationGranted) || (coarseLocationGranted != null && coarseLocationGranted)) {
LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
List<String> providers = lm.getProviders(true);
Location location = null;
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
lm.requestSingleUpdate(LocationManager.GPS_PROVIDER, new LocationListener() {
@Override
public void onLocationChanged(@NonNull Location location) {
double lat = location.getLatitude();
Log.d("lat: ", ""+lat);
double lng = location.getLongitude();
Log.d("lng: ", ""+lng);
String path = "https://nominatim.openstreetmap.org/reverse?lat=" + lat + "&lon=" + lng + "&format=json&extratags=1";
try {
Request rq = new Request.Builder().url(path).build();
OkHttpClient client = new OkHttpClient();
client.newCall(rq).enqueue(new Callback() {
@Override
public void onFailure(@NonNull Call call, @NonNull IOException e) {
Log.d("Error", ""+e);
}
@Override
public void onResponse(@NonNull Call call, @NonNull Response response) throws IOException {
Log.d("Message", ""+response);
}
});
}
catch (Exception ex) {
Log.d("s", ""+ex);
}
finally {
//urlConnection.disconnect();
}
}
}, null);
}
});
locationPermissionRequest.launch(new String[] {
android.Manifest.permission.ACCESS_FINE_LOCATION,
android.Manifest.permission.ACCESS_COARSE_LOCATION
});
}
}
I recomend read the documentation of okhttp