Aktueller Standort nicht automatische Anzeige der Textansicht

Question

Momentan möchte ich den Benutzer aktuelle Position von Breiten- und Längengrad bekommen, aber mein Code kann bekommen, bis ich die Senden-Taste in der Emulator-Einstellung gedrückt habe, aber was ich will, ist automatisch den Standort zu bekommen setze es auf textview, was soll ich tun? Bitte rate mir bitte, dieses Problem zu lösen, da ich den Standortcode nicht kenne.

Hier ist mein Code

package com.example.rex.ota30; 

import android.*; 
import android.Manifest; 
import android.content.Context; 
import android.content.DialogInterface; 
import android.content.Intent; 
import android.content.pm.PackageManager; 
import android.location.Location; 
import android.location.LocationListener; 
import android.location.LocationManager; 
import android.provider.Settings; 
import android.support.v4.app.ActivityCompat; 
import android.support.v7.app.AlertDialog; 
import android.support.v7.app.AppCompatActivity; 
import android.os.Bundle; 
import android.util.Log; 
import android.widget.TextView; 
import android.widget.Toast; 

import com.google.firebase.database.DatabaseReference; 
import com.google.firebase.database.FirebaseDatabase; 

import static com.example.rex.ota30.R.id.textView; 

public class Search extends AppCompatActivity implements LocationListener { 

private FirebaseDatabase db; 
private DatabaseReference sref, lref; 
private TextView searchun, searchlo, searchla; 
private String un, la, lo; 
private LocationManager lm; 
private LocationListener ll; 

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

    db = FirebaseDatabase.getInstance(); 

    sref = db.getReference("users"); 
    lref = db.getReference("userslocation"); 

    searchun = (TextView) findViewById(R.id.sun); 
    Intent i = this.getIntent(); 
    un = i.getStringExtra("username"); 
    searchun.setText(un); 

    searchlo = (TextView) findViewById(R.id.slo); 
    searchla = (TextView) findViewById(R.id.sla); 

    lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { 

     return; 
    } 
    lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, (LocationListener) this); 
} 

@Override 
public void onLocationChanged(Location location) { 

    la = String.valueOf(location.getLatitude()); 
    searchla.setText(la); 

    lo = String.valueOf(location.getLongitude()); 
    searchlo.setText(lo); 

    lref.child(un).child("latitude").setValue(la); 
    lref.child(un).child("longitude").setValue(lo); 
} 

@Override 
public void onProviderDisabled(String provider) { 
    Log.d("Latitude","disable"); 
} 

@Override 
public void onProviderEnabled(String provider) { 
    Log.d("Latitude","enable"); 
} 

@Override 
public void onStatusChanged(String provider, int status, Bundle extras) { 
    Log.d("Latitude","status"); 
} 
} 

Hier ist die Probe der bekommen Lage.

Answer 1

OnLocationChanged wird nur aufgerufen, wenn der Standort geändert hat.
So wird die Position in der Textansicht nur angezeigt, wenn die Senden-Taste gedrückt wird.
Wenn Sie den Speicherort von Anfang an angezeigt werden sollen, versuchen Sie diesen

protected void onCreate(Bundle savedInstanceState) { 
    ... 
    lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, (LocationListener) this); 
    ... 
    // add code 
    Location location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER); 
    la = String.valueOf(location.getLatitude()); 
    searchla.setText(la); 

    lo = String.valueOf(location.getLongitude()); 
    searchlo.setText(lo); 
} 

Answer 2

import android.content.pm.PackageManager; 
import android.location.Location; 
import android.support.annotation.NonNull; 
import android.support.annotation.Nullable; 
import android.support.v4.app.ActivityCompat; 
import android.support.v4.app.FragmentActivity; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.widget.Toast; 

import com.google.android.gms.common.ConnectionResult; 
import com.google.android.gms.common.api.GoogleApiClient; 
import com.google.android.gms.location.LocationServices; 
import com.google.android.gms.maps.CameraUpdateFactory; 
import com.google.android.gms.maps.GoogleMap; 
import com.google.android.gms.maps.OnMapReadyCallback; 
import com.google.android.gms.maps.SupportMapFragment; 
import com.google.android.gms.maps.model.LatLng; 
import com.google.android.gms.maps.model.Marker; 
import com.google.android.gms.maps.model.MarkerOptions; 

public class MapsActivity extends FragmentActivity implements OnMapReadyCallback, 
     GoogleApiClient.ConnectionCallbacks, 
     GoogleApiClient.OnConnectionFailedListener, 
     GoogleMap.OnMarkerDragListener, 
     GoogleMap.OnMapLongClickListener, 
     GoogleMap.OnMarkerClickListener, 
     View.OnClickListener { 

    private static final String TAG = "MapsActivity"; 
    private GoogleMap mMap; 
    private double longitude; 
    private double latitude; 
    private GoogleApiClient googleApiClient; 


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

     // Obtain the SupportMapFragment and get notified when the map is ready to be used. 
     SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager() 
       .findFragmentById(R.id.map); 
     mapFragment.getMapAsync(this); 

     //Initializing googleApiClient 
     googleApiClient = new GoogleApiClient.Builder(this) 
       .addConnectionCallbacks(this) 
       .addOnConnectionFailedListener(this) 
       .addApi(LocationServices.API) 
       .build(); 
    } 


    @Override 
    public void onMapReady(GoogleMap googleMap) { 
     mMap = googleMap; 
     mMap.setMapType(GoogleMap.MAP_TYPE_HYBRID); 
     // googleMapOptions.mapType(googleMap.MAP_TYPE_HYBRID) 
        // .compassEnabled(true); 

     // Add a marker in Sydney and move the camera 
     LatLng india = new LatLng(-34, 151); 
     mMap.addMarker(new MarkerOptions().position(india).title("Marker in India")); 
     mMap.moveCamera(CameraUpdateFactory.newLatLng(india)); 
     mMap.setOnMarkerDragListener(this); 
     mMap.setOnMapLongClickListener(this); 
    } 

    //Getting current location 
    private void getCurrentLocation() { 
     mMap.clear(); 
     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) { 
      // TODO: Consider calling 
      // ActivityCompat#requestPermissions 
      // here to request the missing permissions, and then overriding 
      // public void onRequestPermissionsResult(int requestCode, String[] permissions, 
      //           int[] grantResults) 
      // to handle the case where the user grants the permission. See the documentation 
      // for ActivityCompat#requestPermissions for more details. 
      return; 
     } 
     Location location = LocationServices.FusedLocationApi.getLastLocation(googleApiClient); 
     if (location != null) { 
      //Getting longitude and latitude 
      longitude = location.getLongitude(); 
      latitude = location.getLatitude(); 

      //moving the map to location 
      moveMap(); 
     } 
    } 

    private void moveMap() { 
     /** 
     * Creating the latlng object to store lat, long coordinates 
     * adding marker to map 
     * move the camera with animation 
     */ 
     LatLng latLng = new LatLng(latitude, longitude); 
     mMap.addMarker(new MarkerOptions() 
       .position(latLng) 
       .draggable(true) 
       .title("Marker in India")); 

     mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng)); 
     mMap.animateCamera(CameraUpdateFactory.zoomTo(15)); 
     mMap.getUiSettings().setZoomControlsEnabled(true); 


    } 

    @Override 
    public void onClick(View view) { 
     Log.v(TAG,"view click event"); 
    } 

    @Override 
    public void onConnected(@Nullable Bundle bundle) { 
     getCurrentLocation(); 
    } 

    @Override 
    public void onConnectionSuspended(int i) { 

    } 

    @Override 
    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) { 

    } 

    @Override 
    public void onMapLongClick(LatLng latLng) { 
     // mMap.clear(); 
     mMap.addMarker(new MarkerOptions().position(latLng).draggable(true)); 
    } 

    @Override 
    public void onMarkerDragStart(Marker marker) { 
     Toast.makeText(MapsActivity.this, "onMarkerDragStart", Toast.LENGTH_SHORT).show(); 
    } 

    @Override 
    public void onMarkerDrag(Marker marker) { 
     Toast.makeText(MapsActivity.this, "onMarkerDrag", Toast.LENGTH_SHORT).show(); 
    } 

    @Override 
    public void onMarkerDragEnd(Marker marker) { 
     // getting the Co-ordinates 
     latitude = marker.getPosition().latitude; 
     longitude = marker.getPosition().longitude; 

     //move to current position 
     moveMap(); 
    } 

    @Override 
    protected void onStart() { 
     googleApiClient.connect(); 
     super.onStart(); 
    } 

    @Override 
    protected void onStop() { 
     googleApiClient.disconnect(); 
     super.onStop(); 
    } 


    @Override 
    public boolean onMarkerClick(Marker marker) { 
     Toast.makeText(MapsActivity.this, "onMarkerClick", Toast.LENGTH_SHORT).show(); 
     return true; 
    } 

}