我一直在努力获取当前的位置信息,并按照Google的建议使用了Fused位置提供商,但我无法获得任何更新。我在网上彻底搜索过但无法找到任何解决方案。融合提供商返回的位置甚至不在我所在的位置,它显示了其他一些国家。任何人都可以帮助我吗?
public class MainActivity extends AppCompatActivity implements GoogleApiClient.OnConnectionFailedListener ,
LocationListener, GoogleApiClient.ConnectionCallbacks{
private LocationRequest mLocationRequest;
private GoogleApiClient mGoogleApiClient;
private TextView mLocationTextView;
private static final int LOC_PERMISSION_CODE = 100;
private Location mCurrentLocation;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
createLocationRequest();
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
mGoogleApiClient.connect();
mLocationTextView = (TextView) findViewById(R.id.location);
}
private boolean isLocationProviderAvailable(){
LocationManager lm = (LocationManager) getSystemService(LOCATION_SERVICE);
return lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER) || lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
}
private void requestLocation() {
if (!hasLocationPermission()) {
ActivityCompat.requestPermissions(this, new String[]{ACCESS_FINE_LOCATION}, LOC_PERMISSION_CODE);
}else {
if(!isLocationProviderAvailable()){
AlertDialog dialog = new AlertDialog.Builder(this)
.setTitle("No location service")
.setMessage("Location adapters are turned off. Please turn on and try again.")
.setIcon(R.drawable.location_icon)
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
finish();
}
})
.create();
dialog.show();
}else {
//noinspection MissingPermission
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
}
}
private boolean hasLocationPermission(){
return ContextCompat.checkSelfPermission(this, ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED;
}
private void createLocationRequest(){
mLocationRequest = LocationRequest.create();
mLocationRequest.setInterval(1000 * 10);
mLocationRequest.setFastestInterval(1000 * 5);
mLocationRequest.setNumUpdates(2);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
if(requestCode == LOC_PERMISSION_CODE){
if(grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED){
requestLocation();
}else {
Toast.makeText(this, "Permission Required.", Toast.LENGTH_SHORT).show();
}
}
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
log("onConnectionFailed -> %s", connectionResult.getErrorMessage());
}
private void log(String format, Object... args){
Log.d("MainActivity", String.format(format, args));
}
@Override
public void onLocationChanged(Location location) {
mCurrentLocation = location;
log("onLocationChanged()");
updateUI();
}
private void updateUI(){
log("updateUI()");
if(null != mCurrentLocation) {
mLocationTextView.setText(String.format("Lat: %s, Lon: %s", mCurrentLocation.getLatitude(), mCurrentLocation.getLatitude()));
}
}
@Override
public void onConnected(@Nullable Bundle bundle) {
requestLocation();
log("onConnected()");
}
@Override
public void onConnectionSuspended(int i) {
log("onConnectionSuspended()");
}
}
答案 0 :(得分:1)
"Lat: %s, Lon: %s", mCurrentLocation.getLatitude(), mCurrentLocation.getLatitude())
第二个参数应该是getLongitude,而不是getLatitude