问题
I couldn't figure out why LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient,mLocationRequest, this); "FusedLocationApi" is cross out and point at it saying is deprecated.
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import android.location.Location;
import android.location.LocationListener;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationRequest;
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.MarkerOptions;
public class MaintainerMapActivity extends FragmentActivity implements OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener{
private GoogleMap mMap;
GoogleApiClient mGoogleApiClient;
Location mLastLocaton;
LocationRequest mLocationRequest;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maintainer_map2);
// 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);
}
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
// Add a marker in Sydney and move the camera
LatLng sydney = new LatLng(-34, 151);
mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
}
@Override
public void onLocationChanged(Location location) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onConnected(@Nullable Bundle bundle) {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(1000);
mLocationRequest.setFastestInterval(1000);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient,mLocationRequest, this);
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
}
}
回答1:
Original Answer
This is happening because FusedLocationProviderApi deprecated in a recent version of google play services. You can check it here. The official guide now suggests using FusedLocationProviderClient. You can find the detailed guide here.
for e.g inside onCreate() create a FusedLocationProviderClient instance
mFusedLocationClient = LocationServices.getFusedLocationProviderClient(this);
and for requesting the last known location all you have to do is call
mFusedLocationClient.getLastLocation()
.addOnSuccessListener(this, new OnSuccessListener<Location>() {
@Override
public void onSuccess(Location location) {
// Got last known location. In some rare situations, this can be null.
if (location != null) {
// Logic to handle location object
}
}
});
Simple isn't it?
Important Update (October 24, 2017):
Yesterday Google updated its official developer page with a warning that says
Please continue using the FusedLocationProviderApi class and don't migrate to the FusedLocationProviderClient class until Google Play services version 12.0.0 is available, which is expected to ship in early 2018. Using the FusedLocationProviderClient before version 12.0.0 causes the client app to crash when Google Play services is updated on the device. We apologize for any inconvenience this may have caused.
So I think we should continue using the deprecated LocationServices.FusedLocationApi until Google resolves the issue.
Latest Update (November 21, 2017):
The warning is gone now. Google Play services 11.6 November 6, 2017, release note says : I think Play Services won't crash when it updates itself in the background. So we can use new FusedLocationProviderClient now.
回答2:
// Better to use GoogleApiClient to show device location. I am using this way in my aap.
public class SuccessFragment extends Fragment{
private TextView txtLatitude, txtLongitude, txtAddress;
// private AddressResultReceiver mResultReceiver;
// removed here because cause wrong code when implemented and
// its not necessary like the author says
//Define fields for Google API Client
private FusedLocationProviderClient mFusedLocationClient;
private Location lastLocation;
private LocationRequest locationRequest;
private LocationCallback mLocationCallback;
private static final int REQUEST_PERMISSIONS_REQUEST_CODE = 14;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_location, container, false);
txtLatitude = (TextView) view.findViewById(R.id.txtLatitude);
txtLongitude = (TextView) view.findViewById(R.id.txtLongitude);
txtAddress = (TextView) view.findViewById(R.id.txtAddress);
// mResultReceiver = new AddressResultReceiver(null);
// cemented as above explained
try {
mFusedLocationClient = LocationServices.getFusedLocationProviderClient(getActivity());
mFusedLocationClient.getLastLocation()
.addOnSuccessListener(getActivity(), new OnSuccessListener<Location>() {
@Override
public void onSuccess(Location location) {
// Got last known location. In some rare situations this can be null.
if (location != null) {
// Logic to handle location object
txtLatitude.setText(String.valueOf(location.getLatitude()));
txtLongitude.setText(String.valueOf(location.getLongitude()));
if (mResultReceiver != null)
txtAddress.setText(mResultReceiver.getAddress());
}
}
});
locationRequest = LocationRequest.create();
locationRequest.setInterval(5000);
locationRequest.setFastestInterval(1000);
if (txtAddress.getText().toString().equals(""))
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
else
locationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
mLocationCallback = new LocationCallback() {
@Override
public void onLocationResult(LocationResult locationResult) {
for (Location location : locationResult.getLocations()) {
// Update UI with location data
txtLatitude.setText(String.valueOf(location.getLatitude()));
txtLongitude.setText(String.valueOf(location.getLongitude()));
}
}
;
};
} catch (SecurityException ex) {
ex.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
return view;
}
@Override
public void onStart() {
super.onStart();
if (!checkPermissions()) {
startLocationUpdates();
requestPermissions();
} else {
getLastLocation();
startLocationUpdates();
}
}
@Override
public void onPause() {
stopLocationUpdates();
super.onPause();
}
/**
* Return the current state of the permissions needed.
*/
private boolean checkPermissions() {
int permissionState = ActivityCompat.checkSelfPermission(getActivity(),
Manifest.permission.ACCESS_COARSE_LOCATION);
return permissionState == PackageManager.PERMISSION_GRANTED;
}
private void startLocationPermissionRequest() {
ActivityCompat.requestPermissions(getActivity(),
new String[]{Manifest.permission.ACCESS_COARSE_LOCATION},
REQUEST_PERMISSIONS_REQUEST_CODE);
}
private void requestPermissions() {
boolean shouldProvideRationale =
ActivityCompat.shouldShowRequestPermissionRationale(getActivity(),
Manifest.permission.ACCESS_COARSE_LOCATION);
// Provide an additional rationale to the user. This would happen if the user denied the
// request previously, but didn't check the "Don't ask again" checkbox.
if (shouldProvideRationale) {
Log.i(TAG, "Displaying permission rationale to provide additional context.");
showSnackbar(R.string.permission_rationale, android.R.string.ok,
new View.OnClickListener() {
@Override
public void onClick(View view) {
// Request permission
startLocationPermissionRequest();
}
});
} else {
Log.i(TAG, "Requesting permission");
// Request permission. It's possible this can be auto answered if device policy
// sets the permission in a given state or the user denied the permission
// previously and checked "Never ask again".
startLocationPermissionRequest();
}
}
/**
* Callback received when a permissions request has been completed.
*/
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
@NonNull int[] grantResults) {
Log.i(TAG, "onRequestPermissionResult");
if (requestCode == REQUEST_PERMISSIONS_REQUEST_CODE) {
if (grantResults.length <= 0) {
// If user interaction was interrupted, the permission request is cancelled and you
// receive empty arrays.
Log.i(TAG, "User interaction was cancelled.");
} else if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
// Permission granted.
getLastLocation();
} else {
// Permission denied.
// Notify the user via a SnackBar that they have rejected a core permission for the
// app, which makes the Activity useless. In a real app, core permissions would
// typically be best requested during a welcome-screen flow.
// Additionally, it is important to remember that a permission might have been
// rejected without asking the user for permission (device policy or "Never ask
// again" prompts). Therefore, a user interface affordance is typically implemented
// when permissions are denied. Otherwise, your app could appear unresponsive to
// touches or interactions which have required permissions.
showSnackbar(R.string.permission_denied_explanation, R.string.settings,
new View.OnClickListener() {
@Override
public void onClick(View view) {
// Build intent that displays the App settings screen.
Intent intent = new Intent();
intent.setAction(
Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
Uri uri = Uri.fromParts("package",
BuildConfig.APPLICATION_ID, null);
intent.setData(uri);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
});
}
}
}
/**
* Provides a simple way of getting a device's location and is well suited for
* applications that do not require a fine-grained location and that do not need location
* updates. Gets the best and most recent location currently available, which may be null
* in rare cases when a location is not available.
* <p>
* Note: this method should be called after location permission has been granted.
*/
@SuppressWarnings("MissingPermission")
private void getLastLocation() {
mFusedLocationClient.getLastLocation()
.addOnCompleteListener(getActivity(), new OnCompleteListener<Location>() {
@Override
public void onComplete(@NonNull Task<Location> task) {
if (task.isSuccessful() && task.getResult() != null) {
lastLocation = task.getResult();
txtLatitude.setText(String.valueOf(lastLocation.getLatitude()));
txtLongitude.setText(String.valueOf(lastLocation.getLongitude()));
} else {
Log.w(TAG, "getLastLocation:exception", task.getException());
showSnackbar(getString(R.string.no_location_detected));
}
}
});
}
private void stopLocationUpdates() {
mFusedLocationClient.removeLocationUpdates(mLocationCallback);
}
private void startLocationUpdates() {
if (ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getActivity(), 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;
}
mFusedLocationClient.requestLocationUpdates(locationRequest, mLocationCallback, null);
}
// private void showSnackbar(final String text) {
// if (canvasLayout != null) {
// Snackbar.make(canvasLayout, text, Snackbar.LENGTH_LONG).show();
// }
//}
// this also cause wrong code and as I see it dont is necessary
// because the same method which is really used
private void showSnackbar(final int mainTextStringId, final int actionStringId,
View.OnClickListener listener) {
Snackbar.make(getActivity().findViewById(android.R.id.content),
getString(mainTextStringId),
Snackbar.LENGTH_INDEFINITE)
.setAction(getString(actionStringId), listener).show();
}
}
And our fragment_location.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/locationLayout"
android:layout_below="@+id/txtAddress"
android:layout_width="match_parent"
android:layout_height="@dimen/activity_margin_30dp"
android:orientation="horizontal">
<TextView
android:id="@+id/txtLatitude"
android:layout_width="@dimen/activity_margin_0dp"
android:layout_height="@dimen/activity_margin_30dp"
android:layout_weight="0.5"
android:gravity="center"
android:hint="@string/latitude"
android:textAllCaps="false"
android:textColorHint="@color/colorPrimaryDark"
android:textColor="@color/colorPrimaryDark" />
<TextView
android:id="@+id/txtLongitude"
android:layout_width="@dimen/activity_margin_0dp"
android:layout_height="@dimen/activity_margin_30dp"
android:layout_weight="0.5"
android:gravity="center"
android:hint="@string/longitude"
android:textAllCaps="false"
android:textColorHint="@color/colorPrimary"
android:textColor="@color/colorPrimary" />
</LinearLayout>
回答3:
Yes, it's deprecated!
Here are some points you'll need while using new FusedLocationProviderClient.
- import it as import
com.google.android.gms.location.FusedLocationProviderClient;😅 - I notice that you are implementing LocationListener interface. In the mFusedLocationClient.requestLocationUpdates() method, now it doesn't take a LocationListener as a parameter. You can provide LocationCallback. As this is an abstract class you can't implement it like LocationListener. Make a callback method and pass it instead of 'this' as mentioned in Google's guide. import it as
import com.google.android.gms.location.LocationCallback; - With LocationCallback, you'll have onLocationResult() instead of onLocationChanged(). It returns LocationResult object instead of Location object. Use LocationResult.getLastLocation() to get the most recent location available in this result object. Import it as
import com.google.android.gms.location.LocationResult;
回答4:
Use this method
mFusedLocationClient.requestLocationUpdates(mLocationRequest, mLocationCallback, Looper.myLooper());
In Detail Refer My This Answer
回答5:
Yes, it has been deprecated. FusedLocationProviderClient is easier than FusedLocationProviderApi, because FusedLocationProviderApiusually requires GoogleApiClient too, which we need to connect to Google Play Service manually. If you previously used GoogleApiClient, now GoogleApiClientis no longer needed (more here).
To get last location, can use this function:
import com.google.android.gms.location.FusedLocationProviderClient;
import com.google.android.gms.tasks.OnCompleteListener;
public class MainActivity extends AppCompatActivity{
//before public class MainActivity extends AppCompatActivity implements LocationListener,...,...
private static final String TAG = "MainActivity";
public static final int MY_PERMISSIONS_REQUEST_FINE_LOCATION = 101;
private FusedLocationProviderClient mFusedLocationClient;
private Location mGetedLocation;
private double currentLat, currentLng;
private void getLastLocation() {
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
requestPermissions(new String[] {Manifest.permission.ACCESS_FINE_LOCATION}, MY_PERMISSIONS_REQUEST_FINE_LOCATION);
}
return;
}
mFusedLocationClient.getLastLocation()
.addOnCompleteListener(this, new OnCompleteListener<Location>() {
@Override
public void onComplete(@NonNull Task<Location> task) {
if (task.isSuccessful() && task.getResult() != null) {
mGetedLocation = task.getResult();
currentLat = mGetedLocation.getLatitude();
currentLng = mGetedLocation.getLongitude();
//updateUI();
}else{
Log.e(TAG, "no location detected");
Log.w(TAG, "getLastLocation:exception", task.getException());
}
}
});
}
回答6:
problem is with your import statement
remove this
import android.location.LocationListener;
add
import com.google.android.gms.location.LocationListener;
回答7:
Please make your Activity implement LocationListener from Google Services , not from Android OS, this worked for me.
回答8:
use getFusedLocationProviderClient instead LocationServices.FusedLocationApi.
Kotlin
activity?.let { activity ->
val client = LocationServices.getFusedLocationProviderClient(activity)
client.lastLocation.addOnCompleteListener(activity, OnCompleteListener<Location> {
// it.result.latitude
// it.result.longitude
})
}
java
FusedLocationProviderClient client =
LocationServices.getFusedLocationProviderClient(this);
// Get the last known location
client.getLastLocation()
.addOnCompleteListener(this, new OnCompleteListener<Location>() {
@Override
public void onComplete(@NonNull Task<Location> task) {
// ...
}
});
来源：https://stackoverflow.com/questions/46481789/android-locationservices-fusedlocationapi-deprecated