我正在尝试学习Android Receiving Location Updates教程。示例代码是here on Github。
除了这一行之外,所有的东西都在工作:LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
它抛出了一个cannot resolve method requestLocationUpdates
错误。我在documentation中看不到任何东西。
这是完整的代码。你知道我哪里错了吗?谢谢!
package location.test.example.com;
import android.app.Fragment;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.text.format.DateFormat;
import android.util.Log;
import android.view.ActionMode;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.TextView;
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.LocationRequest;
import com.google.android.gms.location.LocationServices;
import java.util.ArrayList;
import java.util.Date;
public class LocationFragment extends Fragment implements
GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {
protected GoogleApiClient mGoogleApiClient;
protected Location mCurrentLocation;
protected LocationRequest mLocationRequest;
protected String mLastUpdateTime;
public static final long UPDATE_INTERVAL_IN_MILLISECONDS = 5000;
public static final long FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS = UPDATE_INTERVAL_IN_MILLISECONDS / 5;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mLastUpdateTime = "";
buildGoogleApiClient();
if (NavUtils.getParentActivityName(getActivity()) != null) {
getActivity().getActionBar().setDisplayHomeAsUpEnabled(true);
}
setHasOptionsMenu(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_location, container, false);
return v;
}
protected synchronized void buildGoogleApiClient() {
mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
createLocationRequest();
}
protected void createLocationRequest() {
mLocationRequest = new LocationRequest();
mLocationRequest.setInterval(UPDATE_INTERVAL_IN_MILLISECONDS);
mLocationRequest.setFastestInterval(FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS);
mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
startLocationUpdates();
}
protected void startLocationUpdates() {
LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
}
@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 onLocationChanged(Location location) {
mCurrentLocation = location;
mLastUpdateTime = DateFormat.getDateFormat(getActivity()).format(new Date());
Toast.makeText(getActivity(), location.toString() + "", Toast.LENGTH_SHORT).show();
}
@Override
public void onConnected(Bundle connectionHint) {
}
@Override
public void onConnectionFailed(ConnectionResult result) {
Log.i("LocationFragment", "Connection failed: ConnectionResult.getErrorCode() " + result.getErrorCode());
}
@Override
public void onConnectionSuspended(int cause) {
Log.i("LocationFragment", "Connection suspended");
mGoogleApiClient.connect();
}
}
发布于 2017-01-10 19:35:04
导入
import com.google.android.gms.location.LocationListener;
而不是
import android.location.LocationListener;
发布于 2018-08-07 17:16:16
替换
import android.location.LocationListener;
从…
import com.google.android.gms.location.LocationListener;
并删除这些重写方法
public void onStatusChanged(String provider, int status, Bundle extras) {}
@Override
public void onProviderEnabled(String provider) {}
@Override
public void onProviderDisabled(String provider) {}
发布于 2016-03-13 00:40:13
导入android.location.LocationListener
或com.google.android.gms.location.LocationListener
是无用的,因为这些包仍未使用。实现com.google.android.gms.location.LocationListener
接口就可以了。
https://stackoverflow.com/questions/28954421
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