Android LocationClient类已弃用,但在文档中使用

Question

如果我们查看了该文档LocationClient,我们可以看到该类已被弃用.

但是文档中使用了不推荐使用的类来获取当前位置.

我认为这有点误导,或者我在查看不正确的文件？

Answer 1

谷歌再次发布了一个新的API,但他们没有更新文档:$花了一些时间试图弄清楚它是如何工作的我得到了它,在这里你有一个完整的例子使用新的/最新的位置服务API ...享受开发:)

import android.location.Location;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationServices;

public class MainActivity extends Activity implements
        GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener,
        LocationListener {

    private final String TAG = "MyAwesomeApp";

    private TextView mLocationView;

    private GoogleApiClient mGoogleApiClient;

    private LocationRequest mLocationRequest;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        mLocationView = new TextView(this);

        setContentView(mLocationView);

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

    @Override
    protected void onStart() {
        super.onStart();
        // Connect the client.
        mGoogleApiClient.connect();
    }

    @Override
    protected void onStop() {
        // Disconnecting the client invalidates it.
        mGoogleApiClient.disconnect();
        super.onStop();
    }

    @Override
    public void onConnected(Bundle bundle) {

        mLocationRequest = LocationRequest.create();
        mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        mLocationRequest.setInterval(1000); // Update location every second

        LocationServices.FusedLocationApi.requestLocationUpdates(
                mGoogleApiClient, mLocationRequest, this);
    }

    @Override
    public void onConnectionSuspended(int i) {
        Log.i(TAG, "GoogleApiClient connection has been suspend");
    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {
        Log.i(TAG, "GoogleApiClient connection has failed");
    }

    @Override
    public void onLocationChanged(Location location) {
        mLocationView.setText("Location received: " + location.toString());
    }
}

并且不要忘记将此权限添加到AndroidManifest.xml文件中:

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

注意:如果您只需要获取最后一个位置(没有更新),则可以使用LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient)OnConnected

Answer 2

一些文档在Google中很老(您提到的一些示例仍然使用已弃用的文档LocationClient).您必须使用位置服务示例中描述的新GoogleApiClient:

private GoogleApiClient mGoogleApiClient;

  mGoogleApiClient = new GoogleApiClient.Builder(context)
     .addApi(LocationServices.API)
     .addConnectionCallbacks(this)
     .addOnConnectionFailedListener(this)
     .build()

当连接新客户端时,您可以使用融合位置api,例如:

LocationServices.FusedLocationApi.requestLocationUpdates(theNewClient, 
    locationRequest, locationListener);