java - 像优步一样实现谷歌地图

Question

我是 android 的新手。我正在尝试实现像 uber 应用程序这样的可拖动谷歌地图。我从某个地方找到了代码，但是当我尝试运行时，出现了一些问题，比如

Error:(24, 37) error: cannot find symbol class GooglePlayServicesClient Error:(26, 39) error: cannot find symbol class LocationClient

在我的依赖中添加了

compile 'com.google.android.gms:play-services:8.4.0'

以下是我用过的代码。

 package com.rakyow.taxifinder.taxifinder;


import java.io.IOException;
import java.util.List;
import java.util.Locale;

import android.app.Activity;
import android.app.Dialog;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.common.api.GoogleApiClient.ConnectionCallbacks;
import   com.google.android.gms.common.api.GoogleApiClient.OnConnectionFailedListener;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.OnCameraChangeListener;
import com.google.android.gms.maps.MapFragment;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.CameraPosition;
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 MainActivity extends Activity implements
    ConnectionCallbacks, OnConnectionFailedListener {
// A request to connect to Location Services
private LocationRequest mLocationRequest;
GoogleMap mGoogleMap;


public static String ShopLat;
public static String ShopPlaceId;
public static String ShopLong;
// Stores the current instantiation of the location client in this object
private GoogleApiClient mLocationClient;
boolean mUpdatesRequested = false;
private TextView markerText;
private LatLng center;
private LinearLayout markerLayout;
private Geocoder geocoder;
private List<Address> addresses;
private TextView Address;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.homepage);
    markerText = (TextView) findViewById(R.id.locationMarkertext);
    Address = (TextView) findViewById(R.id.adressText);
    markerLayout = (LinearLayout) findViewById(R.id.locationMarker);
    // Getting Google Play availability status
    int status = GooglePlayServicesUtil
            .isGooglePlayServicesAvailable(getBaseContext());

    if (status != ConnectionResult.SUCCESS) { // Google Play Services are
        // not available

        int requestCode = 10;
        Dialog dialog = GooglePlayServicesUtil.getErrorDialog(status, this,
                requestCode);
        dialog.show();

    } else { // Google Play Services are available

        // Getting reference to the SupportMapFragment
        // Create a new global location parameters object
        mLocationRequest = LocationRequest.create();

        /*
         * Set the update interval
         */
        mLocationRequest.setInterval(GData.UPDATE_INTERVAL_IN_MILLISECONDS);

        // Use high accuracy
        mLocationRequest
                .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

        // Set the interval ceiling to one minute
        mLocationRequest
                .setFastestInterval(GData.FAST_INTERVAL_CEILING_IN_MILLISECONDS);

        // Note that location updates are off until the user turns them on
        mUpdatesRequested = false;

        /*
         * Create a new location client, using the enclosing class to handle
         * callbacks.
         */
        mLocationClient = new GoogleApiClient(this, this, this);
        mLocationClient.connect();
    }
}

private void stupMap() {
    try {
        LatLng latLong;
        // TODO Auto-generated method stub
        mGoogleMap = ((MapFragment) getFragmentManager().findFragmentById(
                R.id.map)).getMap();

        // Enabling MyLocation in Google Map
        mGoogleMap.setMyLocationEnabled(true);
        if (mLocationClient.getLastLocation() != null) {
            latLong = new LatLng(mLocationClient.getLastLocation()
                    .getLatitude(), mLocationClient.getLastLocation()
                    .getLongitude());
            ShopLat = mLocationClient.getLastLocation().getLatitude() + "";
            ShopLong = mLocationClient.getLastLocation().getLongitude()
                    + "";


        } else {
            latLong = new LatLng(12.9667, 77.5667);
        }
        CameraPosition cameraPosition = new CameraPosition.Builder()
                .target(latLong).zoom(19f).tilt(70).build();

        mGoogleMap.setMyLocationEnabled(true);
        mGoogleMap.animateCamera(CameraUpdateFactory
                .newCameraPosition(cameraPosition));
        // Clears all the existing markers
        mGoogleMap.clear();

        mGoogleMap.setOnCameraChangeListener(new OnCameraChangeListener() {

            @Override
            public void onCameraChange(CameraPosition arg0) {
                // TODO Auto-generated method stub
                center = mGoogleMap.getCameraPosition().target;

                markerText.setText(" Set your Location ");
                mGoogleMap.clear();
                markerLayout.setVisibility(View.VISIBLE);

                try {
                    new GetLocationAsync(center.latitude, center.longitude)
                            .execute();

                } catch (Exception e) {
                }
            }
        });

        markerLayout.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                try {

                    LatLng latLng1 = new LatLng(center.latitude,
                            center.longitude);

                    Marker m = mGoogleMap.addMarker(new MarkerOptions()
                            .position(latLng1)
                            .title(" Set your Location ")
                            .snippet("")
                            .icon(BitmapDescriptorFactory
                                    .fromResource(R.drawable.add_marker)));
                    m.setDraggable(true);

                    markerLayout.setVisibility(View.GONE);
                } catch (Exception e) {
                }

            }
        });

    } catch (Exception e) {
        e.printStackTrace();
    }
}

@Override
public void onLocationChanged(Location location) {
    // TODO Auto-generated method stub

}

@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
    // TODO Auto-generated method stub

}

@Override
public void onProviderEnabled(String provider) {
    // TODO Auto-generated method stub

}

@Override
public void onProviderDisabled(String provider) {
    // TODO Auto-generated method stub

}

@Override
public void onConnectionFailed(ConnectionResult arg0) {
    // TODO Auto-generated method stub

}

@Override
public void onConnected(Bundle arg0) {
    // TODO Auto-generated method stub
    stupMap();

}

@Override
public void onConnectionSuspended(int i) {

}

@Override
public void onDisconnected() {
    // TODO Auto-generated method stub

}

private class GetLocationAsync extends AsyncTask<String, Void, String> {

    // boolean duplicateResponse;
    double x, y;
    StringBuilder str;

    public GetLocationAsync(double latitude, double longitude) {
        // TODO Auto-generated constructor stub

        x = latitude;
        y = longitude;
    }

    @Override
    protected void onPreExecute() {
        Address.setText(" Getting location ");
    }

    @Override
    protected String doInBackground(String... params) {

        try {
            geocoder = new Geocoder(MainActivity.this, Locale.ENGLISH);
            addresses = geocoder.getFromLocation(x, y, 1);
            str = new StringBuilder();
            if (geocoder.isPresent()) {
                Address returnAddress = addresses.get(0);

                String localityString = returnAddress.getLocality();
                String city = returnAddress.getCountryName();
                String region_code = returnAddress.getCountryCode();
                String zipcode = returnAddress.getPostalCode();

                str.append(localityString + "");
                str.append(city + "" + region_code + "");
                str.append(zipcode + "");

            } else {
            }
        } catch (IOException e) {
            Log.e("tag", e.getMessage());
        }
        return null;

    }

    @Override
    protected void onPostExecute(String result) {
        try {
            Address.setText(addresses.get(0).getAddressLine(0)
                    + addresses.get(0).getAddressLine(1) + " ");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    @Override
    protected void onProgressUpdate(Void... values) {

    }
}

}

我的要求与此类似 .请帮我解决这个问题。任何帮助将不胜感激。提前致谢

Answer 1

我建议您使用 GoogleApiClient，因为如果我没记错的话，较新版本的播放服务不再支持 LocationClient，他们从 Google Play 服务 6.5.87 开始将其删除。这是 example implementation 的链接.如果您真的想使用我不推荐的 LocationClient，您可以使用旧版本的 play-services