Android 使用所有位置提供者的谷歌地图

新MapView/GoogleMap（谷歌地图Android API V2）的默认行为是仅使用GPS位置。在室内通常意味着根本没有位置。当我的应用程序显示地图视图时，我需要立即居中/缩放当前位置（最近已知、最佳猜测等），并且地图的MyLocationButton始终可用。我不需要出于任何其他目的跟踪位置变化

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在这里，授予GoogleMap的所有位置提供程序是否比在自定义LocationSource类中使用GoogleMap.setLocationSource（）更简单？我在这里看到LocationSource示例和其他类似示例，它们使用Google不再推荐的旧API。建议使用Google Play服务，但为了确保网络提供的位置，我们应该使用旧的工具，真的吗？

这是您的完整解决方案。在您想要获取位置的地方添加以下代码

LocationResult locationResult = new LocationResult(){
                @Override
                public void gotLocation(Location location) {
                    // TODO Auto-generated method stub
                    Latitude=location.getLatitude();
                    longitude=location.getLongitude();
                    Log.d("latitude",""+Latitude);
                    Log.d("latitude",""+longitude);
                }
            };
            MyLocation myLocation = new MyLocation();
            myLocation.getLocation(this, locationResult);

并创建一个类MyLocation来查找lat long位置

package com.example.util;

import java.util.Timer;
import java.util.TimerTask;

import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;

import com.example.pgapplication.SearchResultActivity;

public class MyLocation {
    Timer timer1;
    LocationManager lm;
    LocationResult locationResult;
    boolean gps_enabled=false;
    boolean network_enabled=false;

    public boolean getLocation(SearchResultActivity searchResultActivity, LocationResult result)
    {
        //I use LocationResult callback class to pass location value from MyLocation to user code.
        locationResult=result;
        if(lm==null)
            lm = (LocationManager) searchResultActivity.getSystemService(Context.LOCATION_SERVICE);

        //exceptions will be thrown if provider is not permitted.
        try{gps_enabled=lm.isProviderEnabled(LocationManager.GPS_PROVIDER);}catch(Exception ex){}
        try{network_enabled=lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);}catch(Exception ex){}

        //don't start listeners if no provider is enabled
        if(!gps_enabled && !network_enabled)
            return false;

        if(gps_enabled)
            lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListenerGps);
        if(network_enabled)
            lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNetwork);
        timer1=new Timer();
        timer1.schedule(new GetLastLocation(),0);
        return true;
    }

    LocationListener locationListenerGps = new LocationListener() {
        public void onLocationChanged(Location location) {
            timer1.cancel();
            locationResult.gotLocation(location);
            lm.removeUpdates(this);
            lm.removeUpdates(locationListenerNetwork);
        }
        public void onProviderDisabled(String provider) {}
        public void onProviderEnabled(String provider) {}
        public void onStatusChanged(String provider, int status, Bundle extras) {}
    };

    LocationListener locationListenerNetwork = new LocationListener() {
        public void onLocationChanged(Location location) {
            timer1.cancel();
            locationResult.gotLocation(location);
            lm.removeUpdates(this);
            lm.removeUpdates(locationListenerGps);
        }
        public void onProviderDisabled(String provider) {}
        public void onProviderEnabled(String provider) {}
        public void onStatusChanged(String provider, int status, Bundle extras) {}
    };

    class GetLastLocation extends TimerTask {
        @Override
        public void run() {
            lm.removeUpdates(locationListenerGps);
            lm.removeUpdates(locationListenerNetwork);

            Location net_loc=null, gps_loc=null;
            if(gps_enabled)
                gps_loc=lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
            if(network_enabled)
                net_loc=lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);

            //if there are both values use the latest one
            if(gps_loc!=null && net_loc!=null){
                if(gps_loc.getTime()>net_loc.getTime())
                    locationResult.gotLocation(gps_loc);
                else
                    locationResult.gotLocation(net_loc);
                return;
            }

            if(gps_loc!=null){
                locationResult.gotLocation(gps_loc);
                return;
            }
            if(net_loc!=null){
                locationResult.gotLocation(net_loc);
                return;
            }
            locationResult.gotLocation(null);
        }
    }

    public static abstract class LocationResult{
        public abstract void gotLocation(Location location);
    }
}

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我的问题不是以任何方式获取位置，而是关于新MapView（com.google.android.gms.maps.MapView）或其包装器MapFragment的行为。请看图片：。提到的MyLocation按钮位于右上角。即使我在开始时缩放到某个位置，此按钮仍然不起作用。我想要Android股票“地图”应用程序的行为。另外，您的代码使用旧的API-Android.location。谷歌建议使用新的定位API-com.Google.android.gms.Location。