简单的找到写代码在位置方法

public void onLocationChanged(Location location) {
    if (mCurrLocationMarker != null) {
        mCurrLocationMarker.remove();
    }


    //Place current location marker
    LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
    MarkerOptions markerOptions = new MarkerOptions();
    markerOptions.position(latLng);
    markerOptions.title("Current Position");
    markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));
    mCurrLocationMarker = mMap.addMarker(markerOptions);

    //move map camera
    mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
    mMap.animateCamera(CameraUpdateFactory.zoomTo(18));

    PolylineOptions pOptions = new PolylineOptions()
            .width(5)
            .color(Color.GREEN)
            .geodesic(true);
    for (int z = 0; z < routePoints.size(); z++) {
        LatLng point = routePoints.get(z);
        pOptions.add(point);
    }
    line = mMap.addPolyline(pOptions);
    routePoints.add(latLng);
}

既然谷歌Play位置服务已经推出，我建议开发者开始使用新的融合位置提供商。你会发现它更容易使用和更准确。请观看谷歌I/O视频《超越蓝点:Android位置的新功能》，由两位创建了新的谷歌Play位置服务API的人制作。

I've been working with location APIs on a number of mobile platforms, and I think what these two guys have done is really revolutionary. It's gotten rid of a huge amount of the complexities of using the various providers. Stack Overflow is littered with questions about which provider to use, whether to use last known location, how to set other properties on the LocationManager, etc. This new API that they have built removes most of those uncertainties and makes the location services a pleasure to use.

I've written an Android app that periodically gets the location using Google Play location services and sends the location to a web server where it is stored in a database and can be viewed on Google Maps. I've written both the client software (for Android, iOS, Windows Phone and Java ME) and the server software (for ASP.NET and SQL Server or PHP and MySQL). The software is written in the native language on each platform and works properly in the background on each. Lastly, the software has the MIT License. You can find the Android client here:

https://github.com/nickfox/GpsTracker/tree/master/phoneClients/android

获得位置更新需要大量的代码在Android，你需要照顾

谷歌播放服务可用性检查， 更新谷歌播放服务，如果它是旧的或不可用 对话框创建GoogleApiClient和它的回调连接，断开等。 停止并释放用于位置更新的资源 处理位置权限场景 检查“位置”服务是否开启 获取最后已知位置也不是那么容易 如果在一定时间后没有得到位置，则退回到最后一个已知位置

为了简化所有这些步骤，我创建了android - easylocation(小型android库)，它将照顾所有这些东西，你可以专注于业务逻辑。

所有你需要的是扩展EasyLocationActivity和这个

requestSingleLocationFix(easyLocationRequest);

or

requestLocationUpdates(easyLocationRequest);

签出示例应用程序和步骤需要在这里https://github.com/akhgupta/Android-EasyLocation

通过-获取gps位置

LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);

LocationListener locationListener = new LocationListener() 
{

            @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 onLocationChanged(Location location) {
                // TODO Auto-generated method stub
                double latitude = location.getLatitude();
                double longitude = location.getLongitude();
                double speed = location.getSpeed(); //spedd in meter/minute
                speed = (speed*3600)/1000;      // speed in km/minute               Toast.makeText(GraphViews.this, "Current speed:" + location.getSpeed(),Toast.LENGTH_SHORT).show();
            }
        };

        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);

}

自2020年9月23日起，play-services-location版本17.1.0包含了FusedLocationProviderClient.getCurrentLocation()方法，这是获得当前位置的推荐和直接的方法:

返回设备上的单个当前位置固定。与返回缓存位置的getLastLocation()不同，此方法可能导致设备上的活动位置计算。如果能在合理的时间内(几十秒)确定设备位置，将返回一个新的位置，否则将返回null。

关于详细的例子，看看codingjeremy的回答和GitHub上的官方Android位置示例- Current location (Kotlin)。

简单的找到写代码在位置方法

public void onLocationChanged(Location location) {
    if (mCurrLocationMarker != null) {
        mCurrLocationMarker.remove();
    }


    //Place current location marker
    LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
    MarkerOptions markerOptions = new MarkerOptions();
    markerOptions.position(latLng);
    markerOptions.title("Current Position");
    markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED));
    mCurrLocationMarker = mMap.addMarker(markerOptions);

    //move map camera
    mMap.moveCamera(CameraUpdateFactory.newLatLng(latLng));
    mMap.animateCamera(CameraUpdateFactory.zoomTo(18));

    PolylineOptions pOptions = new PolylineOptions()
            .width(5)
            .color(Color.GREEN)
            .geodesic(true);
    for (int z = 0; z < routePoints.size(); z++) {
        LatLng point = routePoints.get(z);
        pOptions.add(point);
    }
    line = mMap.addPolyline(pOptions);
    routePoints.add(latLng);
}