java在从9.0.1升级到google play services 9.4.0后出现错误。getMap（）；

Question

从9.0.1升级到google play services 9.4.0后，出现错误。getMap（）；如果我做谷歌播放服务9.0.1回来。我的应用程序在启动时崩溃。。。请大家帮帮我。。想知道我现在能做什么。。。提前通知

public class MapsActivity extends FragmentActivity {
private GoogleMap mMap;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_maps);
    setUpMapIfNeeded();

}
private void setUpMapIfNeeded() {
    if (mMap == null) {
        MapFragment mapFragment = (MapFragment) getFragmentManager()
                .findFragmentById(R.id.map);
        mMap = mapFragment.getMap();
        if (mMap != null) {
            new MarkerTask().execute();
        }
    }
}

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

    private static final String LOG_TAG = "ExampleApp";
    private static final String SERVICE_URL = "http://www.xxxxxxx.com/bar/mob/map.php?city=&location=";

    // Invoked by execute() method of this object
    @Override
    protected String doInBackground(Void... args) {

        HttpURLConnection conn = null;
        final StringBuilder json = new StringBuilder();
        try {
            // Connect to the web service
            URL url = new URL(SERVICE_URL);
            conn = (HttpURLConnection) url.openConnection();
            InputStreamReader in = new InputStreamReader(conn.getInputStream());

            // Read the JSON data into the StringBuilder
            int read;
            char[] buff = new char[1024];
            while ((read = in.read(buff)) != -1) {
                json.append(buff, 0, read);
            }
        } catch (IOException e) {
            Log.e(LOG_TAG, "Error connecting to service", e);
            //throw new IOException("Error connecting to service", e); //uncaught
        } finally {
            if (conn != null) {
                conn.disconnect();
            }
        }

        return json.toString();
    }

    // Executed after the complete execution of doInBackground() method
    @Override
    protected void onPostExecute(String json) {

        try {
            // De-serialize the JSON string into an array of city objects
            JSONArray jsonArray = new JSONArray(json);
            System.out.println("Returned value " + jsonArray.toString());
            for (int i = 0; i < jsonArray.length(); i++) {
                JSONObject jsonObj = jsonArray.getJSONObject(i);
                LatLng latLng = new LatLng(jsonObj.getJSONArray("latlng").getDouble(0),
                        jsonObj.getJSONArray("latlng").getDouble(1));

                //move CameraPosition on first result
                if (i == 0) {
                    CameraPosition cameraPosition = new CameraPosition.Builder()
                            .target(latLng).zoom(13).build();

                    mMap.animateCamera(CameraUpdateFactory
                            .newCameraPosition(cameraPosition));
                }

                // Create a marker for each city in the JSON data.
                mMap.addMarker(new MarkerOptions()
                        .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_BLUE))
                        .title(jsonObj.getString("barname"))
                        .snippet(jsonObj.getString("address"))
                        .position(latLng));
            }
        } catch (JSONException e) {
            Log.e(LOG_TAG, "Error processing JSON", e);
        }
    }
}}

Answer 1

地图碎片。getMap（）自2014年12月起就被弃用，随着2016年6月27日的新版本，getMap（）已被删除。现在，好的（也是唯一的）方法是使用getMapAsync（）

有关更多详细信息，请参见Maps Android API Release Notes：

The previously-deprecated getMap() function is no longer available in the Google Play services SDK. (It is still available in the Google Play services APK that is delivered to Android devices.) The getMap() function has been deprecated since December 2014. See the release blog post for help with converting from getMap() to getMapAsync().

你可以看看Actual guide for using MapFragment

如果从getMap（）切换到getMapAsync（）时遇到问题，也可以查看Geo Developers Blog