Android Google maps在初始化期间抛出nullpointerexception

嘿，我正在尝试将goole maps片段实现为tabs片段。tabhost也是带有导航抽屉的fragmentactivity中的另一个片段这里是我的当前代码我在初始化映射时收到一个空指针异常

package com.shimba.android.secure.fragments;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.json.JSONArray;
import org.json.JSONObject;

import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.graphics.Color;
import android.location.Location;
import android.os.AsyncTask;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.text.Html;
import android.view.InflateException;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;


import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.GooglePlayServicesClient.ConnectionCallbacks;
import com.google.android.gms.common.GooglePlayServicesClient.OnConnectionFailedListener;
import com.google.android.gms.location.LocationClient;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.maps.CameraUpdate;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.OnMarkerClickListener;
import com.google.android.gms.maps.GoogleMap.OnMyLocationButtonClickListener;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;

import com.google.android.gms.maps.model.Marker;

import com.google.android.gms.maps.model.Polyline;
import com.shimba.android.secure.R;
import com.shimba.android.secure.http.NetworkConnectionStatus;
import com.shimba.android.secure.http.RestClient;

public class LocationFragment extends Fragment
        implements
        ConnectionCallbacks,
        OnConnectionFailedListener,
    LocationListener,
        OnMyLocationButtonClickListener,OnMarkerClickListener {

    private GoogleMap map;
    private static View v;
    private LocationClient mLocationClient;
    Location location;
    double longitude;
    double latitude;
    Polyline polyLine;
    protected LatLng start;
    String distance, duration;
    Marker marker2;
    protected LatLng end;
    private SharedPreferences prefs;

    ArrayList<Marker> mArrayMarkers;
    List<Double> listDistance;

    private static final LocationRequest REQUEST = LocationRequest.create()
            .setInterval(5000)         // 5 seconds
            .setFastestInterval(16)    // 16ms = 60fps
            .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

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


    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        prefs = PreferenceManager.getDefaultSharedPreferences(getActivity());
        if (v != null) {
            ViewGroup parent = (ViewGroup) v.getParent();
            if (parent != null)
                parent.removeView(v);
        }
        try {
            v = inflater.inflate(R.layout.fragment_location, container, false);
            map = ((SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map))
                    .getMap();
            map.setMyLocationEnabled(true);
            map.setOnMarkerClickListener(this);
           // if (NetworkConnectionStatus.isOnline(getActivity())) {
             //   new GetPlacesTask().execute();
            //}
        } catch (InflateException e) {
         /* map is already there, just return view as it is */
        }

        return v;
    }

    @Override
    public void onResume() {
        super.onResume();
        setUpMapIfNeeded();
        setUpLocationClientIfNeeded();
        mLocationClient.connect();
    }

    @Override
    public void onPause() {
        super.onPause();

        if (mLocationClient != null) {
            mLocationClient.disconnect();
        }
    }

    private void setUpMapIfNeeded() {
        // Do a null check to confirm that we have not already instantiated the map.
        if (map == null) {
            // Try to obtain the map from the SupportMapFragment.
            map = ((SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map))
                    .getMap();
            // Check if we were successful in obtaining the map.
            if (map != null) {
                map.setMyLocationEnabled(true);
                map.setOnMyLocationButtonClickListener(this);
            }
        }
    }

    private void setUpLocationClientIfNeeded() {
        if (mLocationClient == null) {
            mLocationClient = new LocationClient(
                    getActivity(),
                    this,  // ConnectionCallbacks
                    this); // OnConnectionFailedListener
        }
    }

    public void showMyLocation(View view) {
        if (mLocationClient != null && mLocationClient.isConnected()) {
            String msg = "Location = " + mLocationClient.getLastLocation();
            Toast.makeText(getActivity(), "hating me", 155000).show();
        }
    }

    @Override
    public void onConnected(Bundle bundle) {

    }

    @Override
    public void onDisconnected() {

    }

    @Override
    public void onLocationChanged(Location location) {

    }

    @Override
    public void onConnectionFailed(ConnectionResult connectionResult) {

    }

    @Override
    public boolean onMarkerClick(Marker marker) {
        return false;
    }

    @Override
    public boolean onMyLocationButtonClick() {
        return false;
    }


    public class GetPlacesTask extends AsyncTask<String, Void, String> {
        @Override
        protected void onPreExecute() {
            // TODO Auto-generated method stub
            super.onPreExecute();

        }


        @Override
        protected String doInBackground(String... params) {
            // TODO Auto-generated method stub
            String url = null;
            try {
                url = "https://maps.googleapis.com/maps/api/place/search/json?location=%20-1.296436,36.791540&keyword=safaricom+shop&rankby=distance&sensor=false&key=AIzaSyBVwYvGApeZmrPCTilzMKgpk5Hr48TisbM";
            } catch (Exception e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
            String json = "{}";
            try {
                json = RestClient.makeRestRequest(RestClient.GET, url, null);
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            Editor editor = prefs.edit();
            editor.putString("ShopPlaces", json);
            editor.commit();
            return json;
        }

        @Override
        protected void onPostExecute(String result) {
            // TODO Auto-generated method stub
            super.onPostExecute(result);
            //System.out.println(result);


        }
    }
}

---

请发布完整的错误堆栈跟踪。@user3249477我已经发布了日志，目前它显示一条注释行正在抛出NPE。请更新您的代码和/或日志。@user3249477嘿，我已经编辑了代码，请现在重试，但现在我已经发布了所有代码

java.lang.NullPointerException
        at com.shimba.android.secure.fragments.LocationFragment.onCreateView(LocationFragment.java:92)
        at android.support.v4.app.Fragment.performCreateView(Fragment.java:1504)
        at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:942)
        at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1121)
        at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:682)
        at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1484)
        at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:482)
        at android.support.v4.app.FragmentTabHost.onAttachedToWindow(FragmentTabHost.java:283)
        at android.view.View.dispatchAttachedToWindow(View.java:11799)
        at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2417)
        at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2424)
        at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2424)
        at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2424)
        at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2424)
        at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2424)
        at android.view.ViewGroup.dispatchAttachedToWindow(ViewGroup.java:2424)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1233)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1029)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4356)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
        at android.view.Choreographer.doCallbacks(Choreographer.java:555)
        at android.view.Choreographer.doFrame(Choreographer.java:525)
        at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
        at android.os.Handler.handleCallback(Handler.java:615)
        at android.os.Handler.dispatchMessage(Handler.java:92)
        at android.os.Looper.loop(Looper.java:137)
        at android.app.ActivityThread.main(ActivityThread.java:4747)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
        at dalvik.system.NativeStart.main(Native Method)