android - 无法获取地址谷歌地图 v2

Question

我正在尝试使用 lat ,lng 获取地址。
但是粘贴下面的代码不起作用。我真的很感激任何帮助。
我总是遇到异常，而不是值，这是怎么回事？

提前致谢。

       googleMap.setOnMapClickListener((OnMapClickListener) new OnMapClickListener() {

            @Override
            public void onMapClick(LatLng point) {
                // TODO Auto-generated method stub



                  final LatLng pt = point;

                  marker2 = googleMap.addMarker(new MarkerOptions()
                  .position(pt)
                  .icon(BitmapDescriptorFactory.fromResource(R.drawable.ic_launcher)));



                    final ProgressDialog progressDialog = ProgressDialog.show(
                            MainActivity.this,
                            "Searching Location....", "Please wait....");


                    new Thread(new Runnable(){
                        public void run(){
                            try {




                                    Toast.makeText(getBaseContext(), GeocoderUtil.getAddress(marker2.getPosition(), MainActivity.this), 5).show();


                                }catch(Exception e)
                                {


                                    runOnUiThread(new Runnable() {
                                        public void run() {

                                            progressDialog.dismiss(); 

                                            Toast.makeText(getBaseContext(),"error.", 5).show();
                                        }
                                    });


                                }}}

                    ).start();

异常(exception):

FATAL EXCEPTION: main
 java.lang.NullPointerException
    at com.maps.maps.MainActivity$1.onMapClick(MainActivity.java:442)
    at com.google.android.gms.maps.GoogleMap$.onMapClick(Unknown Source)
    at com.google.android.gms.maps.internal.h$a.onTransact(Unknown Source)
    at android.os.Binder.transact(Binder.java:297)
    at bor.a(SourceFile:93)
    at maps.af.q.b(Unknown Source)
    at maps.ap.bo.b(Unknown Source)
    at maps.ap.bk.onSingleTapConfirmed(Unknown Source)
    at maps.bt.g.onSingleTapConfirmed(Unknown Source)
    at maps.bt.i.handleMessage(Unknown Source)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:154)
    at android.app.ActivityThread.main(ActivityThread.java:4945)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
    at dalvik.system.NativeStart.main(Native Method)

Answer 1

ADDRESS::FROM LAT N LONG IN MAP V2:

    String address = "";
     Geocoder geoCoder = new Geocoder( getBaseContext(), Locale.getDefault());
         try {
           List<Address> addresses = geoCoder.getFromLocation(latitude ,longitude , 1);
           if (addresses.size() > 0) 
              {
              for (int index = 0; 
              index < addresses.get(0).getMaxAddressLineIndex(); index++)
               address += addresses.get(0).getAddressLine(index) + " "; }
                           }
         catch (IOException e) {        
             e.printStackTrace();
           }   
 googleMap_v2.animateCamera(CameraUpdateFactory.zoomTo(15));
          current_location.setText("Latitude:" +  latitude  + ", Longitude:"+ longitude );
          current_address.setText("current Address :" + address ); 
          googleMap_v2.addMarker(new MarkerOptions().position(new LatLng(latitude, longitude)).title("current status")); 
        }}