Question

我正在使用谷歌地图开发一个应用程序。在此我想在经度纬度值获取表单服务器的位置显示标记。如何在此获取的经度和纬度值显示标记？以下代码成功从我的服务器获取经度和纬度值，我想在谷歌地图上显示带有此获取的纬度和纬度的标记。我该怎么办？

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Answer 1

为什么您注释掉了添加标记的代码？试试这个：

// Storing  JSON item in a Variable
   String lat = c.getString(TAG_LAT);
   String longt = c.getString(TAG_LONG);


//Set JSON Data in TextView

  tv_latitude.setText(lat);
  tv_longitude.setText(longt);

//Parse data to double
  double latD = Double.parseDouble(lat);
  double longtD = Double.parseDouble(longt);

  MarkerOptions marker = new MarkerOptions().position(new LatLng(latD, longtD)).title("point");
  googleMap.addMarker(marker);

Answer 2

@Override
    public void onMapReady(GoogleMap googleMap) {
        LatLng sydney = new LatLng(-33.867, 151.206);
        googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(sydney, 13));
        googleMap.addMarker(new MarkerOptions().title("Sydney").snippet("The most populous city in Australia.").position(sydney));
    }

Answer 3

你必须使用： GoogleMap.addMarker（的MarkerOptions）; 看这个网站和这个问题还： http://bon-app-etit.blogspot.be/2012/12/add-informationobject-to-marker-in.html

code to add markers to map using android google maps v2

Answer 4

这是演示类，使用它可以将Marker添加到给定的lat和long。

 public class ListViewAndroidExample extends Activity {
    ListView listView ;
    int flag=0;//parent
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_list_view_android_example);

        // Get ListView object from xml
        listView = (ListView) findViewById(R.id.list);

        // Defined Array values to show in ListView
        String[] values_parent = new String[] { "Android List View", 
                                         "Adapter implementation",
                                         "Simple List View In Android",
                                         "Create List View Android", 
                                         "Android Example", 
                                         "List View Source Code", 
                                         "List View Array Adapter", 
                                         "Android Example List View" 
                                        };

        String[] values_child= new String[] { "Child 1", 
              "Child 2",
              "Child 3",
              "Child 4"
             };
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
          android.R.layout.simple_list_item_1, android.R.id.text1, values_parent);


        // Assign adapter to ListView
        listView.setAdapter(adapter); 

        // ListView Item Click Listener
        listView.setOnItemClickListener(new OnItemClickListener() {

              @Override
              public void onItemClick(AdapterView<?> parent, View view,
                 int position, long id) {

               // ListView Clicked item index
               int itemPosition     = position;

              if(flag=0)
               {
                flag=1;
                 adapter = new ArrayAdapter<String>(this,
          android.R.layout.simple_list_item_1, android.R.id.text1, values_child);
                }
                else
                    {
                 flag=0;
                   }

              }

         }); 
    }



@Override
public void onBackPressed() {
    // TODO Auto-generated method stub
   if(flag=0)
     finish();
   else{
     adapter = new ArrayAdapter<String>(this,
          android.R.layout.simple_list_item_1, android.R.id.text1, values_parent);
      }
}

}

}

如何在Android中的谷歌地图上的给定位置显示标记？

4 个答案: