百度地图定位为什么经纬度是准确的而在地图上标注却偏离很远

小横 2015-05-11 05:07:15

我是按网上论坛写的让后下载他们的demo地图上标注是正确的而我自己的地图上标注却偏离很远

package com.example.baidu_text;



import android.app.Activity;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;



import com.baidu.lbsapi.BMapManager;

import com.baidu.location.BDLocation;

import com.baidu.location.BDLocationListener;

import com.baidu.location.LocationClient;

import com.baidu.location.LocationClientOption;

import com.baidu.location.LocationClientOption.LocationMode;

import com.baidu.mapapi.SDKInitializer;

import com.baidu.mapapi.map.BaiduMap;

import com.baidu.mapapi.map.BitmapDescriptor;

import com.baidu.mapapi.map.BitmapDescriptorFactory;

import com.baidu.mapapi.map.DotOptions;

import com.baidu.mapapi.map.MapStatusUpdate;

import com.baidu.mapapi.map.MapStatusUpdateFactory;

import com.baidu.mapapi.map.MapView;

import com.baidu.mapapi.map.MyLocationConfiguration;

import com.baidu.mapapi.map.MyLocationData;

import com.baidu.mapapi.map.TextOptions;

import com.baidu.mapapi.model.LatLng;

import com.baidu.nplatform.comapi.map.MapController;



public class MainActivity extends Activity {

	MapView mMapView = null;

	BaiduMap mBaiduMap;

	String mm;

	Button button;

	double latitude;

	double longitude;

	BaiduMap bdMap;

	private BMapManager mBMapManager;

	BitmapDescriptor mCurrentMarker;

	private MapController mMapController = null;

	BDLocation location;

	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		

        SDKInitializer.initialize(getApplicationContext());  

		setContentView(R.layout.activity_main);

		mMapView = (MapView)findViewById(R.id.bmapView);

		

		bdMap = mMapView.getMap();

	

		

		

	LocationClient locationClient = new LocationClient(getApplicationContext());

		LocationClientOption locOption = new LocationClientOption();

		locOption.setLocationMode(LocationMode.Hight_Accuracy);

		locOption.setCoorType("bd0911");

		locOption.setScanSpan(5000);

		locOption.setIsNeedAddress(true);

		locOption.setNeedDeviceDirect(true);

		locationClient.setLocOption(locOption);

		locationClient.registerLocationListener(new MyLocationListener());

		locationClient.start();

		button = (Button)findViewById(R.id.button);

		button.setOnClickListener(new View.OnClickListener() {

			

			@Override

			public void onClick(View v) {

				

				LatLng ll = new LatLng(latitude, longitude);  

	            MapStatusUpdate msu = MapStatusUpdateFactory.newLatLng(ll);  

	            bdMap.animateMapStatus(msu); 

				Toast.makeText(MainActivity.this, mm, Toast.LENGTH_LONG).show();

				TextOptions textOptions = new TextOptions();

				textOptions.bgColor(0xFFFF00)

				.fontSize(10)

				.fontColor(0xFFFF00FF)

				.text("当前位置")

				.rotate(-30)

				

				.position(ll);

				bdMap.addOverlay(textOptions);

			

				String mm =latitude+"";

				String nn =longitude+"";

				Toast.makeText(MainActivity.this, mm+"__"+nn, Toast.LENGTH_LONG).show();

				}

		});

		

		

	}

	

class MyLocationListener implements BDLocationListener{

		

		@Override

		public void onReceiveLocation(BDLocation arg0) {

		mm = arg0.getCity();

		latitude  = arg0.getLatitude();

		longitude = arg0.getLongitude();

			location = arg0;

		

			

		}

		

	}

	 @Override  

	    protected void onDestroy() {  

	        super.onDestroy();  

	       

	        mMapView.onDestroy();  

	    }  

	    @Override  

	    protected void onResume() {  

	        super.onResume();  

	       

	        mMapView.onResume();  

	        }  

	    @Override  

	    protected void onPause() {  

	        super.onPause();  

	    

	        mMapView.onPause();  

	        }  

	

	@Override

	public boolean onCreateOptionsMenu(Menu menu) {

		

		getMenuInflater().inflate(R.menu.main, menu);

		return true;

	}



	@Override

	public boolean onOptionsItemSelected(MenuItem item) {

		

		int id = item.getItemId();

		if (id == R.id.action_settings) {

			return true;

		}

		return super.onOptionsItemSelected(item);

	}

}