定位

public class MainActivity extends Activity {
	private MapView mapView;
	private LocationClient locationClient;
	private double latitude,longitude;
	private BaiduMap mBaiduMap;
	private BDLocationListener locationListener = new BDLocationListener() {
		
		@Override
		public void onReceiveLocation(BDLocation location) {
			latitude = location.getLatitude();
			longitude = location.getLongitude();
			
			MyLocationData locationData = new MyLocationData.Builder()
			.accuracy(location.getRadius()).latitude(latitude).longitude(longitude).build();
			mBaiduMap.setMyLocationData(locationData);
			LatLng pt = new LatLng(latitude, longitude);
			MapStatus mapStatus = new MapStatus.Builder()
			.target(pt).zoom(18).build();
			MapStatusUpdate statusUpdate = MapStatusUpdateFactory.newMapStatus(mapStatus);
			mBaiduMap.setMapStatus(statusUpdate);
			BitmapDescriptor bitmap = BitmapDescriptorFactory.fromResource(R.drawable.location);
			//MyLocationConfiguration config = new MyLocationConfiguration(locationClient, true, bitmap);
			mapView.refreshDrawableState();
			StringBuilder sb = new StringBuilder();
			sb.append(location.getProvince())
			.append(location.getCity()).append(location.getStreet());
			Toast.makeText(getApplication(), sb.toString(), Toast.LENGTH_SHORT).show();
		}
	};
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		 //在使用SDK各组件之前初始化context信息，传入ApplicationContext  
        //注意该方法要再setContentView方法之前实现  
        SDKInitializer.initialize(getApplicationContext());  
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);  
        //获取地图控件引用  
        mapView = (MapView) findViewById(R.id.mapView);
        mBaiduMap = mapView.getMap();
        locationClient = new LocationClient(getApplicationContext());
        LocationClientOption option = new LocationClientOption();
        option.setCoorType("bd09ll");
        option.setLocationMode(LocationMode.Hight_Accuracy);
        option.setScanSpan(5000);
        option.setIsNeedAddress(true);
        option.setOpenGps(true);
        option.setNeedDeviceDirect(true);
        locationClient.setLocOption(option);
        locationClient.registerLocationListener(locationListener);
        locationClient.start();
        
        mBaiduMap.setMyLocationEnabled(true);
        
	}
	@Override
	protected void onResume() {
		super.onResume();
		mapView.onResume();
		setLocation();
	}
	@Override
	protected void onPause() {
		super.onPause();
		mapView.onPause();
	}
	@Override
	protected void onDestroy() {
		mapView.onDestroy();
		locationClient.unRegisterLocationListener(locationListener);
		locationClient.stop();
		super.onDestroy();
	}
	
	private void setLocation(){
		LatLng pt = new LatLng(latitude, longitude);
		BitmapDescriptor bitmap = BitmapDescriptorFactory.fromResource(R.drawable.location);
		OverlayOptions option = new MarkerOptions()
		.position(pt).icon(bitmap);
		mBaiduMap.addOverlay(option);
	}