android 百度地图定位当前的位置

【实例截图】

【核心代码】

package com.location.activity;

import android.location.Location;
import android.os.Bundle;
import android.widget.TextView;

import com.baidu.mapapi.BMapManager;
import com.baidu.mapapi.LocationListener;
import com.baidu.mapapi.MKLocationManager;
import com.baidu.mapapi.MapActivity;

/**
 * 创建Activity（继承com.baidu.mapapi.MapActivity）
 */
public class LocationActivity extends MapActivity implements LocationListener {
	private BMapManager mapManager;
	private MKLocationManager mLocationManager = null;

	private TextView latText;
	private TextView lonText;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		latText = (TextView) findViewById(R.id.lat);
		lonText = (TextView) findViewById(R.id.lon);

		// 初始化MapActivity
		mapManager = new BMapManager(getApplication());
		// init方法的第一个参数需填入申请的API Key
		mapManager.init("C66C0501D0280744759A6957C42543AE38F5D540", null);
		super.initMapActivity(mapManager);

		mLocationManager = mapManager.getLocationManager();
		// 注册位置更新事件
		mLocationManager.requestLocationUpdates(this);
		// 使用GPS定位
		mLocationManager.enableProvider((int) MKLocationManager.MK_GPS_PROVIDER);
	}

	@Override
	protected boolean isRouteDisplayed() {
		return false;
	}

	@Override
	protected void onDestroy() {
		if (mapManager != null) {
			mapManager.destroy();
			mapManager = null;
		}
		mLocationManager = null;
		super.onDestroy();
	}

	@Override
	protected void onPause() {
		if (mapManager != null) {
			mapManager.stop();
		}
		super.onPause();
	}

	@Override
	protected void onResume() {
		if (mapManager != null) {
			mapManager.start();
		}
		super.onResume();
	}

	/**
	 * 根据MyLocationOverlay配置的属性确定是否在地图上显示当前位置
	 */
	@Override
	protected boolean isLocationDisplayed() {
		return false;
	}

	/**
	 * 当位置发生变化时触发此方法
	 * 
	 * @param location 当前位置
	 */
	public void onLocationChanged(Location location) {
		if (location != null) {
			// 显示定位结果
			lonText.setText("当前经度："   location.getLongitude());
			latText.setText("当前纬度："   location.getLatitude());
		}
	}
}