public class MyApplication extends Application{
  public LocationClient mLocationClient = null;
  public GeofenceClient mGeofenceClient;
  public MyLocationListenner myListener = new MyLocationListenner();
  public static String TAG = \"MyApplication\";
  private static MyApplication mInstance = null;
  @Override
  public void onCreate(){
    mInstance = this;
    mLocationClient = new LocationClient(this);
    /**
     * 项目的key，自己到官网申请 http://lbsyun.baidu.com/apiconsole/key
     */
    mLocationClient.setAK(\"你的应用Key\");
    mLocationClient.registerLocationListener(myListener);
    mGeofenceClient = new GeofenceClient(this);
    super.onCreate();
    Log.d(TAG, \"... Application onCreate... pid=\" + Process.myPid());
  }
  public static MyApplication getInstance(){
    return mInstance;
  }
  /**
   * 停止定位
   */
  public void stopLocationClient(){
    if (mLocationClient != null && mLocationClient.isStarted()){
      mLocationClient.stop();
    } 
  }
  /**
   * 发起定位
   */
  public void requestLocationInfo(){
    setLocationOption();
    if (mLocationClient != null && !mLocationClient.isStarted()){
      mLocationClient.start();
    }
    if (mLocationClient != null && mLocationClient.isStarted()){
      mLocationClient.requestLocation();
    } 
  }
  /**
   * 设置百度地图的相关参数
   */
  private void setLocationOption(){
    LocationClientOption option = new LocationClientOption();
    option.setOpenGps(true); // 打开gps
    option.setCoorType(\"bd09ll\"); // 设置坐标类型
    option.setServiceName(\"com.baidu.location.service_v2.9\");
    option.setPoiExtraInfo(true);
    option.setAddrType(\"all\");
    option.setPoiNumber(10);
    option.disableCache(true);
    mLocationClient.setLocOption(option);
  }
  /**
   * 监听函数，有更新位置的时候，格式化成字符串，输出到屏幕中
   */
  public class MyLocationListenner implements BDLocationListener
  {
    @Override
    public void onReceiveLocation(BDLocation location){
      if (location == null){
        sendBroadCast(\"定位失败!\");
        return;
      }
      sendBroadCast(location.getAddrStr());
    }
    public void onReceivePoi(BDLocation poiLocation){
      if (poiLocation == null){
        sendBroadCast(\"定位失败!\");
        return;
      }
      sendBroadCast(poiLocation.getAddrStr());
    }
  }
  /**
   * 得到发送广播
   * @param address
   */
  public void sendBroadCast(String address){
        stopLocationClient();
    Intent intent = new Intent(MainActivity.LOCATION_BCR);
    intent.putExtra(\"address\", address);
    sendBroadcast(intent);
  }
}

public class MainActivity extends Activity{
  public static String TAG = \"LocTestDemo\";
  private BroadcastReceiver broadcastReceiver;
  public static String LOCATION_BCR = \"location_bcr\";
  private Button locBtn;
  private TextView locInfo;
  private MyApplication application;
  @Override
  protected void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    application=(MyApplication)super.getApplication();
    initialize();
    initializeViews();
    initializeListeners();
  }
  private void initialize(){
    registerBroadCastReceiver();//注册广播
  }
  private void initializeViews()
  {
    locBtn = (Button) findViewById(R.id.location);
    locInfo = (TextView) findViewById(R.id.location_info);
  }
  private void initializeListeners()
  {
    locBtn.setOnClickListener(new OnClickListener(){
      @Override
      public void onClick(View v){
        locInfo.setText(\"定位中...\");
      //调用请求定位信息
      application.requestLocationInfo();
      }
    });
  }
  /**
   * 注册一个广播，监听定位结果，接受广播获得地址信息
   */
  private void registerBroadCastReceiver()
  {
    broadcastReceiver = new BroadcastReceiver(){
    public void onReceive(Context context, Intent intent){
      String address = intent.getStringExtra(\"address\");
        locInfo.setText(address);
      }
    };
    IntentFilter intentToReceiveFilter = new IntentFilter();
    intentToReceiveFilter.addAction(LOCATION_BCR);
    registerReceiver(broadcastReceiver, intentToReceiveFilter);
  }
  @Override
  protected void onDestroy(){
    super.onDestroy();
    unregisterReceiver(broadcastReceiver);
  }
}

<?xml version=\"1.0\" encoding=\"utf-8\"?>
<manifest xmlns:android=\"http://schemas.android.com/apk/res/android\"
  package=\"com.jereh.baidulocation\"
  android:versionCode=\"1\"
  android:versionName=\"1.0\" >
  <uses-sdk
    android:minSdkVersion=\"8\"
    android:targetSdkVersion=\"17\" />
  <application
    android:name=\"com.jereh.baidulocation.MyApplication\"
    android:allowBackup=\"true\"
    android:icon=\"@drawable/ic_launcher\"
    android:label=\"@string/app_name\"
    android:theme=\"@style/AppTheme\" >
    <activity
      android:name=\"com.jereh.baidulocation.MainActivity\"
      android:label=\"@string/app_name\" >
      <intent-filter>
        <action android:name=\"android.intent.action.MAIN\" />
        <category android:name=\"android.intent.category.LAUNCHER\" />
      </intent-filter>
    </activity>
    <service
      android:name=\"com.baidu.location.f\"
      android:enabled=\"true\"
      android:process=\":remote\" >
      <intent-filter>
        <action android:name=\"com.baidu.location.service_v2.2\" >
        </action>
      </intent-filter>
    </service>
  </application>
  <uses-permission android:name=\"android.permission.ACCESS_COARSE_LOCATION\" >
  </uses-permission>
  <uses-permission android:name=\"android.permission.ACCESS_FINE_LOCATION\" >
  </uses-permission>
  <uses-permission android:name=\"android.permission.ACCESS_WIFI_STATE\" >
  </uses-permission>
  <uses-permission android:name=\"android.permission.ACCESS_NETWORK_STATE\" >
  </uses-permission>
  <uses-permission android:name=\"android.permission.CHANGE_WIFI_STATE\" >
  </uses-permission>
  <uses-permission android:name=\"android.permission.READ_PHONE_STATE\" >
  </uses-permission>
  <uses-permission android:name=\"android.permission.WRITE_EXTERNAL_STORAGE\" >
  </uses-permission>
  <uses-permission android:name=\"android.permission.INTERNET\" />
  <uses-permission android:name=\"android.permission.MOUNT_UNMOUNT_FILESYSTEMS\" >
  </uses-permission>
  <uses-permission android:name=\"android.permission.READ_LOGS\" >
  </uses-permission>
  <uses-permission android:name=\"android.permission.VIBRATE\" />
  <uses-permission android:name=\"android.permission.WAKE_LOCK\" />
  <uses-permission android:name=\"android.permission.WRITE_SETTINGS\" />
</manifest>