百度地图Geocoding API 用法

看了好久，犯了很多错，看的我自己都烦了，再试试在新浪博客上的代码是怎么显示的

下边是Mainactivity.java

public class MainActivity extends Activity {

public static final int SHOW_LOCATION = 0;

private TextView positionTextView;

private LocationManager locationManager;

private String provider;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

positionTextView = (TextView)findViewById(R.id.position_text_view);

locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);

// 获取所有可用的位置提供器

List providerList = locationManager.getProviders(true);

if (providerList.contains(LocationManager.GPS_PROVIDER)){

provider = LocationManager.GPS_PROVIDER;

} else if(providerList.contains(LocationManager.NETWORK_PROVIDER)) {

provider = LocationManager.NETWORK_PROVIDER;

} else {

// 当没有可用的位置提供器时，弹出Toast提示用户

Toast.makeText(this, "No location provider to use",

Toast.LENGTH_SHORT).show();

return;

}

Location location =locationManager.getLastKnownLocation(provider);

if (location != null) {

// 显示当前设备的位置信息

showLocation(location);

}

locationManager.requestLocationUpdates(provider, 5000,1,

locationListener);

}

protected void onDestroy() {

super.onDestroy();

if (locationManager != null) {

// 关闭程序时将监听器移除

locationManager.removeUpdates(locationListener);

}

}

LocationListener locationListener = new LocationListener(){

@Override

public void onStatusChanged(String provider, int status,Bundle extras) {

}

@Override

public void onProviderEnabled(String provider) {

}

@Override

public void onProviderDisabled(String provider) {

}

@Override

public void onLocationChanged(Location location) {

// 更新当前设备的位置信息

showLocation(location);

}

};

private void showLocation(final Location location) {

new Thread(new Runnable() {

@Override

public void run() {

try {

// 组装反向地理编码的接口地址

StringBuilder url = new StringBuilder();

url.append("http://api.map.baidu.com/geocoder/v2/?ak=nUvlnh8wk6cDupYs5foacyXz&location=");

url.append(location.getLatitude()).append(",")

.append(location.getLongitude());

url.append("&output=json&pois=1");

HttpClient httpClient = new DefaultHttpClient();

HttpGet httpGet = new HttpGet(url.toString());

// 在请求消息头中指定语言，保证服务器会返回中文数据

httpGet.addHeader("Accept-Language", "zh-CN");

HttpResponse httpResponse = httpClient.execute(httpGet);

if (httpResponse.getStatusLine().getStatusCode() == 200){

HttpEntity entity = httpResponse.getEntity();

String response = EntityUtils.toString(entity, "utf-8");

JSONObject jsonObject = new JSONObject(response);

if(jsonObject.get("status").toString().equals("0")){

StringBuilder address =new StringBuilder();

address.append(jsonObject.getJSONObject("result").getString("formatted_address"));

address.append("\r\n").append("纬度：").append(location.getLatitude()).append("\r\n")

.append("经度").append(location.getLongitude());

String aString =address.toString();

Log.d("Mainactivity",aString);

Message message = new Message();

message.what = SHOW_LOCATION;

message.obj = aString;

handler.sendMessage(message);

}

}

} catch (Exception e) {

e.printStackTrace();

}

}

}).start();

}

private Handler handler = new Handler() {

public void handleMessage(Message msg) {

switch (msg.what) {

case SHOW_LOCATION:

String currentPosition = (String) msg.obj;

positionTextView.setText(currentPosition);

break;

default:

break;

}

}

};

}