android如何实现LBS定位实例代码

太过爱你忘了你带给我的痛 2023-10-18 19:56 6阅读 0赞

第一步：搭建LBS定位服务，如图所示：

![SouthEast][]

注释说明：locSDK.jar包和liblocSDK3.so是百度开发中心提供的（LBS）服务。自己去下载试试吧。

废话不多说，直接上代码：

public class WelcomeActivitys extends Activity \{  
// 相关组件获取  
private TextView user;  
private TextView time;  
private TextView xiqi;  
public TextView address;  
private GridView gridview;

// 百度地图LBS服务工具类  
private LocationClient mLocationClient;  
private MyLocationListener locationlistener;  
// 用户的当前位置  
private double x;  
private double y;

// 主线程  
Handler handler = new Handler() \{  
@Override  
public void handleMessage(Message msg) \{  
// TODO Auto-generated method stub  
switch (msg.what) \{  
// 解析用户的当前位置信息  
case 0:  
Bundle bundle = msg.getData();  
String a = String.valueOf(bundle.getDouble("x"));  
String b = String.valueOf(bundle.getDouble("y"));

// 解析用户的当前位置  
String add = AddressUtil.GetAddr(a, b);  
address.setText("用户当前位置：" + add);

break;

\};

@Override  
public void onCreate(Bundle savedInstanceState) \{  
// TODO Auto-generated method stub  
super.onCreate(savedInstanceState);  
// 全屏显示相关代码  
this.getWindow().setFlags(WindowManager.LayoutParams.FLAG\_FULLSCREEN,  
WindowManager.LayoutParams.FLAG\_FULLSCREEN);  
this.requestWindowFeature(Window.FEATURE\_NO\_TITLE);  
setContentView(R.layout.activity\_welcome);  
// 相关方法调用  
init();  
user.setText("欢迎你： 周先生");  
DateUtil.settime(time);  
DateUtil.setdate(xiqi);  
setimage();  
// 百度地图定位(LBS)  
mLocationClient = new LocationClient(this);  
locationlistener = new MyLocationListener(handler);  
mLocationClient.registerLocationListener(locationlistener);  
mLocationClient.start();  
if (mLocationClient != null && mLocationClient.isStarted()) \{  
setLocationOption();  
mLocationClient.requestLocation();  
\}  
\}

// 组件实例化相关方法  
public void init() \{  
user = (TextView) findViewById(R.id.user);  
time = (TextView) findViewById(R.id.time);  
xiqi = (TextView) findViewById(R.id.xiqi);  
address = (TextView) findViewById(R.id.address);  
// gridview组件实例化  
gridview = (GridView) findViewById(R.id.gridView);  
\}

// gridview组件设置图片和相关文字  
public void setimage() \{  
// gridView相关字符串资源和图片资源  
String\[\] names = new String\[\] \{ "e掌控功能一", "e掌控功能二", "e掌控功能三", "e掌控功能四",  
"e掌控功能五", "e掌控功能六" \};  
int\[\] images = new int\[\] \{ R.drawable.ic\_launcher,  
R.drawable.ic\_launcher, R.drawable.ic\_launcher,  
R.drawable.ic\_launcher, R.drawable.ic\_launcher,  
R.drawable.ic\_launcher \};

// gridView相关资源存储  
List<Map<String, Object>> listItems = new ArrayList<Map<String, Object>>();  
for (int i = 0; i < names.length; i++) \{  
Map<String, Object> listItem = new HashMap<String, Object>();  
listItem.put("images", images\[i\]);  
listItem.put("names", names\[i\]);  
listItems.add(listItem);  
\}

// 创建资源适配器  
SimpleAdapter adapter = new SimpleAdapter(WelcomeActivitys.this,  
listItems, R.layout.gridview\_item, new String\[\] \{ "images",  
"names" \}, new int\[\] \{ R.id.ItemImage, R.id.ItemText \});  
gridview.setAdapter(adapter);

// 为gridView创建监听器  
gridview.setOnItemClickListener(new OnItemClickListener() \{  
@Override  
public void onItemClick(AdapterView<?> adapter, View view,  
int position, long arg3) \{  
switch (position) \{  
case 0:  
// 跳转到相关的功能界面0  
Toast.makeText(WelcomeActivitys.this, "跳转到功能界面0",  
Toast.LENGTH\_LONG).show();  
break;  
case 1:  
// 跳转到相关的功能界面1  
Toast.makeText(WelcomeActivitys.this, "跳转到功能界面1",  
Toast.LENGTH\_LONG).show();  
break;  
case 2:  
// 跳转到相关的功能界面2  
Toast.makeText(WelcomeActivitys.this, "跳转到功能界面2",  
Toast.LENGTH\_LONG).show();  
break;  
case 3:  
// 跳转到相关的功能界面3  
Toast.makeText(WelcomeActivitys.this, "跳转到功能界面3",  
Toast.LENGTH\_LONG).show();  
break;  
case 4:  
// 跳转到相关的功能界面4  
Toast.makeText(WelcomeActivitys.this, "跳转到功能界面4",  
Toast.LENGTH\_LONG).show();  
break;  
case 5:  
// 跳转到相关的功能界面5  
Toast.makeText(WelcomeActivitys.this, "跳转到功能界面5",  
Toast.LENGTH\_LONG).show();  
break;  
\}  
\}

\});

// 实时位置的显示的问题（LBS）  
public class MyLocationListener implements BDLocationListener \{  
private Handler handle;

public MyLocationListener(Handler handle) \{  
super();  
this.handle = handle;  
\}

@Override  
public void onReceiveLocation(BDLocation location) \{  
// TODO Auto-generated method stub  
x = location.getLatitude();  
y = location.getLongitude();

Message message = new Message();  
Bundle bundle = new Bundle();  
bundle.putDouble("x", x);  
bundle.putDouble("y", y);  
message.setData(bundle);  
message.what = 0;  
handle.sendMessage(message);  
\}

@Override  
public void onReceivePoi(BDLocation arg0) \{  
// TODO Auto-generated method stub  
\}  
\}

// 查询条件显示  
private void setLocationOption() \{  
LocationClientOption option = new LocationClientOption();  
option.setOpenGps(true);  
option.setAddrType("all");// 返回的定位结果包含地址信息  
option.setCoorType("bd09ll");// 返回的定位结果是百度经纬度,默认值gcj02  
option.setScanSpan(5000);// 设置发起定位请求的间隔时间为5000ms  
option.disableCache(true);// 禁止启用缓存定位  
option.setPoiNumber(5); // 最多返回POI个数  
option.setPoiDistance(1000); // poi查询距离  
option.setPoiExtraInfo(true); // 是否需要POI的电话和地址等详细信息  
mLocationClient.setLocOption(option);  
\}

第二步：地理位置信息的解析（工具栏）

public class AddressUtil \{  
public static String GetAddr(String latitude, String longitude) \{  
List list=new ArrayList();  
String addr = "";  
// 也可以是[http://maps.google.cn/maps/geo?output=csv&key=abcdef&q=%s,%s][http_maps.google.cn_maps_geo_output_csv_key_abcdef_q_s_s]，不过解析出来的是英文地址  
// 密钥可以随便写一个key=abc  
// output=csv,也可以是xml或json，不过使用csv返回的数据最简洁方便解析  
// String url = String.format(  
// "[http://maps.googleapis.com/maps/api/geocode/json?sensor=true&language=zh-cn&latlng=%s,%s][http_maps.googleapis.com_maps_api_geocode_json_sensor_true_language_zh-cn_latlng_s_s]",  
// latitude, longitude);  
String url = String.format("[http://apis.mapabc.com/rgeocode/simple?sid=7002&region="+longitude+","+latitude+"&range=1000&resType=json&rid=123&key=f03346eb3a99be025979045e8fa1a281c5159611ba5cd95248561cd8efb696214e6fdfa72527114d][http_apis.mapabc.com_rgeocode_simple_sid_7002_region_longitude_latitude_range_1000_resType_json_rid_123_key_f03346eb3a99be025979045e8fa1a281c5159611ba5cd95248561cd8efb696214e6fdfa72527114d]");  
URL myURL = null;  
URLConnection httpsConn = null;  
JSONObject json = null;  
try \{  
myURL = new URL(url);  
\} catch (MalformedURLException e) \{  
e.printStackTrace();  
return null;  
\}  
try \{  
httpsConn = (URLConnection) myURL.openConnection();  
if (httpsConn != null) \{  
InputStreamReader insr = new InputStreamReader(  
httpsConn.getInputStream(), "gbk");  
BufferedReader br = new BufferedReader(insr);  
String result="";  
String data;  
while ((data = br.readLine()) != null) \{  
result+=data;  
\}  
  
result=result.substring(result.indexOf("\{"), result.length());  
json=new JSONObject(result);  
int i=result.indexOf("posdes");  
if(i>-1)\{  
String posdes=json.getString("posdes");  
String\[\] address=posdes.toString().split(";");  
for(String a:address)\{  
if(a!=null)\{  
list.add(a);  
\}  
\}  
\}  
if(list.size()<2&&list.size()>0)\{  
addr="";  
addr+=(String)list.get(0)+"附近";  
\}  
if(list.size()==2)\{  
addr="";  
System.out.println("list=2--------------------");  
String array=(String)list.get(1);  
String\[\] arrays=array.split(",");  
List alist=new ArrayList();  
for(String a:arrays)\{  
if(a!=null)\{  
alist.add(a);  
\}  
\}  
  
addr+=(String)list.get(0)+(String)alist.get(0);  
if(alist.size()>1)\{  
addr+=","+(String)alist.get(1);  
\}  
addr+="附近";  
\}  
if(list.size()>2)\{  
addr="";  
System.out.println("list>2--------------------");  
String array=(String)list.get(2);  
String\[\] arrays=array.split(",");  
List alist=new ArrayList();  
for(String a:arrays)\{  
if(a!=null)\{  
alist.add(a);  
\}  
\}  
String temp=(String)list.get(1);  
addr+=(String)list.get(0)+temp+(String)alist.get(0);  
if(alist.size()>1)\{  
addr+=","+(String)alist.get(1);  
\}  
addr+="附近";  
\}  
System.out.println(addr+"\\t------------");  
insr.close();  
\}  
\} catch (IOException e) \{  
e.printStackTrace();  
System.out.println(e.getMessage());  
return null;  
\} catch (JSONException e) \{  
// TODO Auto-generated catch block  
e.printStackTrace();  
\}  
if("附近附近".equals(addr))\{  
addr="";  
\}  
return addr;  
\}

[SouthEast]: https://img-blog.csdn.net/20130708142135031?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhvdXpoaXdlbmdhbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast
[http_maps.google.cn_maps_geo_output_csv_key_abcdef_q_s_s]: http://maps.google.cn/maps/geo?output=csv&key=abcdef&q=%s,%s
[http_maps.googleapis.com_maps_api_geocode_json_sensor_true_language_zh-cn_latlng_s_s]: http://maps.googleapis.com/maps/api/geocode/json?sensor=true&language=zh-cn&latlng=%s,%s
[http_apis.mapabc.com_rgeocode_simple_sid_7002_region_longitude_latitude_range_1000_resType_json_rid_123_key_f03346eb3a99be025979045e8fa1a281c5159611ba5cd95248561cd8efb696214e6fdfa72527114d]: http://apis.mapabc.com/rgeocode/simple?sid=7002&region='%20rel=