所以我有这个代码
public class List extends ListActivity implements LocationListener {
int ct_id;
String[] ct_number = null;
String[] ct_address = null;
String[] ct_phone = null;
String[] ct_fax = null;
String[] ct_email = null;
String[] ct_city = null;
String[] ct_province = null;
String[] ct_country = null;
String[] ct_pcode = null;
String[] ct_lat = null;
String[] ct_long = null;
String[] ct_distance = null;
String[] ct_show = null;
String[] ct_listinfo = null;
private LocationManager locationManager;
@Override
public void onCreate(Bundle bundle) {
super.onCreate(bundle);
//setContentView(R.layout.timslist);
locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000L, 500.0f, this);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000L, 500.0f, this);
Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
double lat = location.getLatitude();
double lng = location.getLongitude();
String result = null;
InputStream is = null;
StringBuilder sb = null;
//http post
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://www.somedomain.com/list.php?lat=" + lat + "&long=" + lng + "");
//httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}catch(Exception e){
Log.e("log_tag", "Error in http connection"+e.toString());
}
//convert response to string
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
sb = new StringBuilder();
sb.append(reader.readLine() + "\n");
String line="0";
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result=sb.toString();
}catch(Exception e){
Log.e("log_tag", "Error converting result"+e.toString());
}
//paring data
JSONArray jArray;
try{
jArray = new JSONArray(result);
JSONObject json_data=null;
ct_number=new String[jArray.length()];
ct_address=new String[jArray.length()];
ct_phone=new String[jArray.length()];
ct_fax=new String[jArray.length()];
ct_email=new String[jArray.length()];
ct_city=new String[jArray.length()];
ct_province=new String[jArray.length()];
ct_country=new String[jArray.length()];
ct_pcode=new String[jArray.length()];
ct_lat=new String[jArray.length()];
ct_long=new String[jArray.length()];
ct_distance=new String[jArray.length()];
ct_listinfo=new String[jArray.length()];
for(int i=0;i<jArray.length();i++){
json_data = jArray.getJSONObject(i);
ct_id=json_data.getInt("location_id");
ct_number[i]=json_data.getString("store_number");
ct_address[i]=json_data.getString("store_address");
ct_phone[i]=json_data.getString("store_phone");
ct_fax[i]=json_data.getString("store_fax");
ct_email[i]=json_data.getString("store_email");
ct_city[i]=json_data.getString("store_city");
ct_province[i]=json_data.getString("store_province");
ct_country[i]=json_data.getString("store_country");
ct_pcode[i]=json_data.getString("store_pcode");
ct_lat[i]=json_data.getString("store_lat");
ct_long[i]=json_data.getString("store_long");
ct_distance[i]=json_data.getString("store_distance");
ct_listinfo[i] = new String (ct_address[i] + "\n" + ct_city[i] + ", " + ct_province[i] + " - " + ct_distance[i] + " Km");
}
}
catch(JSONException e1){
Toast.makeText(getBaseContext(), "No Addresses Found" ,Toast.LENGTH_LONG).show();
} catch (ParseException e1) {
e1.printStackTrace();
}
setListAdapter(new ArrayAdapter<String>(this,R.layout.listview,ct_listinfo));
ListView lv;
lv = getListView();
lv.setTextFilterEnabled(true);
lv.setBackgroundColor(Color.rgb(83, 05, 14));
lv.setCacheColorHint(Color.rgb(83, 05, 14));
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> timslist, View view,
int position, long id) {
Intent i1 = new Intent(getApplicationContext(), TimsListMore.class);
i1.putExtra("ct_number_pass", ct_number[position]);
i1.putExtra("ct_address_pass", ct_address[position]);
i1.putExtra("ct_phone_pass", ct_phone[position]);
i1.putExtra("ct_city_pass", ct_city[position]);
i1.putExtra("ct_province_pass", ct_province[position]);
i1.putExtra("ct_country_pass", ct_country[position]);
i1.putExtra("ct_pcode_pass", ct_pcode[position]);
i1.putExtra("ct_distance_pass", ct_distance[position]);
startActivity(i1);
}
});
}
@Override
protected void onStart() {
super.onStart();
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000L, 500.0f, this);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000L, 500.0f, this);
}
@Override
protected void onStop() {
super.onStop();
locationManager.removeUpdates(this);
}
public void onLocationChanged(Location location) {
if (location != null) {
location.getLatitude();
location.getLongitude();
}
}
public void onProviderDisabled(String provider) {
// required for interface, not used
Toast.makeText(getApplicationContext(), " Your " + provider + " is disabled. Please enable it!",
Toast.LENGTH_LONG).show();
}
public void onProviderEnabled(String provider) {
Toast.makeText(this, "Enabled new provider " + provider,
Toast.LENGTH_SHORT).show();
}
public void onStatusChanged(String provider, int status, Bundle extras) {
// required for interface, not used
}
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
我的问题是我需要它拥有当前位置然后获取json数组中的数据库
//http post
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://www.somedomain.com/list.php?lat=" + lat + "&long=" + lng + "");
//httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
}catch(Exception e){
Log.e("log_tag", "Error in http connection"+e.toString());
}
这种方式，当我要求信息时，它将当前的lat和long添加到请求中。现在这一切都有效，但它已经离开旧位置，而不是等待当前的位置。
答案 0 :(得分：0)
您使用以下代码可能对您有所帮助。
import java.util.Timer;
import java.util.TimerTask;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
public class MyLocation {
Timer timer1;
LocationManager lm;
LocationResult locationResult;
boolean gps_enabled=false;
boolean network_enabled=false;
public boolean getLocation(Context context, LocationResult result)
{
//I use LocationResult callback class to pass location value from MyLocation to user code.
locationResult=result;
if(lm==null)
lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
//exceptions will be thrown if provider is not permitted.
try{gps_enabled=lm.isProviderEnabled(LocationManager.GPS_PROVIDER);}catch(Exception ex){}
try{network_enabled=lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);}catch(Exception ex){}
//don't start listeners if no provider is enabled
if(!gps_enabled && !network_enabled)
return false;
if(gps_enabled)
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListenerGps);
if(network_enabled)
lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNetwork);
timer1=new Timer();
timer1.schedule(new GetLastLocation(), 60000);
return true;
}
LocationListener locationListenerGps = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
lm.removeUpdates(this);
lm.removeUpdates(locationListenerNetwork);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
LocationListener locationListenerNetwork = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
lm.removeUpdates(this);
lm.removeUpdates(locationListenerGps);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
class GetLastLocation extends TimerTask {
@Override
public void run() {
lm.removeUpdates(locationListenerGps);
lm.removeUpdates(locationListenerNetwork);
Location net_loc=null, gps_loc=null;
if(gps_enabled)
gps_loc=lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if(network_enabled)
net_loc=lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
//if there are both values use the latest one
if(gps_loc!=null && net_loc!=null){
if(gps_loc.getTime()>net_loc.getTime())
locationResult.gotLocation(gps_loc);
else
locationResult.gotLocation(net_loc);
return;
}
if(gps_loc!=null){
locationResult.gotLocation(gps_loc);
return;
}
if(net_loc!=null){
locationResult.gotLocation(net_loc);
return;
}
locationResult.gotLocation(null);
}
}
public static abstract class LocationResult{
public abstract void gotLocation(Location location);
}
}
现在在另一个Main类文件中使用此文件
MyLocation myLocation = new MyLocation();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
findCurrentLocation();
}
private void findCurrentLocation() {
myLocation.getLocation(this, locationResult);
}
public LocationResult locationResult = new LocationResult() {
@Override
public void gotLocation(Location location) {
// TODO Auto-generated method stub
if (location != null) {
String strloc = location.getLatitude() + ","
+ location.getLongitude();
}
}
};
现在Toast messge of“strloc”。
谢谢， NIK ...