获取与AsyncTask的GPS坐标 [英] Get gps coordinates with asyncTask
本文介绍了获取与AsyncTask的GPS坐标的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我需要让我的当前坐标。我尝试下，但没有得到结果。
公共类FragmentNear扩展SherlockFragment工具
android.location.LocationListener {
@覆盖
公共查看onCreateView（LayoutInflater充气器，容器的ViewGroup，
捆绑savedInstanceState）{
的LocationManager =（的LocationManager）getActivity（）。getSystemService（
Context.LOCATION_SERVICE）;
locationManager.requestLocationUpdates（
LocationManager.GPS_PROVIDER，0，0，这一点）;
V = inflater.inflate（R.layout.fragment_near，NULL）;
DownloadWebPageTask DW =新DownloadWebPageTask（）;
dw.execute（）;
返回伏;
}@覆盖
公共无效onLocationChanged（位置LOC）{
如果（showMFD == 0）{
Log.d（myLogs，-------- onLoChanged+ myLat ++ myLong）;
myLat = loc.getLatitude（）;
myLong = loc.getLongitude（）;
Log.d（myLogs，-------- onLoChangedEnd+ myLat ++ myLong）;
}
}
公共无效showMFD（）{
showMFD ++;
//我的任务
}私有类DownloadWebPageTask扩展的AsyncTask＆LT;弦乐，太虚，字符串＆GT; {
@覆盖
保护字符串doInBackground（字符串的URL ...）{
Log.d（myLogs，背景）;
而（myLat == 0）
{ }
showMFD（）;
返回;
}
@覆盖
在preExecute保护无效（）
{
super.on preExecute（）;PB =新ProgressDialog（getActivity（））;
pb.setMessage（ПолучениеданныхGPS ...）;
pb.setProgressStyle（ProgressDialog.STYLE_SPINNER）;
pb.show（）;
}
@覆盖
保护无效onPostExecute（字符串结果）{
pb.dismiss（）;}
}
我的逻辑是在图片
解决方案
跟踪器类的一个示例使用WiFi或GPS经典（3G，H +，GPRS ...）
公共类GPSTracker扩展服务实现android.location.LocationListener {
/ **
*格式的属性
* /
私有静态最后弦乐TAG = GPSTracker.class.getSimpleName（）;
私人语境_context;
私有静态GPSTracker _instance;
//最小距离改变米的更新
私有静态最后长MIN_DISTANCE_CHANGE_FOR_UPDATES = 0; //米
//毫秒更新之间的最短时间
私有静态最后长MIN_TIME_BW_UPDATES = 1000 * 30 * 1; //分钟
//声明一个位置管理
受保护的LocationManager _locationManager;
/ **
* public属性
* /
布尔_isGPSEnabled = FALSE;
布尔_isNetworkEnabled = FALSE;
布尔_canGetLocation = FALSE;
公共场所_location;
双_latitude;
双_longitude; 公共GPSTracker（）{ _context = NULL;
} 公共静态GPSTracker的getInstance（）{ 如果（_instance == NULL）{
_instance =新GPSTracker（）;
}
返回_instance;
} 公共无效SET_CONTEXT（上下文的背景下）{ this._context =背景;
} 公共场所的getLocation（上下文的背景下）{ _context =背景;
尝试{
_locationManager =（的LocationManager）_context.getSystemService（LOCATION_SERVICE）;
_isGPSEnabled = _locationManager.isProviderEnabled（LocationManager.GPS_PROVIDER）;
_isNetworkEnabled = _locationManager.isProviderEnabled（LocationManager.NETWORK_PROVIDER）;
如果（！_isGPSEnabled＆放大器;＆安培;！_isNetworkEnabled）{
//没有启用网络供应商
}
其他{
this._canGetLocation = TRUE;
如果（_isNetworkEnabled）{
_locationManager.requestLocationUpdates（LocationManager.NETWORK_PROVIDER，MIN_TIME_BW_UPDATES，MIN_DISTANCE_CHANGE_FOR_UPDATES，这一点）;
Log.d（网络，网络）;
如果（_locationManager！= NULL）{
_location = _locationManager.getLastKnownLocation（LocationManager.NETWORK_PROVIDER）;
如果（_location！= NULL）{
_latitude = _location.getLatitude（）;
_longitude = _location.getLongitude（）;
}
}
}
//如果GPS功能的获得纬度/长期使用GPS服务
如果（_isGPSEnabled）{
如果（_location == NULL）{
_locationManager.requestLocationUpdates（LocationManager.GPS_PROVIDER，MIN_TIME_BW_UPDATES，MIN_DISTANCE_CHANGE_FOR_UPDATES，这一点）;
Log.d（GPS已启用，GPS功能的）;
如果（_locationManager！= NULL）{
_location = _locationManager.getLastKnownLocation（LocationManager.GPS_PROVIDER）;
如果（_location！= NULL）{
_latitude = _location.getLatitude（）;
_longitude = _location.getLongitude（）;
}
}
}
}
}
}
赶上（例外五）{
// 没做什么
}
返回_location;
} 公共无效stopUsingGPS（）{ 如果（_locationManager！= NULL）{
_locationManager.removeUpdates（GPSTracker.this）;
}
} 公共双getLatitude（）{ 如果（_location！= NULL）{
_latitude = _location.getLatitude（）;
}
返回_latitude;
} 公共双getLongitude（）{ 如果（_location！= NULL）{
_longitude = _location.getLongitude（）;
}
返回_longitude;
} 公共布尔canGetLocation（）{ 返回this._canGetLocation;
} / **
*功能，以显示设置警告对话框在pressing设置按钮将劳克设置选项
* /
公共无效showSettingsAlert（字符串名称，弦乐味精）{ AlertDialog.Builder alertDialog =新AlertDialog.Builder（_context）;
alertDialog.setTitle（职称）;
alertDialog.setMessage（MSG）;
//设置按钮
alertDialog.setPositiveButton（参数应用，新DialogInterface.OnClickListener（）{
公共无效的onClick（DialogInterface对话，诠释它）{ 意向意图=新意图（Settings.ACTION_LOCATION_SOURCE_SETTINGS）;
_context.startActivity（意向）;
}
}）;
//取消按钮
alertDialog.setNegativeButton（更改或取消，新DialogInterface.OnClickListener（）{
公共无效的onClick（DialogInterface对话，诠释它）{ dialog.cancel（）;
}
}）;
// 显示
alertDialog.show（）;
} @覆盖
公共无效onLocationChanged（地点）{ } @覆盖
公共无效onProviderDisabled（字符串提供商）{ } @覆盖
公共无效onProviderEnabled（字符串提供商）{ } @覆盖
公共无效onStatusChanged（字符串提供商，INT地位，捆绑演员）{ } @覆盖
公众的IBinder onBind（意向为arg0）{ 返回null;
}
}
这是快如网络/ GPS /电话（感谢机器人），你只需要创建GPSTracker.java然后一个对象：
//创建一个实例单
GPSTracker跟踪= GPSTracker.getInstance（）;
//你可以使用这个如果测试如果位置更新OK
gpsTracker.canGetLocation（）
//用这种方法尽可能多的，只要你想更新的位置
tracker.getLocation（本）;
// retreive的位置，当你需要它
地点= EtablissementApplication._gpsTracker._location
：当您不想要使用GPS了，不要忘记在的onDestroy（）或
如果（跟踪！= NULL）{
tracker.stopUsingGPS（）;
}
i need to get my current coordinates. i try next, but it is does not get result.
public class FragmentNear extends SherlockFragment implements
android.location.LocationListener {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
locationManager = (LocationManager) getActivity().getSystemService(
Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, 0, 0, this);
v = inflater.inflate(R.layout.fragment_near, null);
DownloadWebPageTask dw = new DownloadWebPageTask();
dw.execute("");
return v;
}
@Override
public void onLocationChanged(Location loc) {
if (showMFD == 0) {
Log.d("myLogs", "-------- onLoChanged " + myLat + " " + myLong);
myLat = loc.getLatitude();
myLong = loc.getLongitude();
Log.d("myLogs", "-------- onLoChangedEnd " + myLat + " " + myLong);
}
}
public void showMFD() {
showMFD++;
//my Tasks
}
private class DownloadWebPageTask extends AsyncTask<String, Void, String> {
@Override
protected String doInBackground(String... urls) {
Log.d("myLogs", "Background");
while (myLat==0)
{
}
showMFD();
return "";
}
@Override
protected void onPreExecute()
{
super.onPreExecute();
pb = new ProgressDialog(getActivity());
pb.setMessage("Получение данных GPS...");
pb.setProgressStyle(ProgressDialog.STYLE_SPINNER);
pb.show();
}
@Override
protected void onPostExecute(String result) {
pb.dismiss();
}
}
My logic is in the picture
解决方案
An example of tracker class to use wifi or classic gps (3g, h+, gprs...)
public class GPSTracker extends Service implements android.location.LocationListener {
/**
* ATTRIBUTES
*/
private static final String TAG = GPSTracker.class.getSimpleName();
private Context _context;
private static GPSTracker _instance;
// The minimum distance to change Updates in meters
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 0; // meters
// The minimum time between updates in milliseconds
private static final long MIN_TIME_BW_UPDATES = 1000 * 30 * 1; // minute
// Declaring a Location Manager
protected LocationManager _locationManager;
/**
* PUBLIC ATTRIBUTES
*/
boolean _isGPSEnabled = false;
boolean _isNetworkEnabled = false;
boolean _canGetLocation = false;
public Location _location;
double _latitude;
double _longitude;
public GPSTracker() {
_context = null;
}
public static GPSTracker getInstance() {
if (_instance == null) {
_instance = new GPSTracker();
}
return _instance;
}
public void set_context(Context context) {
this._context = context;
}
public Location getLocation(Context context) {
_context = context;
try {
_locationManager = (LocationManager) _context.getSystemService(LOCATION_SERVICE);
_isGPSEnabled = _locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
_isNetworkEnabled = _locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!_isGPSEnabled && !_isNetworkEnabled) {
// no network provider is enabled
}
else {
this._canGetLocation = true;
if (_isNetworkEnabled) {
_locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("Network", "Network");
if (_locationManager != null) {
_location = _locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
if (_location != null) {
_latitude = _location.getLatitude();
_longitude = _location.getLongitude();
}
}
}
// if GPS Enabled get lat/long using GPS Services
if (_isGPSEnabled) {
if (_location == null) {
_locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, MIN_TIME_BW_UPDATES, MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("GPS Enabled", "GPS Enabled");
if (_locationManager != null) {
_location = _locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (_location != null) {
_latitude = _location.getLatitude();
_longitude = _location.getLongitude();
}
}
}
}
}
}
catch (Exception e) {
// do nothing
}
return _location;
}
public void stopUsingGPS() {
if (_locationManager != null) {
_locationManager.removeUpdates(GPSTracker.this);
}
}
public double getLatitude() {
if (_location != null) {
_latitude = _location.getLatitude();
}
return _latitude;
}
public double getLongitude() {
if (_location != null) {
_longitude = _location.getLongitude();
}
return _longitude;
}
public boolean canGetLocation() {
return this._canGetLocation;
}
/**
* Function to show settings alert dialog On pressing Settings button will lauch Settings Options
*/
public void showSettingsAlert(String title, String msg) {
AlertDialog.Builder alertDialog = new AlertDialog.Builder(_context);
alertDialog.setTitle(title);
alertDialog.setMessage(msg);
// Settings button
alertDialog.setPositiveButton("Paramètres", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
_context.startActivity(intent);
}
});
// cancel button
alertDialog.setNegativeButton("Annuler", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
// show
alertDialog.show();
}
@Override
public void onLocationChanged(Location location) {
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public IBinder onBind(Intent arg0) {
return null;
}
}
It is as fast as the network/gps/phone (thanks android) you just need to create GPSTracker.java then an object :
//create an instance singleton
GPSTracker tracker = GPSTracker.getInstance();
// you can use this in "if" to test if location is updated ok
gpsTracker.canGetLocation()
//update the location as much as you want with this method
tracker.getLocation(this);
//retreive the location when you need it
Location location = EtablissementApplication._gpsTracker._location
In onDestroy() or when you don't want to use the gps anymore don't forget :
if (tracker != null) {
tracker.stopUsingGPS();
}
这篇关于获取与AsyncTask的GPS坐标的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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