从OnLocationChange侦听器获取太多延迟。？ [英] Getting too much delay from OnLocationChange listener.?
问题描述
我目前正在基于Geolocation开发一个Android项目。我已经集成了 FUSE库。但最初的纬度，经度值变为零。从 OnLocationChange侦听器中获取太多延迟。任何人都可以提出一个适当的解决方案来获取正确的GEO位置值提前致谢。
public class GPSTracker extends Service implements LocationListener {
private final Context mContext ;
boolean isGPSEnabled = false; // GPS状态标志
boolean isNetworkEnabled = false; //网络状态标志
boolean canGetLocation = false; // GPS状态标志
位置位置; //位置
双纬度; //纬度
双经度; // longitude
//改变的最小距离以米为单位的更新
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10米
//以毫秒为单位的最小更新时间间隔
private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1分钟
//声明位置管理器
受保护的LocationManager locationManager;
公共GPSTracker（上下文环境）{
this.mContext = context;
getLocation（）;
if（locationManager.isProviderEnabled（LocationManager.GPS_PROVIDER））{
//如果启用，您需要做什么...
getLocation（）;
} else {
//如果未启用，请执行以下操作...
AlertDialog.Builder alertDialog = new AlertDialog.Builder（mContext）;
alertDialog.setTitle（GPS is settings）; //设置对话框标题
//设置对话框消息
alertDialog.setMessage（GPS未启用，是否要进入设置菜单？）;
//按设置按钮
alertDialog.setPositiveButton（Settings，新的DialogInterface.OnClickListener（）{
public void onClick（DialogInterface对话框，int which）{
Intent intent = new Intent（Settings.ACTION_LOCATION_SOURCE_SETTINGS）;
mContext.startActivity（intent）;
}
}）;
//按下取消按钮
alertDialog.setNegativeButton（取消，新的DialogInterface.OnClickListener（）{
public void onClick（DialogInterface对话框，int其中）{
dialog.cancel（）;
}
}）;
alertDialog.show（）; //显示提示消息
public Location getLocation（）{
try {
locationManager =（LocationManager）mContext
。 getSystemService（LOCATION_SERVICE）;
//获取GPS状态
isGPSEnabled = locationManager
.isProviderEnabled（LocationManager.GPS_PROVIDER）;
//获取网络状态
isNetworkEnabled = locationManager
.isProviderEnabled（LocationManager.NETWORK_PROVIDER）;
if（！isGPSEnabled&&！isNetworkEnabled）{
System.out.println（GPS Disabled）;
//未启用网络提供商
}其他{
this.canGetLocation = true;
if（isNetworkEnabled）{
locationManager.requestLocationUpdates（
LocationManager.NETWORK_PROVIDER，
MIN_TIME_BW_UPDATES，
MIN_DISTANCE_CHANGE_FOR_UPDATES，this）;
Log.d（网络，网络）;
if（locationManager！= null）{
location = locationManager
.getLastKnownLocation（LocationManager.NETWORK_PROVIDER）;
if（location！= null）{
latitude = location.getLatitude（）;
longitude = location.getLongitude（）;
$ b //如果GPS启用使用GPS服务获得经纬度
if（isGPSEnabled）{
if（location == null ）{
locationManager.requestLocationUpdates（
LocationManager.GPS_PROVIDER，
MIN_TIME_BW_UPDATES，
MIN_DISTANCE_CHANGE_FOR_UPDATES，this）;
Log.d（已启用GPS，已启用GPS）;
if（locationManager！= null）{
location = locationManager
.getLastKnownLocation（LocationManager.GPS_PROVIDER）;
if（location！= null）{
latitude = location.getLatitude（）;
longitude = location.getLongitude（）;
} catch（Exception e）{
e.printStackTrace（）;
}
返回地点;
$ b $ **
*停止使用GPS监听器
*调用此函数将停止在您的应用中使用GPS
* * /
public void stopUsingGPS（）{
if（locationManager！= null）{
locationManager.removeUpdates（GPSTracker.this）;
$ b $ ** b $ b *函数获得纬度
* * /
public double getLatitude（）{
if（location！= null）{
latitude = location.getLatitude（）;
}
//返回纬度
返回纬度;
$ b / **
*获得经度的函数
* * /
public double getLongitude（）{
if（location！ = null）{
longitude = location.getLongitude（）;
}
//返回经度
返回经度;
}
$ b $ **
*检查GPS / wifi的功能
* @return boolean
* * /
public boolean canGetLocation （）{
return this.canGetLocation;
}
/ **
*显示设置提示对话框的功能
*按下设置按钮后，将显示设置选项
* * /
public void onLocationChanged（Location location）{
if（location！= null）{
latitude = location.getLatitude（）;
$ b $ public void onProviderDisabled（String provider）{} $ b $ public void onProviderEnabled（String provider）{} $ b $ public void onStatusChanged（String provider ，int status，Bundle extras）{}
@Override
public IBinder onBind（Intent arg0）{return null;}
public void getLocationname（）{}
}
I am currently working on a android project based on Geolocation. I have integrated FUSE library. But initially the latitude, longitude value getting zero. And getting too much delay from OnLocationChange listener. Can anyone suggest a proper solution for getting correct GEO location values. Thanks in advance.
public class GPSTracker extends Service implements LocationListener {
private final Context mContext;
boolean isGPSEnabled = false; // flag for GPS status
boolean isNetworkEnabled = false; // flag for network status
boolean canGetLocation = false; // flag for GPS status
Location location; // location
double latitude; // latitude
double longitude; // longitude
// The minimum distance to change Updates in meters
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters
// The minimum time between updates in milliseconds
private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; // 1 minute
// Declaring a Location Manager
protected LocationManager locationManager;
public GPSTracker(Context context) {
this.mContext = context;
getLocation();
if (locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)){
//Do what you need if enabled...
getLocation();
} else {
//Do what you need if not enabled...
AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext);
alertDialog.setTitle("GPS is settings"); // Setting Dialog Title
// Setting Dialog Message
alertDialog.setMessage("GPS is not enabled. Do you want to go to settings menu?");
// On pressing Settings button
alertDialog.setPositiveButton("Settings", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,int which) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
mContext.startActivity(intent);
}
});
// on pressing cancel button
alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
alertDialog.show(); // Showing Alert Message
}
}
public Location getLocation() {
try {
locationManager = (LocationManager) mContext
.getSystemService(LOCATION_SERVICE);
// getting GPS status
isGPSEnabled = locationManager
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// getting network status
isNetworkEnabled = locationManager
.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if (!isGPSEnabled && !isNetworkEnabled) {
System.out.println("GPS Disabled");
// 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) {
e.printStackTrace();
}
return location;
}
/**
* Stop using GPS listener
* Calling this function will stop using GPS in your app
* */
public void stopUsingGPS(){
if(locationManager != null){
locationManager.removeUpdates(GPSTracker.this);
}
}
/**
* Function to get latitude
* */
public double getLatitude(){
if(location != null){
latitude = location.getLatitude();
}
// return latitude
return latitude;
}
/**
* Function to get longitude
* */
public double getLongitude(){
if(location != null){
longitude = location.getLongitude();
}
// return longitude
return longitude;
}
/**
* Function to check GPS/wifi enabled
* @return boolean
* */
public boolean canGetLocation() {
return this.canGetLocation;
}
/**
* Function to show settings alert dialog
* On pressing Settings button will lauch Settings Options
* */
public void onLocationChanged(Location location) {
if(location != null){
latitude = location.getLatitude();
}
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
@Override
public IBinder onBind(Intent arg0) {return null;}
public void getLocationname() {}
}
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