如何获得GPS定位的android

问题描述

我想有一个恒定的GPS监听器，将发送其位置（长和纬度坐标）发送到Web服务器每隔x分钟。在一个按钮，单击它也将发送其位置到Web服务器。我认识到，得到的GPS信号，你键入多久找到一个位置，但我怎么写一个程序，可以得到GPS的位置，并发送其坐标每x分钟（甚至在后台的时候不是通过一个按钮preSS？

//在上点击

  LocationManager LM =（LocationManager）getSystemService（Context.LOCATION_SERVICE）;
locationManager.requestLocationUpdates（
        LocationManager.GPS_PROVIDER，whatshouldIputhere？0，这一点）;
 

和

 公共无效onLocationChanged（位置定位）{
    如果（位置！= NULL）{
        双纬度= location.getLatitude（）;
        双LNG = location.getLongitude（）;
    }
}
 

解决方案

我有这个工作：

 私人无效_getLocation（）{
    //获取位置管理器
    LocationManager locationManager =（LocationManager）
            getSystemService（LOCATION_SERVICE）;
    标准标准=新标准（）;
    字符串bestProvider = locationManager.getBestProvider（标准，FALSE）;
    位置位置= locationManager.getLastKnownLocation（bestProvider）;
    尝试 {
        纬度= location.getLatitude（）;
        LON = location.getLongitude（）;
    }赶上（NullPointerException异常E）{
        土地增值税= -1.0;
        LON = -1.0;
    }
}
 

这很简单。它得到的最好的供应商，并获得其最后已知位置。
如果你只用GPS想要的话，尝试这。

希望它可以帮助！

编辑：

试试这个：

 私人无效_getLocation（）{
    //获取位置管理器
    LocationManager locationManager =（LocationManager）
            getSystemService（LOCATION_SERVICE）;
    标准标准=新标准（）;
    字符串bestProvider = locationManager.getBestProvider（标准，FALSE）;
    位置位置= locationManager.getLastKnownLocation（bestProvider）;
    LocationListener的loc_listener =新LocationListener的（）{

        公共无效onLocationChanged（位置L）{}

        公共无效onProviderEnabled（串P）{}

        公共无效onProviderDisabled（串P）{}

        公共无效onStatusChanged（串P，INT地位，捆绑演员）{}
    };
    locationManager
            .requestLocationUpdates（bestProvider，0，0，loc_listener）;
    位置= locationManager.getLastKnownLocation（bestProvider）;
    尝试 {
        纬度= location.getLatitude（）;
        LON = location.getLongitude（）;
    }赶上（NullPointerException异常E）{
        土地增值税= -1.0;
        LON = -1.0;
    }
}
 

这code得到最后已知位置，然后做实际位置的请求。

I am trying to have a constant gps listener that will send its location (long and lat coordinates) to a web server every x mins. On a button click it will also send its location to the webserver. I realize that to get the gps signal you type in how often to find a position, but how do I write a program that can get the gps location and send its coordinates every x mins (even in the background when not and by a button press?

//in the on click

LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(
        LocationManager.GPS_PROVIDER, whatshouldIputhere?, 0, this);

and

public void onLocationChanged(Location location) {
    if (location != null) {
        double lat = location.getLatitude();
        double lng = location.getLongitude();
    }
}

解决方案

I've got this working:

private void _getLocation() {
    // Get the location manager
    LocationManager locationManager = (LocationManager)
            getSystemService(LOCATION_SERVICE);
    Criteria criteria = new Criteria();
    String bestProvider = locationManager.getBestProvider(criteria, false);
    Location location = locationManager.getLastKnownLocation(bestProvider);
    try {
        lat = location.getLatitude();
        lon = location.getLongitude();
    } catch (NullPointerException e) {
        lat = -1.0;
        lon = -1.0;
    }
}

It's simple. It gets the best available provider and gets its last known position.
If you want it only with the GPS, try this.

Hope it helps!

EDITED:

try this:

private void _getLocation() {
    // Get the location manager
    LocationManager locationManager = (LocationManager)
            getSystemService(LOCATION_SERVICE);
    Criteria criteria = new Criteria();
    String bestProvider = locationManager.getBestProvider(criteria, false);
    Location location = locationManager.getLastKnownLocation(bestProvider);
    LocationListener loc_listener = new LocationListener() {

        public void onLocationChanged(Location l) {}

        public void onProviderEnabled(String p) {}

        public void onProviderDisabled(String p) {}

        public void onStatusChanged(String p, int status, Bundle extras) {}
    };
    locationManager
            .requestLocationUpdates(bestProvider, 0, 0, loc_listener);
    location = locationManager.getLastKnownLocation(bestProvider);
    try {
        lat = location.getLatitude();
        lon = location.getLongitude();
    } catch (NullPointerException e) {
        lat = -1.0;
        lon = -1.0;
    }
}

This code gets the last known location and then do a request for the actual location.

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