我有以下课程来获取用户位置。
public class GetUserLocation extends Activity {
Timer timer1;
LocationManager locationManager = null;
LocationResult locationResult;
boolean gpsEnabled = false;
boolean networkEnabled = false;
public static Location userLocation = null;
public String checkProviders(Context context) {
if (locationManager == null) {
locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
}
try {
gpsEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
} catch (Exception ex) {
ex.printStackTrace();
gpsEnabled = false;
}
try {
networkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
} catch (Exception ex) {
ex.printStackTrace();
networkEnabled = false;
}
if(!gpsEnabled && !networkEnabled)
return "No Location Service Found.\nPlease turn on your location service by\nenabling GPS or Data Service or WI-FI";
if(gpsEnabled && !networkEnabled)
return "No Internet Service Found.\nPlease turn on your inernet service by\nenabling Data Service or WI-FI";
return null;
}
public boolean getLocation(Context context, LocationResult result) {
locationResult = result;
if (locationManager == null) {
locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
}
// exceptions will be thrown if provider is not permitted.
try {
gpsEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
} catch (Exception ex) {
}
try {
networkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
} catch (Exception ex) {
ex.printStackTrace();
}
// don't start listeners if no provider is enabled
if (!gpsEnabled && !networkEnabled)
return false;
if (gpsEnabled) {
locationManager.removeUpdates(locationListenerGps);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0,locationListenerGps);
}
if (networkEnabled) {
locationManager.removeUpdates(locationListenerNetwork);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0,locationListenerNetwork);
}
timer1 = new Timer();
//timer1.schedule(new GetLastLocation(), 30000);
return true;
}
LocationListener locationListenerGps = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
locationManager.removeUpdates(this);
locationManager.removeUpdates(locationListenerNetwork);
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
};
LocationListener locationListenerNetwork = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
locationManager.removeUpdates(this);
locationManager.removeUpdates(locationListenerGps);
}
@Override
public void onProviderDisabled(String provider) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
};
// class GetLastLocation extends TimerTask {
// @Override
// public void run() {
//
// locationManager.removeUpdates(locationListenerGps);
// locationManager.removeUpdates(locationListenerNetwork);
//
// Location networkLocation = null, gpsLocation = null;
// if (gpsEnabled) {
// //t = Calendar.getInstance().getTimeInMillis();
// gpsLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
// }
//
// if (networkEnabled) {
// networkLocation = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
// }
//
// // if there are both values use the latest one
// if (gpsLocation != null && networkLocation != null) {
//
// if (gpsLocation.getTime() > networkLocation.getTime())
// locationResult.gotLocation(gpsLocation);
// else
// locationResult.gotLocation(networkLocation);
//
// return;
// }
//
// if (gpsLocation != null) {
// locationResult.gotLocation(gpsLocation);
// return;
// }
//
// if (networkLocation != null) {
// locationResult.gotLocation(networkLocation);
// return;
// }
//
// locationResult.gotLocation(null);
// }
// }
public static abstract class LocationResult {
public abstract void gotLocation(Location location);
}
public void removeUpdates() {
if(timer1!=null) {
timer1.cancel();
}
locationManager.removeUpdates(locationListenerGps);
locationManager.removeUpdates(locationListenerNetwork);
userLocation = null;
locationResult.gotLocation(null);
}
public Timer getTimer() {
return this.timer1;
}
}
此代码适用于其他设备,但不适用于 Galaxy s3。但在测试 S3 设备中,谷歌地图正在修复用户位置。
谁能说为什么会这样?任何提示将不胜感激。