在这里,GPS需要半个小时或更长的时间来获取当前位置坐标。
我如何在同一上下文中同时使用GPS_SATELLITES和GPS_NETWORK_PROVIDERS,并获取最近GPS的值?
public class ImageFile extends Activity{
LocationListener listner;
Location location;
LocationManager locationManager ;
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; // 10 meters
private static final long MIN_TIME_BW_UPDATES = 1000 * 10 * 1; // 1 minute
@Override
protected void onCreate(final Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.branchreport_layout);
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
listner = new MyLocationListner();
isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
if(isGPSEnabled==false&&isNetworkEnabled==false)
{
showSettingsAlert();
}
if (isGPSEnabled)
{
progress = ProgressDialog.show(this, "GPS",
"Fetching latitude and longitude...", true);
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
MIN_TIME_BW_UPDATES,MIN_DISTANCE_CHANGE_FOR_UPDATES,listner);
}
else if (isNetworkEnabled)
{
progress = ProgressDialog.show(this, "GPS",
"Fetching latitude and longitude...", true);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,MIN_TIME_BW_UPDATES,MIN_DISTANCE_CHANGE_FOR_UPDATES,listner);
}
public class MyLocationListner implements LocationListener {
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
@Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
x = location.getLatitude();
y = location.getLongitude();
if((x!=0) && (y!=0))
{
progress.dismiss();
locationManager.removeUpdates(listner);
Geocoder gCoder = new Geocoder(ImageFile.this);
try {
addresses = gCoder.getFromLocation(x, y, 1);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
if (addresses != null && addresses.size() > 0) {
Log.d("TestTag", "Locality: " + addresses.get(0).getLocality()+"getAddressLine"+addresses.get(0).getAddressLine(0)+",getAdminArea"+addresses.get(0).getAdminArea()+",getSubLocality"+addresses.get(0).getSubLocality());
}
}
}
@Override
public void onProviderDisabled(String arg0) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String arg0) {
// TODO Auto-generated method stub
}
@Override
public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
// TODO Auto-generated method stub
}
}
public void showSettingsAlert(){
AlertDialog.Builder alertDialog = new AlertDialog.Builder(this);
// Setting Dialog Title
alertDialog.setTitle("GPS is settings");
// 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);
startActivity(intent);
}
});
// on pressing cancel button
alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
alertDialog.show();
}
}