问题
如何使用位置工具获取Android中移动设备的当前纬度和经度？
#1 热门回答(286 赞)
使用LocationManager。
LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
Location location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
double longitude = location.getLongitude();
double latitude = location.getLatitude();
调用togetLastKnownLocation()不会阻止 - 这意味着它将返回null如果当前没有位置 - 所以你可能想看看将aLocationListener传递给requestLocationUpdates()methodinstead，这将为你提供你的位置的异步更新。
private final LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
longitude = location.getLongitude();
latitude = location.getLatitude();
}
}
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 2000, 10, locationListener);
如果你想使用GPS，则需要为你的应用程序提供ACCESS_FINE_LOCATION许可。
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
你可能还希望在GPS不可用时添加ACCESS_COARSE_LOCATION许可，并使用getBestProvider()方法选择你的位置提供商。
#2 热门回答(37 赞)
这是classLocationFinder找到GPS的位置。这个课程将致电MyLocation，它将开展业务。
LocationFinder
public class LocationFinder extends Activity {
int increment = 4;
MyLocation myLocation = new MyLocation();
// private ProgressDialog dialog;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.intermediat);
myLocation.getLocation(getApplicationContext(), locationResult);
boolean r = myLocation.getLocation(getApplicationContext(),
locationResult);
startActivity(new Intent(LocationFinder.this,
// Nearbyhotelfinder.class));
GPSMyListView.class));
finish();
}
public LocationResult locationResult = new LocationResult() {
@Override
public void gotLocation(Location location) {
// TODO Auto-generated method stub
double Longitude = location.getLongitude();
double Latitude = location.getLatitude();
Toast.makeText(getApplicationContext(), "Got Location",
Toast.LENGTH_LONG).show();
try {
SharedPreferences locationpref = getApplication()
.getSharedPreferences("location", MODE_WORLD_READABLE);
SharedPreferences.Editor prefsEditor = locationpref.edit();
prefsEditor.putString("Longitude", Longitude + "");
prefsEditor.putString("Latitude", Latitude + "");
prefsEditor.commit();
System.out.println("SHARE PREFERENCE ME PUT KAR DIYA.");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
// handler for the background updating
}
MyLocation
public class MyLocation {
Timer timer1;
LocationManager lm;
LocationResult locationResult;
boolean gps_enabled=false;
boolean network_enabled=false;
public boolean getLocation(Context context, LocationResult result)
{
//I use LocationResult callback class to pass location value from MyLocation to user code.
locationResult=result;
if(lm==null)
lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
//exceptions will be thrown if provider is not permitted.
try{gps_enabled=lm.isProviderEnabled(LocationManager.GPS_PROVIDER);}catch(Exception ex){}
try{network_enabled=lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);}catch(Exception ex){}
//Toast.makeText(context, gps_enabled+" "+network_enabled, Toast.LENGTH_LONG).show();
//don't start listeners if no provider is enabled
if(!gps_enabled && !network_enabled)
return false;
if(gps_enabled)
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListenerGps);
if(network_enabled)
lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNetwork);
timer1=new Timer();
timer1.schedule(new GetLastLocation(), 10000);
// Toast.makeText(context, " Yaha Tak AAya", Toast.LENGTH_LONG).show();
return true;
}
LocationListener locationListenerGps = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
lm.removeUpdates(this);
lm.removeUpdates(locationListenerNetwork);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
LocationListener locationListenerNetwork = new LocationListener() {
public void onLocationChanged(Location location) {
timer1.cancel();
locationResult.gotLocation(location);
lm.removeUpdates(this);
lm.removeUpdates(locationListenerGps);
}
public void onProviderDisabled(String provider) {}
public void onProviderEnabled(String provider) {}
public void onStatusChanged(String provider, int status, Bundle extras) {}
};
class GetLastLocation extends TimerTask {
@Override
public void run() {
//Context context = getClass().getgetApplicationContext();
Location net_loc=null, gps_loc=null;
if(gps_enabled)
gps_loc=lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if(network_enabled)
net_loc=lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
//if there are both values use the latest one
if(gps_loc!=null && net_loc!=null){
if(gps_loc.getTime()>net_loc.getTime())
locationResult.gotLocation(gps_loc);
else
locationResult.gotLocation(net_loc);
return;
}
if(gps_loc!=null){
locationResult.gotLocation(gps_loc);
return;
}
if(net_loc!=null){
locationResult.gotLocation(net_loc);
return;
}
locationResult.gotLocation(null);
}
}
public static abstract class LocationResult{
public abstract void gotLocation(Location location);
}
}
#3 热门回答(18 赞)
Withgooglethings经常变化：以前的答案中没有一个适合我。
2016年4月
基于this google training你是如何使用的
融合位置提供商
这需要设置Google Play服务
活动类别
public class GPSTrackerActivity extends AppCompatActivity implements
GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener {
private GoogleApiClient mGoogleApiClient;
Location mLastLocation;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (mGoogleApiClient == null) {
mGoogleApiClient = new GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
}
protected void onStart() {
mGoogleApiClient.connect();
super.onStart();
}
protected void onStop() {
mGoogleApiClient.disconnect();
super.onStop();
}
@Override
public void onConnected(Bundle bundle) {
try {
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(
mGoogleApiClient);
if (mLastLocation != null) {
Intent intent = new Intent();
intent.putExtra("Longitude", mLastLocation.getLongitude());
intent.putExtra("Latitude", mLastLocation.getLatitude());
setResult(1,intent);
finish();
}
} catch (SecurityException e) {
}
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
}
用法
在你的活动中
Intent intent = new Intent(context, GPSTrackerActivity.class);
startActivityForResult(intent,1);
而这种方法
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode == 1){
Bundle extras = data.getExtras();
Double longitude = extras.getDouble("Longitude");
Double latitude = extras.getDouble("Latitude");
}
}