我不确定问题的标题是否正确，但这是我的问题。 我有一个注册和登录的应用程序。用户根据他们的登录功能有不同的功能。所有用户登录后都会被引导到MapsActivity.java。我在那里区分用户并相应地设置显示。
我想要的是如果用户以xyz@gmail.com登录，其他用户将能够看到该用户的位置。它正在工作，但在一部手机上。当我以xyz@gmail.com身份登录时，该位置存储在共享首选项中，并且当我以同一手机上的其他用户身份登录时也会检索该位置。
但是当我从另一部手机登录为xyz@gmail.com并从另一部手机（2部手机 - 2个用户）以其他用户身份登录时，手机之间没有连接。 xyz@gmail.com位置无法在另一部手机上看到。
那么我做错了什么？如何同时在2部手机上运行相同的应用程序？
希望你理解我的问题。下面是我的MapsActivity.java，以进一步澄清我的问题。
谢谢。
public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
private GoogleMap mMap;
private LocationManager locationManager;
private LocationListener locationListener;
private Marker mLocationMarker;
public FirebaseUser user;
public Circle circle;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
user = FirebaseAuth.getInstance().getCurrentUser();
if(!user.getEmail().equalsIgnoreCase("xyz@gmail.com"))
{
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
if (locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, new android.location.LocationListener() {
@Override
public void onLocationChanged(Location location) {
double latitude = location.getLatitude();
double longitude = location.getLongitude();
LatLng latLng = new LatLng(latitude, longitude);
if(mLocationMarker != null)
{
mLocationMarker.remove();
}
if(circle != null)
{
circle.remove();
}
circle = mMap.addCircle(new CircleOptions().center(latLng).radius(15).strokeColor(Color.BLUE).fillColor(Color.BLUE));
SharedPreferences sp = getSharedPreferences("MapsActivity.java", MODE_PRIVATE);
Double la = Double.longBitsToDouble(sp.getLong("la", Double.doubleToLongBits(-1)));
Double lo = Double.longBitsToDouble(sp.getLong("lo", Double.doubleToLongBits(-1)));
mLocationMarker = mMap.addMarker(new MarkerOptions().position(new LatLng(la, lo)));
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(latLng, 14), 1500, null);
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
});
}
else if(locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)){
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, new android.location.LocationListener() {
@Override
public void onLocationChanged(Location location) {
double latitude = location.getLatitude();
double longitude = location.getLongitude();
LatLng latLng = new LatLng(latitude, longitude);
if(mLocationMarker != null)
{
mLocationMarker.remove();
}
if(circle != null)
{
circle.remove();
}
circle = mMap.addCircle(new CircleOptions().center(latLng).radius(15).strokeColor(Color.BLUE).fillColor(Color.BLUE));
SharedPreferences sp = getSharedPreferences("MapsActivity.java", MODE_PRIVATE);
Double la = Double.longBitsToDouble(sp.getLong("la", Double.doubleToLongBits(-1)));
Double lo = Double.longBitsToDouble(sp.getLong("lo", Double.doubleToLongBits(-1)));
mLocationMarker = mMap.addMarker(new MarkerOptions().position(new LatLng(la, lo)));
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(latLng, 14), 1500, null);
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
});
}
}
else
{
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
if (locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)) {
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, new android.location.LocationListener() {
@Override
public void onLocationChanged(Location location) {
double lat = location.getLatitude();
double lon = location.getLongitude();
LatLng lolo = new LatLng(lat, lon);
if(mLocationMarker != null)
{
mLocationMarker.remove();
}
mLocationMarker = mMap.addMarker(new MarkerOptions().position(lolo));
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(lolo, 14), 1500, null);
SharedPreferences sp = getSharedPreferences("MapsActivity.java", MODE_PRIVATE);
SharedPreferences.Editor edit = sp.edit();
edit.putLong("la", Double.doubleToLongBits(lat));
edit.putLong("lo", Double.doubleToLongBits(lon));
edit.apply();
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
});
}
else if(locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)){
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, new android.location.LocationListener() {
@Override
public void onLocationChanged(Location location) {
double lat = location.getLatitude();
double lon = location.getLongitude();
LatLng lolo = new LatLng(lat, lon);
if(mLocationMarker != null)
{
mLocationMarker.remove();
}
mLocationMarker = mMap.addMarker(new MarkerOptions().position(lolo));
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(lolo, 14), 1500, null);
SharedPreferences sp = getSharedPreferences("MapsActivity.java", MODE_PRIVATE);
SharedPreferences.Editor edit = sp.edit();
edit.putLong("la", Double.doubleToLongBits(lat));
edit.putLong("lo", Double.doubleToLongBits(lon));
edit.apply();
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
});
}
}
}
/**
* Manipulates the map once available.
* This callback is triggered when the map is ready to be used.
* This is where we can add markers or lines, add listeners or move the camera. In this case,
* we just add a marker near Sydney, Australia.
* If Google Play services is not installed on the device, the user will be prompted to install
* it inside the SupportMapFragment. This method will only be triggered once the user has
* installed Google Play services and returned to the app.
*/
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
}
}