我有一个包含190个标记的Android项目，我需要一种可以获得最接近标记的方法，但我不知道该怎么做，而且我正在寻找任何帮助，例如示例或关于那个的文档
GoogleMap map;
String email;
LocationManager locationManager;
private static final int PERMS_REQUEST_CODE = 123;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
//obtener datos para la barra
if (user != null) {
String nombre = user.getDisplayName();
email = user.getEmail();
Uri foto = user.getPhotoUrl();
NavigationView navigationsView = (NavigationView) findViewById(R.id.nav_view);
View hView = navigationsView.getHeaderView(0);
TextView nav_user = (TextView) hView.findViewById(R.id.txtMail);
TextView name = (TextView) hView.findViewById(R.id.txtNombre);
ImageView img_user = (ImageView) hView.findViewById(R.id.profile_image);
name.setText(nombre);
nav_user.setText(email);
Picasso.with(this).load(foto).into(img_user);
} else {
SharedPreferences loginbdd = getSharedPreferences("login", Context.MODE_PRIVATE);
email = loginbdd.getString("nombre", "");
String nombre = loginbdd.getString("mail", "");
NavigationView navigationsView = (NavigationView) findViewById(R.id.nav_view);
View hView = navigationsView.getHeaderView(0);
TextView nav_user = (TextView) hView.findViewById(R.id.txtMail);
TextView name = (TextView) hView.findViewById(R.id.txtNombre);
ImageView img_user = (ImageView) hView.findViewById(R.id.profile_image);
nav_user.setText(email);
name.setText(nombre);
isLocationEnabled();
if(!isLocationEnabled()) {
AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setTitle("Encienda su GPS")
.setMessage("Su GPS se encuentra desactivado, le gustaria activarlo?")
.setCancelable(false)
.setPositiveButton("Encencer GPS",
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
startActivity(new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS));
}
});
AlertDialog alert = builder.create();
alert.show();
}
}
}
private boolean hasPermissions() {
int res = 0;
//string array of permissions,
String[] permissions = new String[]{Manifest.permission.ACCESS_FINE_LOCATION};
for (String perms : permissions) {
res = checkCallingOrSelfPermission(perms);
if (!(res == PackageManager.PERMISSION_GRANTED)) {
return false;
}
}
return true;
}
private void requestPerms() {
String[] permissions = new String[]{Manifest.permission.ACCESS_FINE_LOCATION};
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
requestPermissions(permissions, PERMS_REQUEST_CODE);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
boolean allowed = true;
switch (requestCode) {
case PERMS_REQUEST_CODE:
for (int res : grantResults) {
// if user granted all permissions.
allowed = allowed && (res == PackageManager.PERMISSION_GRANTED);
onMapReady(map);
}
break;
default:
// if user not granted permissions.
allowed = false;
break;
}
if (allowed) {
onMapReady(map);
} else {
// we will give warning to user that they haven't granted permissions.
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (shouldShowRequestPermissionRationale(Manifest.permission.ACCESS_FINE_LOCATION)) {
Toast.makeText(this, "Permisos de Ubicación Denegados.", Toast.LENGTH_SHORT).show();
}
}
}
}
private void goLogin() {
Intent intent = new Intent(this, Login.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
new AlertDialog.Builder(MainActivity.this)
.setIcon(R.drawable.cerrar).setTitle("Cerrar Aplicación").setMessage("Deseas cerrar CicloMapp?")
.setCancelable(true).setPositiveButton("Si", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
System.exit(0);
}
})
.setNegativeButton("No", null).show();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
} else if (id == R.id.endSession) {
new AlertDialog.Builder(MainActivity.this)
.setIcon(R.drawable.cerrar)
.setTitle("Cerrar sessión")
.setMessage("Deseas cerrar sesión?")
.setCancelable(true)
.setPositiveButton("Si", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();
if (user != null) {
LoginManager.getInstance().logOut();
FirebaseAuth.getInstance().signOut();
goLogin();
} else {
SharedPreferences loginbdd = getSharedPreferences("login", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = loginbdd.edit();
editor.remove("inicio");
editor.commit();
goLogin();
}
}
})
.setNegativeButton("No", null).show();
}
return super.onOptionsItemSelected(item);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.AgregarRuta) {
// Intent i = new Intent(MainActivity.this, agregarRuta.class);
// i.putExtra("correo", email);
// startActivity(i);
} else if (id == R.id.ValorarRuta) {
Intent i = new Intent(MainActivity.this, Valoraraciones.class);
i.putExtra("correo", email);
startActivity(i);
} else if (id == R.id.ReportarRuta) {
Intent i = new Intent(MainActivity.this, Reportar.class);
i.putExtra("correos", email);
startActivity(i);
} else if (id == R.id.Eventos) {
} else if (id == R.id.tiendas) {
Intent i = new Intent(MainActivity.this, Tiendas.class);
startActivity(i);
} else if (id == R.id.Leyes) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
@Override
public void onMapReady(final GoogleMap googleMap) {
if (hasPermissions()) {
map = googleMap;
map.setMapType(GoogleMap.MAP_TYPE_NORMAL);
map.getUiSettings().setMapToolbarEnabled(false);
map.getUiSettings().setMyLocationButtonEnabled(true);
map.setMyLocationEnabled(true);
map.getUiSettings().setZoomControlsEnabled(true);
CameraUpdate center = CameraUpdateFactory.newLatLng(new LatLng(-33.447487,-70.673676));
CameraUpdate zoom = CameraUpdateFactory.zoomTo(11);
map.moveCamera(center);
map.animateCamera(zoom);
//carga clase polylines y el metodo de agregar las polyline
Polyline po = new Polyline();
po.AddPolyline(map);
//ejecutar snackbar al hacer click
map.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
@Override
public boolean onMarkerClick(Marker marker) {
View v1 = (RelativeLayout)findViewById(R.id.content_main);
Snackbar.make(v1,"Nombre de la ciclovía: "+marker.getTitle()+ System.getProperty ("line.separator")+"Caracteristicas de la vía: "+marker.getSnippet(),12000).show();
return false;
}
});
//establecer tamaño del icono y mostrar marcadores
int height = 50;
int width = 50;
BitmapDrawable bitmapdraw = (BitmapDrawable) getResources().getDrawable(R.drawable.mruta);
Bitmap b = bitmapdraw.getBitmap();
Bitmap smallMarker = Bitmap.createScaledBitmap(b, width, height, false);
Marcadores ma=new Marcadores();
ma.MarcadoreBdd(map,smallMarker);
}
else {
requestPerms();
}
}
protected boolean isLocationEnabled(){
String le = Context.LOCATION_SERVICE;
locationManager = (LocationManager) getSystemService(le);
if(!locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)){
return false;
} else {
return true;
}
}
}