【发布时间】：2020-04-22 14:26:50
【问题描述】：
我已经完成了具有多个位置的谷歌地图标记，并且我添加了一些带有医院名称、经度和纬度等字段的医院位置，我从 firebase 检索并加载到具有医院名称的可搜索微调器。当我单击医院名称时，它标记为该特定位置，但在我的代码中，所有位置都被标记，但是当我单击它时，它会转到该标记并返回当前位置，当我单击医院时可以做什么来显示该位置可搜索微调器中的名称任何人请帮助我
提前致谢
This is my java code
public class MapsActivity extends AppCompatActivity implements OnMapReadyCallback, IFirebaseLoaddone, NavigationView.OnNavigationItemSelectedListener {
private GoogleMap mMap;
double longitude, latitude;
private SearchableSpinner searchableSpinner;
DatabaseReference hospitalRef;
IFirebaseLoaddone iFirebaseLoaddone;
List<Hospital> hospitals;
private DrawerLayout drawer;
private HashMap<String, Marker> mMarkers = new HashMap<>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
searchableSpinner = findViewById(R.id.searchviewid);
BubbleSeekBar bubbleSeekBar = findViewById(R.id.seekbar);
final TextView textView = findViewById(R.id.textview);
drawer = findViewById(R.id.drawer_layout);
NavigationView navigationView = findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
//init Db
hospitalRef = FirebaseDatabase.getInstance().getReference("hospital");
//init interface
iFirebaseLoaddone = this;
hospitalRef.addListenerForSingleValueEvent(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
List<Hospital> hospital = new ArrayList<>();
for (DataSnapshot hospitalsnapshot : dataSnapshot.getChildren()) {
hospital.add(hospitalsnapshot.getValue(Hospital.class));
}
iFirebaseLoaddone.onFirebaseLoadSuccess(hospital);
}
@Override
public void onCancelled(DatabaseError databaseError) {
iFirebaseLoaddone.onFirebaseLoadFailed(databaseError.getMessage());
}
});
searchableSpinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
hospitalRef.addChildEventListener(new ChildEventListener() {
@Override
public void onChildAdded(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {
setMarker(dataSnapshot);
}
@Override
public void onChildChanged(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {
setMarker(dataSnapshot);
}
@Override
public void onChildRemoved(@NonNull DataSnapshot dataSnapshot) {
}
@Override
public void onChildMoved(@NonNull DataSnapshot dataSnapshot, @Nullable String s) {
}
@Override
public void onCancelled(@NonNull DatabaseError databaseError) {
}
});
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
bubbleSeekBar.setOnProgressChangedListener(new BubbleSeekBar.OnProgressChangedListener() {
@Override
public void onProgressChanged(int progress, float progressFloat) {
//textView.setText( String.format( "on change %d",progress ) );
}
@Override
public void getProgressOnActionUp(int progress, float progressFloat) {
}
@Override
public void getProgressOnFinally(int progress, float progressFloat) {
}
});
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
latitude = getIntent().getDoubleExtra("latitude", 0);
longitude = getIntent().getDoubleExtra("longtitude", 0);
findViewById(R.id.zoomin).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mMap.animateCamera(CameraUpdateFactory.zoomIn());
}
});
findViewById(R.id.zoomout).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mMap.animateCamera(CameraUpdateFactory.zoomOut());
}
});
}
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager
.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
return;
}
mMap.setMyLocationEnabled(true);
mMap.setOnMyLocationChangeListener(new GoogleMap.OnMyLocationChangeListener() {
@Override
public void onMyLocationChange(Location location) {
CameraUpdate center = CameraUpdateFactory.newLatLng(new LatLng(location.getLatitude(), location.getLongitude()));
CameraUpdate Zoom = CameraUpdateFactory.zoomTo(16);
mMap.clear();
MarkerOptions mp = new MarkerOptions();
mp.position(new LatLng(location.getLatitude(), location.getLongitude()));
mp.title("Source");
mMap.addMarker(mp);
mMap.moveCamera(center);
mMap.animateCamera(Zoom);
}
});
}
@Override
public void onFirebaseLoadSuccess(List<Hospital> hospitalList) {
hospitals = hospitalList;
//get all data
List<String> name_list = new ArrayList<>();
List<Double> latitude = new ArrayList<>();
List<Double> longitude = new ArrayList<>();
for (Hospital hospital : hospitalList)
name_list.add(hospital.getName());
ArrayAdapter<String> adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, name_list);
searchableSpinner.setAdapter(adapter);
}
@Override
public void onFirebaseLoadFailed(String message) {
}
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
switch (item.getItemId()) {
case R.id.nav_home:
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new HomeFragment()).commit();
break;
case R.id.nav_location:
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new LocationFragment()).commit();
break;
case R.id.nav_setting:
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
new SettingFragment()).commit();
break;
case R.id.nav_logout:
logout();
break;
}
drawer.closeDrawer(GravityCompat.START);
return true;
}
private void logout()
{
FirebaseAuth.getInstance().signOut();
Intent intent= new Intent(getApplicationContext(),LoginActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
}
@Override
public void onBackPressed() {
if(drawer.isDrawerOpen(GravityCompat.START)){
drawer.closeDrawer(GravityCompat.START);
}else {
super.onBackPressed();
}
}
private void setMarker(DataSnapshot dataSnapshot){
String key = dataSnapshot.getKey();
HashMap<String, Object> value = (HashMap<String, Object>) dataSnapshot.getValue();
double latitude = Double.parseDouble(value.get("latitude").toString());
double longitude = Double.parseDouble(value.get("longitude").toString());
LatLng location = new LatLng(latitude,longitude);
if(!mMarkers.containsKey(key)) {
mMarkers.put(key, mMap.addMarker(new MarkerOptions().title(key).position(location)));
}
else
{
mMarkers.get(key).setPosition(location);
}
LatLngBounds.Builder builder = new LatLngBounds.Builder();
for(Marker marker : mMarkers.values()){
builder.include(marker.getPosition());
}
mMap.animateCamera(CameraUpdateFactory.newLatLngBounds(builder.build(),100));
}
}
【问题讨论】：
标签： google-maps android-studio firebase-realtime-database google-maps-markers google-maps-android-api-2