如何使用customAdapter将Fragment中的listView中的数据传递到第二个Fragment中的googleMaps的地图中，以将其传递给addMarker（）函数？
这是我的课程很重要：
FragmentOne（listView）：
public class FragmentOne extends Fragment {
private static ArrayList<MapModel> mMapList;
private static MapCustomAdapterSearch mAdapter;
private static ListView mListView;
private MapDBHelper mMapDBHelper;
private GetMapsAsyncTaskInternet mGetMapsAsyncTaskInternet;
private static ProgressDialog mProgressDialogInternet;
private static FragmentOne mFragmentOne;
private View mView;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
mView = inflater.inflate(R.layout.fragment_one_layout, container, false);
mListView = mView.findViewById(R.id.list);
mFragmentOne = this;
mMapDBHelper = new MapDBHelper(getActivity());
mMapList = mMapDBHelper.getAllMaps();
mAdapter = new MapCustomAdapterSearch(getActivity(), mMapList);
setHasOptionsMenu(true);
registerForContextMenu(mListView);
mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent intentSearchToAddInternet = new Intent(getActivity().getBaseContext(), FragmentTwo.class);
intentSearchToAddInternet.putExtra(getString(R.string.movie_edit), mMapList.get(position));
getActivity().startActivity(intentSearchToAddInternet);
}
});
return mView;
}
// Set movies in FragmentOne
public static void setMaps(ArrayList<MapModel> list) {
mMapList = list;
mAdapter.clear();
mAdapter.addAll(list);
mListView.setAdapter(mAdapter);
}
// Sets off the menu of activity_menu
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.activity_menu, menu);
// SearchView of FragmentOne
final MenuItem menuItem = menu.findItem(R.id.action_search);
SearchManager searchManager = (SearchManager) getActivity().getSystemService(Context.SEARCH_SERVICE);
// Change colors of the searchView upper panel
menuItem.setOnActionExpandListener(new MenuItem.OnActionExpandListener() {
@Override
public boolean onMenuItemActionExpand(MenuItem item) {
// Set styles for expanded state here
if (((AppCompatActivity) getActivity()).getSupportActionBar() != null) {
((AppCompatActivity) getActivity()).getSupportActionBar().setBackgroundDrawable(new ColorDrawable(Color.DKGRAY));
}
return true;
}
@Override
public boolean onMenuItemActionCollapse(MenuItem item) {
// Set styles for collapsed state here
if (((AppCompatActivity) getActivity()).getSupportActionBar() != null) {
((AppCompatActivity) getActivity()).getSupportActionBar().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
}
return true;
}
});
// Continued of SearchView of FragmentOne
final android.support.v7.widget.SearchView searchView = (android.support.v7.widget.SearchView) menuItem.getActionView();
if (searchView != null) {
searchView.setSearchableInfo(searchManager.getSearchableInfo((getActivity()).getComponentName()));
searchView.setQueryHint(Html.fromHtml("<font color = #FFEA54>" + getResources().getString(R.string.hint) + "</font>"));
searchView.setSubmitButtonEnabled(true);
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String query) {
// Search movies from that URL and put them in the SQLiteHelper
String urlQuery = "https://maps.googleapis.com/maps/api/place/search/json?location=31.73072,34.99293&radius=1000000&rankby=prominence&types=food|restaurant&keyword="
+ query +
"&key=API_KEY";
mGetMapsAsyncTaskInternet = new GetMapsAsyncTaskInternet();
mGetMapsAsyncTaskInternet.execute(urlQuery);
return true;
}
@Override
public boolean onQueryTextChange(String newText) {
return true;
}
});
}
}
// Sets off the menu of list_menu
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
getActivity().getMenuInflater().inflate(R.menu.list_menu, menu);
}
// Options in the activity_menu
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_search:
break;
}
return super.onOptionsItemSelected(item);
}
// Options in the list_menu
@Override
public boolean onContextItemSelected(MenuItem item) {
AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
int listPosition = info.position;
switch (item.getItemId()) {
case R.id.addMap: // Edit the movies on MainActivity
Intent intent = new Intent(getActivity(), AddMapMe.class);
intent.putExtra(getString(R.string.map_add_from_internet), mMapList.get(listPosition));
startActivity(intent);
break;
}
return super.onContextItemSelected(item);
}
// stopShowingProgressBar
public static void stopShowingProgressBar() {
if (mProgressDialogInternet != null) {
mProgressDialogInternet.dismiss();
mProgressDialogInternet = null;
}
}
// startShowingProgressBar
public static void startShowingProgressBar() {
mProgressDialogInternet = ProgressDialog.show(mFragmentOne.getActivity(), "Loading...",
"Please wait...", true);
mProgressDialogInternet.show();
}
FragmentTwo（地图）：
public class FragmentTwo extends Fragment implements OnMapReadyCallback {
private GoogleMap mGoogleMap;
private MapView mMapView;
private View mView;
private MapModel mapModel;
TextView textView;
TextView textView1;
final MapModel item = (MapModel) getActivity().getIntent().getExtras().getSerializable(getString(R.string.movie_edit));
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
mView = inflater.inflate(R.layout.fragment_two_layout, container, false);
return mView;
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mMapView = view.findViewById(R.id.map);
if (mMapView != null) {
mMapView.onCreate(null);
mMapView.onResume();
mMapView.getMapAsync(this);
}
}
@Override
public void onMapReady(GoogleMap googleMap) {
MapsInitializer.initialize(getContext());
mGoogleMap = googleMap;
addMarker();
googleMap.setMapType(GoogleMap.MAP_TYPE_TERRAIN);
if (ActivityCompat.checkSelfPermission(getContext(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getContext(), 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;
}
googleMap.setMyLocationEnabled(true);
}
public void addMarker() {
textView.setText(String.valueOf(item.getLat()));
textView1.setText(String.valueOf(item.getLng()));
String lat = textView.getText().toString();
String lng = textView1.getText().toString();
double lat1 = Double.parseDouble(lat);
double lng1 = Double.parseDouble(lng);
MarkerOptions marker = new MarkerOptions().position(new LatLng(lat1, lng1)).title("Elior home");
mGoogleMap.addMarker(marker);
mGoogleMap.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() {
@Override
public boolean onMarkerClick(Marker marker) {
return true;
}
});
}
MapModel：
public class MapModel implements Serializable {
private float lat;
private float lng;
private String vicinity;
private String name;
private String id;
private String icon;
private Geometry geometry;
public MapModel(String name, String vicinity, float lat, float lng, String icon) {
this.vicinity = vicinity;
this.name = name;
this.lat = lat;
this.lng = lng;
this.icon = icon;
}
public float getLng() {
return geometry.getLocation().getLng();
}
public void setLng(float lng) {
this.geometry.getLocation().setLng(lng);
}
public String getIcon() {
return icon;
}
public void setIcon(String icon) {
this.icon = icon;
}
public float getLat() {
return geometry.getLocation().getLat();
}
public void setLat(float lat) {
this.geometry.getLocation().setLat(lat);
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getVicinity() {
return vicinity;
}
public void setVicinity(String formatted_address) {
this.vicinity = formatted_address;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
MapCustomAdapterSearch：
public class MapCustomAdapterSearch extends ArrayAdapter<MapModel> {
private Context mContext; //Context
private ArrayList<MapModel> mMovieList; // ArrayList of MovieModel
private FusedLocationProviderClient mFusedLocationClient;
private MapModel mapModel;
MapCustomAdapterSearch(Context context_, ArrayList<MapModel> movie_) {
super(context_, 0, movie_);
mContext = context_;
mMovieList = movie_;
}
@NonNull
@Override
public View getView(int position, @NonNull View convertView, @NonNull ViewGroup parent) {
View listItem = convertView;
if (listItem == null) {
listItem = LayoutInflater.from(mContext).inflate(R.layout.movie_item_row, parent, false);
}
MapModel currentMap = getItem(position); // Position of items
// Put the image in image1
if (currentMap != null) { // If the position of the items not null
ImageView image1 = listItem.findViewById(R.id.image1);
assert currentMap != null; // If the position of the item not null in the ImageView
Picasso.get().load(currentMap.getIcon()).into(image1);
// Put the text in name1
TextView name1 = listItem.findViewById(R.id.name1);
name1.setText(String.valueOf(currentMap.getName()));
// Put the text in address1
TextView address1 = listItem.findViewById(R.id.address1);
address1.setText(String.valueOf(currentMap.getVicinity()));
// Put the text in lat1
TextView lat1 = listItem.findViewById(R.id.lat1);
lat1.setText("\n" + "\n" + "Latitude: " + currentMap.getLat());
// Put the text in la2
TextView lng1 = listItem.findViewById(R.id.lng1);
lng1.setText("\n" + "Longitude: " + currentMap.getLng());
}
return listItem;
}
private void getLocation() {
if (ActivityCompat.checkSelfPermission(mContext, Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(mContext, 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;
}
mFusedLocationClient.getLastLocation().addOnSuccessListener((Executor) this, new OnSuccessListener<android.location.Location>() {
@Override
public void onSuccess(final android.location.Location location) {
// Got last known location. In some rare situations this can be null.
if (location != null) {
final android.location.Location locationA = new android.location.Location("point A");
final double latA = mapModel.getLat();
final double lngA = mapModel.getLng();
locationA.setLatitude(latA);
locationA.setLongitude(lngA);
final android.location.Location locationB = new Location("point B");
final double latB = location.getLatitude();
final double lngB = location.getLongitude();
locationB.setLatitude(latB);
locationB.setLongitude(lngB);
float distance = locationA.distanceTo(locationB);
}
}
});
}