英文:
Android Google Map circle clickable
问题
我正在制作一个应用程序，用于在地图上跟踪冠状病毒，通过在受影响的国家周围绘制一个圆圈来实现。我已经绘制了这些圆圈，但我想要的是，当我点击任何一个圆圈时，它会显示一些数据。因此，我想要使圆圈可点击，当我点击任何一个圆圈时，它会在文本框中显示有关该国家的一些详细信息。以下是地图活动的代码：
private GoogleMap mMap;
SearchView searchView;
private static final String TAG = MapsActivity.class.getSimpleName();
@SuppressLint("ClickableViewAccessibility")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
searchView = findViewById(R.id.search_location);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String s) {
String location = searchView.getQuery().toString();
List<Address> addressList = null;
if (location != null || !location.equals("")) {
Geocoder geocoder = new Geocoder(MapsActivity.this);
try {
addressList = geocoder.getFromLocationName(location, 1);
} catch (IOException e) {
e.printStackTrace();
}
Address address = addressList.get(0);
LatLng latLng = new LatLng(address.getLatitude(), address.getLongitude());
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(latLng, 6));
}
return false;
}
@Override
public boolean onQueryTextChange(String s) {
return false;
}
});
}
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
// 设置缩放控制栏以进行放大和缩小
mMap.getUiSettings().setZoomControlsEnabled(true);
mMap.getUiSettings().setMyLocationButtonEnabled(true);
mMap.getUiSettings().setMapToolbarEnabled(true);
try {
// 使用在原始资源文件中定义的JSON对象来自定义基本地图的样式。
boolean success = googleMap.setMapStyle(
MapStyleOptions.loadRawResourceStyle(
this, R.raw.style_json));
if (!success) {
Log.e(TAG, "Style parsing failed.");
}
} catch (Resources.NotFoundException e) {
Log.e(TAG, "Can't find style. Error: ", e);
}
fetchData();
}
private void fetchData() {
String url = "https://corona.lmao.ninja/v2/countries/";
StringRequest request = new StringRequest(Request.Method.GET, url, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
JSONArray jsonArray = new JSONArray(response);
for (int i = 0; i < jsonArray.length(); i++) {
Double radius;
JSONObject jsonObject = jsonArray.getJSONObject(i);
Double population = jsonObject.getDouble("population");
Double cases = jsonObject.getDouble("cases");
JSONObject object = jsonObject.getJSONObject("countryInfo");
Double lat = object.getDouble("lat");
Double lng = object.getDouble("long");
Double zoomLevel = Double.valueOf(mMap.getCameraPosition().zoom);
radius = ((cases / population) * 100) * 500000;
if (radius <= 80000) {
radius = 150000d;
} else if (radius > 80000 && radius < 600000) {
radius = 300000d;
} else radius = 600000d;
CircleOptions circleOptions = new CircleOptions().strokeWidth(3f).center(new LatLng(lat, lng)).radius(radius * (zoomLevel / 9))
.strokeColor(Color.RED).fillColor(Color.argb(70, 150, 50, 50));;
Circle circle = mMap.addCircle(circleOptions);
// 在这里添加点击事件监听器来处理点击圆圈时的操作
circle.setTag(jsonObject.toString());
mMap.setOnCircleClickListener(new GoogleMap.OnCircleClickListener() {
@Override
public void onCircleClick(Circle circle) {
String countryData = circle.getTag().toString();
// 在这里处理显示国家详细信息的操作，例如在文本框中显示
}
});
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(MapsActivity.this, error.getMessage(), Toast.LENGTH_SHORT).show();
}
});
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(request);
}
请注意，在上述代码中，我已经添加了点击事件监听器，以便在点击圆圈时处理显示国家详细信息的操作。您可以在相应的回调函数中添加代码来显示详细信息，例如在文本框中显示。
英文:
I am making an application to track corona virus on map by drawing a circle on the map around the affected countries.
I did that circles but what i want is when i click on any circle it shows some data.
So i want to make a circle clickable so when i click on any circle it shows some detail about that country in a text box.
This is the map Activity code:
private GoogleMap mMap;
SearchView searchView;
private static final String TAG = MapsActivity.class.getSimpleName();
@SuppressLint("ClickableViewAccessibility")
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_maps);
searchView = findViewById(R.id.search_location);
// Obtain the SupportMapFragment and get notified when the map is ready to be used.
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
.findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String s) {
String location = searchView.getQuery().toString();
List<Address> addressList = null;
if (location != null || !location.equals("")){
Geocoder geocoder = new Geocoder(MapsActivity.this);
try {
addressList = geocoder.getFromLocationName(location, 1);
} catch (IOException e) {
e.printStackTrace();
}
Address address = addressList.get(0);
LatLng latLng = new LatLng(address.getLatitude(), address.getLongitude());
mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(latLng, 6));
}
return false;
}
@Override
public boolean onQueryTextChange(String s) {
return false;
}
});
}
@Override
public void onMapReady(GoogleMap googleMap) {
mMap = googleMap;
//set zoom control bar to zoom in and zoom out
mMap.getUiSettings().setZoomControlsEnabled(true);
mMap.getUiSettings().setMyLocationButtonEnabled(true);
mMap.getUiSettings().setMapToolbarEnabled(true);
try{
// Customise the styling of the base map using a JSON object defined
// in a raw resource file.
boolean success = googleMap.setMapStyle(
MapStyleOptions.loadRawResourceStyle(
this, R.raw.style_json));
if (!success) {
Log.e(TAG, "Style parsing failed.");
}
} catch (Resources.NotFoundException e) {
Log.e(TAG, "Can't find style. Error: ", e);
}
fetchData();
}
private void fetchData() {
String url = "https://corona.lmao.ninja/v2/countries/";
StringRequest request = new StringRequest(Request.Method.GET, url, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
JSONArray jsonArray = new JSONArray(response);
for (int i = 0; i < jsonArray.length(); i++) {
Double radius;
JSONObject jsonObject = jsonArray.getJSONObject(i);
//String countryName = jsonObject.getString("country");
Double population = jsonObject.getDouble("population");
Double cases = jsonObject.getDouble("cases");
JSONObject object = jsonObject.getJSONObject("countryInfo");
Double lat = object.getDouble("lat");
Double lng = object.getDouble("long");
Double zoomLevel = Double.valueOf(mMap.getCameraPosition().zoom);
radius = ((cases / population )* 100) * 500000;
if (radius <= 80000) {
radius = 150000d;
}
else if (radius > 80000 && radius < 600000){
radius = 300000d;
}
else radius = 600000d;
CircleOptions circleOptions= new CircleOptions().strokeWidth(3f).center(new LatLng(lat, lng)).radius(radius*(zoomLevel/9))
.strokeColor(Color.RED).fillColor(Color.argb(70, 150, 50, 50));;
Circle circle = mMap.addCircle(circleOptions);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(MapsActivity.this, error.getMessage(), Toast.LENGTH_SHORT).show();
}
});
RequestQueue requestQueue = Volley.newRequestQueue(this);
requestQueue.add(request);
}
}
答案1
得分: 0
可以为地图定义一个监听器：
mMap.setOnCircleClickListener(...)
并使圆形可点击：
circleOptions.clickable(true)
英文:
You can define a listener for the map
mMap.setOnCircleClickListener(...)
And make circles clickable
circleOptions.clickable(true)
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