MapView没有';t在Android mvvm数据绑定中显示谷歌地图[已解决]
我正在尝试使用带有数据绑定的mapView设置google地图,并在地图上设置一些标记。当我硬编码“latlngs”时,我的地图工作正常,但当我尝试设置从服务器获取的“latlngs”时,地图不会显示。标记已显示,数据和设置标记没有问题,只有地图不起作用。谷歌的标志就在那里,以防你们怀疑我的API密钥是否有效。这是我的密码 这是碎片MapView没有';t在Android mvvm数据绑定中显示谷歌地图[已解决],android,mvvm,google-maps-android-api-2,android-mapview,android-databinding,Android,Mvvm,Google Maps Android Api 2,Android Mapview,Android Databinding,我正在尝试使用带有数据绑定的mapView设置google地图,并在地图上设置一些标记。当我硬编码“latlngs”时,我的地图工作正常,但当我尝试设置从服务器获取的“latlngs”时,地图不会显示。标记已显示,数据和设置标记没有问题,只有地图不起作用。谷歌的标志就在那里,以防你们怀疑我的API密钥是否有效。这是我的密码 这是碎片 private MapView google_map; @Override public void onCreate(Bundle savedInstanceSt
private MapView google_map;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(@NotNull LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
FragmentMapBinding binding = DataBindingUtil.inflate(inflater, R.layout.fragment_map, container, false);
MapFragmentViewModel viewModel = new ViewModelProvider(this, new MapFragmentViewModelFactory()).get(MapFragmentViewModel.class);
binding.setLifecycleOwner(this);
binding.setViewModel(viewModel);
google_map = binding.googleMap;
viewModel.getLocations();
viewModel.locationsResponse().observe(getViewLifecycleOwner(), apiResponseObject -> {
switch (apiResponseObject.status) {
case SUCCESS:
ViewUtils.hideProgressDialog();
break;
case LOADING:
ViewUtils.showProgressDialog(requireContext());
break;
case ERROR:
ViewUtils.hideProgressDialog();
ViewUtils.showToastMessage(requireContext(), apiResponseObject.error);
}
});
setTypeFace(binding.getRoot(), requireContext());
languageSetup(requireContext());
return binding.getRoot();
}
@Override
public void onResume() {
super.onResume();
google_map.onResume();
}
@Override
public void onPause() {
super.onPause();
google_map.onPause();
}
@Override
public void onDestroy() {
super.onDestroy();
google_map.onDestroy();
}
@Override
public void onLowMemory() {
super.onLowMemory();
google_map.onLowMemory();
}
@Override
public void onStop() {
super.onStop();
google_map.onStop();
}
这是我的viewModel:
private MutableLiveData<ApiResponseObject> responseLiveData = new MutableLiveData<>();
private CompositeDisposable disposables;
private ApiCallsRepository apiCallsRepository;
public MapFragmentViewModel() {
apiCallsRepository = new ApiCallsRepository();
disposables = new CompositeDisposable();
}
void getLocations() {
disposables.add(apiCallsRepository.getLocations(SharedPrefUtils.getUserId())
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.doOnSubscribe(disposable -> responseLiveData.setValue(ApiResponseObject.loading()))
.subscribe(this::setLocations, this::handleError));
}
LiveData<ApiResponseObject> locationsResponse() {
return responseLiveData;
}
public MutableLiveData<List<LatLng>> locations = new MutableLiveData<>();
@BindingAdapter("initMap")
public static void initMap(final MapView mapView, final List<LatLng> locations) {
if (mapView != null) {
mapView.onCreate(new Bundle());
mapView.getMapAsync(googleMap -> {
if (locations != null) {
for (LatLng latLng : locations)
googleMap.addMarker(new MarkerOptions().position(latLng));
}
});
}
}
public void setLocations(List<LocationsResponse> mLocationsResponses) {
List<LatLng> latLngs = new ArrayList<>();
for (LocationsResponse locationsResponse : mLocationsResponses)
latLngs.add(new LatLng(Double.parseDouble(locationsResponse.getLongitude()),
Double.parseDouble(locationsResponse.getLatitude())));
locations.setValue(latLngs);
responseLiveData.setValue(ApiResponseObject.success(null));
}
private void handleError(Throwable throwable) {
if (throwable instanceof HttpException) {
HttpException httpException = (HttpException) throwable;
Response<?> response = httpException.response();
responseLiveData.setValue(ApiResponseObject.error(getErrorMessage(response)));
} else if (throwable instanceof IOException) {
responseLiveData.setValue(ApiResponseObject.error(UNEXPECTED_ERROR));
} else {
responseLiveData.setValue(ApiResponseObject.error(throwable.getMessage()));
}
}
我找到了解决方案
问题是在响应调用时再次设置了“位置”mutableLiveData,这会再次调用getMapAsync,我需要在该方法中添加mapView.onResume
@BindingAdapter("initMap")
public static void initMap(final MapView mapView, final List<LatLng> locations) {
if (mapView != null) {
mapView.onCreate(new Bundle());
mapView.getMapAsync(googleMap -> {
if (locations != null) {
mapView.onResume();
for (LatLng latLng : locations)
googleMap.addMarker(new MarkerOptions().position(latLng));
}
});
}
}
@BindingAdapter(“initMap”)
公共静态void initMap(最终地图视图地图视图,最终列表位置){
如果(地图视图!=null){
onCreate(newbundle());
getMapAsync(谷歌地图->{
如果(位置!=null){
onResume();
用于(板条板条:位置)
addMarker(新的MarkerOptions().position(latLng));
}
});
}
}
您需要在片段中加载贴图,而不是在ViewModel中。将此代码移动到片段的onViewCreated
mapView.getMapAsync(googleMap -> {
if (locations != null) {
for (LatLng latLng : locations)
googleMap.addMarker(new MarkerOptions().position(latLng));
}
});
您需要在片段中加载贴图,而不是在ViewModel中。将此代码移动到片段的onViewCreated
mapView.getMapAsync(googleMap -> {
if (locations != null) {
for (LatLng latLng : locations)
googleMap.addMarker(new MarkerOptions().position(latLng));
}
});
Tnx的答复。这不是我加载地图的问题,我已经找到了解决方案。我编辑了答案,所以如果你感兴趣,请检查一下。@VladaMomirovic Good。但我认为getMapAsync回调应该是getLocations调用的起点,这对于回答来说更清楚。这不是我加载地图的问题,我已经找到了解决方案。我编辑了答案,所以如果你感兴趣,请检查一下。@VladaMomirovic Good。但我认为getMapAsync回调应该是getLocations调用的起点,这是一种更清晰的方法
mapView.getMapAsync(googleMap -> {
if (locations != null) {
for (LatLng latLng : locations)
googleMap.addMarker(new MarkerOptions().position(latLng));
}
});