我正在使用 map 和位置监听器。本地图准备好时，我会调用位置监听器，并在从位置监听器获取位置后在 map 上显示标记，所有这些都在 setMap() 方法中。
当我获取位置时，我在 snackbar 上看到一些数字，我不知道它来自哪里，也没有在任何地方显示它。我正在展示 snackbar 以显示互联网和 GPS 警报。但这是无中生有的。
看起来像这样:
这是什么？
代码:
public class SearchMerchantFragment extends Fragment implements GetSearchedMerchantsAsyncTask.GetSearchedMerchantsCallBack, OnMapReadyCallback, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
LocationListener[] mLocationListeners = new LocationListener[]{
new LocationListener(LocationManager.NETWORK_PROVIDER),
new LocationListener(LocationManager.GPS_PROVIDER)
};
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_search_merchant, container, false);
setUpUI(view);
return view;
}
public void setUpUI(View view) {
setUpMapIfNeeded();
sessionData = new SessionData(getActivity());
sessionUserId = sessionData.getString("user_id", "-1");
access_token = sessionData.getString("api_key", "-1");
mLocationsList = new ArrayList<>();
markers = new ArrayList<>();
edtSearch = (EditText) view.findViewById(R.id.edtSearch);
parentLayout = (RelativeLayout) view.findViewById(R.id.parentLayout);
rv_fetch_merchants = (RecyclerView) view.findViewById(R.id.rv_fetch_merchants);
merchantsList = new ArrayList<Merchants>();
merchantsAdapter = new SearchedMerchantsAdapter(this.getContext(), merchantsList);
rv_fetch_merchants.setLayoutManager(new LinearLayoutManager(getActivity()));
rv_fetch_merchants.setAdapter(merchantsAdapter);
rv_fetch_merchants.setHasFixedSize(true);
rv_fetch_merchants.setItemViewCacheSize(30);
rv_fetch_merchants.setDrawingCacheEnabled(true);
rv_fetch_merchants.setDrawingCacheQuality(View.DRAWING_CACHE_QUALITY_HIGH);
}
//get searched merchants
public void accessMerchants() {
new GetSearchedMerchantsAsyncTask(getActivity(), SearchMerchantFragment.this).execute(access_token, sessionUserId, String.valueOf(mLastLocation.getLatitude()), String.valueOf(mLastLocation.getLongitude()));
}
@Override
public void doPostExecute(ArrayList<Merchants> merchantsArrayList) {
merchantsList.clear();
merchantsList.addAll(merchantsArrayList);
merchantsAdapter.notifyDataSetChanged();
for (Merchants merchants : merchantsList) {
LatLng latLng = new LatLng(merchants.getLatitude(), merchants.getLongitude());
MarkerOptions marker = new MarkerOptions().position(latLng).icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED)).title(merchants.getKirana_name());
Marker m = mGoogleMap.addMarker(marker);
markers.add(m);
}
}
public void showAlert(String alert) {
Snackbar snackbar = Snackbar.make(parentLayout, alert, Snackbar.LENGTH_LONG);
snackbar.show(); // Don’t forget to show!
}
private void setUpMapIfNeeded() {
if (mGoogleMap == null) {
mapFragment = (SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map_fragment);
mapFragment.getMapAsync(this);
}
}
//setup map
@Override
public void onMapReady(GoogleMap googleMap) {
mGoogleMap = googleMap;
buildGoogleApiClient();
mGoogleApiClient.connect();
mapConnected = true;
if (mapConnected) {
if (CommonUtils.isConnectedToInternet(getActivity())) {
if(ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
initializeLocationManager();
requestLocation();
}
else {
((HomeActivity) getActivity()).showAlert(getResources().getString(R.string.locationAlert));
}
} else {
((HomeActivity) getActivity()).showAlert(getResources().getString(R.string.check_network));
}
}
}
protected synchronized void buildGoogleApiClient() {
// Toast.makeText(getActivity(),"buildGoogleApiClient",Toast.LENGTH_SHORT).show();
mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build();
}
@Override
public void onConnected(Bundle bundle) {
// Toast.makeText(getActivity(),"onConnected",Toast.LENGTH_SHORT).show();
}
@Override
public void onConnectionSuspended(int i) {
// Toast.makeText(getActivity(),"onConnectionSuspended",Toast.LENGTH_SHORT).show();
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
// Toast.makeText(getActivity(),"onConnectionFailed",Toast.LENGTH_SHORT).show();
}
@Override
public void onDetach() {
super.onDetach();
mapConnected = false;
mGoogleMap = null;
View view = getActivity().getCurrentFocus();
if (view != null) {
InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
}
public void setMap() {
try {
mLatLang = new LatLng(mLastLocation.getLatitude(), mLastLocation.getLongitude());
accessMerchants();
MarkerOptions markerOptions = new MarkerOptions();
markerOptions.position(mLatLang);
markerOptions.title(getResources().getString(R.string.position));
markerOptions.icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_AZURE));
mMarker = mGoogleMap.addMarker(markerOptions);
CameraPosition cameraPosition = new CameraPosition.Builder().target(mLatLang).zoom(14).build();
mGoogleMap.animateCamera(CameraUpdateFactory.newCameraPosition(cameraPosition));
mGoogleMap.setMyLocationEnabled(true);
mGoogleMap.getUiSettings().setZoomControlsEnabled(true);
mGoogleMap.getUiSettings().setAllGesturesEnabled(true);
mLocationManager.removeUpdates(mLocationListeners[0]);
mLocationManager.removeUpdates(mLocationListeners[1]);
} catch (SecurityException e) {
}
}
private void initializeLocationManager() {
if (mLocationManager == null) {
mLocationManager = (LocationManager) getActivity().getSystemService(Context.LOCATION_SERVICE);
}
boolean gps_enabled = false;
boolean network_enabled = false;
try {
gps_enabled = mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
} catch (Exception ex) {
}
try {
network_enabled = mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
} catch (Exception ex) {
}
if (!gps_enabled && !network_enabled) {
// notify user
((HomeActivity) getActivity()).showAlert(getResources().getString(R.string.locationAlert));
}
}
public class LocationListener implements android.location.LocationListener {
public LocationListener() {
}
public LocationListener(String provider) {
Log.e(Application.TAG, "LocationListener " + provider);
mLastLocation = new Location(provider);
}
@Override
public void onLocationChanged(Location location) {
Log.e(Application.TAG, "onLocationChanged: " + location);
mLastLocation.set(location);
if(mapConnected)
setMap();
}
@Override
public void onProviderDisabled(String provider) {
Log.e(Application.TAG, "onProviderDisabled: " + provider);
}
@Override
public void onProviderEnabled(String provider) {
Log.e(Application.TAG, "onProviderEnabled: " + provider);
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
Log.e(Application.TAG, "onStatusChanged: " + provider);
}
}
public void requestLocation() {
try {
mLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, 0, 0,
mLocationListeners[0]);
} catch (java.lang.SecurityException ex) {
Log.i(Application.TAG, "fail to request location update, ignore", ex);
} catch (IllegalArgumentException ex) {
Log.d(Application.TAG, "network provider does not exist, " + ex.getMessage());
}
try {
mLocationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, 0, 0,
mLocationListeners[1]);
} catch (java.lang.SecurityException ex) {
Log.i(Application.TAG, "fail to request location update, ignore", ex);
} catch (IllegalArgumentException ex) {
Log.d(Application.TAG, "gps provider does not exist " + ex.getMessage());
}
}
}
当我进行调试时，我发现当调用 setMap() 方法时，在调用该方法之前或之后，我在 onLocationChanged 方法中得到了这个。
这是哪个号码？请帮忙谢谢..
最佳答案
将其替换为您的代码:
getString(R.string.locationAlert);
有了这个。
getResources().getString(R.string.locationAlert);
问题是 getString(R.string.locationAlert); 此代码返回 R 文件整数分配的空间。
关于java - 当我从位置监听器获取位置时，在 snackbar 上显示一些数字，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/41692368/