133 lines
5.1 KiB
Java
133 lines
5.1 KiB
Java
package com.a1.nextlocation.fragments;
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import android.Manifest;
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import android.content.Context;
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import android.content.pm.PackageManager;
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import android.location.Location;
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import android.location.LocationManager;
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import android.os.Bundle;
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import android.util.Log;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.core.app.ActivityCompat;
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import androidx.core.content.ContextCompat;
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import androidx.fragment.app.Fragment;
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import com.a1.nextlocation.R;
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import org.osmdroid.api.IMapController;
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import org.osmdroid.config.Configuration;
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import org.osmdroid.util.GeoPoint;
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import org.osmdroid.views.MapView;
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import org.osmdroid.views.overlay.compass.CompassOverlay;
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import org.osmdroid.views.overlay.compass.InternalCompassOrientationProvider;
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import org.osmdroid.views.overlay.mylocation.GpsMyLocationProvider;
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import org.osmdroid.views.overlay.mylocation.MyLocationNewOverlay;
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import java.util.ArrayList;
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public class HomeFragment extends Fragment {
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private final String userAgent = "com.ai.nextlocation.fragments";
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private MapView mapView;
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private final int REQUEST_PERMISSIONS_REQUEST_CODE = 1;
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private final String TAG = HomeFragment.class.getCanonicalName();
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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requestPermissionsIfNecessary(
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// if you need to show the current location request FINE_LOCATION permission
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Manifest.permission.ACCESS_FINE_LOCATION,
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// WRITE_EXTERNAL_STORAGE is required in order to show the map
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Manifest.permission.WRITE_EXTERNAL_STORAGE);
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}
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@Override
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public View onCreateView(LayoutInflater inflater, ViewGroup container,
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Bundle savedInstanceState) {
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// Inflate the layout for this fragment
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return inflater.inflate(R.layout.fragment_home, container, false);
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}
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@Override
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public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
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super.onViewCreated(view, savedInstanceState);
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initMap(view);
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}
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private void initMap(@NonNull View view) {
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// set the user agent
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Configuration.getInstance().setUserAgentValue(userAgent);
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// create the map view
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mapView = view.findViewById(R.id.mapView);
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mapView.setDestroyMode(false);
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mapView.setTag("mapView");
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mapView.setMultiTouchControls(true);
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// get the location provider
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GpsMyLocationProvider gpsMyLocationProvider = new GpsMyLocationProvider(this.requireContext());
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// add the compass overlay
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CompassOverlay compassOverlay = new CompassOverlay(requireContext(),new InternalCompassOrientationProvider(requireContext()),mapView);
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compassOverlay.enableCompass();
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mapView.getOverlays().add(compassOverlay);
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// add the location overlay
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MyLocationNewOverlay mLocationOverlay = new MyLocationNewOverlay(gpsMyLocationProvider, mapView);
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mLocationOverlay.enableFollowLocation();
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mLocationOverlay.enableMyLocation();
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mapView.getOverlays().add(mLocationOverlay);
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// add the zoom controller
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IMapController mapController = mapView.getController();
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mapController.setZoom(15.0);
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// add location manager and set the start point
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LocationManager locationManager = (LocationManager) requireActivity().getSystemService(Context.LOCATION_SERVICE);
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try {
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Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
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GeoPoint startPoint = new GeoPoint(location.getLatitude(), location.getLongitude());
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mapController.setCenter(startPoint);
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} catch (SecurityException e) {
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Log.d(TAG, "onViewCreated: exception while getting location: " + e.getLocalizedMessage());
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requestPermissionsIfNecessary(
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// if you need to show the current location request FINE_LOCATION permission
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Manifest.permission.ACCESS_FINE_LOCATION,
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// WRITE_EXTERNAL_STORAGE is required in order to show the map
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Manifest.permission.WRITE_EXTERNAL_STORAGE);
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}
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}
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private void requestPermissionsIfNecessary(String... permissions) {
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ArrayList<String> permissionsToRequest = new ArrayList<>();
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if (this.getContext() != null)
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for (String permission : permissions) {
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if (ContextCompat.checkSelfPermission(this.getContext(), permission)
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!= PackageManager.PERMISSION_GRANTED) {
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// Permission is not granted
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permissionsToRequest.add(permission);
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}
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}
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if (permissionsToRequest.size() > 0 && this.getActivity() != null) {
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ActivityCompat.requestPermissions(
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this.getActivity(),
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permissionsToRequest.toArray(new String[0]),
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REQUEST_PERMISSIONS_REQUEST_CODE);
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}
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}
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} |