D57.1783999404.diff
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	diff --git a/AndroidManifest.xml b/AndroidManifest.xml
	--- a/AndroidManifest.xml
	+++ b/AndroidManifest.xml
	@@ -22,7 +22,7 @@
	android:label="@string/app_name"
	android:theme="@style/AppTheme.NoActionBar">
	<activity
	- android:name=".ActivityMain"
	+ android:name=".ActivityPrincipal"
	android:label="@string/app_name"
	android:screenOrientation="portrait"
	android:windowSoftInputMode="adjustResize">
	@@ -68,7 +68,7 @@
	<activity
	android:name=".ActivityAbout"
	android:label="@string/about"
	- android:parentActivityName=".ActivityMain"
	+ android:parentActivityName=".ActivityPrincipal"
	android:theme="@style/AboutTheme">

	<!-- API < 16: -->
	@@ -99,8 +99,10 @@
	android:value=".ActivityMain"/>
	</activity>

	- <activity android:name=".ActivityPrincipal"
	- android:label="Principal" >
	+ <activity
	+ android:name=".ActivityMain"
	+ android:screenOrientation="portrait"
	+ android:label="@string/app_name" >
	</activity>

	<provider
	@@ -122,11 +124,11 @@
	<activity
	android:name=".ActivitySettings"
	android:label="@string/title_activity_settings"
	- android:parentActivityName=".ActivityMain"
	+ android:parentActivityName=".ActivityPrincipal"
	android:theme="@style/AppTheme">
	<meta-data
	android:name="android.support.PARENT_ACTIVITY"
	- android:value="it.reyboz.bustorino.ActivityMain"/>
	+ android:value="it.reyboz.bustorino.ActivityPrincipal"/>
	</activity>
	</application>

	diff --git a/build.gradle b/build.gradle
	--- a/build.gradle
	+++ b/build.gradle
	@@ -8,7 +8,7 @@

	dependencies {

	- classpath 'com.android.tools.build:gradle:4.0.2'
	+ classpath 'com.android.tools.build:gradle:4.1.3'
	}
	ext {
	//libraries versions
	@@ -92,7 +92,7 @@
	implementation "androidx.work:work-runtime:$work_version"


	- implementation 'com.google.android.material:material:1.3.0'
	+ implementation "com.google.android.material:material:1.3.0"


	implementation 'org.jsoup:jsoup:1.13.1'
	diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
	--- a/gradle/wrapper/gradle-wrapper.properties
	+++ b/gradle/wrapper/gradle-wrapper.properties
	@@ -1,6 +1,6 @@
	-#Thu Oct 01 23:03:06 CEST 2020
	+#Sat Apr 24 16:03:07 CEST 2021
	distributionBase=GRADLE_USER_HOME
	+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
	distributionPath=wrapper/dists
	-zipStoreBase=GRADLE_USER_HOME
	zipStorePath=wrapper/dists
	-distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip
	+zipStoreBase=GRADLE_USER_HOME
	diff --git a/res/layout/nav_header.xml b/res/layout/nav_header.xml
	--- a/res/layout/nav_header.xml
	+++ b/res/layout/nav_header.xml
	@@ -1,19 +1,22 @@
	<?xml version="1.0" encoding="utf-8"?>
	<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	xmlns:app="http://schemas.android.com/apk/res-auto"
	- android:orientation="vertical" android:layout_width="match_parent"
	+ android:layout_width="match_parent"
	android:layout_height="match_parent"
	- android:background="@color/grey_100"
	+ android:background="@color/teal_300"
	+ android:gravity="bottom"
	+ android:minHeight="120dp"
	+ android:orientation="vertical"
	android:padding="16dp"
	- android:theme="@style/ThemeOverlay.AppCompat.Dark"
	- android:gravity="bottom">
	-
	+ android:theme="@style/ThemeOverlay.AppCompat.Dark">
	+ <!--
	<ImageView
	android:id="@+id/nav_img"
	android:layout_width="match_parent"
	android:layout_height="100dp"
	android:minHeight="40dp"
	app:srcCompat="@drawable/ic_mars2020" />
	+ -->

	<TextView

	@@ -21,10 +24,10 @@

	android:layout_height="wrap_content"

	- android:text="@string/app_name"
	+ android:text="@string/app_name_full"

	android:textAppearance="@style/ThemeOverlay.AppCompat.Light"
	- android:textSize="20sp"
	- />
	+ android:textColor="#FFFFFF"
	+ android:textSize="20sp" />

	</LinearLayout>
	\ No newline at end of file
	diff --git a/res/values-it/strings.xml b/res/values-it/strings.xml
	--- a/res/values-it/strings.xml
	+++ b/res/values-it/strings.xml
	@@ -102,7 +102,7 @@
	<string name="settings_group_database">Gestione del database</string>
	<string name="settings_reset_database">Comincia aggiornamento manuale del database</string>

	-
	+ <string name="enable_position_message_map">Consenti l\'accesso alla posizione per mostrarla sulla mappa</string>
	<string name="enableGpsText">Abilitare il GPS</string>
	<string name="settings_search_radius">Raggio di ricerca</string>
	<string name="settings_experimental">Funzionalità sperimentali</string>
	@@ -145,5 +145,7 @@
	<string name="drawer_close">Chiudi drawer</string>
	<string name="experiments">Esperimenti</string>
	<string name="donate_now">Offrici un caffè</string>
	+ <string name="map">Mappa</string>
	+ <string name="stop_search_view_title">Ricerca fermate</string>

	</resources>
	diff --git a/res/values/colors.xml b/res/values/colors.xml
	--- a/res/values/colors.xml
	+++ b/res/values/colors.xml
	@@ -14,5 +14,6 @@
	<color name="accent">#009688</color>-->
	<color name="metro_red">#DE0908</color>
	<color name="blue_extraurbano">#2060DD</color>
	+ <color name="white">#FFFFFF</color>

	</resources>
	\ No newline at end of file
	diff --git a/res/values/strings.xml b/res/values/strings.xml
	--- a/res/values/strings.xml
	+++ b/res/values/strings.xml
	@@ -2,6 +2,7 @@
	<resources>

	<string name="app_name" translatable="false">BusTO</string>
	+ <string name="app_name_full" translatable="false">Libre BusTO</string>
	<string name="app_name_debug" translatable="false">BusTO Debug</string>
	<string name="app_description">You\'re using the latest in technology when it comes to respecting your privacy.
	</string>
	@@ -115,6 +116,7 @@
	<string name="settings_group_database">Database management</string>
	<string name="settings_reset_database">Launch manual database update</string>

	+ <string name="enable_position_message_map">Allow access to position to show it on the map</string>
	<string name="enableGpsText">Please enable GPS</string>
	<string name="database_update_message">Database update in progress…</string>
	<string name="bus_arriving_at">is arriving at</string>
	@@ -162,4 +164,6 @@
	<string name="drawer_close">Close navigation drawer</string>
	<string name="experiments">Experiments</string>
	<string name="donate_now">Buy us a coffee</string>
	+ <string name="map">Map</string>
	+ <string name="stop_search_view_title">Search by stop</string>
	</resources>
	diff --git a/src/debug/AndroidManifest.xml b/src/debug/AndroidManifest.xml
	--- a/src/debug/AndroidManifest.xml
	+++ b/src/debug/AndroidManifest.xml
	@@ -11,7 +11,7 @@
	tools:replace="android:label"
	>
	<activity
	- android:name=".ActivityMain"
	+ android:name=".ActivityPrincipal"
	android:label="@string/app_name_debug"
	tools:replace="android:label"
	/>
	diff --git a/src/it/reyboz/bustorino/ActivityMain.java b/src/it/reyboz/bustorino/ActivityMain.java
	--- a/src/it/reyboz/bustorino/ActivityMain.java
	+++ b/src/it/reyboz/bustorino/ActivityMain.java
	@@ -34,6 +34,7 @@
	import androidx.appcompat.app.ActionBar;
	import androidx.appcompat.widget.Toolbar;
	import androidx.core.app.ActivityCompat;
	+import androidx.core.content.ContextCompat;
	import androidx.preference.PreferenceManager;
	import androidx.work.BackoffPolicy;
	import androidx.work.Constraints;
	@@ -654,21 +655,19 @@

	@Override
	public void run() {
	- final boolean canRunPosition = Build.VERSION.SDK_INT < Build.VERSION_CODES.M \|\| getOption(LOCATION_PERMISSION_GIVEN, false);
	- final boolean noPermission = ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
	- ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED;
	+ //final boolean canRunPosition = Build.VERSION.SDK_INT < Build.VERSION_CODES.M \|\| getOption(LOCATION_PERMISSION_GIVEN, false);
	+ final boolean noPermission = ContextCompat.checkSelfPermission(getApplicationContext(),
	+ Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED;

	//if we don't have the permission, we have to ask for it, if we haven't
	// asked too many times before
	if (noPermission) {
	- if (!canRunPosition) {
	+
	pendingNearbyStopsRequest = true;
	Permissions.assertLocationPermissions(getApplicationContext(),runningAct);
	Log.w(DEBUG_TAG, "Cannot get position: Asking permission, noPositionFromSys: " + noPermission);
	return;
	- } else {
	- Toast.makeText(getApplicationContext(), "Asked for permission position too many times", Toast.LENGTH_LONG).show();
	- }
	+
	} else setOption(LOCATION_PERMISSION_GIVEN, true);

	LocationManager locManager = (LocationManager) getSystemService(LOCATION_SERVICE);
	diff --git a/src/it/reyboz/bustorino/ActivityPrincipal.java b/src/it/reyboz/bustorino/ActivityPrincipal.java
	--- a/src/it/reyboz/bustorino/ActivityPrincipal.java
	+++ b/src/it/reyboz/bustorino/ActivityPrincipal.java
	@@ -1,13 +1,16 @@
	package it.reyboz.bustorino;

	+import android.Manifest;
	import android.content.Intent;
	import android.content.SharedPreferences;
	+import android.content.pm.PackageManager;
	import android.content.res.Configuration;
	import android.net.Uri;
	import android.os.Bundle;
	import android.util.Log;
	import android.view.Menu;
	import android.view.MenuItem;
	+import android.view.View;
	import android.widget.Toast;

	import androidx.annotation.NonNull;
	@@ -30,6 +33,7 @@
	import com.google.android.material.navigation.NavigationView;
	import com.google.android.material.snackbar.Snackbar;

	+import java.util.Arrays;
	import java.util.concurrent.TimeUnit;

	import it.reyboz.bustorino.backend.Stop;
	@@ -82,11 +86,32 @@
	drawerToggle.syncState();
	mDrawer.addDrawerListener(drawerToggle);

	+ mDrawer.addDrawerListener(new DrawerLayout.DrawerListener() {
	+ @Override
	+ public void onDrawerSlide(@NonNull View drawerView, float slideOffset) {
	+
	+ }
	+
	+ @Override
	+ public void onDrawerOpened(@NonNull View drawerView) {
	+ hideKeyboard();
	+ }
	+
	+ @Override
	+ public void onDrawerClosed(@NonNull View drawerView) {
	+
	+ }
	+
	+ @Override
	+ public void onDrawerStateChanged(int newState) {
	+ }
	+ });
	+
	+
	mNavView = findViewById(R.id.nvView);

	setupDrawerContent(mNavView);

	-
	/// LEGACY CODE
	//---------------------------- START INTENT CHECK QUEUE ------------------------------------

	@@ -135,8 +160,6 @@
	requestArrivalsForStopID(busStopID);
	}
	//Try (hopefully) database update
	-
	-
	PeriodicWorkRequest wr = new PeriodicWorkRequest.Builder(DBUpdateWorker.class, 1, TimeUnit.DAYS)
	.setBackoffCriteria(BackoffPolicy.LINEAR, 30, TimeUnit.MINUTES)
	.setConstraints(new Constraints.Builder().setRequiredNetworkType(NetworkType.CONNECTED)
	@@ -189,6 +212,11 @@
	return new ActionBarDrawerToggle(this, mDrawer, toolbar, R.string.drawer_open, R.string.drawer_close);

	}
	+
	+ /**
	+ * Setup drawer actions
	+ * @param navigationView the navigation view on which to set the callbacks
	+ */
	private void setupDrawerContent(NavigationView navigationView) {
	navigationView.setNavigationItemSelectedListener(
	menuItem -> {
	@@ -213,7 +241,21 @@
	return true;
	} else if(menuItem.getItemId() == R.id.nav_map_item){
	closeDrawerIfOpen();
	- createAndShowMapFragment(null);
	+ final String permission = Manifest.permission.WRITE_EXTERNAL_STORAGE;
	+ int result = askForPermissionIfNeeded(permission, STORAGE_PERMISSION_REQ);
	+ switch (result) {
	+ case PERMISSION_OK:
	+ createAndShowMapFragment(null);
	+ break;
	+ case PERMISSION_ASKING:
	+ permissionDoneRunnables.put(permission,
	+ () -> createAndShowMapFragment(null));
	+ break;
	+ case PERMISSION_NEG_CANNOT_ASK:
	+ String storage_perm = getString(R.string.storage_permission);
	+ String text = getString(R.string.too_many_permission_asks, storage_perm);
	+ Toast.makeText(getApplicationContext(),text, Toast.LENGTH_LONG).show();
	+ }
	return true;
	}
	//selectDrawerItem(menuItem);
	@@ -256,6 +298,27 @@
	return super.onCreateOptionsMenu(menu);
	}

	+ @Override
	+ public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
	+ super.onRequestPermissionsResult(requestCode, permissions, grantResults);
	+ if (requestCode==STORAGE_PERMISSION_REQ){
	+ final String storagePerm = Manifest.permission.WRITE_EXTERNAL_STORAGE;
	+ if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
	+ Log.d(DEBUG_TAG, "Permissions check: " + Arrays.toString(permissions));
	+
	+ if (permissionDoneRunnables.containsKey(storagePerm)) {
	+ Runnable toRun = permissionDoneRunnables.get(storagePerm);
	+ if (toRun != null)
	+ toRun.run();
	+ permissionDoneRunnables.remove(storagePerm);
	+ }
	+ } else {
	+ //permission denied
	+ showToastMessage(R.string.permission_storage_maps_msg, false);
	+ }
	+ }
	+ }
	+
	@Override
	public boolean onOptionsItemSelected(@NonNull MenuItem item) {

	@@ -387,21 +450,35 @@
	if (probableFragment!=null){
	probableFragment.readyGUIfor(fragmentType);
	}
	+ int titleResId;
	switch (fragmentType){
	case MAP:
	mNavView.setCheckedItem(R.id.nav_map_item);
	+ titleResId = R.string.map;
	break;
	case FAVORITES:
	mNavView.setCheckedItem(R.id.nav_favorites_item);
	+ titleResId = R.string.nav_favorites_text;
	break;
	case ARRIVALS:
	- case NEARBY_STOPS:
	+ titleResId = R.string.nav_arrivals_text;
	+ mNavView.setCheckedItem(R.id.nav_arrivals);
	+ break;
	case STOPS:
	+ titleResId = R.string.stop_search_view_title;
	+ mNavView.setCheckedItem(R.id.nav_arrivals);
	+ break;
	case MAIN_SCREEN_FRAGMENT:
	+ case NEARBY_STOPS:
	case NEARBY_ARRIVALS:
	+ titleResId=R.string.app_name_full;
	mNavView.setCheckedItem(R.id.nav_arrivals);
	break;
	+ default:
	+ titleResId = 0;
	}
	+ if(getSupportActionBar()!=null && titleResId!=0)
	+ getSupportActionBar().setTitle(titleResId);
	}

	@Override
	diff --git a/src/it/reyboz/bustorino/backend/utils.java b/src/it/reyboz/bustorino/backend/utils.java
	--- a/src/it/reyboz/bustorino/backend/utils.java
	+++ b/src/it/reyboz/bustorino/backend/utils.java
	@@ -6,6 +6,7 @@
	import android.net.NetworkInfo;
	import android.net.Uri;
	import android.util.Log;
	+import android.util.TypedValue;
	import android.view.View;

	public abstract class utils {
	@@ -24,9 +25,15 @@
	return Math.abs(EarthRadius*c);

	}
	+ /*
	public static int convertDipToPixels(Context con,float dips)
	{
	return (int) (dips * con.getResources().getDisplayMetrics().density + 0.5f);
	+ }
	+ */
	+
	+ public static float convertDipToPixels(Context con, float dp){
	+ return TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp,con.getResources().getDisplayMetrics());
	}
	public static int calculateNumColumnsFromSize(View containerView, int pixelsize){
	int width = containerView.getWidth();
	diff --git a/src/it/reyboz/bustorino/fragments/CommonFragmentListener.java b/src/it/reyboz/bustorino/fragments/CommonFragmentListener.java
	--- a/src/it/reyboz/bustorino/fragments/CommonFragmentListener.java
	+++ b/src/it/reyboz/bustorino/fragments/CommonFragmentListener.java
	@@ -1,5 +1,7 @@
	package it.reyboz.bustorino.fragments;

	+import android.view.View;
	+
	public interface CommonFragmentListener {


	diff --git a/src/it/reyboz/bustorino/fragments/FavoritesFragment.java b/src/it/reyboz/bustorino/fragments/FavoritesFragment.java
	--- a/src/it/reyboz/bustorino/fragments/FavoritesFragment.java
	+++ b/src/it/reyboz/bustorino/fragments/FavoritesFragment.java
	@@ -23,6 +23,7 @@
	import androidx.annotation.Nullable;
	import androidx.lifecycle.ViewModelProvider;

	+import java.util.ArrayList;
	import java.util.List;

	import it.reyboz.bustorino.ActivityFavorites;
	@@ -93,6 +94,8 @@

	FavoritesViewModel model = new ViewModelProvider(this).get(FavoritesViewModel.class);
	model.getFavorites().observe(getViewLifecycleOwner(), this::showStops);
	+
	+ showStops(new ArrayList<>());
	return root;
	}
	@Override
	diff --git a/src/it/reyboz/bustorino/fragments/MainScreenFragment.java b/src/it/reyboz/bustorino/fragments/MainScreenFragment.java
	--- a/src/it/reyboz/bustorino/fragments/MainScreenFragment.java
	+++ b/src/it/reyboz/bustorino/fragments/MainScreenFragment.java
	@@ -5,12 +5,12 @@
	import android.content.pm.PackageManager;
	import android.location.Criteria;
	import android.location.Location;
	-import android.location.LocationListener;
	-import android.location.LocationManager;
	-import android.location.LocationProvider;
	import android.os.Build;
	import android.os.Bundle;

	+import androidx.activity.result.ActivityResultCallback;
	+import androidx.activity.result.ActivityResultLauncher;
	+import androidx.activity.result.contract.ActivityResultContracts;
	import androidx.annotation.NonNull;
	import androidx.annotation.Nullable;
	import androidx.appcompat.widget.AppCompatImageButton;
	@@ -38,6 +38,8 @@
	import com.google.android.material.floatingactionbutton.FloatingActionButton;
	import com.google.zxing.integration.android.IntentIntegrator;

	+import java.util.Map;
	+
	import it.reyboz.bustorino.R;
	import it.reyboz.bustorino.backend.ArrivalsFetcher;
	import it.reyboz.bustorino.backend.FiveTAPIFetcher;
	@@ -45,11 +47,14 @@
	import it.reyboz.bustorino.backend.FiveTStopsFetcher;
	import it.reyboz.bustorino.backend.GTTJSONFetcher;
	import it.reyboz.bustorino.backend.GTTStopsFetcher;
	+import it.reyboz.bustorino.backend.Palina;
	import it.reyboz.bustorino.backend.StopsFinderByName;
	+import it.reyboz.bustorino.middleware.AppLocationManager;
	import it.reyboz.bustorino.middleware.AsyncDataDownload;
	+import it.reyboz.bustorino.util.LocationCriteria;
	import it.reyboz.bustorino.util.Permissions;

	-import static android.content.Context.LOCATION_SERVICE;
	+import static it.reyboz.bustorino.util.Permissions.LOCATION_PERMISSIONS;
	import static it.reyboz.bustorino.util.Permissions.LOCATION_PERMISSION_GIVEN;


	@@ -112,14 +117,74 @@
	}
	};

	+ /// LOCATION STUFF ///
	+ boolean pendingNearbyStopsRequest = false;
	+ boolean locationPermissionGranted, locationPermissionAsked = false;
	+ AppLocationManager locationManager;


	+ private final LocationCriteria cr = new LocationCriteria(2000, 10000);
	+ //Location
	+ private AppLocationManager.LocationRequester requester = new AppLocationManager.LocationRequester() {
	+ @Override
	+ public void onLocationChanged(Location loc) {

	- /// LOCATION STUFF ///
	- boolean pendingNearbyStopsRequest = false;
	- LocationManager locmgr;
	+ }
	+
	+ @Override
	+ public void onLocationStatusChanged(int status) {
	+
	+ if(status == AppLocationManager.LOCATION_GPS_AVAILABLE && !isNearbyFragmentShown()){
	+ //request Stops
	+ pendingNearbyStopsRequest = false;
	+
	+ mainHandler.post(new NearbyStopsRequester(getContext(), cr));
	+ }
	+ }
	+
	+ @Override
	+ public long getLastUpdateTimeMillis() {
	+ return 50;
	+ }
	+
	+ @Override
	+ public LocationCriteria getLocationCriteria() {
	+ return cr;
	+ }
	+
	+ @Override
	+ public void onLocationProviderAvailable() {
	+ //Log.w(DEBUG_TAG, "pendingNearbyStopRequest: "+pendingNearbyStopsRequest);
	+ if(!isNearbyFragmentShown()){
	+ pendingNearbyStopsRequest = false;
	+ mainHandler.post(new NearbyStopsRequester(getContext(), cr));
	+ }
	+ }
	+
	+ @Override
	+ public void onLocationDisabled() {
	+
	+ }
	+ };
	+ private final ActivityResultLauncher<String[]> requestPermissionLauncher =
	+ registerForActivityResult(new ActivityResultContracts.RequestMultiplePermissions(), new ActivityResultCallback<Map<String, Boolean>>() {
	+ @Override
	+ public void onActivityResult(Map<String, Boolean> result) {
	+ if(result==null \|\| result.get(Manifest.permission.ACCESS_COARSE_LOCATION) == null
	+ \|\|result.get(Manifest.permission.ACCESS_FINE_LOCATION) ) return;
	+
	+ if(result.get(Manifest.permission.ACCESS_COARSE_LOCATION) && result.get(Manifest.permission.ACCESS_FINE_LOCATION)){
	+ locationPermissionGranted = true;
	+ Log.w(DEBUG_TAG, "Starting position");
	+ if (mListener!= null && getContext()!=null){
	+ if (locationManager==null)
	+ locationManager = AppLocationManager.getInstance(getContext());
	+ locationManager.addLocationRequestFor(requester);
	+ }
	+ }
	+ }
	+ });

	- private final Criteria cr = new Criteria();

	//// ACTIVITY ATTACHED (LISTENER ///
	private CommonFragmentListener mListener;
	@@ -208,7 +273,7 @@
	cr.setCostAllowed(true);
	cr.setPowerRequirement(Criteria.NO_REQUIREMENT);

	- locmgr = (LocationManager) getContext().getSystemService(LOCATION_SERVICE);
	+ locationManager = AppLocationManager.getInstance(getContext());

	Log.d(DEBUG_TAG, "OnCreateView, savedInstanceState null: "+(savedInstanceState==null));

	@@ -272,16 +337,15 @@
	if (setupOnAttached) {
	if (pendingStopID==null)
	//We want the nearby bus stops!
	- mainHandler.post(new NearbyStopsRequester(getContext(), cr, locListener));
	+ mainHandler.post(new NearbyStopsRequester(context, cr));
	else{
	///TODO: if there is a stop displayed, we need to hold the update
	}
	- //If there are no providers available, then, wait for them

	setupOnAttached = false;
	- } else {
	}

	+
	}
	@Override
	public void onDetach() {
	@@ -295,8 +359,24 @@
	public void onResume() {

	final Context con = getContext();
	- if (con != null)
	- locmgr = (LocationManager) getContext().getSystemService(LOCATION_SERVICE);
	+ Log.w(DEBUG_TAG, "OnResume called");
	+ if (con != null) {
	+ if(locationManager==null)
	+ locationManager = AppLocationManager.getInstance(con);
	+
	+ if(Permissions.locationPermissionGranted(con)){
	+ Log.d(DEBUG_TAG, "Location permission OK");
	+ if(!locationManager.isRequesterRegistered(requester))
	+ locationManager.addLocationRequestFor(requester);
	+ } else if(shouldShowRequestPermissionRationale(Manifest.permission.ACCESS_FINE_LOCATION)){
	+ //we have already asked for the location, and we should show an explanation in order
	+ // to ask again (TODO)
	+ //do nothing
	+ } else{
	+ //request permission
	+ requestPermissionLauncher.launch(Permissions.LOCATION_PERMISSIONS);
	+ }
	+ }
	else {
	Log.w(DEBUG_TAG, "Context is null at onResume");
	}
	@@ -324,7 +404,7 @@
	@Override
	public void onPause() {
	//mainHandler = null;
	- locmgr = null;
	+ locationManager.removeLocationRequestFor(requester);
	super.onPause();
	}

	@@ -384,10 +464,8 @@
	}

	////////////////////////////////////// GUI HELPERS /////////////////////////////////////////////
	-
	public void showKeyboard() {
	- if (getActivity() == null)
	- return;
	+ if(getActivity() == null) return;
	InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
	View view = searchMode == SEARCH_BY_ID ? busStopSearchByIDEditText : busStopSearchByNameEditText;
	imm.showSoftInput(view, InputMethodManager.SHOW_IMPLICIT);
	@@ -408,6 +486,10 @@
	busStopSearchByNameEditText.setVisibility(View.VISIBLE);
	floatingActionButton.setImageResource(R.drawable.numeric);
	}
	+ protected boolean isNearbyFragmentShown(){
	+ Fragment fragment = getChildFragmentManager().findFragmentByTag(NearbyStopsFragment.FRAGMENT_TAG);
	+ return (fragment!= null && fragment.isVisible());
	+ }

	/**
	* Having that cursor at the left of the edit text makes me cancer.
	@@ -456,6 +538,17 @@
	//actionHelpMenuItem.setVisible(false);
	}

	+ void showNearbyStopsFragment(){
	+ swipeRefreshLayout.setVisibility(View.VISIBLE);
	+ NearbyStopsFragment fragment = NearbyStopsFragment.newInstance(NearbyStopsFragment.TYPE_STOPS);
	+ Fragment oldFrag = fragMan.findFragmentById(R.id.resultFrame);
	+ FragmentTransaction ft = fragMan.beginTransaction();
	+ if (oldFrag != null)
	+ ft.remove(oldFrag);
	+ ft.add(R.id.resultFrame, fragment, NearbyStopsFragment.FRAGMENT_TAG);
	+ ft.commit();
	+ }
	+

	@Override
	public void showFloatingActionButton(boolean yes) {
	@@ -475,7 +568,7 @@

	//if we are getting results, already, stop waiting for nearbyStops
	if (pendingNearbyStopsRequest && (fragmentType == FragmentKind.ARRIVALS \|\| fragmentType == FragmentKind.STOPS)) {
	- locmgr.removeUpdates(locListener);
	+ locationManager.removeLocationRequestFor(requester);
	pendingNearbyStopsRequest = false;
	}

	@@ -538,65 +631,48 @@
	}
	}
	/////////// LOCATION METHODS //////////
	- final LocationListener locListener = new LocationListener() {
	- @Override
	- public void onLocationChanged(Location location) {
	- Log.d(DEBUG_TAG, "Location changed");
	- }
	-
	- @Override
	- public void onStatusChanged(String provider, int status, Bundle extras) {
	- Log.d(DEBUG_TAG, "Location provider status: " + status);
	- if (status == LocationProvider.AVAILABLE) {
	- resolveStopRequest(provider);
	- }
	- }
	-
	- @Override
	- public void onProviderEnabled(String provider) {
	- resolveStopRequest(provider);
	- }
	-
	- @Override
	- public void onProviderDisabled(String provider) {

	- }
	- };
	-
	- private void resolveStopRequest(String provider) {
	+ /*
	+ private void startStopRequest(String provider) {
	Log.d(DEBUG_TAG, "Provider " + provider + " got enabled");
	if (locmgr != null && mainHandler != null && pendingNearbyStopsRequest && locmgr.getProvider(provider).meetsCriteria(cr)) {
	- pendingNearbyStopsRequest = false;
	- mainHandler.post(new NearbyStopsRequester(getContext(), cr, locListener));
	+
	}
	}

	+ */
	+
	/**
	* Run location requests separately and asynchronously
	*/
	class NearbyStopsRequester implements Runnable {
	Context appContext;
	Criteria cr;
	- LocationListener listener;

	- public NearbyStopsRequester(Context appContext, Criteria criteria, LocationListener listener) {
	+ public NearbyStopsRequester(Context appContext, Criteria criteria) {
	this.appContext = appContext.getApplicationContext();
	this.cr = criteria;
	- this.listener = listener;
	}

	@Override
	public void run() {
	- final boolean canRunPosition = Build.VERSION.SDK_INT < Build.VERSION_CODES.M \|\| getOption(LOCATION_PERMISSION_GIVEN, false);
	+ if(isNearbyFragmentShown()) {
	+ //nothing to do
	+ Log.w(DEBUG_TAG, "launched nearby fragment request but we already are showing");
	+ return;
	+ }
	+
	+ final boolean isOldVersion = Build.VERSION.SDK_INT < Build.VERSION_CODES.M;
	final boolean noPermission = ActivityCompat.checkSelfPermission(appContext, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
	ActivityCompat.checkSelfPermission(appContext, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED;

	//if we don't have the permission, we have to ask for it, if we haven't
	// asked too many times before
	if (noPermission) {
	- if (!canRunPosition) {
	+ if (!isOldVersion) {
	pendingNearbyStopsRequest = true;
	- Permissions.assertLocationPermissions(appContext,getActivity());
	+ //Permissions.assertLocationPermissions(appContext,getActivity());
	+ requestPermissionLauncher.launch(LOCATION_PERMISSIONS);
	Log.w(DEBUG_TAG, "Cannot get position: Asking permission, noPositionFromSys: " + noPermission);
	return;
	} else {
	@@ -604,35 +680,20 @@
	}
	} else setOption(LOCATION_PERMISSION_GIVEN, true);

	- LocationManager locManager = (LocationManager) appContext.getSystemService(LOCATION_SERVICE);
	- if (locManager == null) {
	- Log.e(DEBUG_TAG, "location manager is nihil, cannot create NearbyStopsFragment");
	- return;
	- }
	- if (Permissions.anyLocationProviderMatchesCriteria(locManager, cr, true)
	+ AppLocationManager appLocationManager = AppLocationManager.getInstance(appContext);
	+ final boolean haveProviders = appLocationManager.anyLocationProviderMatchesCriteria(cr);
	+ if (haveProviders
	&& fragmentHelper.getLastSuccessfullySearchedBusStop() == null
	&& !fragMan.isDestroyed()) {
	//Go ahead with the request
	Log.d("mainActivity", "Recreating stop fragment");
	- swipeRefreshLayout.setVisibility(View.VISIBLE);
	- NearbyStopsFragment fragment = NearbyStopsFragment.newInstance(NearbyStopsFragment.TYPE_STOPS);
	- Fragment oldFrag = fragMan.findFragmentById(R.id.resultFrame);
	- FragmentTransaction ft = fragMan.beginTransaction();
	- if (oldFrag != null)
	- ft.remove(oldFrag);
	- ft.add(R.id.resultFrame, fragment, "nearbyStop_correct");
	- ft.commit();
	- //fragMan.executePendingTransactions();
	+ showNearbyStopsFragment();
	pendingNearbyStopsRequest = false;
	- } else if (!Permissions.anyLocationProviderMatchesCriteria(locManager, cr, true)) {
	- //Wait for the providers
	- Log.d(DEBUG_TAG, "Queuing position request");
	- pendingNearbyStopsRequest = true;
	-
	- locManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 10, 0.1f, listener);
	+ } else if(!haveProviders){
	+ Log.e(DEBUG_TAG, "NO PROVIDERS FOR POSITION");
	}

	}
	}

	}
	\ No newline at end of file
	diff --git a/src/it/reyboz/bustorino/fragments/MapFragment.java b/src/it/reyboz/bustorino/fragments/MapFragment.java
	--- a/src/it/reyboz/bustorino/fragments/MapFragment.java
	+++ b/src/it/reyboz/bustorino/fragments/MapFragment.java
	@@ -1,9 +1,9 @@
	package it.reyboz.bustorino.fragments;

	import android.Manifest;
	+import android.annotation.SuppressLint;
	import android.content.Context;

	-import android.content.pm.PackageManager;
	import android.location.Location;
	import android.location.LocationManager;
	import android.os.AsyncTask;
	@@ -13,10 +13,13 @@
	import android.view.View;
	import android.view.ViewGroup;
	import android.widget.ImageButton;
	+import android.widget.Toast;

	+import androidx.activity.result.ActivityResultCallback;
	+import androidx.activity.result.ActivityResultLauncher;
	+import androidx.activity.result.contract.ActivityResultContracts;
	import androidx.annotation.NonNull;
	import androidx.annotation.Nullable;
	-import androidx.core.app.ActivityCompat;
	import androidx.core.content.res.ResourcesCompat;
	import androidx.preference.PreferenceManager;

	@@ -40,6 +43,7 @@
	import java.util.Arrays;
	import java.util.HashSet;
	import java.util.List;
	+import java.util.Map;

	import it.reyboz.bustorino.R;
	import it.reyboz.bustorino.backend.Stop;
	@@ -47,8 +51,7 @@
	import it.reyboz.bustorino.map.CustomInfoWindow;
	import it.reyboz.bustorino.map.LocationOverlay;
	import it.reyboz.bustorino.middleware.GeneralActivity;
	-
	-import static it.reyboz.bustorino.util.Permissions.PERMISSION_REQUEST_POSITION;
	+import it.reyboz.bustorino.util.Permissions;

	public class MapFragment extends BaseFragment {

	@@ -108,6 +111,30 @@
	}
	};

	+ private final ActivityResultLauncher<String[]> positionRequestLauncher =
	+ registerForActivityResult(new ActivityResultContracts.RequestMultiplePermissions(), new ActivityResultCallback<Map<String, Boolean>>() {
	+ @Override
	+ @SuppressLint("MissingPermission")
	+ public void onActivityResult(Map<String, Boolean> result) {
	+ if(result.get(Manifest.permission.ACCESS_COARSE_LOCATION) && result.get(Manifest.permission.ACCESS_FINE_LOCATION)){
	+
	+ map.getOverlays().remove(mLocationOverlay);
	+ startLocationOverlay(true);
	+ if(getContext()==null \|\| getContext().getSystemService(Context.LOCATION_SERVICE)==null)
	+ return;
	+ LocationManager locationManager = (LocationManager) getContext().getSystemService(Context.LOCATION_SERVICE);
	+ Location userLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
	+ if (userLocation != null) {
	+ map.getController().setZoom(POSITION_FOUND_ZOOM);
	+ GeoPoint startPoint = new GeoPoint(userLocation);
	+ setLocationFollowing(true);
	+ map.getController().setCenter(startPoint);
	+ }
	+ }
	+ else Log.w(DEBUG_TAG,"No location permission");
	+ }
	+ });
	+
	public MapFragment() {
	}
	public static MapFragment getInstance(){
	@@ -181,13 +208,21 @@

	btCenterMap.setOnClickListener(v -> {
	//Log.i(TAG, "centerMap clicked ");
	- final GeoPoint myPosition = mLocationOverlay.getMyLocation();
	- map.getController().animateTo(myPosition);
	+ if(Permissions.locationPermissionGranted(getContext())) {
	+ final GeoPoint myPosition = mLocationOverlay.getMyLocation();
	+ map.getController().animateTo(myPosition);
	+ } else
	+ Toast.makeText(getContext(), R.string.enable_position_message_map, Toast.LENGTH_SHORT)
	+ .show();
	});

	btFollowMe.setOnClickListener(v -> {
	//Log.i(TAG, "btFollowMe clicked ");
	- switchLocationFollowing(!followingLocation);
	+ if(Permissions.locationPermissionGranted(getContext()))
	+ setLocationFollowing(!followingLocation);
	+ else
	+ Toast.makeText(getContext(), R.string.enable_position_message_map, Toast.LENGTH_SHORT)
	+ .show();
	});

	return root;
	@@ -261,8 +296,11 @@
	* Switch following the location on and off
	* @param value true if we want to follow location
	*/
	- public void switchLocationFollowing(Boolean value){
	+ public void setLocationFollowing(Boolean value){
	followingLocation = value;
	+ if(mLocationOverlay==null \|\| getContext() == null)
	+ //nothing else to do
	+ return;
	if (value){
	mLocationOverlay.enableFollowLocation();
	} else {
	@@ -282,6 +320,26 @@

	}

	+ /**
	+ * Start the location overlay. Enable only when
	+ * a) we know we have the permission
	+ * b) the location map is set
	+ */
	+ private void startLocationOverlay(boolean enableLocation){
	+ if(getActivity()== null) throw new IllegalStateException("Cannot enable LocationOverlay now");
	+ // Location Overlay
	+ // from OpenBikeSharing (THANK GOD)
	+ Log.d(DEBUG_TAG, "Starting position overlay");
	+ GpsMyLocationProvider imlp = new GpsMyLocationProvider(getActivity().getBaseContext());
	+ imlp.setLocationUpdateMinDistance(5);
	+ imlp.setLocationUpdateMinTime(2000);
	+ this.mLocationOverlay = new LocationOverlay(imlp,map, locationCallbacks);
	+ if (enableLocation) mLocationOverlay.enableMyLocation();
	+ mLocationOverlay.setOptionsMenuEnabled(true);
	+
	+ map.getOverlays().add(this.mLocationOverlay);
	+ }
	+
	public void startMap(Bundle incoming, Bundle savedInstanceState) {
	//Check that we're attached
	GeneralActivity activity = getActivity() instanceof GeneralActivity ? (GeneralActivity) getActivity() : null;
	@@ -312,52 +370,48 @@
	IMapController mapController = map.getController();
	GeoPoint startPoint = null;

	- boolean havePositionPermission = true;
	-
	- if (ActivityCompat.checkSelfPermission(activity, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(activity, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
	- activity.askForPermissionIfNeeded(Manifest.permission.ACCESS_FINE_LOCATION, PERMISSION_REQUEST_POSITION);
	- havePositionPermission = false;
	- }
	- // Location Overlay
	- // from OpenBikeSharing (THANK GOD)
	- GpsMyLocationProvider imlp = new GpsMyLocationProvider(activity.getBaseContext());
	- imlp.setLocationUpdateMinDistance(5);
	- imlp.setLocationUpdateMinTime(2000);
	- this.mLocationOverlay = new LocationOverlay(imlp,map, locationCallbacks);
	- mLocationOverlay.enableMyLocation();
	- mLocationOverlay.setOptionsMenuEnabled(true);
	-
	+ // set the center point
	if (marker != null) {
	startPoint = marker;
	mapController.setZoom(POSITION_FOUND_ZOOM);
	- switchLocationFollowing(false);
	+ setLocationFollowing(false);
	} else if (savedInstanceState != null) {
	mapController.setZoom(savedInstanceState.getDouble(MAP_CURRENT_ZOOM_KEY));
	mapController.setCenter(new GeoPoint(savedInstanceState.getDouble(MAP_CENTER_LAT_KEY),
	savedInstanceState.getDouble(MAP_CENTER_LON_KEY)));
	Log.d(DEBUG_TAG, "Location following from savedInstanceState: "+savedInstanceState.getBoolean(FOLLOWING_LOCAT_KEY));
	- switchLocationFollowing(savedInstanceState.getBoolean(FOLLOWING_LOCAT_KEY));
	+ setLocationFollowing(savedInstanceState.getBoolean(FOLLOWING_LOCAT_KEY));
	} else {
	Log.d(DEBUG_TAG, "No position found from intent or saved state");
	boolean found = false;
	LocationManager locationManager =
	(LocationManager) getContext().getSystemService(Context.LOCATION_SERVICE);
	- if (locationManager != null) {
	+ //check for permission
	+ if (locationManager != null && Permissions.locationPermissionGranted(activity)) {

	+ @SuppressLint("MissingPermission")
	Location userLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
	if (userLocation != null) {
	mapController.setZoom(POSITION_FOUND_ZOOM);
	startPoint = new GeoPoint(userLocation);
	found = true;
	- switchLocationFollowing(true);
	+ setLocationFollowing(true);
	+ }
	+ } else if(!Permissions.locationPermissionGranted(activity)){
	+ if(shouldShowRequestPermissionRationale(Manifest.permission.ACCESS_FINE_LOCATION)){
	+ //TODO: show dialog for permission rationale
	+ Toast.makeText(activity, R.string.enable_position_message_map, Toast.LENGTH_SHORT).show();
	}
	+ positionRequestLauncher.launch(Permissions.LOCATION_PERMISSIONS);
	+
	}
	if(!found){
	startPoint = new GeoPoint(DEFAULT_CENTER_LAT, DEFAULT_CENTER_LON);
	- mapController.setZoom(16.0);
	- switchLocationFollowing(false);
	+ mapController.setZoom(17.0);
	+ setLocationFollowing(false);
	}
	}
	+ startLocationOverlay(Permissions.locationPermissionGranted(activity));

	// set the minimum zoom level
	map.setMinZoomLevel(15.0);
	@@ -366,10 +420,6 @@
	mapController.setCenter(startPoint);
	}

	-
	-
	- map.getOverlays().add(this.mLocationOverlay);
	-
	//add stops overlay
	map.getOverlays().add(this.stopsFolderOverlay);

	diff --git a/src/it/reyboz/bustorino/fragments/NearbyStopsFragment.java b/src/it/reyboz/bustorino/fragments/NearbyStopsFragment.java
	--- a/src/it/reyboz/bustorino/fragments/NearbyStopsFragment.java
	+++ b/src/it/reyboz/bustorino/fragments/NearbyStopsFragment.java
	@@ -68,6 +68,8 @@
	public final static int TYPE_STOPS = 19, TYPE_ARRIVALS = 20;
	private int fragment_type;

	+ public final static String FRAGMENT_TAG="NearbyStopsFrag";
	+
	//data Bundle
	private final String BUNDLE_LOCATION = "location";
	private final int LOADER_ID = 0;
	@@ -135,12 +137,13 @@
	}

	@Override
	- public View onCreateView(LayoutInflater inflater, ViewGroup container,
	+ public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
	Bundle savedInstanceState) {
	// Inflate the layout for this fragment
	+ if (getContext() == null) throw new RuntimeException();
	View root = inflater.inflate(R.layout.fragment_nearby_stops, container, false);
	gridRecyclerView = root.findViewById(R.id.stopGridRecyclerView);
	- gridLayoutManager = new AutoFitGridLayoutManager(getContext().getApplicationContext(), utils.convertDipToPixels(getContext(),COLUMN_WIDTH_DP));
	+ gridLayoutManager = new AutoFitGridLayoutManager(getContext().getApplicationContext(), Float.valueOf(utils.convertDipToPixels(getContext(),COLUMN_WIDTH_DP)).intValue());
	gridRecyclerView.setLayoutManager(gridLayoutManager);
	gridRecyclerView.setHasFixedSize(false);
	circlingProgressBar = root.findViewById(R.id.loadingBar);
	@@ -226,7 +229,6 @@
	+ " must implement OnFragmentInteractionListener");
	}
	Log.d(DEBUG_TAG, "OnAttach called");
	-
	}

	@Override
	@@ -408,6 +410,8 @@
	gridRecyclerView.setVisibility(View.VISIBLE);
	}
	messageTextView.setVisibility(View.GONE);
	+
	+ if(mListener!=null) mListener.readyGUIfor(FragmentKind.NEARBY_STOPS);
	}

	private void showArrivalsInRecycler(List<Palina> palinas){
	@@ -434,6 +438,8 @@
	//arrivalsStopAdapter.notifyDataSetChanged();

	showRecyclerHidingLoadMessage();
	+ if(mListener!=null) mListener.readyGUIfor(FragmentKind.NEARBY_ARRIVALS);
	+
	}

	private void setNoStopsLayout(){
	@@ -601,7 +607,7 @@
	@Override
	public LocationCriteria getLocationCriteria() {

	- return new LocationCriteria(60,TIME_INTERVAL_REQUESTS);
	+ return new LocationCriteria(120,TIME_INTERVAL_REQUESTS);
	}

	@Override
	@@ -611,6 +617,16 @@
	void resetUpdateTime(){
	lastUpdateTime = -1;
	}
	+
	+ @Override
	+ public void onLocationProviderAvailable() {
	+
	+ }
	+
	+ @Override
	+ public void onLocationDisabled() {
	+
	+ }
	}

	/**
	diff --git a/src/it/reyboz/bustorino/map/LocationOverlay.java b/src/it/reyboz/bustorino/map/LocationOverlay.java
	--- a/src/it/reyboz/bustorino/map/LocationOverlay.java
	+++ b/src/it/reyboz/bustorino/map/LocationOverlay.java
	@@ -44,6 +44,7 @@

	@Override
	public void disableFollowLocation() {
	+
	super.disableFollowLocation();
	callbacks.onDisableFollowMyLocation();
	}
	diff --git a/src/it/reyboz/bustorino/middleware/AppLocationManager.java b/src/it/reyboz/bustorino/middleware/AppLocationManager.java
	--- a/src/it/reyboz/bustorino/middleware/AppLocationManager.java
	+++ b/src/it/reyboz/bustorino/middleware/AppLocationManager.java
	@@ -17,7 +17,10 @@
	*/
	package it.reyboz.bustorino.middleware;

	+import android.Manifest;
	import android.content.Context;
	+import android.content.pm.PackageManager;
	+import android.location.Criteria;
	import android.location.Location;
	import android.location.LocationListener;
	import android.location.LocationManager;
	@@ -25,7 +28,11 @@
	import android.os.Bundle;
	import android.util.Log;
	import android.widget.Toast;
	+
	+import androidx.core.content.ContextCompat;
	+
	import it.reyboz.bustorino.util.LocationCriteria;
	+import it.reyboz.bustorino.util.Permissions;

	import java.lang.ref.WeakReference;
	import java.util.ArrayList;
	@@ -39,37 +46,42 @@
	public static final int LOCATION_GPS_AVAILABLE = 22;
	public static final int LOCATION_UNAVAILABLE = -22;

	- private Context con;
	- private LocationManager locMan;
	+ private final Context appContext;
	+ private final LocationManager locMan;
	public static final String DEBUG_TAG = "BUSTO LocAdapter";
	private final String BUNDLE_LOCATION = "location";
	private static AppLocationManager instance;
	private int oldGPSLocStatus = LOCATION_UNAVAILABLE;
	private int minimum_time_milli = -1;

	- private ArrayList<WeakReference<LocationRequester>> requestersRef = new ArrayList<>();
	+ private boolean isLocationPermissionGiven = false;
	+
	+ private final ArrayList<WeakReference<LocationRequester>> requestersRef = new ArrayList<>();


	- private AppLocationManager(Context con) {
	- this.con = con.getApplicationContext();
	- locMan = (LocationManager) con.getSystemService(Context.LOCATION_SERVICE);
	+ private AppLocationManager(Context context) {
	+ this.appContext = context.getApplicationContext();
	+ locMan = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
	+ isLocationPermissionGiven = checkLocationPermission(context);
	}

	public static AppLocationManager getInstance(Context con) {
	- if(instance==null) instance = new AppLocationManager(con.getApplicationContext());
	+ if(instance==null) instance = new AppLocationManager(con);
	return instance;
	}
	+
	+ public static boolean checkLocationPermission(Context context){
	+ return ContextCompat.checkSelfPermission(context,
	+ Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED;
	+ }


	- private void requestGPSPositionUpdates(){
	+ private void requestGPSPositionUpdates() throws SecurityException{
	final int timeinterval = (minimum_time_milli>0 && minimum_time_milli<Integer.MAX_VALUE)? minimum_time_milli : 2000;
	- try {
	- locMan.removeUpdates(this);
	- locMan.requestLocationUpdates(LocationManager.GPS_PROVIDER, timeinterval, 5, this);
	- } catch (SecurityException exc){
	- exc.printStackTrace();
	- Toast.makeText(con,"Cannot access GPS location",Toast.LENGTH_SHORT).show();
	- }
	+
	+ locMan.removeUpdates(this);
	+ locMan.requestLocationUpdates(LocationManager.GPS_PROVIDER, timeinterval, 5, this);
	+
	}
	private void cleanAndUpdateRequesters(){
	minimum_time_milli = Integer.MAX_VALUE;
	@@ -88,15 +100,19 @@
	public void addLocationRequestFor(LocationRequester req){
	boolean present = false;
	minimum_time_milli = Integer.MAX_VALUE;
	+ int countNull = 0;
	ListIterator<WeakReference<LocationRequester>> iter = requestersRef.listIterator();
	while(iter.hasNext()){
	final LocationRequester cReq = iter.next().get();
	- if(cReq==null) iter.remove();
	- else if(cReq.equals(req)){
	+ if(cReq==null) {
	+ countNull++;
	+ iter.remove();
	+ } else if(cReq.equals(req)){
	present = true;
	minimum_time_milli = Math.min(cReq.getLocationCriteria().getTimeInterval(),minimum_time_milli);
	}
	}
	+ Log.d(DEBUG_TAG, countNull+" listeners have been removed because null");
	if(!present) {
	WeakReference<LocationRequester> newref = new WeakReference<>(req);
	requestersRef.add(newref);
	@@ -104,7 +120,7 @@
	Log.d(DEBUG_TAG,"Added new stop requester, instance of "+req.getClass().getSimpleName());
	}
	if(requestersRef.size()>0){
	- Log.d(DEBUG_TAG,"Requesting position updates");
	+ Log.d(DEBUG_TAG,"Requesting location updates");
	requestGPSPositionUpdates();

	}
	@@ -134,6 +150,12 @@
	else cReq.onLocationStatusChanged(status);
	}
	}
	+ public boolean isRequesterRegistered(LocationRequester requester){
	+ for(WeakReference<LocationRequester> regRef: requestersRef){
	+ if(regRef.get()!=null && regRef.get() ==requester) return true;
	+ }
	+ return false;
	+ }

	@Override
	public void onLocationChanged(Location location) {
	@@ -176,21 +198,35 @@
	}
	oldGPSLocStatus = status;
	}
	- Log.d(DEBUG_TAG, "Provider: "+provider+" status: "+status);
	+ Log.d(DEBUG_TAG, "Provider status changed: "+provider+" status: "+status);
	}

	@Override
	public void onProviderEnabled(String provider) {
	+ cleanAndUpdateRequesters();
	requestGPSPositionUpdates();
	Log.d(DEBUG_TAG, "Provider: "+provider+" enabled");
	+ for(WeakReference<LocationRequester> req: requestersRef){
	+ if(req.get()==null) continue;
	+ req.get().onLocationProviderAvailable();
	+ }
	+
	}

	@Override
	public void onProviderDisabled(String provider) {
	- locMan.removeUpdates(this);
	+ cleanAndUpdateRequesters();
	+ for(WeakReference<LocationRequester> req: requestersRef){
	+ if(req.get()==null) continue;
	+ req.get().onLocationDisabled();
	+ }
	+ //locMan.removeUpdates(this);
	Log.d(DEBUG_TAG, "Provider: "+provider+" disabled");
	}

	+ public boolean anyLocationProviderMatchesCriteria(Criteria cr) {
	+ return Permissions.anyLocationProviderMatchesCriteria(locMan, cr, true);
	+ }
	/**
	* Interface to be implemented to get the location request
	*/
	@@ -207,6 +243,16 @@
	*/
	void onLocationStatusChanged(int status);

	+ /**
	+ * We have a location provider available
	+ */
	+ void onLocationProviderAvailable();
	+ /**
	+ * Called when location is disabled
	+ */
	+ void onLocationDisabled();
	+
	+
	/**
	* Give the last time of update the requester has
	* Set it to -1 in order to receive each new location
	diff --git a/src/it/reyboz/bustorino/middleware/GeneralActivity.java b/src/it/reyboz/bustorino/middleware/GeneralActivity.java
	--- a/src/it/reyboz/bustorino/middleware/GeneralActivity.java
	+++ b/src/it/reyboz/bustorino/middleware/GeneralActivity.java
	@@ -2,12 +2,16 @@

	import android.Manifest;
	import android.content.Context;
	+import android.content.Intent;
	import android.content.SharedPreferences;
	import android.content.pm.PackageManager;
	import android.content.res.Resources;
	+import android.graphics.Rect;
	import android.net.ConnectivityManager;
	import android.net.NetworkInfo;
	import com.google.android.material.snackbar.Snackbar;
	+
	+import androidx.annotation.Nullable;
	import androidx.core.app.ActivityCompat;
	import androidx.core.content.ContextCompat;
	import androidx.appcompat.app.AppCompatActivity;
	@@ -20,6 +24,7 @@
	import java.util.HashMap;

	import it.reyboz.bustorino.R;
	+import it.reyboz.bustorino.backend.utils;

	/**
	* Activity class that contains all the generally useful methods
	@@ -81,7 +86,7 @@
	synchronized (this){
	if (permissionAsked.containsKey(permission)){
	num_trials = permissionAsked.get(permission);
	- if (num_trials != null && num_trials > 3)
	+ if (num_trials != null && num_trials > 4)
	alreadyAsked = true;

	}
	@@ -121,4 +126,29 @@
	ActivityCompat.requestPermissions(this,permissionstoRequest.toArray(new String[permissionstoRequest]));
	}
	*/
	+
	+ //KEYBOARD STUFF
	+ protected View getRootView() {
	+ return findViewById(android.R.id.content);
	+ }
	+
	+ /**
	+ * This method doesn't work, DO NOT USE
	+ * @return if the keyboard is open
	+ * TODO: fix this if you want
	+ */
	+ @Deprecated
	+ public Boolean isKeyboardOpen(){
	+ Rect visibleBounds = new Rect();
	+ this.getRootView().getWindowVisibleDisplayFrame(visibleBounds);
	+
	+ double heightDiff = getRootView().getHeight() - visibleBounds.height();
	+ final double marginOfError = Math.round(utils.convertDipToPixels(this,50f));
	+ return heightDiff > marginOfError;
	+ }
	+
	+ @Override
	+ protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
	+ super.onActivityResult(requestCode, resultCode, data);
	+ }
	}
	diff --git a/src/it/reyboz/bustorino/util/LocationCriteria.java b/src/it/reyboz/bustorino/util/LocationCriteria.java
	--- a/src/it/reyboz/bustorino/util/LocationCriteria.java
	+++ b/src/it/reyboz/bustorino/util/LocationCriteria.java
	@@ -17,13 +17,21 @@
	*/
	package it.reyboz.bustorino.util;

	+import android.location.Criteria;
	+
	/**
	* Own Location Criteria, because it's fun
	+ *
	*/
	-public class LocationCriteria {
	+public class LocationCriteria extends Criteria {
	private final float minAccuracy;
	private final int timeInterval;

	+ /**
	+ * Constructor
	+ * @param minAccuracy in meters
	+ * @param timeInterval in milliseconds
	+ */
	public LocationCriteria(float minAccuracy,int timeInterval){
	this.minAccuracy = minAccuracy;
	this.timeInterval = timeInterval;
	diff --git a/src/it/reyboz/bustorino/util/Permissions.java b/src/it/reyboz/bustorino/util/Permissions.java
	--- a/src/it/reyboz/bustorino/util/Permissions.java
	+++ b/src/it/reyboz/bustorino/util/Permissions.java
	@@ -8,8 +8,11 @@
	import android.location.LocationManager;
	import android.util.Log;

	+import androidx.activity.result.ActivityResultCaller;
	+import androidx.activity.result.ActivityResultLauncher;
	import androidx.core.app.ActivityCompat;
	import androidx.core.content.ContextCompat;
	+import androidx.fragment.app.Fragment;

	import java.util.List;

	@@ -24,6 +27,9 @@
	final static public int PERMISSION_ASKING = 11;
	final static public int PERMISSION_NEG_CANNOT_ASK = -3;

	+ final static public String[] LOCATION_PERMISSIONS={Manifest.permission.ACCESS_COARSE_LOCATION,
	+ Manifest.permission.ACCESS_FINE_LOCATION};
	+
	public static boolean anyLocationProviderMatchesCriteria(LocationManager mng, Criteria cr, boolean enabled) {
	List<String> providers = mng.getProviders(cr, enabled);
	Log.d(DEBUG_TAG, "Getting enabled location providers: ");
	@@ -32,9 +38,18 @@
	}
	return providers.size() > 0;
	}
	+ public static boolean isPermissionGranted(Context con,String permission){
	+ return ContextCompat.checkSelfPermission(con, permission) == PackageManager.PERMISSION_GRANTED;
	+ }
	+
	+ public static boolean locationPermissionGranted(Context con){
	+ return isPermissionGranted(con, Manifest.permission.ACCESS_FINE_LOCATION) &&
	+ isPermissionGranted(con, Manifest.permission.ACCESS_COARSE_LOCATION);
	+ }

	public static void assertLocationPermissions(Context con, Activity activity) {
	- if(ContextCompat.checkSelfPermission(con, Manifest.permission.ACCESS_FINE_LOCATION)!= PackageManager.PERMISSION_GRANTED){
	+ if(!isPermissionGranted(con, Manifest.permission.ACCESS_FINE_LOCATION) \|\|
	+ !isPermissionGranted(con,Manifest.permission.ACCESS_COARSE_LOCATION)){
	ActivityCompat.requestPermissions(activity,new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, PERMISSION_REQUEST_POSITION);
	}
	}

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