jazari-akuna/android_compass.java

## android_compass.java
/*
Programmation Android 2018-2019
ECE Paris - ING5 APP Systèmes Embarqué

TP6 et TP7
Application - Boussole
 */

package com.example.p095010.tp_android_boussole;

import android.Manifest;
import android.content.ContentValues;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.hardware.GeomagneticField;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.StrictMode;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Switch;
import android.widget.TextView;
import android.widget.Toast;

import org.xml.sax.InputSource;

import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Scanner;

public class MainActivity extends AppCompatActivity {
    double lati;
    double longi;

    float[] accelerof = new float[3];
    float[] magneticf = new float[3];
    float[] resultMatrix = new float[9];
    float[] orientation = new float[3];

    //declinaison magnétique :
    //on utilise : http://www.geomag.nrcan.gc.ca/calc/mdcal-fr.php
    //qui nous renvoie la déclinaison concernée en fonction du lieu.

    //Par exemple :
    // http://www.geomag.nrcan.gc.ca/calc/mdcal-r-fr.php?date=2018-10-20&latitude=48.846834&latitude_direction=1&longitude=2.3958577&longitude_direction=1

    boolean passed = false;
    Float declinaison = (float)0;

    public float getDeclinaison(){
        String declinaisonstr = "0";
        //Date d'aujourdh'ui sous format qu'on veut
        String format = "yyyy-MM-dd";
        SimpleDateFormat formater = new SimpleDateFormat(format);

        Date date = new Date();
        String date_today = formater.format(date);

        //Etat internet
        boolean internet_status = false;

        //Vérification de disponibilité internet
        if (InternetCheck.isNetworkAvailable(getApplicationContext())){
            System.out.println("Statut de Votre internet : Disponible");
            internet_status = true;
        }else {
            System.out.println("Statut de Votre internet : Non Disponible");
            internet_status = false;
        }

        //You should almost always run network operations on a thread or as an asynchronous task.
        //But it is possible to remove this restriction and you override the default behavior,
        // if you are willing to accept the consequences.
        StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
        StrictMode.setThreadPolicy(policy);

        //classe fille de SQLiteOpenHelper
        filleSQL SQLite = new filleSQL(this, "decli.db", null, 1);
        //base de données
        SQLiteDatabase bdd = SQLite.getWritableDatabase();

        ContentValues values = new ContentValues();
        //si l'internet est disponible
        if(internet_status){

            //RAZ de la BDD
            SQLite.onUpgrade(bdd,1,1);

            //URL du site
            String urlstr = "http://www.geomag.nrcan.gc.ca/calc/mdcal-r-fr.php?date="+date_today+"&latitude="+lati+"&latitude_direction=1&longitude="+longi+"&longitude_direction=1";
            URL url = null;
            try {
                url = new URL(urlstr);
            } catch (MalformedURLException e) {
                e.printStackTrace();
            }

            String out = null;
            try {
                out = new Scanner(url.openStream(), "UTF-8").useDelimiter("\\A").next();
            } catch (IOException e) {
                e.printStackTrace();
            }

            String out2[] = out.split("<p>D&eacute;clinaison magn&eacute;tique: ");

            String dec1 = out2[1].split("</p>")[0].split("&deg; ")[0];
            String dec2 = out2[1].split("</p>")[0].split("&deg; ")[1].split(",")[0];
            String dec3 = out2[1].split("</p>")[0].split("&deg; ")[1].split(",")[1].split("' ")[0];
            String dir = out2[1].split("</p>")[0].split("&deg; ")[1].split(",")[1].split("' ")[1];

            System.out.println("URL content : ");
            System.out.println(dec1 + " " + dec2 + " " + dec3 + " " + dir);

            declinaisonstr = dec1+"."+dec2;

            values = new ContentValues();
            values.put("declinaison", Float.valueOf(declinaisonstr));
            bdd.insert("table_declinaison",null,values);

            System.out.println("Declinaison : "+Float.valueOf(declinaisonstr)+" degres");
            return Float.valueOf(declinaisonstr);
        }
        else{
            Cursor cursor = bdd.query("table_declinaison", new String[]{"declinaison"}, null, null, null, null, null);

            cursor.moveToFirst();
            if(cursor.getCount()==0){
                //Si la BDD est vide retourner 0 et déselectionner
                Switch declibtn = (Switch) findViewById(R.id.decli);
                declibtn.setChecked(false);
                //Afficher un message
                Toast.makeText(this, "Base de données vide", Toast.LENGTH_SHORT).show();
                return (float)0;
            }
            else{
                Float bdd_float = (float)0;
                //Si la BDD n'est pas vide, on récupére
                cursor.moveToFirst();
                while (!cursor.isAfterLast()) {
                    bdd_float= cursor.getFloat(0);
                    cursor.moveToNext();
                }
                cursor.close();
                //Afficher un message
                Toast.makeText(this, "Ancienne valeur de déclinaison récupérée", Toast.LENGTH_SHORT).show();
                return bdd_float;
            }

        }
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //Bouton Droite pour tourner la boussole à droite de 30 degrés
        Button btnd = (Button) findViewById(R.id.btndroite);
        btnd.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                ImageView boussole = (ImageView) findViewById(R.id.boussole);
                boussole.setRotation(boussole.getRotation() + 30);
            }
        });

        //Bouton Droite pour tourner la boussole à gauche de 30 degrés
        Button btng = (Button) findViewById(R.id.btngauche);
        btng.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                ImageView boussole = (ImageView) findViewById(R.id.boussole);
                boussole.setRotation(boussole.getRotation() - 30);
            }
        });


        TextView txtlong = (TextView) findViewById(R.id.longi);
        TextView txtlat = (TextView) findViewById(R.id.lati);

        txtlat.setText("Latitude : ");
        txtlong.setText("Longitude : ");

        //Récupérer longitude et latitude depuis Location Manager
        LocationManager lm = (LocationManager) getSystemService(this.LOCATION_SERVICE);

        //Besoin de <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
        //Dans Manifest pour autoriser

        //Listener pour surveiller et remettre à jour les textes
        LocationListener loclisten = new LocationListener() {
            @Override
            public void onLocationChanged(Location location) {
                TextView txtlong = (TextView) findViewById(R.id.longi);
                TextView txtlat = (TextView) findViewById(R.id.lati);

                lati = location.getLatitude();
                txtlat.setText("Latitude : "+ String.valueOf(lati));
                longi = location.getLongitude();
                txtlong.setText("Longitude : "+ String.valueOf(longi));
            }

            @Override
            public void onStatusChanged(String s, int i, Bundle bundle) {

            }

            @Override
            public void onProviderEnabled(String s) {

            }

            @Override
            public void onProviderDisabled(String s) {

            }
        };


        //choix de module : GPS ou Network
        //manifest :
        //<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
        //<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
        boolean gps_enabled = false;
        boolean network_enabled = false;

        gps_enabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
        network_enabled = lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);

        Location net_loc = null, gps_loc = null, finalLoc = null;

        try {
            if (gps_enabled){
                //demande de droit
                if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                    // TODO: Consider calling
                    //    ActivityCompat#requestPermissions
                    // here to request the missing permissions, and then overriding
                    //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
                    //                                          int[] grantResults)
                    // to handle the case where the user grants the permission. See the documentation
                    // for ActivityCompat#requestPermissions for more details.
                    ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1340);
                }
                gps_loc = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
                lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, loclisten);
            }

            if (network_enabled){
                //demande de droit
                if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                    // TODO: Consider calling
                    //    ActivityCompat#requestPermissions
                    // here to request the missing permissions, and then overriding
                    //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
                    //                                          int[] grantResults)
                    // to handle the case where the user grants the permission. See the documentation
                    // for ActivityCompat#requestPermissions for more details.
                    ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1340);
                }
                net_loc = lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
                lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, loclisten);
            }

            if (gps_loc != null && net_loc != null) {
                if (gps_loc.getAccuracy() > net_loc.getAccuracy())
                    finalLoc = net_loc;
                else
                    finalLoc = gps_loc;
            } else {
                if (gps_loc != null) {
                    finalLoc = gps_loc;
                } else if (net_loc != null) {
                    finalLoc = net_loc;
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        //première mise à jour
        if (finalLoc != null) {
            lati = finalLoc.getLatitude();
            txtlat.setText("Latitude : "+ String.valueOf(lati));
            longi = finalLoc.getLongitude();
            txtlong.setText("Longitude : "+ String.valueOf(longi));
        }


        //SensorManager
        //manifest :
        //<uses-feature android:name="android.hardware.sensor.accelerometer" android:required="true" />
        //<uses-feature android:name="android.hardware.sensor.compass" android:required="true" />
        SensorManager sensman = (SensorManager)getSystemService(this.SENSOR_SERVICE);

        List listSensor = sensman.getSensorList(Sensor.TYPE_ALL);

        List listSensorType = new ArrayList();

        //Lister tous les capteurs
        for(int i=0; i<listSensor.size(); i++){
            listSensorType.add(listSensor.get(i).toString());
            System.out.println(listSensor.get(i).toString()); //0accelel et 3magnetic
        }

        //Declarer les deux sensors
        Sensor accelero = sensman.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        Sensor magnetic = sensman.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);

        //Listener des sensors
        SensorEventListener sensoreventlisten = new SensorEventListener() {

            @Override
            public void onSensorChanged(SensorEvent sensorEvent) {
                if (sensorEvent.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
                    //stocker les valeurs reçues d'accélérometre
                    accelerof=sensorEvent.values;

                } else if (sensorEvent.sensor.getType() == Sensor.TYPE_MAGNETIC_FIELD) {
                    //stocker les valeurs reçues de magnétometre
                    magneticf = sensorEvent.values;
                }

                //format avec 5 digit
                DecimalFormat df = new DecimalFormat();
                df.setMaximumFractionDigits(5);

                //Affichage Accelerometre
                TextView txtaccel = (TextView) findViewById(R.id.txtaccel);
                txtaccel.setText("Accelerometre : "+df.format(accelerof[0])+" / "+df.format(accelerof[1])+" / "+df.format(accelerof[2]));

                //Affichage Magnetometre
                TextView txtmagne = (TextView) findViewById(R.id.txtmagne);
                txtmagne.setText("Magnetometre : "+df.format(magneticf[0])+" / "+df.format(magneticf[1])+" / "+df.format(magneticf[2]));

                //calcul d' "Orientation" depuis l'accélération et champs magnétique
                SensorManager.getRotationMatrix(resultMatrix, null, accelerof, magneticf);
                SensorManager.getOrientation(resultMatrix, orientation);

                //Affichage Orientation
                TextView txtori = (TextView) findViewById(R.id.txtori);
                txtori.setText("Orientation : "+df.format(orientation[0])+" / "+df.format(orientation[1])+" / "+df.format(orientation[2]));

                //calcul d'Orientation d'image à affecter
                float degree = -orientation[0] * 360 / (2 * 3.14159f);
                degree = (float)(degree+360)%360;

                //Affecter l'orientation calculée
                ImageView boussole = (ImageView) findViewById(R.id.boussole);


                //declinaison magnétique :
                //on utilise : http://www.geomag.nrcan.gc.ca/calc/mdcal-fr.php
                //qui nous renvoie la déclinaison concernée en fonction du lieu.

                //Par exemple :
                // http://www.geomag.nrcan.gc.ca/calc/mdcal-r-fr.php?date=2018-10-20&latitude=48.846834&latitude_direction=1&longitude=2.3958577&longitude_direction=1

                //Switch Déclinaison (Nord Réel)
                Switch declibtn = (Switch) findViewById(R.id.decli);

                //Modifier declinaison une seule fois quand le Switch est coché
                if(declibtn.isChecked()&&!passed)//Nord Réel?
                {
                    passed = true;
                    declinaison = getDeclinaison();
                }

                if(!declibtn.isChecked()){
                    passed = false;
                    declinaison = (float)0;
                }
                degree -= 360-declinaison;
                degree = (float)(degree+360)%360;

                float ecart = boussole.getRotation()-degree;

                if((ecart)<0)ecart*=-1;

                //pour la STABILITE, si l'écart est plus de 2 degrés on remet à jour la rotation d'image
                if(ecart>2){
                        boussole.setRotation((int)degree);

                        //Affichage en texte
                        TextView angle = (TextView) findViewById(R.id.angle);
                        angle.setText((int)(360-degree) + "°");
                }
            }

            @Override
            public void onAccuracyChanged(Sensor sensor, int i) {

            }
        };

        //Ajouter les sensors dans Listener
        sensman.registerListener(sensoreventlisten, accelero, SensorManager.SENSOR_DELAY_NORMAL);
        sensman.registerListener(sensoreventlisten, magnetic, SensorManager.SENSOR_DELAY_NORMAL);
    }
}
	/*
	Programmation Android 2018-2019
	ECE Paris - ING5 APP Systèmes Embarqué

	TP6 et TP7
	Application - Boussole
	*/

	package com.example.p095010.tp_android_boussole;

	import android.Manifest;
	import android.content.ContentValues;
	import android.content.pm.PackageManager;
	import android.database.Cursor;
	import android.database.sqlite.SQLiteDatabase;
	import android.hardware.GeomagneticField;
	import android.hardware.Sensor;
	import android.hardware.SensorEvent;
	import android.hardware.SensorEventListener;
	import android.hardware.SensorManager;
	import android.location.Location;
	import android.location.LocationListener;
	import android.location.LocationManager;
	import android.os.StrictMode;
	import android.support.v4.app.ActivityCompat;
	import android.support.v7.app.AppCompatActivity;
	import android.os.Bundle;
	import android.view.View;
	import android.widget.ArrayAdapter;
	import android.widget.Button;
	import android.widget.ImageView;
	import android.widget.Switch;
	import android.widget.TextView;
	import android.widget.Toast;

	import org.xml.sax.InputSource;

	import java.io.IOException;
	import java.io.InputStream;
	import java.net.MalformedURLException;
	import java.net.URL;
	import java.text.DecimalFormat;
	import java.text.SimpleDateFormat;
	import java.util.ArrayList;
	import java.util.Date;
	import java.util.List;
	import java.util.Scanner;

	public class MainActivity extends AppCompatActivity {
	double lati;
	double longi;

	float[] accelerof = new float[3];
	float[] magneticf = new float[3];
	float[] resultMatrix = new float[9];
	float[] orientation = new float[3];

	//declinaison magnétique :
	//on utilise : http://www.geomag.nrcan.gc.ca/calc/mdcal-fr.php
	//qui nous renvoie la déclinaison concernée en fonction du lieu.

	//Par exemple :
	// http://www.geomag.nrcan.gc.ca/calc/mdcal-r-fr.php?date=2018-10-20&latitude=48.846834&latitude_direction=1&longitude=2.3958577&longitude_direction=1

	boolean passed = false;
	Float declinaison = (float)0;

	public float getDeclinaison(){
	String declinaisonstr = "0";
	//Date d'aujourdh'ui sous format qu'on veut
	String format = "yyyy-MM-dd";
	SimpleDateFormat formater = new SimpleDateFormat(format);

	Date date = new Date();
	String date_today = formater.format(date);

	//Etat internet
	boolean internet_status = false;

	//Vérification de disponibilité internet
	if (InternetCheck.isNetworkAvailable(getApplicationContext())){
	System.out.println("Statut de Votre internet : Disponible");
	internet_status = true;
	}else {
	System.out.println("Statut de Votre internet : Non Disponible");
	internet_status = false;
	}

	//You should almost always run network operations on a thread or as an asynchronous task.
	//But it is possible to remove this restriction and you override the default behavior,
	// if you are willing to accept the consequences.
	StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
	StrictMode.setThreadPolicy(policy);

	//classe fille de SQLiteOpenHelper
	filleSQL SQLite = new filleSQL(this, "decli.db", null, 1);
	//base de données
	SQLiteDatabase bdd = SQLite.getWritableDatabase();

	ContentValues values = new ContentValues();
	//si l'internet est disponible
	if(internet_status){

	//RAZ de la BDD
	SQLite.onUpgrade(bdd,1,1);

	//URL du site
	String urlstr = "http://www.geomag.nrcan.gc.ca/calc/mdcal-r-fr.php?date="+date_today+"&latitude="+lati+"&latitude_direction=1&longitude="+longi+"&longitude_direction=1";
	URL url = null;
	try {
	url = new URL(urlstr);
	} catch (MalformedURLException e) {
	e.printStackTrace();
	}

	String out = null;
	try {
	out = new Scanner(url.openStream(), "UTF-8").useDelimiter("\\A").next();
	} catch (IOException e) {
	e.printStackTrace();
	}

	String out2[] = out.split("<p>Déclinaison magnétique: ");

	String dec1 = out2[1].split("</p>")[0].split("° ")[0];
	String dec2 = out2[1].split("</p>")[0].split("° ")[1].split(",")[0];
	String dec3 = out2[1].split("</p>")[0].split("° ")[1].split(",")[1].split("' ")[0];
	String dir = out2[1].split("</p>")[0].split("° ")[1].split(",")[1].split("' ")[1];

	System.out.println("URL content : ");
	System.out.println(dec1 + " " + dec2 + " " + dec3 + " " + dir);

	declinaisonstr = dec1+"."+dec2;

	values = new ContentValues();
	values.put("declinaison", Float.valueOf(declinaisonstr));
	bdd.insert("table_declinaison",null,values);

	System.out.println("Declinaison : "+Float.valueOf(declinaisonstr)+" degres");
	return Float.valueOf(declinaisonstr);
	}
	else{
	Cursor cursor = bdd.query("table_declinaison", new String[]{"declinaison"}, null, null, null, null, null);

	cursor.moveToFirst();
	if(cursor.getCount()==0){
	//Si la BDD est vide retourner 0 et déselectionner
	Switch declibtn = (Switch) findViewById(R.id.decli);
	declibtn.setChecked(false);
	//Afficher un message
	Toast.makeText(this, "Base de données vide", Toast.LENGTH_SHORT).show();
	return (float)0;
	}
	else{
	Float bdd_float = (float)0;
	//Si la BDD n'est pas vide, on récupére
	cursor.moveToFirst();
	while (!cursor.isAfterLast()) {
	bdd_float= cursor.getFloat(0);
	cursor.moveToNext();
	}
	cursor.close();
	//Afficher un message
	Toast.makeText(this, "Ancienne valeur de déclinaison récupérée", Toast.LENGTH_SHORT).show();
	return bdd_float;
	}

	}
	}

	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_main);

	//Bouton Droite pour tourner la boussole à droite de 30 degrés
	Button btnd = (Button) findViewById(R.id.btndroite);
	btnd.setOnClickListener(new View.OnClickListener() {
	@Override
	public void onClick(View view) {
	ImageView boussole = (ImageView) findViewById(R.id.boussole);
	boussole.setRotation(boussole.getRotation() + 30);
	}
	});

	//Bouton Droite pour tourner la boussole à gauche de 30 degrés
	Button btng = (Button) findViewById(R.id.btngauche);
	btng.setOnClickListener(new View.OnClickListener() {
	@Override
	public void onClick(View view) {
	ImageView boussole = (ImageView) findViewById(R.id.boussole);
	boussole.setRotation(boussole.getRotation() - 30);
	}
	});


	TextView txtlong = (TextView) findViewById(R.id.longi);
	TextView txtlat = (TextView) findViewById(R.id.lati);

	txtlat.setText("Latitude : ");
	txtlong.setText("Longitude : ");

	//Récupérer longitude et latitude depuis Location Manager
	LocationManager lm = (LocationManager) getSystemService(this.LOCATION_SERVICE);

	//Besoin de <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
	//Dans Manifest pour autoriser

	//Listener pour surveiller et remettre à jour les textes
	LocationListener loclisten = new LocationListener() {
	@Override
	public void onLocationChanged(Location location) {
	TextView txtlong = (TextView) findViewById(R.id.longi);
	TextView txtlat = (TextView) findViewById(R.id.lati);

	lati = location.getLatitude();
	txtlat.setText("Latitude : "+ String.valueOf(lati));
	longi = location.getLongitude();
	txtlong.setText("Longitude : "+ String.valueOf(longi));
	}

	@Override
	public void onStatusChanged(String s, int i, Bundle bundle) {

	}

	@Override
	public void onProviderEnabled(String s) {

	}

	@Override
	public void onProviderDisabled(String s) {

	}
	};


	//choix de module : GPS ou Network
	//manifest :
	//<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
	//<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
	boolean gps_enabled = false;
	boolean network_enabled = false;

	gps_enabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
	network_enabled = lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);

	Location net_loc = null, gps_loc = null, finalLoc = null;

	try {
	if (gps_enabled){
	//demande de droit
	if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
	// TODO: Consider calling
	// ActivityCompat#requestPermissions
	// here to request the missing permissions, and then overriding
	// public void onRequestPermissionsResult(int requestCode, String[] permissions,
	// int[] grantResults)
	// to handle the case where the user grants the permission. See the documentation
	// for ActivityCompat#requestPermissions for more details.
	ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1340);
	}
	gps_loc = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
	lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, loclisten);
	}

	if (network_enabled){
	//demande de droit
	if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
	// TODO: Consider calling
	// ActivityCompat#requestPermissions
	// here to request the missing permissions, and then overriding
	// public void onRequestPermissionsResult(int requestCode, String[] permissions,
	// int[] grantResults)
	// to handle the case where the user grants the permission. See the documentation
	// for ActivityCompat#requestPermissions for more details.
	ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1340);
	}
	net_loc = lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
	lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, loclisten);
	}

	if (gps_loc != null && net_loc != null) {
	if (gps_loc.getAccuracy() > net_loc.getAccuracy())
	finalLoc = net_loc;
	else
	finalLoc = gps_loc;
	} else {
	if (gps_loc != null) {
	finalLoc = gps_loc;
	} else if (net_loc != null) {
	finalLoc = net_loc;
	}
	}
	} catch (Exception e) {
	e.printStackTrace();
	}

	//première mise à jour
	if (finalLoc != null) {
	lati = finalLoc.getLatitude();
	txtlat.setText("Latitude : "+ String.valueOf(lati));
	longi = finalLoc.getLongitude();
	txtlong.setText("Longitude : "+ String.valueOf(longi));
	}


	//SensorManager
	//manifest :
	//<uses-feature android:name="android.hardware.sensor.accelerometer" android:required="true" />
	//<uses-feature android:name="android.hardware.sensor.compass" android:required="true" />
	SensorManager sensman = (SensorManager)getSystemService(this.SENSOR_SERVICE);

	List listSensor = sensman.getSensorList(Sensor.TYPE_ALL);

	List listSensorType = new ArrayList();

	//Lister tous les capteurs
	for(int i=0; i<listSensor.size(); i++){
	listSensorType.add(listSensor.get(i).toString());
	System.out.println(listSensor.get(i).toString()); //0accelel et 3magnetic
	}

	//Declarer les deux sensors
	Sensor accelero = sensman.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
	Sensor magnetic = sensman.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);

	//Listener des sensors
	SensorEventListener sensoreventlisten = new SensorEventListener() {

	@Override
	public void onSensorChanged(SensorEvent sensorEvent) {
	if (sensorEvent.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {
	//stocker les valeurs reçues d'accélérometre
	accelerof=sensorEvent.values;

	} else if (sensorEvent.sensor.getType() == Sensor.TYPE_MAGNETIC_FIELD) {
	//stocker les valeurs reçues de magnétometre
	magneticf = sensorEvent.values;
	}

	//format avec 5 digit
	DecimalFormat df = new DecimalFormat();
	df.setMaximumFractionDigits(5);

	//Affichage Accelerometre
	TextView txtaccel = (TextView) findViewById(R.id.txtaccel);
	txtaccel.setText("Accelerometre : "+df.format(accelerof[0])+" / "+df.format(accelerof[1])+" / "+df.format(accelerof[2]));

	//Affichage Magnetometre
	TextView txtmagne = (TextView) findViewById(R.id.txtmagne);
	txtmagne.setText("Magnetometre : "+df.format(magneticf[0])+" / "+df.format(magneticf[1])+" / "+df.format(magneticf[2]));

	//calcul d' "Orientation" depuis l'accélération et champs magnétique
	SensorManager.getRotationMatrix(resultMatrix, null, accelerof, magneticf);
	SensorManager.getOrientation(resultMatrix, orientation);

	//Affichage Orientation
	TextView txtori = (TextView) findViewById(R.id.txtori);
	txtori.setText("Orientation : "+df.format(orientation[0])+" / "+df.format(orientation[1])+" / "+df.format(orientation[2]));

	//calcul d'Orientation d'image à affecter
	float degree = -orientation[0] * 360 / (2 * 3.14159f);
	degree = (float)(degree+360)%360;

	//Affecter l'orientation calculée
	ImageView boussole = (ImageView) findViewById(R.id.boussole);


	//declinaison magnétique :
	//on utilise : http://www.geomag.nrcan.gc.ca/calc/mdcal-fr.php
	//qui nous renvoie la déclinaison concernée en fonction du lieu.

	//Par exemple :
	// http://www.geomag.nrcan.gc.ca/calc/mdcal-r-fr.php?date=2018-10-20&latitude=48.846834&latitude_direction=1&longitude=2.3958577&longitude_direction=1

	//Switch Déclinaison (Nord Réel)
	Switch declibtn = (Switch) findViewById(R.id.decli);

	//Modifier declinaison une seule fois quand le Switch est coché
	if(declibtn.isChecked()&&!passed)//Nord Réel?
	{
	passed = true;
	declinaison = getDeclinaison();
	}

	if(!declibtn.isChecked()){
	passed = false;
	declinaison = (float)0;
	}
	degree -= 360-declinaison;
	degree = (float)(degree+360)%360;

	float ecart = boussole.getRotation()-degree;

	if((ecart)<0)ecart*=-1;

	//pour la STABILITE, si l'écart est plus de 2 degrés on remet à jour la rotation d'image
	if(ecart>2){
	boussole.setRotation((int)degree);

	//Affichage en texte
	TextView angle = (TextView) findViewById(R.id.angle);
	angle.setText((int)(360-degree) + "°");
	}
	}

	@Override
	public void onAccuracyChanged(Sensor sensor, int i) {

	}
	};

	//Ajouter les sensors dans Listener
	sensman.registerListener(sensoreventlisten, accelero, SensorManager.SENSOR_DELAY_NORMAL);
	sensman.registerListener(sensoreventlisten, magnetic, SensorManager.SENSOR_DELAY_NORMAL);
	}
	}