SVP ! Spinner onItemSelected ==> MediaPlayer

Bonjour à tous et toutes ! ="D

Cela fait maintenant 4 jours que je suis bloquer avec ce Mystère ! ="(
Je recherche la méthode pour lier les différents choix du Spinner au MediaPlayer tout simplement.

SVP évitez les subtilités de code ou les demi réponse car je suis un pure novice et je ne risque pas de trouver par magie x"D. J'ai littéralement chercher PARTOUT ! comme un acharné : Tutos, Forums et autres.

Aujourd'hui j'ai eu l'idée de jeter un coup d'oeil sur GitHub afin de chercher des codes source (open source) de Lecteur Audio qui utilisent un Spinner tout comme mon App afin de trouver cette méthode mais à chaque fois c'est
==> MediaPlayer + .mp3 sur Carte SD ou encore MediaPlayer + Button en ListView pffff... <="(


Voici le XML :

<?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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/fond_voxov1"
    tools:context=".MainActivity">


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center_horizontal"
        android:orientation="vertical">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="270dp"
            android:layout_weight="1"
            android:gravity="center_vertical|center_horizontal"
            android:orientation="horizontal">

            <Spinner
                android:id="@+id/spinner_pays"
                android:layout_width="match_parent"
                android:layout_height="100dp"
                android:background="@drawable/back_btn"
                android:scrollbarSize="10dp"
                android:popupBackground="@color/transparent1"
                android:layout_weight="1"
                android:entries="@array/pays"
                android:textAlignment="center" />


        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="500dp"
            android:layout_weight="1"
            android:gravity="center_horizontal"
            android:orientation="horizontal">


            <ScrollView
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:background="@drawable/text_logo">

            </ScrollView>

        </LinearLayout>


        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="333dp"
            android:layout_weight="1"
            android:gravity="center_horizontal"
            android:orientation="vertical">


            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content">

                <TextView
                    android:id="@+id/elapsedTimeLabel"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="30dp"
                    android:layout_weight="0"
                    android:text="0:11" />

                <TextView
                    android:id="@+id/remainingTimeLabel"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="240dp"
                    android:layout_weight="0"
                    android:text="-1:49" />

            </LinearLayout>




            <SeekBar
                android:id="@+id/positionBar"
                android:layout_width="300dp"
                android:layout_height="wrap_content"/>


            <Button
                android:id="@+id/playBtn"
                android:layout_width="30dp"
                android:layout_height="30dp"
                android:background="@drawable/play"
                android:layout_marginTop="10dp"
                android:onClick="playBtnClick" />



            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_gravity="center">

                <ImageView
                    android:layout_width="20dp"
                    android:layout_height="20dp"
                    android:layout_marginTop="10dp"
                    android:src="@drawable/sound"
                    android:layout_marginLeft="20dp" />

                <SeekBar
                    android:id="@+id/volumeBar"
                    android:layout_width="250dp"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="25dp"
                    android:layout_marginVertical="15dp"
                    android:max="100"
                    android:progress="50" />

                <ImageView
                    android:layout_width="25dp"
                    android:layout_height="25dp"
                    android:layout_marginTop="10dp"
                    android:src="@drawable/sound2"/>

            </LinearLayout>

            </LinearLayout>

    </LinearLayout>

</LinearLayout>

Le MainActivity :

package be.umwami.looply;

import android.app.Activity;
import android.media.MediaPlayer;
import android.os.Handler;
import android.os.Message;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.SeekBar;
import android.widget.Spinner;
import android.widget.TextView;

import java.io.File;
import java.io.FileReader;
import java.sql.ResultSet;

import static android.media.CamcorderProfile.get;


public class  MainActivity extends AppCompatActivity {

    //Spinner
    Spinner spinner_pays;
    int currentItem = 0;




    //Eléments de l'activitée
    Button playBtn;
    SeekBar positionBar;
    SeekBar volumeBar;
    TextView elapsedTimeLabel;
    TextView remainingTimeLabel;
    MediaPlayer mp;
    int totalTime;



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

        spinner_pays = (Spinner)findViewById(R.id.spinner_pays);




        spinner_pays.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> adapterView, View view, int position, long id) {


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            }

            @Override
            public void onNothingSelected(AdapterView<?> adapterView) {

            }
        });







        //Paramètres Musique
        playBtn = (Button) findViewById(R.id.playBtn);
        elapsedTimeLabel = (TextView) findViewById(R.id.elapsedTimeLabel);
        remainingTimeLabel = (TextView) findViewById(R.id.remainingTimeLabel);

        // Media Player
        mp = MediaPlayer.create(this, R.raw.afghanistan);
        mp.setLooping(true);
        mp.seekTo(0);
        mp.setVolume(1f, 1f);
        totalTime = mp.getDuration();

        // Position Bar
        positionBar = (SeekBar) findViewById(R.id.positionBar);
        positionBar.setMax(totalTime);
        positionBar.setOnSeekBarChangeListener(
                new SeekBar.OnSeekBarChangeListener() {
                    @Override
                    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                        if (fromUser) {
                            mp.seekTo(progress);
                            positionBar.setProgress(progress);
                        }
                    }

                    @Override
                    public void onStartTrackingTouch(SeekBar seekBar) {

                    }

                    @Override
                    public void onStopTrackingTouch(SeekBar seekBar) {

                    }
                }
        );


        // Volume Bar
        volumeBar = (SeekBar) findViewById(R.id.volumeBar);
        volumeBar.setOnSeekBarChangeListener(
                new SeekBar.OnSeekBarChangeListener() {
                    @Override
                    public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                        float volumeNum = progress / 100f;
                        mp.setVolume(volumeNum, volumeNum);
                    }

                    @Override
                    public void onStartTrackingTouch(SeekBar seekBar) {

                    }

                    @Override
                    public void onStopTrackingTouch(SeekBar seekBar) {

                    }
                }
        );

        // Thread (Update positionBar & timeLabel)
        new Thread(new Runnable() {
            @Override
            public void run() {
                while (mp != null) {
                    try {
                        Message msg = new Message();
                        msg.what = mp.getCurrentPosition();
                        handler.sendMessage(msg);
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {}
                }
            }
        }).start();

    }



    private Handler handler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            int currentPosition = msg.what;
            // Update positionBar.
            positionBar.setProgress(currentPosition);

            // Update Labels.
            String elapsedTime = createTimeLabel(currentPosition);
            elapsedTimeLabel.setText(elapsedTime);

            String remainingTime = createTimeLabel(totalTime-currentPosition);
            remainingTimeLabel.setText("- " + remainingTime);
        }
    };

    public String createTimeLabel(int time) {
        String timeLabel = "";
        int min = time / 1000 / 60;
        int sec = time / 1000 % 60;

        timeLabel = min + ":";
        if (sec < 10) timeLabel += "0";
        timeLabel += sec;

        return timeLabel;
    }

    public void playBtnClick(View view) {

        if (!mp.isPlaying()) {
            // Stopping
            mp.start();
            playBtn.setBackgroundResource(R.drawable.stop);

        } else {
            // Playing
            mp.pause();
            playBtn.setBackgroundResource(R.drawable.play);
        }

    }
}

Et enfin le strings.xml où vont se trouver les noms des choix (Spinner) :

<resources>
    <string name="app_name">looply</string>

    <string-array name="pays">
        <item>Afghanistan</item>
        <item>Afrique du Sud</item>
        <item>Albanie</item>
    </string-array>
</resources>

Un Giga merci d'avance à celle ou celui qui aura la gentillesse de m'aider ! ❤ ="D