Android : Piano

Créer un Piano

1.Layout

 <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:background="#9C27B0">
     <TextView
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:text="Piano"
         android:layout_weight="5"
         android:textColor="@color/white"
         android:textSize="35dp"
         android:gravity="center"
         android:fontFamily="cursive"
         android:background="#9C27B0"/>
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:background="#9C27B0"
            android:orientation="horizontal">
            <ImageButton
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginRight="1dp"
                android:layout_weight="1"
                android:id="@+id/pianokey1"
                android:background="#ff00FF"
                />
            <ImageButton
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginRight="1dp"
                android:layout_weight="1"
                android:id="@+id/pianokey2"
                android:background="#ee00FF"
                />
            <ImageButton
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginRight="1dp"
                android:layout_weight="1"
                android:id="@+id/pianokey3"
                android:background="#dd00FF"
                />
            <ImageButton
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginRight="1dp"
                android:layout_weight="1"
                android:id="@+id/pianokey4"
                android:background="#cc00FF"
                />
            <ImageButton
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginRight="1dp"
                android:layout_weight="1"
                android:id="@+id/pianokey5"
                android:background="#BB00FF"
                />
            <ImageButton
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginRight="1dp"
                android:layout_weight="1"
                android:id="@+id/pianokey6"
                android:background="#aa00FF"
                />
            <ImageButton
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginRight="1dp"
                android:layout_weight="1"
                android:id="@+id/pianokey7"
                android:background="#9900FF"
                />
            <ImageButton
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginRight="1dp"
                android:layout_weight="1"
                android:id="@+id/pianokey8"
                android:background="#8800FF"
                />
            <ImageButton
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginRight="1dp"
                android:layout_weight="1"
                android:id="@+id/pianokey9"
                android:background="#7700FF"
                />
            <ImageButton
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginRight="1dp"
                android:layout_weight="1"
                android:id="@+id/pianokey10"
                android:background="#6600FF"
                />
            <ImageButton
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginRight="1dp"
                android:layout_weight="1"
                android:id="@+id/pianokey11"
                android:background="#5500FF"
                />
            <ImageButton
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginRight="1dp"
                android:layout_weight="1"
                android:id="@+id/pianokey12"
                android:background="#4400FF"
                />
            <ImageButton
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_marginRight="1dp"
                android:layout_weight="1"
                android:id="@+id/pianokey13"
                android:background="#3300FF"
                />
            <ImageButton
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:layout_marginRight="1dp"
                android:id="@+id/pianokey14"
                android:background="#2200FF"
                />
            <ImageButton
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:id="@+id/pianokey15"
                android:background="#1100FF"
                />

        </LinearLayout>
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:background="#FFC107"
            android:layout_weight="5">
            <Button
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_weight="5"
                android:text="Play/Pause"/>
        </LinearLayout>

    </LinearLayout>

2.Java

package com.example.applicationcours;

import androidx.appcompat.app.AppCompatActivity;

import android.media.MediaPlayer;
import android.media.MicrophoneDirection;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageButton;

import java.io.IOException;

public class PianoApp extends AppCompatActivity implements View.OnClickListener {
ImageButton[]imgButton=new ImageButton[15];
int[]notes={R.raw.a0,R.raw.a1,
           R.raw.b0,R.raw.b1,R.raw.b2,
           R.raw.c0,R.raw.c2,
           R.raw.d1,R.raw.d2,
           R.raw.e0,R.raw.e2,
           R.raw.g0,R.raw.g2,
           R.raw.f0,R.raw.f2
};
int positionClique=0;
MediaPlayer player=new MediaPlayer();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_piano_app);
        for(int i=0;i<15;i++)
        {
            int id = getResources().getIdentifier("pianokey"+(i+1), "id", getPackageName());
            imgButton[i]=findViewById(id);
        }


        //ecoutez les boutons
        for(int i=0;i<15;i++)
        {
            imgButton[i].setOnClickListener(this);
        }


        //lancer un greeting sound
        player=MediaPlayer.create(this,R.raw.win);
        player.start();
    }

    @Override
    public void onClick(View view) {
       //chercher sur key buton on a cliqué
        for(int i=0;i<15;i++) {
            if (view.getId() ==imgButton[i].getId())
            {
                positionClique=i;
                player.stop();
                player=MediaPlayer.create(this,notes[positionClique]);
                player.start();


            }
        }
    }
}