Un seul item s'affiche dans ma listView, Bluetooth.

Bonjour ! J'aimera récupérer les périphériques bluetooth disponible dans une listview, cela marche, mais malheureusement si 2 appareils sont dipopnible le deuxième écrase le premier.. en gros la liste est la, mais c'est comme s'il y avais un simple textview. Voici mon code :

Code:

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public class Bluetooth extends AppCompatActivity {
 
    final ListView Deviceslist = (ListView)findViewById(R.id.listView1);
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_bluetooth);
        ArrayAdapter<String> btArrayAdapter = new ArrayAdapter<String>(Bluetooth.this, android.R.layout.simple_list_item_1);
        final Button scanb = (Button)findViewById(R.id.button);
        final BluetoothAdapter bluetoothAdapter =
                BluetoothAdapter.getDefaultAdapter();
 
        scanb.setOnClickListener(new View.OnClickListener()
        {
            public void onClick(View v)
            {
                ArrayAdapter<String> btArrayAdapter = new ArrayAdapter<String>(Bluetooth.this, android.R.layout.simple_list_item_1);
                btArrayAdapter.clear();
                bluetoothAdapter.startDiscovery();
                Toast.makeText(Bluetooth.this, "Recherche en cours, merci de patienter...", Toast.LENGTH_LONG).show();
                Deviceslist.setAdapter(btArrayAdapter);
 
            }
        });
 
        registerReceiver(FoundReceiver, new IntentFilter(BluetoothDevice.ACTION_FOUND));
 
 
    }
    @Override
    protected void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        unregisterReceiver(FoundReceiver);
    }
 
    private final BroadcastReceiver FoundReceiver = new BroadcastReceiver(){
        @Override
        public void onReceive(Context context, Intent intent) {
 
            final ListView Deviceslist = (ListView)findViewById(R.id.listView1);
            // TODO Auto-generated method stub
            ArrayList<String> mDeviceList = new ArrayList<String>();
            String action = intent.getAction();
 
            if(BluetoothDevice.ACTION_FOUND.equals(action)) {
                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                mDeviceList.add(device.getName()+ "\n" + device.getAddress() );
                Deviceslist.setAdapter(new ArrayAdapter<String>(Bluetooth.this,android.R.layout.simple_list_item_1, mDeviceList));
                Toast.makeText(Bluetooth.this, "Appareil(s) trouvé(s).", Toast.LENGTH_LONG).show();
            }
        }};
 
 
}

Merci à vous !