BluetoothAdapter.ACTION_FOUND 未定义

ACTION_FOUND 不在BluetoothAdapter类里面，而是在BluetoothDevice里面的常量。
/***
 *注册一个广播,已封装到BluetoothManager类
 */
private BroadcastReceiver bluetoothReceiver = new BroadcastReceiver() {
    @Override
    @RequiresPermission(value = "android.permission.BLUETOOTH_CONNECT")
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        if (BluetoothAdapter.ACTION_STATE_CHANGED.equals(action)) {
            int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR);
            switch (state) {
                case BluetoothAdapter.STATE_ON:
                    Log.d("BluetoothReceiver", "蓝牙已开启");
                    break;
                case BluetoothAdapter.STATE_OFF:
                    Log.d("BluetoothReceiver", "蓝牙已关闭");
                    break;
                case BluetoothAdapter.STATE_TURNING_ON:
                    Log.d("BluetoothReceiver", "蓝牙正在开启");
                    break;
                case BluetoothAdapter.STATE_TURNING_OFF:
                    Log.d("BluetoothReceiver", "蓝牙正在关闭");
                    break;
            }
        } else if (BluetoothAdapter.ACTION_DISCOVERY_STARTED.equals(action)) {
            Log.d("Bluetooth", "蓝牙设备搜索开始");
        } else if (BluetoothDevice.ACTION_FOUND.equals(action)) {
            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
            String deviceName = device.getName();
            String deviceAddress = device.getAddress();
            Log.d("Bluetooth", "发现设备: " + deviceName + " 地址: " + deviceAddress);
        }
    }
};