Native.js如何访问蓝牙Bluetooth

  var main, Context, BluetoothManager, BluetoothAdapter, BManager, BAdapter;
        document.addEventListener('plusready', function(){
            main = plus.android.runtimeMainActivity();
                        /*这是成功的*/
            BluetoothAdapter = plus.android.importClass("android.bluetooth.BluetoothAdapter");
            BAdapter = BluetoothAdapter.getDefaultAdapter();
             /*这是成功的*/

                          /*通过BluetoothManager这是失败的*/
            /*Context = plus.android.importClass("android.content.Context");
            BluetoothManager = plus.android.importClass("android.bluetooth.BluetoothManager");
            BManager = main.getSystemService(Context.BLUETOOTH_SERVICE);           
            BAdapter = BManager.getAdapter();*/
                         /*通过BluetoothManager这是失败的*/

            if(!BAdapter.isEnabled()) {
                BAdapter.enable();
            }      
        });

通过BluetoothManager获取bluetoothAdpter，返回的是[object object]JS对象，所以运行到BAdapter.isEnabled()会提示不存在该方法。