每次构建视图时都会调用setOnCheckedChangeListener

Question

我有一个类Devices，它使用setChecked(boolean)存储Switch的已检查状态，并通过isChecked()方法获取。

使用它，切换后我会保持切换状态一次。

但是，如果我将开关的状态更改为ON，则每次向下滚动并返回到开关时，都会调用setOnCheckedChangeListener。我该如何防止这种情况？

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        View row = convertView;
        DeviceHolder holder = null;
        Devices devices = list.get(position);
        String id = devices.id;

        LayoutInflater inflater = ((Activity) context).getLayoutInflater();
        row = inflater.inflate(layoutResourceId, parent, false);

        holder = new DeviceHolder();
        holder.devTxt = (TextView) row.findViewById(R.id.devdesc);
        holder.nameTxt = (TextView) row.findViewById(R.id.devname);
        holder.toggleSwitch = (Switch) row.findViewById(R.id.toggleswitch);
        holder.txt = (TextView) row.findViewById(R.id.debug);
        final int i=id;

        final Switch tswitch = holder.toggleSwitch;
        holder.toggleSwitch.setOnCheckedChangeListener(new OnCheckedChangeListener() {
                    public void onCheckedChanged(CompoundButton buttonView,
                            boolean isChecked) {
                      //Comes here every time I scroll to a button that is ON
                        Control._service.write(i);
                        list.get(position).setChecked(tswitch.isChecked());
                    }
                });

        holder.devTxt.setText(devices.dev);
        holder.nameTxt.setText(devices.name);
        holder.txt.setText(id);
        if (tswitch.isChecked() != devices.isChecked())
            holder.toggleSwitch.setChecked(devices.isChecked());

        return row;
    }