spinner首条不显示

来源：互联网发布：材料仿真软件 vasp 编辑：程序博客网时间：2024/06/05 10:14

开发中总有那么一些变态的需求，比如这个，spinner默认是没有选中的状态，下拉的首条是一条提示。

自己写了一个adapter，然后做了一些判断，如果有遇到这样问题的可以试试我这个demo

public class SpinnerAdapter extends BaseAdapter {    List<String> list = new ArrayList<>();    Context context;    public SpinnerAdapter(List<String> list, Context context) {        this.list = list;        this.context = context;    }    @Override    public int getCount() {        return list.size();    }    @Override    public Object getItem(int position) {        return list.get(position);    }    @Override    public long getItemId(int position) {        return position;    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {        convertView = LayoutInflater.from(context).inflate(R.layout.spinner_item, null);        TextView textView = (TextView) convertView.findViewById(R.id.name);        textView.setText(list.get(position));        if (0 == position) {            textView.setTextColor(context.getResources().getColor(R.color.gray));        }        return convertView;    }}

spinner主要是在这儿加个逻辑判断

my_spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {    @Override    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {        if (position==0){            view.setVisibility(View.INVISIBLE);        }else {            Toast.makeText(MainActivity.this,list.get(position),Toast.LENGTH_SHORT).show();        }    }    @Override    public void onNothingSelected(AdapterView<?> parent) {    }});

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源码下载地址：

http://download.csdn.net/detail/royal1prince/9733670

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