Question

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公共类MainActivity扩展了Activity {

String[] DayOfWeek = { "Select Item", "1", "2", "3", "4", "5", "6" };

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    Spinner mySpinner = (Spinner) findViewById(R.id.spinner);
    mySpinner.setAdapter(new MyCustomAdapter(MainActivity.this,
            R.layout.row, DayOfWeek));
}

public class MyCustomAdapter extends ArrayAdapter<String> {

    public MyCustomAdapter(Context context, int textViewResourceId,
            String[] objects) {
        super(context, textViewResourceId, objects);
        // TODO Auto-generated constructor stub
    }

    @Override
    public View getDropDownView(int position, View convertView,
            ViewGroup parent) {
        // TODO Auto-generated method stub
        return getCustomView(position, convertView, parent);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        return getCustomView(position, convertView, parent);
    }

    public View getCustomView(int position, View convertView,
            ViewGroup parent) {
        // TODO Auto-generated method stub
        // return super.getView(position, convertView, parent);

        LayoutInflater inflater = getLayoutInflater();
        View row = inflater.inflate(R.layout.row, parent, false);
        TextView label = (TextView) row.findViewById(R.id.weekofday);
        label.setText(DayOfWeek[position]);

        ImageView icon = (ImageView) row.findViewById(R.id.icon);

        if (DayOfWeek[position] == "Sunday") {
            icon.setImageResource(R.drawable.icon);
        } else {
            icon.setImageResource(R.drawable.icongray);
        }

        return row;
    }
}

}

这里是我的代码我能够在微调器中显示值但我想要显示仅在Textview上选择项目而不是在值中，而它的值显示也告诉我如何删除它请看屏幕并告诉我如何删除< / p>

Answer 1

一个简单的解决方案是：
a）将数组修改为

String[] DayOfWeek = { "1", "2", "3", "4", "5", "6" };

b）调用mySpinner.setPromptId（）并设置一个字符串reosurceId，其值为“Select item”。

仅在未打开或关闭下拉列表时才设置“选择项目”，请点击此链接How to make an Android Spinner with initial text "Select One"？

Answer 2

ListPopupWindow numberList;
TextView spDays;
ArrayList<Map<String, String>>() listTrans;

in oncreate spDays.setonclicklistner(this);spDays.setText("Select");
setNumberListSpinnerView();
in onclick(){
  when spDays clicked :- numberList.show();
}


void setNumberListSpinnerView() {

    numberList= new ListPopupWindow(this);
    numberList.setAnchorView(spDays);

    numberList.setOnItemClickListener((new AdapterView.OnItemClickListener() {
        @Override
        getListItem();
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            Map map = listTrans.get(position);
            spDays.setText(map.get("circle_name").toString());
            circle_name = map.get("circle_name") + "";
            circle_id = map.get("circle_id").toString();
            circleList.dismiss();
            Log.d("Circle id:", circle_id + "");
            getRetails();

        }
    }));
}


void getListItem(){
    String[] numbers = {"1","2","3","4","5","6"};
    listTrans = new ArrayList<Map<String, String>>();
    LinkedHashMap<String, String> tran = new LinkedHashMap<String, String>();
    for (String number : numbers) {
        tran.put("numbers", number);
        listTrans.add(tran);
    }
    SimpleAdapter adapter = new SimpleAdapter(AddRetailSurvey.this, listTrans,
            android.R.layout.simple_spinner_dropdown_item,
            new String[]{"numbers"},
            new int[]{android.R.id.text1});
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    numberList.setAdapter(adapter);
}

根据您的要求更改代码，如果您遇到任何问题，请检查并告知我们。这项技术的最佳部分是你可以改变文字颜色。谢谢:)）

如何从android中的Custom Spinner中删除Select Item

2 个答案: