Question

private Spinner mSpnrCustomer;
private List<String> mCustomerList = new ArrayList<String>();
mCustomerList= Arrays.asList(getResources().getStringArray(R.array.customer_names));
mSpnrCustomer.setAdapter(new SpinnerRoomTypeAdapter(context,mCustomerList));

这里使用ArrayList中的相应数据成功填充Spinner。我想添加一个额外的字符串，而不是底部的ArrayList中的字符串，例如“CreateUser”。在选择这个时我需要它来打开一个弹出窗口。我怎么能这样做？

Answer 1

您需要 notify 适配器有关列表中的更改

mCustomerList = new ArrayList<String>();
//populate the list
mCustomerList = 
Arrays.asList(getResources().getStringArray(R.array.customer_names));
//set the adapter
mSpnrCustomer.setAdapter(new SpinnerRoomTypeAdapter(context,mCustomerList));
//add something to the List
mCustomerList.add("Foo");
//notify the adapter
myAdapter.notifyDataSetChanged();

现在您遇到的问题是您将适配器设置为匿名实例...那么您将需要一个变量

Answer 2

简单：

private Spinner mSpnrCustomer;
private List<String> mCustomerList = new ArrayList<String>();
   mCustomerList= Arrays.asList(getResources().getStringArray(R.array.customer_names));
String createUser= "CreateUser";
mCustomerList.add(createUser);
        mSpnrCustomer.setAdapter(new SpinnerRoomTypeAdapter(context,mCustomerList));

说明：您有一个包含String对象的ArrayList。如果你想为它添加新的字符串，你可以使用ArrayList方法添加它。

Answer 3

试试这个

List<String> list = new LinkedList<>(Arrays.asList(getResources().getStringArray(R.array.customer_name)));
list.add("CreateUser");

mSpnrCustomer.setAdapter(new SpinnerRoomTypeAdapter(context,list));

Answer 4

    private Spinner mSpnrCustomer;
private List<String> mCustomerList = new ArrayList<String>();
customer_names.add("Value");
   mCustomerList= Arrays.asList(getResources().getStringArray(R.array.customer_names));
        mSpnrCustomer.setAdapter(new SpinnerRoomTypeAdapter(context,mCustomerList));

在调用微调器之前添加一行代码 customer_names.add（＆＃34; Value＆＃34;）;

如何在Spinner中添加其他字符串

4 个答案: