我在做一个Android应用程序，它可以从一个Web服务与数据;加载到微调。我需要保持离心器的选择的数据状态，而我去一些画面+回来。举例来说，如果我收到来自Web服务的数据作为 1.apple 2.orange 3.grapes ＆放大器;加载到微调，然后我选择橙色。当我去其他一些画面+回来时，所选择的微调数据应该是橙色。但它再次从服务器到微调加载数据。任何人可以帮助我解决此问题？

我的code：

  @覆盖
公共无效的onCreate（包savedInstanceState）{
    super.onCreate（savedInstanceState）;

    // ...

    如果（Constants.SPINNER！= NULL）{
        spinner.setSelection（Constants.SPINNER）;
    } 其他 {
        WebCall这里获取数据//
    }

    // ...

    spinner.setOnItemSelectedListener（新OnItemSelectedListener（）{
        公共无效onItemSelected（适配器视图＆LT;＆GT;父，
            视图中查看，INT ARG2，长ARG3）{
                Constants.SPINNER = spinner.getSelectedItemPosition（）;
 

在恒类：

 公共静态整数SPINNER =;
 

解决方案

您可以使用

  spinner.getSelectedItemPosition（）;
 

这会回报给你一个int，你可以保存

  prefEdit.putInt（）;
 

然后当你想要重新加载已保存你只需调用一切

  spinner.setSelection（prefs.getInt（钥匙，默认值））;
 

或尝试像这样

保存：

  INT selectedPosition = yourSpinner.getSelectedItemPosition（）
  editor.putInt（spinnerSelection，selectedPosition）;
  editor.commit（）;
 

加载：

  yourSpinner.setSelection（prefs.getInt（spinnerSelection，0））;
 

如果你是阵列使用它应该改变这样的

 字符串selectedString = yourArray [yourSpinner.getSelectedItemPosition（）];
   editor.putString（spinnerSelection，selectedString）;
   editor.commit（）;
 

检查数组[我]反对通过调用存储在prefs.if您使用ArrayList，而不是这部分可以在不循环完成值

  ArrayList.indexOf（prefs.getString（spinnerSelection，）;
 

当你提交证明上述所有数组项了。显示没有人到数组。

I'm doing an Android app which can get data from a web service & load it into spinner. I need to maintain the selected data state of the spinner while I go to some screen & come back. For example, if I'm getting data from the web service as 1.apple 2.orange 3.grapes & loading it into the spinner, then I select orange. When I go to some other screen & come back, the selected spinner data should be orange. But it again loads data from the server into the spinner. Can anybody help me to resolve this?

My code:

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    //...

    if (Constants.SPINNER != null ) {
        spinner.setSelection( Constants.SPINNER);
    } else {
        //WebCall here for getting data
    }

    //...

    spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
        public void onItemSelected(AdapterView<?> parent,
            View view, int arg2, long arg3) {
                Constants.SPINNER = spinner.getSelectedItemPosition();

In Constant class:

public static Integer SPINNER="";

You can use

  spinner.getSelectedItemPosition(); 

that will return to you an int that you can save with

  prefEdit.putInt(); 

then when you want to re-load everything that has been saved you would just call

  spinner.setSelection(prefs.getInt("key", default));

OR TRY LIKE THIS

to Save:

  int selectedPosition = yourSpinner.getSelectedItemPosition()
  editor.putInt("spinnerSelection", selectedPosition);
  editor.commit();

to Load:

yourSpinner.setSelection(prefs.getInt("spinnerSelection",0));

if you are array used it should changed like this

 String selectedString = yourArray[yourSpinner.getSelectedItemPosition()];
   editor.putString("spinnerSelection", selectedString);
   editor.commit();

checking array[i] against the value stored in prefs.if you use an ArrayList instead this part could be done without the loop by calling

 ArrayList.indexOf(prefs.getString("spinnerSelection", "");

when you commit show all above array item gone. show no one into array.