安卓：我如何preserve在我arrayadapter /列表视图时变化方向的数据？ [英] android: how do i preserve the data in my arrayadapter/listview when change orientation?

问题描述

上面一样，它是自动完成？我的列表是空的，一旦方向chMYanges？与不，我需要的方向变化=）

as above, is it done automatically? My list was empty once the orientation chMYanges? and nope, i need the orientation change =)

我的适配器

public class ResultsAdapter extends ArrayAdapter<SearchItem> implements Filterable{

private ArrayList<SearchItem> subItems;
private ArrayList<SearchItem> allItems;// = new ArrayList<SearchItem>();
private LayoutInflater inflater;
private PTypeFilter filter;
private OnCheckedChangeListener test;

public ResultsAdapter(Context context, int textViewResourceId, ArrayList<SearchItem> items,OnCheckedChangeListener a) {

    super(context, textViewResourceId, items);
        //this.subItems = items;
        for( int i = 0;i < items.size();i++){
            subItems.add(items.get(i));
        }
        this.allItems = this.subItems;
        inflater= LayoutInflater.from(context);

        test = a;
}

我的onCreate

My onCreate

    public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);        



    ListView lvr = (ListView)findViewById(R.id.search_results);



  //  if(savedInstanceState == null){
        this.m_adapter = new ResultsAdapter(home.this, R.layout.listrow, sResultsArr,home.this);
        this.specsAdapter = new FeaturesExpandableAdapter(home.this,new ArrayList<String>(),new ArrayList<ArrayList<Feature>>()); 
   // }
        lvr.setAdapter(this.m_adapter);

谢谢你们

推荐答案

您也可以使用<一个href=\"http://developer.android.com/reference/android/app/Activity.html#onRetainNonConfigurationInstance\">http://developer.android.com/reference/android/app/Activity.html#onRetainNonConfigurationInstance()

像这样的事情在你的活动：

Something like this in your Activity:

@Override
public Object onRetainNonConfigurationInstance() {
    return this.m_adapter.getItems();
}

然后在你的onCreate（）：

And then in your onCreate():

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

    // more init stuff here

    sResultsArr = (ArrayList<SearchItems>)getLastNonConfigurationInstance();
    if(sResultArr == null) {
        sResultsArray = new ArrayList<SearchItems>();  // or some other initialization
    }

    self.m_adapter = new ResultsAdapter(home.this, R.layout.listrow, sResultsArr,home.this);

    // ...
}

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