打開搜索建議到快速搜索框

Question

當我打開搜索欄時，搜索建議框並未打開。只要搜索字段爲空，它就會保持關閉狀態。當我開始輸入時，只有這樣，纔會打開搜索建議框。 當我公開搜索字段時，如何不正當地打開搜索建議框？

YouTube的例子：

Answer 1

searchView.setSuggestionsAdapter() is the answer 

例如用於名單< String>的項目：

searchView.setSuggestionsAdapter(new SearchableCursorAdapter(this, getCursorByQuery(items, ""), items)); 

/** 
* CursorAdapter with the search able list 
* compiler bug in javac 1.5.0_07-164, we need to implement Filter able to make compilation work 
*/ 
public class SearchableCursorAdapter extends CursorAdapter implements Filterable { 
    List<String> mItems; 

    public SearchableCursorAdapter(Context context, Cursor cursor, List<String> items) { 
     super(context, cursor); 
     mItems = items; 
    } 

    @Override 
    public View newView(Context context, Cursor cursor, ViewGroup parent) { 
     LayoutInflater inflater = LayoutInflater.from(context); 
     View view = inflater.inflate(R.layout.searchable_item, parent, false);     
     TextView textView = (TextView) view.findViewById(R.id.searchable_optianl_text_view);   
     textView.setText(cursor.getString(COLUMN_DISPLAY_NAME)); 
     return view; 
    } 

    @Override 
    public void bindView(View view, Context context, Cursor cursor) { 
     TextView textView = (TextView) view.findViewById(R.id.searchable_optianl_text_view); 
     textView.setText(cursor.getString(COLUMN_DISPLAY_NAME)); 
    } 

    @Override 
    public String convertToString(Cursor cursor) { 
     return cursor.getString(COLUMN_DISPLAY_NAME); 
    } 

    @Override 
    public Cursor runQueryOnBackgroundThread(CharSequence constraint) { 
     FilterQueryProvider filter = getFilterQueryProvider(); 
     if (filter != null) { 
      return filter.runQuery(constraint); 
     } 

     return getCursorByQuery(mItems, (String)constraint); 
    } 

    private static final int COLUMN_DISPLAY_NAME = 1; 
} 
/** 
* create a cursor with the list to display 
*/ 
Cursor getCursorByQuery(List<String> fullItems, String constraint) { 
    List<String> items = new ArrayList<String>(); 
    for (String item : fullItems) { 
     if (item.toLowerCase(Locale.US).startsWith(((String) constraint).toLowerCase(Locale.US))) { 
      items.add(item); 
     } 
    } 
    // Load data from list to cursor 
    String[] columns = new String[] { "_id", "text" }; 
    Object[] temp = new Object[] { 0, "default" }; 

    MatrixCursor cursor = new MatrixCursor(columns); 

    for(int i = 0; i < items.size(); i++) { 
     temp[0] = i; 
     temp[1] = items.get(i); 

     cursor.addRow(temp); 
    } 
    return cursor; 
} 

在AndroidMenifest不要忘記：

<!-- enable the search dialog to send searches to SearchableActivity --> 
<meta-data android:name="android.app.searchable" android:resource="@xml/searchable"/>   
<intent-filter> 
    <action android:name="android.intent.action.SEARCH" /> 
</intent-filter> 

searchable.xml

<?xml version="1.0" encoding="utf-8"?> 
<searchable xmlns:android="http://schemas.android.com/apk/res/android" 
    android:label="@string/search_hint" 
    android:hint="@string/search_label"> 
</searchable> 

menu.xml文件

<?xml version="1.0" encoding="utf-8"?> 
<menu xmlns:android="http://schemas.android.com/apk/res/android"> 

<item android:id="@+id/menu_search" 
    android:title="@string/Search" 
    android:icon="@drawable/ic_action_search" 
    android:showAsAction="always" 
    android:actionViewClass="android.widget.SearchView" /> 

</menu> 

您要打開前開始打字