将 ArrayAdapter 转换为 CursorAdapter 以在 SearchView 中使用 [英] Converting an ArrayAdapter to CursorAdapter for use in a SearchView

问题描述

如何将静态数据的 ArrayAdapter 转换为 CursorAdapter 以在 SearchView 中使用建议侦听器?我已经从静态数据 (allString)

How can I convert an ArrayAdapter<String> of static data into a CursorAdapter for using Suggestion Listener in SearchView? I have constructed the ArrayAdapter<String> from static data (allString)

ArrayAdapter<String> searchAdapter = new ArrayAdapter<String>(context, R.layout.listitem, allString);

我将它用于 MultiAutoCompleteTextView，它在 API 级别低于 11 的设备上运行良好

and I use it for an MultiAutoCompleteTextView which works fine in devices with API level less than 11

MultiAutoCompleteTextView findTextView.setAdapter(searchAdapter);

然而，我的目标 API 是 11 级，对于 API>10，我使用了一个 ActionBar，我想在其中使用一个 SearchView.

However my target API is level is 11 and for API>10 I use an ActionBar within which I would like to have a SearchView instead.

这是我尝试过的:它确实显示了带有嵌入式 SearchView 的 ActionBar，但没有像 MultiAutoCompleteTextView 那样给出任何建议>.

Here's what I have tried: It does show the ActionBar with the embedded SearchView but does not give any suggestions as it would in the MultiAutoCompleteTextView.

@Override
public boolean onCreateOptionsMenu(Menu menu) {     
        MenuInflater inflater = getMenuInflater();

         if (android.os.Build.VERSION.SDK_INT > 10){
             inflater.inflate(R.menu.menu11, menu);
             searchView = (SearchView) menu.findItem(R.id.MENU_SEARCH).getActionView();
             int[] to = {0};
             CursorAdapter cursorAdapter = new SimpleCursorAdapter(context, R.layout.listitem, null, allBusStopString, to);
             searchView.setSuggestionsAdapter(cursorAdapter);
             searchView.setOnSuggestionListener(new OnSuggestionListener() {

                @Override
                public boolean onSuggestionClick(int position) {
                    String selectedItem = (String)cursorAdapter.getItem(position);
                    Log.v("search view", selectedItem);
                    return false;
                }

                @Override
                public boolean onSuggestionSelect(int position) {
                    return false;
                }
             });  
         }else{
             inflater.inflate(R.menu.menu, menu);
         }

    return true;
}

推荐答案

这很奇怪 SearchView.setSuggestionsAdapter 只接受 CursorAdapter.

That's strange SearchView.setSuggestionsAdapter accepts CursorAdapter only.

您可以创建 MatrixCursor 并用字符串中的数据填充它大批.我希望你收集的数据很少.

You could create MatrixCursor and fill it with data from String array. I hope you have small data collection.

然后将光标传递给 CursorAdapter.

Then pass the cursor to CursorAdapter.

String[] columnNames = {"_id","text"}
MatrixCursor cursor = new MatrixCursor(columnNames);
String[] array = getResources().getStringArray(R.array.allStrings); //if strings are in resources
String[] temp = new String[2];
int id = 0;
for(String item : array){
    temp[0] = Integer.toString(id++);
        temp[1] = item;
    cursor.addRow(temp);
}               
String[] from = {"text"}; 
int[] to = {R.id.name_entry};
busStopCursorAdapter = new SimpleCursorAdapter(context, R.layout.listentry, cursor, from, to);

这篇关于将 ArrayAdapter 转换为 CursorAdapter 以在 SearchView 中使用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！