在自定义列表视图中的搜索过滤器后保留原始列表位置使用阵列适配器可过滤
问题描述：
我有一个可过滤的自定义列表视图。它目前获得过滤器。但过滤后，原来的位置会丢失，因此当我设置onClickListener时，它显示错误的结果。有什么方法可以获得原始位置？在自定义列表视图中的搜索过滤器后保留原始列表位置使用阵列适配器可过滤
搜索适配器
public class SearchAdapter extends ArrayAdapter implements Filterable{
private List<word> allModelItemsArray;
private List<word> filteredModelItemsArray;
private Activity context;
private ModelFilter filter;
private LayoutInflater inflator;
MediaPlayer mediaPlayer;
private List<word> list;
public SearchAdapter(Activity context, List<word> list) {
super(context, R.layout.search_row, list);
this.context = context;
this.allModelItemsArray = new ArrayList<word>();
this.list = list;
allModelItemsArray.addAll(list);
this.filteredModelItemsArray = new ArrayList<word>();
filteredModelItemsArray.addAll(allModelItemsArray);
inflator = context.getLayoutInflater();
getFilter();
}
@Override
public Filter getFilter() {
if (filter == null){
filter = new ModelFilter();
}
return filter;
}
static class ViewHolder {
protected TextView text;
protected TextView translatedText;
protected TextView pronounce;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View view = null;
Typeface font = Typeface.createFromAsset(context.getAssets(), "fonts/NotoSans-Regular.ttf");
word m = filteredModelItemsArray.get(position);
ViewHolder viewHolder = null;
if (convertView == null) {
view = inflator.inflate(R.layout.search_row, null);
viewHolder = new ViewHolder();
viewHolder.text = (TextView) view.findViewById(R.id.list_view_search_words);
viewHolder.text.setTypeface(font);
viewHolder.translatedText = (TextView) view.findViewById(R.id.translated_text);
viewHolder.translatedText.setTypeface(font);
viewHolder.pronounce = (TextView) view.findViewById(R.id.pronounce);
viewHolder.pronounce.setTypeface(font);
view.setTag(viewHolder);
} else {
view = convertView;
viewHolder = ((ViewHolder) view.getTag());
}
viewHolder.text.setText(m.getMainText());
viewHolder.translatedText.setText(m.getTranslationText());
viewHolder.pronounce.setText(m.getPronunciation_in_english());
/*get full sound file name*/
Integer fileNameLength = m.getAudio().toString().length();
String fileName = m.getAudio().toString();
final String soundFile = fileName.substring(0,fileNameLength - 4);
final ImageView imgPlay = (ImageView) view.findViewById(R.id.phraselist_play_audio);
imgPlay.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mediaPlayer == null) {
View parentRow = (View) v.getParent();
ListView listView = (ListView) parentRow.getParent();
final int position = listView.getPositionForView(parentRow);
try {
Uri mp3 = Uri.parse("android.resource://" + context.getPackageName() + "/raw/" + soundFile);
mediaPlayer = new MediaPlayer();
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setDataSource(context, mp3);
mediaPlayer.prepare(); // might take long! (for buffering, etc)
mediaPlayer.start();
imgPlay.setImageResource(R.drawable.playactive);
// mediaPlayer.setOnCompletionListener(onCompletionListener);
mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
@Override
public void onCompletion(MediaPlayer mp) {
mediaPlayer.release();
mediaPlayer = null;
imgPlay.setImageResource(R.drawable.playinactive);
}
});
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SecurityException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
});
return view;
}
private class ModelFilter extends Filter
{
@Override
protected FilterResults performFiltering(CharSequence constraint) {
constraint = constraint.toString().toLowerCase();
FilterResults result = new FilterResults();
if(constraint != null && constraint.toString().length() > 0)
{
ArrayList<word> filteredItems = new ArrayList<word>();
for(int i = 0, l = allModelItemsArray.size(); i < l; i++)
{
word m = allModelItemsArray.get(i);
if(m.getMainText().toLowerCase().contains(constraint))
filteredItems.add(m);
}
result.count = filteredItems.size();
result.values = filteredItems;
}
else
{
synchronized(this)
{
result.values = allModelItemsArray;
result.count = allModelItemsArray.size();
}
}
return result;
}
@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
filteredModelItemsArray = (ArrayList<word>)results.values;
notifyDataSetChanged();
clear();
for(int i = 0, l = filteredModelItemsArray.size(); i < l; i++)
add(filteredModelItemsArray.get(i));
notifyDataSetInvalidated();
}
}
}
搜索列表活动（的onResume功能）
protected void onResume(){
super.onResume();
GlobalState state = ((GlobalState) getApplicationContext());
state.doAction();
wordDb = new wordDB(SearchListActivity.this);
paymentDb = new paymentDB(SearchListActivity.this);
//getAllWords();
final ArrayList<word> words = new ArrayList<word>();
Cursor row;
Integer checkPayment = paymentDb.CheckTable();
/*If free not purchased*/
if(checkPayment == 0)
{
row = wordDb.selectWordList("0");
}
else
{
row = wordDb.selectAllWord();
}
row.moveToFirst();
while (!row.isAfterLast()) {
words.add(new word(row.getString(0),row.getString(1),row.getString(2),row.getString(3),row.getString(4),row.getString(5),row.getString(6),row.getString(7),row.getString(8),row.getString(9)));
row.moveToNext();
}
row.close();
final SearchAdapter adapter = new SearchAdapter(SearchListActivity.this, words);
final ListView listView = (ListView) findViewById(R.id.search_list_view_word);
listView.setAdapter(adapter);
final EditText etSearch = (EditText) findViewById(R.id.etSearch);
// Add Text Change Listener to EditText
etSearch.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
// Call back the Adapter with current character to Filter
adapter.getFilter().filter(s.toString());
adapter.notifyDataSetChanged();
listView.setAdapter(adapter);
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count,int after) {
}
@Override
public void afterTextChanged(Editable s) {
if(s.length()==0){
}
}
});
ListView searchListView;
searchListView = (ListView)findViewById(R.id.search_list_view_word);
searchListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Object o = parent.getItemAtPosition(position);
word_obj = (word) o;
if (Integer.valueOf(word_obj.getCategoryId()) >= 0) {
Intent myIntent = new Intent(SearchListActivity.this, WordDetailsActivity.class);
myIntent.putExtra("word_obj", word_obj);
myIntent.putExtra("position", position);
//Log.d("id",String.valueOf(id));
//Log.d("getitem", String.valueOf(adapter.getItemId(position)));
//words.get(words.indexOf(searchAdapter.getItemId(position)));
myIntent.putExtra("currentClickedId", word_obj.getCsvWordId().toString());
myIntent.putExtra("favouriteFlag", 0);
myIntent.putExtra("searchFlag", 1);
myIntent.putExtra("searchString", etSearch.getText().toString());
SearchListActivity.this.startActivity(myIntent);
}
}
});
}
答
里面的列表视图中您的项目，点击，你在获取对象需要的位置，对吧？
比较该对象的路径（考虑它是一首歌曲）或歌曲标题或您的原始数组列表中唯一的东西。
运行for循环并遍历包含所有歌曲的原始歌曲列表的整个大小。当您获得匹配结果时，将for循环的循环控制变量存储到position中，然后在意图中使用该变量。
答
song_list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
SongModel songModel = (SongModel)arrayAdapter.getItem(position);
/* Toast.makeText(getActivity().getApplicationContext(),songModel.getSongTitle(),Toast.LENGTH_SHORT).show();*/
// for循环，甚至识别搜索后，这首歌的正确位置
String path = songModel.path();
for(int i=0;i<songs.size();i++){
if(songs.get(i).path().equals(path)){
pos=i;
}
}
Intent intent
= new Intent(getActivity(), PlayMedia.class);
intent.putExtra("position", pos);
intent.putExtra("songlist", songs);
intent.putExtra("clicked", "yes");
startActivity(intent);
}
});
return view;
}
在这里我就点击收听我写的代码，用于识别被点击歌曲的正确道路。
请用一些代码来说明这一点。 –