Android 在listview中实现搜索
我想在我的播放列表中进行搜索。我在自定义阵列适配器中实现了getFilter,但它修改了列表,因此,如果我搜索一首歌,它的位置是9,而在我的筛选器中它是唯一的结果,当我单击它时,将播放的歌曲是索引0,而不是9 我的代码:Android 在listview中实现搜索,android,listview,Android,Listview,我想在我的播放列表中进行搜索。我在自定义阵列适配器中实现了getFilter,但它修改了列表,因此,如果我搜索一首歌,它的位置是9,而在我的筛选器中它是唯一的结果,当我单击它时,将播放的歌曲是索引0,而不是9 我的代码: list.setAdapter(adapter); inputSearch.addTextChangedListener(new TextWatcher() { @Override public void onTextChanged(
list.setAdapter(adapter);
inputSearch.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence cs, int start, int before, int count) {
// When user changed the Text
adapter.getFilter().filter(cs);
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable arg0) {
// TODO Auto-generated method stub
}
});
侦听单个列表项单击
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
// getting listitem index
int songIndex = position;
// Starting new intent
Intent in = new Intent(getApplicationContext(),
MusicPlayerActivity.class);
// Sending songIndex to PlayerActivity
in.putExtra("songIndex", songIndex);
setResult(SELECT_SONG, in);
// Closing PlayListView
finish();
}
});
lv.setOnItemClickListener(新的OnItemClickListener(){
@凌驾
public void onItemClick(AdapterView父级、视图、,
内部位置,长id){
//获取列表项索引
指数=位置;
//开始新的意图
Intent in=新的Intent(getApplicationContext(),
音乐课(实用性、课堂);
//正在向PlayerActivity发送歌曲索引
in.putExtra(“歌曲索引”,songIndex);
setResult(选择歌曲,在中);
//关闭播放视图
完成();
}
});
播放列表适配器中的我的代码:
@Override
public Filter getFilter()
{
if (filter == null){
filter = new SongFilter();
}
return filter;
}
private class SongFilter extends Filter
{
@Override
protected FilterResults performFiltering(CharSequence constraint) {
FilterResults results = new FilterResults();
/* results.values = origonalList;
results.count = origonalList.size();*/
// We implement here the filter logic
if (constraint == null || constraint.length() == 0) {
synchronized (this)
{
// No filter implemented we return all the list
results.values = MainAppConfig.playerService.getPlaylist();
results.count = MainAppConfig.playerService.getPlaylist().size();
}
}
else {
// We perform filtering operation
ArrayList<Song> filter = new ArrayList<>();
ArrayList<Song> items = new ArrayList<>();
synchronized (this)
{
items.addAll(songList);
}
for (Song song : items ) {
if (song.getFileName().toUpperCase().startsWith(constraint.toString().toUpperCase()))
filter.add(song);
}
results.values = filter;
results.count = filter.size();
}
return results;
}
@Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
filteredList = (ArrayList)results.values;
notifyDataSetChanged();
clear();
Log.d("Filter", "Starting to publish the results with " + songList.size() + " items");
for (int i = 0; i < filteredList.size(); i++){
add(filteredList.get(i));
}
Log.d("Filter", "Finished publishing results");
notifyDataSetInvalidated();
}
}
@覆盖
公共过滤器getFilter()
{
if(filter==null){
filter=新歌曲过滤器();
}
回流过滤器;
}
私有类SongFilter扩展了过滤器
{
@凌驾
受保护的筛选器结果性能筛选(CharSequence约束){
FilterResults results=新的FilterResults();
/*结果.值=原点;
results.count=origonalist.size()*/
//我们在这里实现过滤逻辑
if(constraint==null | | constraint.length()==0){
已同步(此)
{
//没有实现过滤器,我们返回所有列表
results.values=MainAppConfig.playerService.getPlaylist();
results.count=MainAppConfig.playerService.getPlaylist().size();
}
}
否则{
//我们执行过滤操作
ArrayList过滤器=新的ArrayList();
ArrayList items=新建ArrayList();
已同步(此)
{
items.addAll(歌曲列表);
}
用于(歌曲:项目){
if(song.getFileName().toUpperCase().startsWith(constraint.toString().toUpperCase()))
添加(歌曲);
}
结果.值=过滤器;
results.count=filter.size();
}
返回结果;
}
@凌驾
受保护的无效发布结果(CharSequence约束,
FilterResults(结果){
filteredList=(ArrayList)results.values;
notifyDataSetChanged();
清除();
Log.d(“Filter”,“开始使用“+songList.size()+”items”发布结果”);
对于(int i=0;i
此时,列表视图不知道项目在适配器中的原始位置,但您可以通过以下方式找到它:
Song song = parent.getItemAtPosition(position);
MainAppConfig.playerService.getPlaylist().indexOf(song);