【发布时间】：2018-01-19 07:00:10
【问题描述】：
我使用RecyclerView 并在其上实现了搜索过滤器，我在这里遇到了问题
当我按项目搜索后，我得到错误的位置不是我搜索的，请帮助我解决这个问题
例如，在搜索“android”位置后，第 2 项名称为“Android” .. 为什么会出现这个问题？ ..谢谢你
MyAdapter.java
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
public List<RecyclerItem> listItems;
private Context mContext;
public MyAdapter(List<RecyclerItem> listItems, Context mContext) {
this.listItems = listItems;
this.mContext = mContext;
}
@Override
public ViewHolder onCreateViewHolder(final ViewGroup parent, int viewType) {
final View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.recycler_item, parent, false);
final ViewHolder holder = new ViewHolder(view);
view.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final int position = holder.getAdapterPosition();
if (position == 0) {
Toast.makeText(mContext,"iOS",Toast.LENGTH_SHORT).show();
}
if (position == 1) {
Toast.makeText(mContext,"Android",Toast.LENGTH_SHORT).show();
}
}
});
return holder;
}
@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
final RecyclerItem itemList = listItems.get(position);
holder.txtTitle.setText(itemList.getTitle());
holder.txtDescription.setText(itemList.getDescription());
holder.txtOptionDigit.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Display option menu
PopupMenu popupMenu = new PopupMenu(mContext, holder.txtOptionDigit);
popupMenu.inflate(R.menu.option_menu);
popupMenu.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
switch (item.getItemId()) {
case R.id.mnu_item_save:
Toast.makeText(mContext, "Saved " + listItems.get(position).getTitle(), Toast.LENGTH_SHORT).show();
break;
case R.id.mnu_item_delete:
//Delete item
Toast.makeText(mContext, "Deleted " + listItems.get(position).getTitle(), Toast.LENGTH_SHORT).show();
listItems.remove(position);
notifyDataSetChanged();
break;
default:
break;
}
return false;
}
});
popupMenu.show();
}
});
}
@Override
public int getItemCount() {
return listItems.size();
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private Button buttoncalling;
public TextView txtTitle;
public TextView txtDescription;
public TextView txtOptionDigit;
public ViewHolder(View itemView) {
super(itemView);
txtTitle = (TextView) itemView.findViewById(R.id.txtTitle);
txtDescription = (TextView) itemView.findViewById(R.id.txtDescription);
txtOptionDigit = (TextView) itemView.findViewById(R.id.txtOptionDigit);
buttoncalling = (Button) itemView.findViewById(R.id.bbbbbbbbbb);
buttoncalling.setOnClickListener(this);
}
@Override
public void onClick(View view) {
}
}
}
过滤器
TextWatcher mTextWatcher = new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (s.toString().equals("")){
initAdapter();
} else {
searchItem(s.toString());
}
}
@Override
public void afterTextChanged(Editable s) {
}
};
private void initAdapter(){
adapter.listItems.clear();
for (int i = 0; i < 10; i++) {
listItems.add(new RecyclerItem("Item " + (i + 1), "Welcome to Torisan channel, this is description of item " + (i+1)));
}
adapter.notifyDataSetChanged();
}
private void searchItem(String itemname){
int resultCount = 0;
adapter.listItems.clear();
for (int i = 0; i < tempListItems.size(); i++){
if (tempListItems.get(i).getTitle().contains(itemname)){
listItems.add(new RecyclerItem("Item " + (i + 1), "Welcome to Torisan channel, this is description of item " + (i+1)));
resultCount ++;
}
}
if (resultCount == 0){
showToast();
}
adapter.notifyDataSetChanged();
}
public void showToast() {
// Set the toast and duration
int toastDurationInMilliSeconds = 1000;
mToastToShow = Toast.makeText(this, "No results found.", Toast.LENGTH_LONG);
// Set the countdown to display the toast
CountDownTimer toastCountDown;
toastCountDown = new CountDownTimer(toastDurationInMilliSeconds, 1000 /*Tick duration*/) {
public void onTick(long millisUntilFinished) {
mToastToShow.show();
}
public void onFinish() {
mToastToShow.cancel();
}
};
// Show the toast and starts the countdown
mToastToShow.show();
toastCountDown.start();
}
}
【问题讨论】：
-
你的过滤方法在哪里？
-
发生这种情况是因为当您过滤列表时，会创建新列表，其中“Android”项目是第一名。请分享过滤方法。以便我们可以为您提供更多帮助。谢谢
-
它没有给你错误的位置。这是因为每次搜索后，适配器列表都会根据您的过滤器重置。
-
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