我一直在尝试在我的actionBar中实现一个SearchView，它过滤了一个从异步任务中获取数据的Recyclerview，现在我似乎无法让它工作。
我在这里看到的所有答案都获得了Recycler类的适配器与SearchView在同一个类中。但是在我的应用程序中，适配器位于Async类中，而Searchview位于片段中。我创建了一个Async类，因为当我的应用程序试图加载RecyclerView上的项目时，我不希望我的UI线程变慢或崩溃。贝娄是我的代码，任何帮助都很可爱。
最后，对于我的片段，我有一些代码如此生病，只是将大部分代码排除在外，并留下与问题相关的内容。感谢。
表示MyAsync.java
public class MyAsync extends AsyncTask<Void,RafTask,Void>{
private RecyclerView recyclerView;
private ProgressBar progressBar;
private Context context;
private static ClientRecycler recycler;
private SearchView searchView;
private ArrayList<RafTask> newLists = new ArrayList<>();
String am;
private static ArrayList<RafTask> raftask = new ArrayList<>();
private static final String TAG = "ListDataActivity";
public MyAsync(RecyclerView recyclerView, ProgressBar progressBar,Context context, ArrayList<RafTask> newList){
this.recyclerView = recyclerView;
this.progressBar = progressBar;
this.context = context;
this.newLists = newList;
}
@Override
protected void onPreExecute() {
recycler = new ClientRecycler(raftask);
recyclerView.setAdapter(recycler);
progressBar.setVisibility(View.VISIBLE);
}
@Override
protected Void doInBackground(Void... voids) {
MyHelper mHelper = new MyHelper(context,null,null,1);
SQLiteDatabase database = mDatabaseHelper.getReadableDatabase();
String Name;
int count = 0;
Cursor c = mHelper.getRafData();
while(c.moveToNext()){
//Database codes
publishProgress(new RafTask(Name,"","",String.valueOf(count),"",""));
return null;
}
@Override
protected void onProgressUpdate(RafTask... value) {
raftask.add(value[0]);
recycler.notifyDataSetChanged();
}
@Override
protected void onPostExecute(Void aVoid) {
progressBar.setVisibility(View.GONE);
Log.d(TAG, "fragment text pass: " + am);
}
public static void setFilter(ArrayList<RafTask> newList){
// newList = newLists;
raftask = new ArrayList<>();
raftask.addAll(newList);
recycler.notifyDataSetChanged();
}
}
对于Rafadapter.java
public class RafRecycler extends RecyclerView.Adapter<RafRecycler.MyViewHolder> {
private static ArrayList<RafTask> rafTasks = new ArrayList<>();
public RafRecycler(ArrayList<RafTask> rafTasks){
this.rafasks = rafTasks;
}
@Override
public RafRecycler.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.raw_rafs,parent,false);
return new RafRecycler.MyViewHolder(view);
}
@Override
public void onBindViewHolder(ClientRecycler.MyViewHolder holder, int position) {
holder.name.setText(rafTasks.get(position).get_raftaskname());
holder.id.setText(String.valueOf(rafTasks.get(position).get_raftaskid())+".");
// holder.id.setText(String.valueOf("->"));
holder.m = rafTasks.get(position).get_raftaskid();
}
@Override
public int getItemCount() {
return clientTasks.size();
}
public static class MyViewHolder extends RecyclerView.ViewHolder{
TextView id,name;
String m;
public MyViewHolder(View itemView) {
super(itemView);
id = itemView.findViewById(R.id.txt_id);
name = itemView.findViewById(R.id.txt_name);
m=itemView.toString();
final MyDatabaseHelper mDatabaseHelper = new MyDatabaseHelper(itemView.getContext(),null,null,1);
final boolean clicked = false;
name.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String names = name.getText().toString();
Cursor c = mHelper.getClientItemID(names);
int itemID = -1;
String email = "";
String address = "";
String shipaddress = "";
String number = "";
while (c.moveToNext()){
//Chech here for the codes to edit all plus numbers
//
//
itemID = c.getInt(0);
address =c.getString(4);
number =c.getString(2);
shipaddress =c.getString(5);
email =c.getString(3);
}
if(itemID >-1){
Log.d(TAG, "onItemClick: The id is: " + itemID);
Log.d(TAG, "onItemClick: The desc is: " + address);
Log.d(TAG, "onItemClick: The price is: " + shipaddress);
Intent editScreenIntent = new Intent(v.getContext(), EditClientActivity.class);
editScreenIntent.putExtra("id", itemID);
editScreenIntent.putExtra("name", names);
editScreenIntent.putExtra("number", number);
editScreenIntent.putExtra("address", address);
editScreenIntent.putExtra("email", email);
editScreenIntent.putExtra("shipaddress", shipaddress);
v.getContext().startActivity(editScreenIntent);
((MainActivity) v.getContext()).overridePendingTransition(R.anim.slide_from_right, R.anim.slide_to_left);
}else{
Toast.makeText(v.getContext(),"No idd clicked", Toast.LENGTH_SHORT).show();
}
}
});
}
}
public void setFilter(ArrayList<ClientTask> newList){
clientTasks = new ArrayList<>();
clientTasks.addAll(newList);
notifyDataSetChanged();
}
}
最后我的fragment.java
public class ClientFragment extends Fragment implements SearchView.OnQueryTextListener {
private static final String TAG = "ListDataActivity";
MyDatabaseHelper mDatabaseHelper;
private ProgressBar progressBar;
private RecyclerView recyclerView;
public static SearchView searchView;
static String am;
private MenuItem menua;
public static ArrayList<ClientTask> newList;
RecyclerView.LayoutManager layoutManager;
public BackgroundAsync backgroundAsync;
private ArrayList<ClientTask> clienttask = new ArrayList<>();
ClientRecycler recycler;
private ListView mListView;
Button opencon;
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
private OnFragmentInteractionListener mListener;
public ClientFragment() {
// Required empty public constructor
}
public static ClientFragment newInstance(String param1, String param2) {
ClientFragment fragment = new ClientFragment();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
@Override
public void onPrepareOptionsMenu(Menu menu){
am="asdf";
MenuItem menuItem = menu.findItem(R.id.mysearchbtn);
SearchView searchView = (SearchView) menuItem.getActionView();
searchView.setOnQueryTextListener(this);
Log.d(TAG, "onCreateFragment ");
super.onPrepareOptionsMenu(menu);
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
if (getArguments() != null) {
setRetainInstance(true);
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_client, container, false);
progressBar = view.findViewById(R.id.progressbar);
recyclerView = view.findViewById(R.id.recyclerView);
layoutManager = new LinearLayoutManager(getActivity());
recyclerView.setLayoutManager(layoutManager);
recyclerView.setHasFixedSize(true);
recycler = new ClientRecycler(clienttask);
opencon = view.findViewById(R.id.opencon);
opencon.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(getActivity(), AddClient.class);
startActivity(intent);
}
});
return view;
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
if (context instanceof OnFragmentInteractionListener) {
mListener = (OnFragmentInteractionListener) context;
} else {
// Toast.makeText(context, " Off", Toast.LENGTH_SHORT).show();
}
}
@Override
public void onDetach() {
super.onDetach();
mListener = null;
}
@Override
public boolean onQueryTextSubmit(String query) {
return false;
}
@Override
public boolean onQueryTextChange(String newText) {
newText = newText.toLowerCase();
newList = new ArrayList<>();
for (ClientTask clientTask : clienttask) {
String name = clientTask.get_clienttaskname().toLowerCase();
if (name.contains(newText)) {
Log.d(TAG, "u get any: "+ name);
newList.add(clientTask);
}else{
Log.d(TAG, "we aint got shit: "+ name);
}
}
Log.d(TAG, "the usual fail ");
recyclerView.setAdapter(recycler);
return true;
}
void filter(String text){
ArrayList<ClientTask> newList = new ArrayList();
for (ClientTask c : clienttask) {
// String name = clientTask.get_clienttaskname().toLowerCase();
if (c.get_clienttaskname().contains(text)) {
newList.add(c);
}
Log.d(TAG, "the usual fail ");
BackgroundAsync.setFilter(newList);
recyclerView.setAdapter(recycler);
}
}
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
void onFragmentInteraction(Uri uri);
}
@Override
public void onResume() {
super.onResume();
new BackgroundAsync(recyclerView,progressBar,getActivity(),newList).execute();
}
}
我的代码的某些部分可能非常不足以解决我的问题，但我已经尝试了很多修复工作并没有工作，因此，我有一些看似奇怪的实现。请继续解决问题再次感谢你的帮助。
答案 0 :(得分：0)
我设法通过将Async任务类移动到Fragment类来解决问题，因此它们共享相同的变量。我清除了构造函数中的所有输入，因此它变为新的BackgroundBsync().execute();。这解决了它，我现在能够使用我在Rafadapter类中制作的单独方法搜索所有数据。代码如下。
public void setFilter(ArrayList<ClientTask> newList){
clientTasks = new ArrayList<>();
clientTasks.addAll(newList);
notifyDataSetChanged();
}
所以我需要在onQueryTextChange添加所有内容来添加几行代码
newText = newText.toLowerCase();
ArrayList<ClientTask> newList = new ArrayList();
for (ClientTask c : clienttask) {
String name = c.get_clienttaskname().toLowerCase();
if (name.contains(newText)) {
newList.add(c);
}
Log.d(TAG, "the usual fail ");
}
recycler.setFilter(newList);
return true;
它解决了我的问题。请注意，RafAdapter与ClientRecycler相同。