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안녕하세요 저는 listview 항목에 다음 코드를 구현하려고했습니다. https://www.androidhive.info/2012/09/android-adding-search-functionality-to-listview/,하지만 getfilter 해결할 수 없습니다. 대부분 myappadaptor에는 getfilter 메소드가 없습니다.android myappadaptor filter for listview
나는 이것에 대해 올바른 방법을 택할 것인가 아니면 다른 접근 방식을 택해야 할 것인가.
덕분에 여기
inputSearch.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
// When user changed the Text
ScaleSelect.this.myAppAdapter.getFilter().filter(cs);
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
}
@Override
public void afterTextChanged(Editable arg0) {
}
});
> package com.dmh.trent.scale_checker;
>
> import android.annotation.SuppressLint; import
> android.app.ProgressDialog; import android.content.Context; import
> android.content.Intent; import android.os.AsyncTask; import
> android.support.v7.app.AppCompatActivity; import android.os.Bundle;
> import android.view.LayoutInflater; import android.view.View; import
> android.view.ViewGroup; import android.widget.BaseAdapter; import
> android.widget.EditText; import android.widget.ListView; import
> android.widget.TextView; import android.widget.Toast; import
> java.io.PrintWriter; import java.io.StringWriter; import
> java.io.Writer; import java.sql.Connection; import
> java.sql.DriverManager; import java.sql.ResultSet; import
> java.sql.Statement; import java.util.ArrayList; import java.util.List;
> import android.text.Editable; import android.text.TextWatcher;
>
>
> public class ScaleSelect extends AppCompatActivity {
>
> private ArrayList<ClassListItems> itemArrayList; //List items Array
> private MyAppAdapter myAppAdapter; //Array Adapter
> private ListView listView; // ListView
> private boolean success = false; // boolean
>
> @Override
> protected void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> setContentView(R.layout.scale_select);
> listView = findViewById(R.id.listView); //ListView Declaration
> itemArrayList = new ArrayList<>(); // Arraylist Initialization
> EditText inputSearch = findViewById(R.id.sitefiltertext);
>
> // Calling Async Task
> SyncData orderData = new SyncData();
> orderData.execute("");
>
>
> inputSearch.addTextChangedListener(new TextWatcher() {
>
> @Override
> public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
> // When user changed the Text
> ScaleSelect.this.myAppAdapter.getFilter().filter(cs);
> }
>
> @Override
> public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
> int arg3) {
>
>
> }
>
> @Override
> public void afterTextChanged(Editable arg0) {
>
> }
> });
>
> }
>
> // Async Task has three overrided methods,
> @SuppressLint("StaticFieldLeak")
> private class SyncData extends AsyncTask<String, String, String> {
> String msg = "Internet/DB_Credentials/Windows_FireWall_TurnOn Error, See Android Monitor in the bottom For details!";
> ProgressDialog progress;
>
> @Override
> protected void onPreExecute() //Starts the progress dailog
> {
> progress = ProgressDialog.show(ScaleSelect.this, "Synchronising",
> "ListView Loading! Please Wait...", true);
> }
>
> @Override
> protected String doInBackground(String... strings) // Connect to the database, write query and add items to array list
> {
> try {
> Class.forName("com.mysql.jdbc.Driver");
> Connection conn = DriverManager.getConnection(Appconfig.connectionString,
> Appconfig.db_user, Appconfig.db_pass); //Connection Object
> if (conn == null) {
> success = false;
> } else {
> // Change below query according to your own database.
> String query = "SELECT companyname, companystreetname FROM site";
> Statement stmt = conn.createStatement();
> ResultSet rs = stmt.executeQuery(query);
> if (rs != null) // if resultset not null, I add items to itemArraylist using class created
> {
> while (rs.next()) {
> try {
> itemArrayList.add(new ClassListItems(rs.getString("companyname")));
> } catch (Exception ex) {
> ex.printStackTrace();
> }
> }
> msg = "Found";
> success = true;
> } else {
> msg = "No Data found!";
> success = false;
> }
> }
> } catch (Exception e) {
> e.printStackTrace();
> Writer writer = new StringWriter();
> e.printStackTrace(new PrintWriter(writer));
> msg = writer.toString();
> success = false;
> }
> return msg;
> }
>
> @Override
> protected void onPostExecute(String msg) // disimissing progress dialoge, showing error and setting up my ListView
> {
> progress.dismiss();
> Toast.makeText(ScaleSelect.this, msg + "", Toast.LENGTH_LONG).show();
> if (!success) {
> } else {
> try {
> myAppAdapter = new MyAppAdapter(itemArrayList, ScaleSelect.this);
> listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
> listView.setAdapter(myAppAdapter);
> } catch (Exception ignored) {
>
> }
>
> }
> }
> }
>
> public class MyAppAdapter extends BaseAdapter //has a class viewholder which holds
> {
> class ViewHolder {
> TextView textName;
> }
>
> List<ClassListItems> parkingList;
>
> Context context;
> ArrayList<ClassListItems> arraylist;
>
> private MyAppAdapter(List<ClassListItems> apps, Context context) {
> this.parkingList = apps;
> this.context = context;
> arraylist = new ArrayList<>();
> arraylist.addAll(parkingList);
> }
>
> @Override
> public int getCount() {
> return parkingList.size();
> }
>
> @Override
> public Object getItem(int position) {
> return position;
> }
>
> @Override
> public long getItemId(int position) {
> return position;
> }
>
> @SuppressLint("SetTextI18n")
> @Override
> public View getView(final int position, View convertView, ViewGroup parent) // inflating the layout and initializing widgets
> {
>
> View rowView = convertView;
> ViewHolder viewHolder = null;
> if (rowView == null) {
> LayoutInflater inflater = getLayoutInflater();
> rowView = inflater.inflate(R.layout.list_content, parent, false);
> viewHolder = new ViewHolder();
> viewHolder.textName = rowView.findViewById(R.id.textName);
> rowView.setTag(viewHolder);
> } else {
> viewHolder = (ViewHolder) convertView.getTag();
> }
> // here setting up names and images
> viewHolder.textName.setText(parkingList.get(position).getName() + "");
>
> return rowView;
> }
> }
내 XML입니다
> <?xml version="1.0" encoding="utf-8"?>
> <android.support.constraint.ConstraintLayout
> xmlns:android="http://schemas.android.com/apk/res/android"
> xmlns:app="http://schemas.android.com/apk/res-auto"
> xmlns:tools="http://schemas.android.com/tools"
> android:layout_width="match_parent"
> android:layout_height="match_parent"
> tools:context="com.dmh.trent.scale_checker.ScaleSelect">
>
> <Button
> android:id="@+id/mainmenubuttun"
> android:layout_width="200dp"
> android:layout_height="wrap_content"
> android:layout_marginBottom="40dp"
> android:layout_marginEnd="200dp"
> android:onClick="mainmenubutton"
> android:text="@string/mainmenu"
> app:layout_constraintBottom_toBottomOf="parent"
> app:layout_constraintRight_toRightOf="parent" />
>
> <ListView
> android:id="@+id/listView"
> android:layout_width="290dp"
> android:layout_height="241dp"
> android:layout_marginStart="44dp"
> android:layout_marginTop="40dp"
> android:scrollbars="vertical"
> app:layout_constraintStart_toStartOf="parent"
> app:layout_constraintTop_toBottomOf="@+id/sitefiltertext" />
>
> <EditText
> android:id="@+id/sitefiltertext"
> android:layout_width="289dp"
> android:layout_height="wrap_content"
> android:layout_marginStart="44dp"
> android:layout_marginTop="40dp"
> android:ems="10"
> android:hint="@string/Search"
> android:inputType="textPersonName"
> app:layout_constraintStart_toStartOf="parent"
> app:layout_constraintTop_toTopOf="parent" /> </android.support.constraint.ConstraintLayout>