android autocompletetextview custom adapter example

 android autocompletetextview custom adapter example

In this Article Today Learn android autocompletetextview custom adapter. follow the Full Source Code android autocompletetextview custom adapter.

1.Autcompletetex.java:

package com.akash.myapplication.autocomplete;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.AdapterView;

import android.widget.AutoCompleteTextView;

import com.akash.myapplication.R;

import java.util.ArrayList;

import java.util.List;

public class Autcompletetex extends AppCompatActivity {

    AutoCompleteTextView txtSearch;

    List<People> mList;

    PeopleAdapter adapter;

    private People selectedPerson;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_autcompletetex);

        mList = retrievePeople();

        txtSearch = (AutoCompleteTextView) findViewById(R.id.auto_name);

        adapter = new PeopleAdapter(this, R.layout.activity_main, R.id.lbl_name, mList);

        txtSearch.setAdapter(adapter);

        txtSearch.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override

            public void onItemClick(AdapterView<?> adapterView, View view, int pos, long id) {

                //this is the way to find selected object/item

                selectedPerson = (People) adapterView.getItemAtPosition(pos);

            }

        });

    }

    private List<People> retrievePeople() {

        List<People> list = new ArrayList<People>();

        list.add(new People("Akash", "Mali", 1));

        list.add(new People("Vijay", "Chougule", 2));

        list.add(new People("Prakash", "Mali", 3));

        list.add(new People("Nagaraj", "Dhanavade", 4));

        list.add(new People("Ravi", "Patil", 5));

        list.add(new People("Keta", "Phadke", 6));

        list.add(new People("Satish", "Mali", 7));

        return list;

    }

}

2.People.java:

package com.akash.myapplication.autocomplete;

public class People {

    private String name, lastName;

    private int id;

    public People(String name, String lastName, int id) {

        this.name = name;

        this.lastName = lastName;

        this.id = id;

    }

    public int getId() {

        return id;

    }

    public void setId(int id) {

        this.id = id;

    }

    public String getName() {

        return name;

    }

    public void setName(String name) {

        this.name = name;

    }

    public String getlastName() {

        return lastName;

    }

    public void setlastName(String lastName) {

        this.lastName = lastName;

    }

}

3.PeopleAdapter.java:

package com.akash.myapplication.autocomplete;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.ArrayAdapter;

import android.widget.Filter;

import android.widget.TextView;

import com.akash.myapplication.R;

import java.util.ArrayList;

import java.util.List;

public class PeopleAdapter extends ArrayAdapter<People> {

    Context context;

    int resource, textViewResourceId;

    List<People> items, tempItems, suggestions;

    public PeopleAdapter(Context context, int resource, int textViewResourceId, List<People> items) {

        super(context, resource, textViewResourceId, items);

        this.context = context;

        this.resource = resource;

        this.textViewResourceId = textViewResourceId;

        this.items = items;

        tempItems = new ArrayList<People>(items); // this makes the difference.

        suggestions = new ArrayList<People>();

    }

    @Override

    public View getView(int position, View convertView, ViewGroup parent) {

        View view = convertView;

        if (convertView == null) {

            LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            view = inflater.inflate(R.layout.row, parent, false);

        }

        People people = items.get(position);

        if (people != null) {

            TextView lblName = (TextView) view.findViewById(R.id.lbl_name);

            if (lblName != null)

                lblName.setText(people.getName());

        }

        return view;

    }

    @Override

    public Filter getFilter() {

        return nameFilter;

    }

    /**

     * Custom Filter implementation for custom suggestions we provide.

     */

    Filter nameFilter = new Filter() {

        @Override

        public CharSequence convertResultToString(Object resultValue) {

            String str = ((People) resultValue).getName();

            return str;

        }

        @Override

        protected FilterResults performFiltering(CharSequence constraint) {

            if (constraint != null) {

                suggestions.clear();

                for (People people : tempItems) {

                    if (people.getName().toLowerCase().contains(constraint.toString().toLowerCase())) {

                        suggestions.add(people);

                    }

                }

                FilterResults filterResults = new FilterResults();

                filterResults.values = suggestions;

                filterResults.count = suggestions.size();

                return filterResults;

            } else {

                return new FilterResults();

            }

        }

        @Override

        protected void publishResults(CharSequence constraint, FilterResults results) {

            List<People> filterList = (ArrayList<People>) results.values;

            if (results != null && results.count > 0) {

                clear();

                for (People people : filterList) {

                    add(people);

                    notifyDataSetChanged();

                }

            }

        }

    };

}

4.activity_autcompletetex.xml:

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:id="@+id/activity_main"

    android:layout_width="match_parent"

    android:layout_height="match_parent">

    <AutoCompleteTextView

        android:id="@+id/auto_name"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:completionThreshold="2"

        android:hint="@string/hint_enter_name" />

</LinearLayout>

5.row.xml:

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical">

    <TextView

        android:id="@+id/lbl_name"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:paddingBottom="16dp"

        android:paddingLeft="8dp"

        android:paddingRight="8dp"

        android:paddingTop="16dp"

        android:text="Medium Text"

        android:textAppearance="?android:attr/textAppearanceMedium" />

</RelativeLayout>

6.AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.akash.myapplication">

    <application

        android:allowBackup="true"

        android:icon="@mipmap/ic_launcher"

        android:label="@string/app_name"

        android:roundIcon="@mipmap/ic_launcher_round"

        android:supportsRtl="true"

        android:theme="@style/AppTheme">

        <activity android:name=".autocomplete.Autcompletetex">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>

7.Output: