Android Code

Custom ListView AlertDialog With Filter and Search

I hope this tutorial might be helpful to all android developer to search or filter the item of the custom list view.
Here the list view which shows in Alert-dialog. And we can search the item of the list view.

Here I am creating the ListView and Editext programatically and search the item of the list view.
So lets start the coding to search the item of the listview in alert dialog.

Main_activity.xml

<relativelayout android:layout_height="match_parent" android:layout_width="match_parent" android:paddingbottom="@dimen/activity_vertical_margin" android:paddingleft="@dimen/activity_horizontal_margin" android:paddingright="@dimen/activity_horizontal_margin" android:paddingtop="@dimen/activity_vertical_margin" tools:context=".MainActivity" xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools">

    <textview android:id="@+id/textView1" android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="@string/hello_world">

    <button android:id="@+id/button_listviewdialog" android:layout_below="@+id/textView1" android:layout_centerhorizontal="true" android:layout_height="wrap_content" android:layout_margintop="147dp" android:layout_width="wrap_content" android:text="ListviewDilaog">

    <edittext android:ems="10" android:id="@+id/editText_item" android:layout_below="@+id/textView1" android:layout_centerhorizontal="true" android:layout_height="wrap_content" android:layout_margintop="49dp" android:layout_width="wrap_content">

        <requestfocus>

    </requestfocus></edittext>

</button></textview></relativelayout>

alertlistrow.xml

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<linearlayout android:layout_height="match_parent" android:layout_width="match_parent" android:orientation="vertical" android:paddingleft="@dimen/activity_vertical_margin" android:paddingright="@dimen/activity_vertical_margin" xmlns:android="http://schemas.android.com/apk/res/android">

    <textview android:id="@+id/textView_titllename" android:layout_gravity="center" android:layout_height="wrap_content" android:layout_width="wrap_content" android:padding="5dp" android:text="Large Text" android:textappearance="?android:attr/textAppearanceMedium">

    <textview android:id="@+id/textView_alertnumber" android:layout_height="wrap_content" android:layout_width="wrap_content" android:visibility="gone">

</textview></textview></linearlayout>

MainActivity.java

package com.sunil.listviewdialog;

import java.util.ArrayList;

import java.util.Arrays;

import android.app.Activity;

import android.app.AlertDialog;

import android.content.DialogInterface;

import android.os.Bundle;

import android.text.Editable;

import android.text.TextWatcher;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.Button;

import android.widget.EditText;

import android.widget.LinearLayout;

import android.widget.ListView;

public class MainActivity extends Activity implements OnClickListener, OnItemClickListener{

    private Button btn_listviewdialog=null;

    private EditText txt_item=null;

    private String TitleName[]={"Sunil Gupta","Ram Chnadra"," Abhishek Tripathi","Amit Verma","Sandeep Pal","Awadhesh Diwakar","Shishir Verma","Ravi Vimal","Prabhakr Singh","Manish Srivastva","Jitendra Singh","Surendra Pal"};

    private ArrayList<string> array_sort;

    int textlength=0;

    private AlertDialog myalertDialog=null;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        txt_item=(EditText)findViewById(R.id.editText_item);

        btn_listviewdialog=(Button)findViewById(R.id.button_listviewdialog);

        btn_listviewdialog.setOnClickListener(this);

    }

    @Override

    public void onClick(View arg0) {

        AlertDialog.Builder myDialog = new AlertDialog.Builder(MainActivity.this);

        final EditText editText = new EditText(MainActivity.this);

        final ListView listview=new ListView(MainActivity.this);

        editText.setCompoundDrawablesWithIntrinsicBounds(R.drawable.discoverseed_larg1, 0, 0, 0);

        array_sort=new ArrayList<string> (Arrays.asList(TitleName));

        LinearLayout layout = new LinearLayout(MainActivity.this);

        layout.setOrientation(LinearLayout.VERTICAL);

        layout.addView(editText);

        layout.addView(listview);

        myDialog.setView(layout);

        CustomAlertAdapter arrayAdapter=new CustomAlertAdapter(MainActivity.this, array_sort);

        listview.setAdapter(arrayAdapter);

        listview.setOnItemClickListener(this);

        editText.addTextChangedListener(new TextWatcher()

            {

                public void afterTextChanged(Editable s){

                }

                public void beforeTextChanged(CharSequence s,

                        int start, int count, int after){

                }

                public void onTextChanged(CharSequence s, int start, int before, int count)

                {

                    editText.setCompoundDrawablesWithIntrinsicBounds(0, 0, 0, 0);

                    textlength = editText.getText().length();

                    array_sort.clear();

                    for (int i = 0; i < TitleName.length; i++)

                    {

                        if (textlength <= TitleName[i].length())

                        {

                            if(TitleName[i].toLowerCase().contains(editText.getText().toString().toLowerCase().trim()))

                            {

                                array_sort.add(TitleName[i]);

                            }

                          }

                    }

                    listview.setAdapter(new CustomAlertAdapter(MainActivity.this, array_sort));

                    }

                });

        myDialog.setNegativeButton("cancel", new DialogInterface.OnClickListener() {

                        @Override

                        public void onClick(DialogInterface dialog, int which) {

                            dialog.dismiss();

                        }

                    });

        myalertDialog=myDialog.show();

    }

    @Override

    public void onItemClick(AdapterView arg0, View arg1, int position, long arg3) {

            myalertDialog.dismiss();

            String strName=TitleName[position];

            txt_item.setText(strName);

    }

}

</string></string>

CustomAlertAdapter.java

package com.sunil.listviewdialog;

import java.util.ArrayList;

import android.app.Activity;

import android.content.Context;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.TextView;

public class CustomAlertAdapter extends BaseAdapter{

    Context ctx=null;

    ArrayList<string> listarray=null;

    private LayoutInflater mInflater=null;

    public CustomAlertAdapter(Activity activty, ArrayList<string> list)

    {

        this.ctx=activty;

        mInflater = activty.getLayoutInflater();

        this.listarray=list;

    }

    @Override

    public int getCount() {

        return listarray.size();

    }

    @Override

    public Object getItem(int arg0) {

        return null;

    }

    @Override

    public long getItemId(int arg0) {

        return 0;

    }

    @Override

    public View getView(int position, View convertView, ViewGroup arg2) {       

      final ViewHolder holder;

        if (convertView == null ) {

            holder = new ViewHolder();

            convertView = mInflater.inflate(R.layout.alertlistrow, null);

            holder.titlename = (TextView) convertView.findViewById(R.id.textView_titllename);

            convertView.setTag(holder);

        }

        else {

            holder = (ViewHolder) convertView.getTag();

        }

        String datavalue=listarray.get(position);

        holder.titlename.setText(datavalue);

        return convertView;

    }

    private static class ViewHolder {

        TextView titlename;

    }

}

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