ListView Example in Android With ArrayList

Simple List View Example in Android

In this program I will insert the data into the array list and delete the contains from the array list. Here I am inserting the data temporarily. This data will not store in the database. Let’s see the program coding:

In main.xml I taken two buttons, one is for insert and another is for delete and taken list view.

main.xml  will look like this:

main.xml

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

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

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >

    <TextView

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:gravity="center"

        android:text="Enter Text" />

    <EditText

        android:id="@+id/et_main"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:inputType="textPersonName" >

        <requestFocus />

    </EditText>

    <RelativeLayout

        android:id="@+id/relativeLayout1"

        android:layout_width="match_parent"

        android:layout_height="wrap_content" >

    </RelativeLayout>

    <RelativeLayout

        android:id="@+id/relativeLayout2"

        android:layout_width="match_parent"

        android:layout_height="wrap_content" >

        <Button

            android:id="@+id/btn_add"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_alignParentLeft="true"

            android:layout_alignParentTop="true"

            android:text="Add" />

        <Button

            android:id="@+id/btn_delete"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_alignParentRight="true"

            android:layout_alignParentTop="true"

            android:text="Delete" />

    </RelativeLayout>

    <RelativeLayout

        android:id="@+id/relativeLayout3"

        android:layout_width="match_parent"

        android:layout_height="wrap_content" >

    </RelativeLayout>

    <LinearLayout

        android:id="@+id/linearLayout1"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:orientation="horizontal" >

        <ListView

            android:id="@+id/lv_main"

            android:layout_width="wrap_content"

            android:layout_height="fill_parent"

            android:layout_gravity="center" >

        </ListView>

    </LinearLayout>

</LinearLayout>

ListViewActivity.java

import java.util.ArrayList;

import java.util.Collections;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.ArrayAdapter;

import android.widget.Button;

import android.widget.EditText;

import android.widget.ListView;

import android.widget.Toast;

public class ListViewActivity  extends Activity {

    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

       

        final Button add_btn = (Button)findViewById(R.id.btn_add);

        final Button del_btn = (Button)findViewById(R.id.btn_delete);

        final ListView myListView = (ListView)findViewById(R.id.lv_main);

        final EditText et_main = (EditText)findViewById(R.id.et_main);

       

        final ArrayList<String> al = new ArrayList<String>();

        final ArrayAdapter<String> ad;

        ad = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,al);

        myListView.setAdapter(ad);

      

                

        add_btn.setOnClickListener(new OnClickListener()

        {

                                   

                                    public void onClick(View v)

                                    {

                              String str = et_main.getText().toString();

                              Integer cout = myListView.getCount()+ 1;

                              String str1 = cout.toString().concat("."+str);

                                      al.add(myListView.getCount(), str1);

                                      //Collections.sort(al);

                                      ad.notifyDataSetChanged();

                                      Toast.makeText(getApplicationContext(), "Data Saved", Toast.LENGTH_SHORT).show();

                                      et_main.setText(" ");

                                    }

                        });

     del_btn.setOnClickListener(new OnClickListener()

        {

                                   

                                    public void onClick(View v)

                                    {

                                                al.remove(al.size()-1);       

                                                ad.notifyDataSetChanged();

                                    }

                        });

    }

}

Result:

When you will click on Insert Button, the data insertion will be successfully. If you want to remove the data , just click on the delete button. It will remove from the last.

See here I am inserting the data , Putting Value(Name) : “Divya Bharati”. When you will click on the Add Button, it will insert into the list.

Check bellow, “Divya Bharati” added into the list.

See again bellow picture , after clicking on the delete button, “Divya Bharati” deleted as it was entered last.