listview in android studio example with source code

How to display item listview in android?

In this post, we will display the listview using a simple method.

Each item is displayed as a vertically scrollable list.

It is easy to display the listview of each item with an automatically scrollable.

This blog post is rendered easy to explain. We will use an adapter to automatically insert items into the list.

For this, we will first type Java logic code in the default activity such as MainActivity.xml.

activity_main.xml

activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.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=".MainActivity">

    <ListView
        android:id="@+id/listview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_editor_absoluteX="180dp"
        app:layout_editor_absoluteY="136dp" />
</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.java

MainActivity.java
package com.pd.listview;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
ListView listView;
TextView textView;
String[]list={"one","two","three","four","five","six","seven", "eight","nine","ten"};
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        listView=(ListView)findViewById(R.id.listview);
        textView=(TextView)findViewById(R.id.textview);

        final ArrayAdapter<String>adapter=new ArrayAdapter<String>(this,R.layout.singledata,R.id.textview,list);
        listView.setAdapter(adapter);

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            String value=adapter.getItem(position);
                Toast.makeText(MainActivity.this,value, Toast.LENGTH_SHORT).show();
            }
        });
    }
}

Create dimens xml file 

dimens.xml

dimens.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <dimen name="mr">5dp</dimen>
    <dimen name="mt">10dp</dimen>
    <dimen name="ml">25dp</dimen>
    <dimen name="ts">20dp</dimen>
</resources>

create a single data file to create automatically listed data using an Adapter.

singledata.xml

singledata.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">

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="@dimen/mt"
        android:src="@drawable/ic_baseline_arrow_forward_ios_24" />

    <TextView
        android:id="@+id/textview"
        android:layout_width="wrap_content"
        android:layout_height="50dp"
        android:layout_marginLeft="@dimen/ml"
        android:layout_marginTop="@dimen/mt"
        android:text="@string/app_name"
        android:textSize="@dimen/ts" />

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignEnd="@+id/textview"
        android:layout_alignParentEnd="true"
        android:layout_marginTop="@dimen/mt"
        android:layout_marginRight="@dimen/mr"
        android:src="@drawable/ic_baseline_add_24" />

</RelativeLayout>

If you don't understand 

watch the video 

https://youtu.be/ixrnJD3-FGY 

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