Listview Example

Hello,

This article is for Beginner and people who want to learn Android .This article is about display text in listview . when we clicked on list item it shows Toast Message.

1. XML File .

activity_main -

<LinearLayout
    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:orientation="vertical"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
<ListView
    android:id="@+id/showdata"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />
</LinearLayout>

2.Java File
MainActivity -
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
//declare variable
ListView showdata;
//string array
String[] stringsvalue={"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
   
        showdata=findViewById(R.id.showdata);
        //instance of array adapter class to bind data
        ArrayAdapter<String> arrayAdapter=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,stringsvalue);
        showdata.setAdapter(arrayAdapter);
        //listview setitemonclicklistener
        showdata.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
               // Toast
                Toast.makeText(MainActivity.this, ""+position, Toast.LENGTH_SHORT).show();
            }
        });

    }
}