How to programmatically scroll to a specific position in listView in Android?


This example demonstrates how do I programmatically scroll to a specific position in android.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
   xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools="http://schemas.android.com/tools"
   android:id="@+id/rl"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:padding="10dp"
   tools:context=".MainActivity">
   <Button
      android:id="@+id/btn"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:text="ListView Scroll To Position 22" />
   <ListView
      android:id="@+id/listView"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_below="@id/btn" />
</RelativeLayout>

Step 3 − Add the following code to src/MainActivity.java

import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class MainActivity extends Activity {
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      final ListView listView = findViewById(R.id.listView);
      Button btn = findViewById(R.id.btn);
      String[] footballPlayers = new String[] {
         "Cristiano Ronaldo",
         "Lionel Messi",
         "Neymar Jnr",
         "Eden Hazard",
         "Isco",
         "Gareth Bale",
         "Sergio Buesquets",
         "Zlatan Ibrahimovic",
         "GG Buffon",
         "Iker Casillas",
         "Rafael Varane",
         "Zinedine Zidane",
         "Menphis Depay",
         "Gerard Pique",
         "Victor Valdes",
         "David De Gea",
         "Mo Salah",
         "Ronaldinio",
         "Marco Rues",
         "Asencio",
         "Luis Figo",
         "Sergio Ramos",
         "Maldini",
         "Marcelo",
         "Karim Benzema",
         "Sir Alex Firguson"
      };
      final List<String> footballPlayers = new ArrayList<>(Arrays.asList(footballPlayers));
      final ArrayAdapter<String> arrayAdapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, footballPlayers);
      listView.setAdapter(arrayAdapter);
      btn.setOnClickListener(new View.OnClickListener() {
         @Override
         public void onClick(View v) {
            listView.smoothScrollToPosition(22);
         }
      });
   }
}

Step 4 − Add the following code to androidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="app.com.sample">
   <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=".MainActivity">
         <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
         </intent-filter>
      </activity>
   </application>
</manifest>

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen −

Click here to download the project code.

raja
Published on 05-Aug-2019 12:08:18
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