How to display a listView in an android alert dialog?

This example demonstrates how do I display a listView in an android aler dialog.

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:layout_width="match_parent"    android:layout_height="match_parent"    tools:context=".MainActivity">    <Button       android:id="@+id/btnClick"       android:textSize="12sp"       android:textStyle="bold"       android:onClick="openDialog"       android:text="Click here to get ListView in Alert Dialog"       android:layout_width="wrap_content"       android:layout_height="wrap_content"       android:layout_centerInParent="true" /> </RelativeLayout>

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

import android.app.AlertDialog; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.ArrayAdapter; import android.widget.ListView; public class MainActivity extends AppCompatActivity {    String[] names = {"India", "Brazil", "Argentina",       "Portugal", "France", "England", "Italy"};    ArrayAdapter<String> adapter;    ListView listView;    @Override    protected void onCreate(Bundle savedInstanceState) {       super.onCreate(savedInstanceState);       setContentView(R.layout.activity_main);    }    public void openDialog(View v){       AlertDialog.Builder alertDialog = new       AlertDialog.Builder(this);       View rowList = getLayoutInflater().inflate(R.layout.row, null);       listView = rowList.findViewById(R.id.listView);       adapter = new ArrayAdapter<>(this, android.R.layout.simple_list_item_1, names);       listView.setAdapter(adapter);       adapter.notifyDataSetChanged();       alertDialog.setView(rowList);       AlertDialog dialog = alertDialog.create();       dialog.show();    } }

Step 4 − Create a layout resource file(row.xml) and add the following code −

<?xml version="1.0" encoding="utf-8"?> <RelativeLayout    xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="match_parent"    android:layout_height="match_parent">    <Button       android:id="@+id/button"       android:layout_width="wrap_content"       android:layout_height="wrap_content"       android:text="ALL COUNTRIES"       android:layout_alignParentBottom="true"       android:layout_alignParentStart="true"       android:layout_alignParentEnd="true" />    <ListView       android:id="@+id/listView"       android:layout_width="wrap_content"       android:layout_height="wrap_content"       android:layout_alignParentTop="true"       android:layout_alignParentStart="true"       android:layout_above="@id/button">    </ListView> </RelativeLayout>

Step 5 − 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 −