ListView in Android is a ViewGroup that is used to display items in rows and has an adapter that inserts the desired elements into the list. Once the items are inserted into the ListView, they can be clicked and the desired action can be performed.
As multiple operations can be performed on a ListView, in this article, we will show you how you could handle a long press on the items in ListView.
Step by Step Implementation
Step 1: Create a New Project in Android Studio
To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio. We demonstrated the application in Kotlin, so make sure you select Kotlin as the primary language while creating a New Project.
Step 2: Working with the activity_main.xml file
Navigate to the app > res > layout > activity_main.xml and add the below code to that file. Below is the code for the activity_main.xml file. Add a ListView in the layout.
<? xml version = "1.0" encoding = "utf-8" ?>
< RelativeLayout
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" />
</ RelativeLayout >
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Step 3: Working with the MainActivity.kt file
Go to the MainActivity.kt file and refer to the following code. Below is the code for the MainActivity.kt file. Comments are added inside the code to understand the code in more detail.
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.AdapterView
import android.widget.ArrayAdapter
import android.widget.ListView
import android.widget.Toast
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super .onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
// Create a list of items
val mCity = arrayOf( "Delhi" , "Mumbai" , "Hyderabad" , "Pune" , "Bengaluru" , "Chennai" , "Kolkata" , "Jaipur" , "Lucknow" , "Bhopal" )
// Declare and initialize the ListView
val mListView: ListView = findViewById(R.id.listView)
// Create adapter for the list view
val mAdapter: ArrayAdapter<*> = ArrayAdapter<Any?>( this , android.R.layout.simple_list_item_1, mCity)
mListView.adapter = mAdapter
// Handle long press on the ListView item
mListView.onItemLongClickListener = AdapterView.OnItemLongClickListener { _, _, index, _ ->
Toast.makeText(applicationContext, "Long clicked on ${mCity[index]}" , Toast.LENGTH_SHORT).show()
true
}
}
} |
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState)
{
// Call the superclass onCreate method
super .onCreate(savedInstanceState);
// Set the layout for the activity
setContentView(R.layout.activity_main);
// Create a list of items to be displayed
String[] mCity
= { "Delhi" , "Mumbai" , "Hyderabad" ,
"Pune" , "Bengaluru" , "Chennai" ,
"Kolkata" , "Jaipur" , "Lucknow" ,
"Bhopal" };
// Declare and initialize the ListView
ListView mListView
= (ListView)findViewById(R.id.listView);
// Create an adapter for the list view
ArrayAdapter mAdapter = new ArrayAdapter(
this , android.R.layout.simple_list_item_1,
mCity);
// Set the adapter for the list view
mListView.setAdapter(mAdapter);
// Handle long press on an item in the ListView
mListView.setOnItemLongClickListener(
new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(
AdapterView<?> parent, View view,
int index, long id)
{
// Show a Toast message with the name of
// the city
Toast
.makeText(getApplicationContext(),
"Long clicked on "
+ mCity[index],
Toast.LENGTH_SHORT)
.show();
return true ;
}
});
}
} |
Output:
You can see that upon long press on any element, a message about the items is displayed. You can customize the operation to perform any desired action.