Practical-08

Mobile Application

Practical List

Create an android program that will read phonebook contacts using content providers and display them in a list.

Steps

1. Create a new Android project in Android Studio.
2. Open the activity_main.xml layout file.
3. Add a ListView element to the layout with the following attributes:
   • android:id="@+id/listView"
   • android:layout_width="match_parent"
   • android:layout_height="match_parent"
4. Open the MainActivity.java file.
5. Inside the onCreate method, add the following code to set the content view to the activity_main.xml layout:

   setContentView(R.layout.activity_main);
6. Create a new method called displayContacts to fetch and display the phonebook contacts:

   private void displayContacts() {
       List<Contact> contactList = getContacts();
       ContactListAdapter adapter = new ContactListAdapter(this, contactList);
       ListView listView = findViewById(R.id.listView);
       listView.setAdapter(adapter);
   }
7. Create a new class called Contact to represent a contact object with the following attributes:
   • String name
   • String phoneNumber
8. Create a new class called ContactListAdapter that extends ArrayAdapter<Contact> and implements the necessary methods to display the contact items in the list view.
9. Implement the getContacts method to fetch the phonebook contacts using content providers and return a list of contact objects.
10. Run the application on an Android device or emulator.
11. The list view should display the phonebook contacts with their names and phone numbers.