Integrating CarPlay with Flutter: A Step-by-Step Guide

Setting Expectations

Before diving into the technical aspects of integrating CarPlay with Flutter, it’s essential to understand the requirements and limitations of this process. To develop a CarPlay-enabled app, you’ll need to meet the following conditions:

• Your app must be approved by Apple
• Your app must fall into one of the predefined categories (e.g., audio, communication, navigation, etc.)
• You must have a thorough understanding of Apple’s CarPlay App Programming Guide

Adding CarPlay to Your Flutter Project

To get started, you’ll need to add the flutter_carplay package to your project. This can be done by adding the following line to your pubspec.yaml file:

dependencies:
  flutter_carplay: ^1.0.0

Next, run the flutter pub get command to retrieve the package. This will create a Podfile that helps integrate the native parts of flutter_carplay with your project.

Modifying Your XCode Project

Since CarPlay is a native iOS feature, you’ll need to make changes to your XCode project. Open the ios folder in XCode, navigate to Runner > Runner > AppDelegate, and replace the contents of the application function with a simple return true;.

Setting Up Entitlements

To permit your app to interact with the CarPlay simulator on your computer, you’ll need to configure entitlements. Within XCode, click on Runner, then click on Signing & Certificates, and finally click on the + button to the left of All. Select Keychain Sharing and add a new entitlement depending on your app type.

Calling CarPlay Functionality from Your Flutter App

To add CarPlay functionality to your Flutter app, you’ll need to create a new FlutterCarplay object. This object will handle your connection to CarPlay and allow you to control what’s happening within your CarPlay experience.

Setting a RootTemplate

Within your main.dart file, create a new FlutterCarplay object and set up the RootTemplate with some options to tap on. This can be done by creating a grid template, setting a title, and describing some buttons that you’d like to be pressed.

import 'package:flutter_carplay/flutter_carplay.dart';

void main() {
  FlutterCarplay flutterCarplay = FlutterCarplay();
  flutterCarplay.setRootTemplate(
    CPGridTemplate(
      title: 'My App',
      gridButtons: [
        CPGridButton(title: 'Button 1', image: 'image1'),
        CPGridButton(title: 'Button 2', image: 'image2'),
      ],
    ),
  );
}

Implementing ShowOrderingConfirmationSheet

To display a confirmation message when a food item is opened, implement the showOrderingConfirmationSheet function. This can be done by calling native functionality within your Flutter app, such as adding or removing items from an internal database.

void showOrderingConfirmationSheet() {
  // Call native functionality to display the confirmation sheet
}

By following these steps, you can successfully integrate CarPlay with your Flutter app. Remember to start working on getting Apple’s approval as soon as possible, as this can be a time-consuming process. Adding CarPlay to your Flutter app can enhance the user experience and provide a seamless integration between cars and mobile devices.