To initialize your SDK and start interacting with Appwrite services, you need to add a new Apple platform to your project. To add a new platform, go to your Appwrite console, select your project (create one if you haven't already), and click the 'Add Platform' button on the project Dashboard.
From the options, choose to add a new **iOS**, **macOS**, **watchOS** or **tvOS** platform and add your app credentials.
Add your app <u>name</u> and <u>bundle identifier</u>. Your bundle identifier can be found in your Xcode project file or your `Info.plist` file. By registering a new platform, you are allowing your app to communicate with the Appwrite API.
### Registering URL schemes
In order to capture the Appwrite OAuth callback url, the following URL scheme needs to be added to project. You can add this from Xcode by selecting your project file, then the target you wish to use OAuth with. From the `Info` tab, expand the `URL types` section and add your Appwrite instance domain for the `Identifier`, and `appwrite-callback-[PROJECT-ID]` for the `URL scheme`. Be sure to replace the **[PROJECT_ID]** string with your actual Appwrite project ID. You can find your Appwrite project ID in your project settings screen in the console. Alternatively, you can add the following block directly to your targets `Info.plist` file:
```xml
<key>CFBundleURLTypes</key>
<array>
<dict>
<key>CFBundleTypeRole</key>
<string>Editor</string>
<key>CFBundleURLName</key>
<string>io.appwrite</string>
<key>CFBundleURLSchemes</key>
<array>
<string>appwrite-callback-[PROJECT-ID]</string>
</array>
</dict>
</array>
```
Next we need to add a hook to save cookies when our app is opened by its callback URL.
### Registering an OAuth handler view
> If you're using UIKit, you can skip this section.
> If you're using SwiftUI, you can skip this section.
For UIKit, you need to add the following function to your `SceneDelegate.swift`. If you have already defined this function, you can just add the contents from below.
Once your SDK object is initialized, create any of the Appwrite service objects and choose any request to send. Full documentation for any service method you would like to use can be found in your SDK documentation or in the [API References](https://appwrite.io/docs) section.
When an error occurs, the Appwrite Apple SDK throws an `AppwriteError` object with `message` and `code` properties. You can handle any errors in a catch block and present the `message` or `localizedDescription` to the user or handle it yourself based on the provided error information. Below is an example.