A simple app that uses the iPhone or iPad camera to detect faces and automatically focus on them.
This app leverages Apple’s AVFoundation and Vision frameworks. It uses AVFoundation to access the default (main) camera through the AVCaptureSession() class, which manages multiple input sources (such as microphones or cameras) and outputs.
On startup, the app requests permission to use the camera. Note: camera permission management is not fully implemented, so if the user denies access, the app may crash.
The live camera feed is displayed on the screen using AVCaptureVideoPreviewLayer(). Each captured frame is processed using the Vision framework, which provides built-in face detection algorithms. When a face is detected, the app adjusts the camera focus accordingly.