VisionKit 的 Visual Look Up 模式

visual-look-up-demo.swift

import UIKit
import VisionKit

class ViewController: UIViewController {

    var imageView: UIImageView?
    
    override func viewDidLoad()  {
        
        super.viewDidLoad()
        self.imageView = UIImageView(frame: CGRect.zero)
        self.imageView?.image = UIImage(named: "cat2")
        self.view.addSubview(self.imageView!)
        
        Task {
            
            await self.initAnalysis()
            
        }
        

    }
        
    func initAnalysis() async  {

        let interaction = ImageAnalysisInteraction()
        self.imageView?.addInteraction(interaction)

        // 识别模式设置成 .visualLookUp
        let configuration = ImageAnalyzer.Configuration([.visualLookUp])

        let analyzer = ImageAnalyzer()
        let analysis = try? await analyzer.analyze(self.imageView!.image!, configuration: configuration)
        interaction.analysis = analysis
        
        // visualLookUp 模式， 通过点击图片上的识别按钮弹出内容
//        interaction.preferredInteractionTypes = .visualLookUp
        
        // Subject lifting 模式，通过长按然后点击菜单弹出内容
        interaction.preferredInteractionTypes = .imageSubject
        
    }
    
    
    override func viewDidLayoutSubviews() {
        
        super.viewDidLayoutSubviews()
        self.imageView?.frame = CGRect(x: 0, y: 0, width: self.view.frame.size.width, height: self.view.frame.size.width)
        self.imageView?.center = CGPoint(x: self.view.frame.size.width / 2, y: self.view.frame.size.height / 2)
        
    }

}