iOS16适配：UIFindInteraction的使用

UIFindInteraction是iOS16中新增的文本查找交互功能，用于文本内容的查找与替换，它会弹出一个查找面板（键盘上方）输入需要搜索的关键字即可进行查找与替换操作。现有UITextView,WKWebView,PDFView已经默认支持了，使用时需要将isFindInteractionEnabled属性设置为true。

Simulator Screen Shot - iPhone 14 Pro - 2022-10-19 at 14.29.25.png

import UIKit

class ViewController: UIViewController {

    lazy var textView: UITextView = {
        let _textView = UITextView(frame: CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: 600.0))
        _textView.text = "为了给您提供更好的内容和产品体验，我们诚邀您参与用户调研！希望您能抽出几分钟时间，将您的感受和建议告诉我们，我们非常重视用户的宝贵意见，期待您的参与！"
        _textView.center = self.view.center
        //打开UIFindInteraction
        if #available(iOS 16.0, *) {
            _textView.isFindInteractionEnabled = true
            //预填充查找字段
            _textView.findInteraction?.searchText = "哈哈哈"
            //预填充系统查找面板的替换文本字段
            _textView.findInteraction?.replacementText = "你好，你好"
        }
        let _longPress = UILongPressGestureRecognizer(target: self, action: #selector(handleLongPress))
        _textView.addGestureRecognizer(_longPress)
        return _textView
    }()
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
        self.view.addSubview(self.textView)
    }
    
    @objc func handleLongPress(_ recognizer: UIGestureRecognizer) {
        if #available(iOS 16.0, *) {
            self.textView.findInteraction?.presentFindNavigator(showingReplace: true)
        } else {
            // Fallback on earlier versions
        }
    }

    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        if #available(iOS 16.0, *) {
            self.textView.findInteraction?.dismissFindNavigator()
        } else {
            // Fallback on earlier versions
        }
    }

}