直接上代碼

//
//  ZYFloatPlayerView.swift
//  SoChat
//
//  Created by APPLE on 2023/8/9.
//

import UIKit

class ZYFloatPlayerView: UIView {
    
    private var touchX : CGFloat = 0
    private var touchP : CGPoint = CGPoint(x: 0, y: 0)
    private var touchY : CGFloat = 0

    override init(frame: CGRect) {
        super.init(frame: frame)
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
}
/// 懸浮窗口功能實(shí)現(xiàn)
extension ZYFloatPlayerView {
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        super.touchesBegan(touches, with: event)
        if let touch = touches.first {
            let touchPoint =  touch.location(in: self)
            touchX = touchPoint.x
        }
    }

    override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
        super.touchesMoved(touches, with: event)
        if let touch = touches.first {
            let currentPosition =  touch.location(in: self)
            let offsetX = currentPosition.x - touchP.x - self.frame.size.width/2
            let offsetY = currentPosition.y - touchP.y - self.frame.size.height/2
            
          //移動(dòng)后的按鈕中心坐標(biāo)
            let centerX = self.center.x + offsetX
            var centerY = self.center.y + offsetY
            self.center = CGPoint(x: centerX, y: centerY)
            //父試圖的寬高
            let superViewWidth = self.superview!.frame.width
            let superViewHeight = self.superview!.frame.height
            ///
            
            let btnX = self.frame.origin.x
            let btnY = self.frame.origin.y
            let btnW = self.frame.size.width
            let btnH = self.frame.size.height
            
//            if centerY < GlobalNavAddStatusHeight + btnH/2 {
//                centerY = GlobalNavAddStatusHeight + btnH/2
//            }
//
//            if centerY > superViewHeight - GlobalTabBarAndSafeAreaBottomHeight - btnH/2 {
//                centerY = superViewHeight -  GlobalNavAddStatusHeight + btnH/2
//            }
            
            //x軸左右極限坐標(biāo)
            if btnX > superViewWidth {
                //按鈕右側(cè)越界
                let centerX = superViewWidth - btnW
                self.center = CGPoint(x: centerX, y: centerY )
            }else if (btnX < 0){
                //按鈕左側(cè)越界
                let centerX = btnW * 0.5
                self.center = CGPoint(x: centerX, y: centerY)
            }
            
            let judgeSuperViewHeight = superViewHeight - GlobalTabBarAndSafeAreaBottomHeight - btnH*0.5

            //y軸上下極限坐標(biāo)
            if btnY <= GlobalNavAddStatusHeight + btnH*0.5 {
                //按鈕頂部越界
//                centerY = btnH * 0.5
                let x = centerX
                let y = btnH * 0.5 + GlobalNavAddStatusHeight // 底部距離 tabbar + 安全距離
                self.center = CGPoint(x: x, y: y)
            } else if btnY > judgeSuperViewHeight {
                //按鈕底部越界
                let y = superViewHeight - btnH * 0.5
                let x = btnX + self.frame.size.height/2
                self.center = CGPoint(x:x, y:y)
            }
        }
    }

    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
        let btnWidth = self.frame.size.width
        let btnHeight = self.frame.size.height
        let btnY = self.frame.origin.y
        let btnX = self.frame.origin.x
        
        let minDistance:CGFloat = 2

        //結(jié)束move的時(shí)候陕见，計(jì)算移動(dòng)的距離是>最低要求甥温，如果沒(méi)有，就調(diào)用按鈕點(diǎn)擊事件
        let isOverX = abs(btnX - touchX) > minDistance
        let isOverY = abs(btnY - touchY) > minDistance

        if isOverX || isOverY {
            //超過(guò)移動(dòng)范圍就不響應(yīng)點(diǎn)擊 - 只做移動(dòng)操作
            super.touchesCancelled(touches, with: event)
        }else{
            super.touchesEnded(touches, with: event)
        }

        if self.center.x >= self.superview!.frame.size.width/2 {
            UIView.animate(withDuration: 0.5) {
                let btnX = self.superview!.frame.size.width - btnWidth
                self.frame =  CGRect(x: btnX, y: btnY, width: btnWidth, height: btnHeight)
            }
        } else {
            UIView.animate(withDuration: 0.5) {
                let btnX:CGFloat = 0
                self.frame =  CGRect(x: btnX, y: btnY, width: btnWidth, height: btnHeight)
            }
        }
    }
}