演示：
代码地址： https://github.com/RainManGO/PanView
主要在Xib中使用：xib的view直接绑定panview即可。如图：
代码：
代码语言：javascript复制//
// PanView.swift
//
//
// Created by ZY on 2018/5/23.
// Copyright © 2018年 zy. All rights reserved.
//
import UIKit
enum slideStates {
case top
case bottom
}
class PanView: UIView {
var panViewStates: slideStates = .bottom //默认状态是在底部
var upPointY = 0.0 //最高值
var middleY = 0.0 //滑动view 中间判定值
var bottionY = 0.0 //最低值
var currentY = 0.0 //当前的Y值
let maxtop = 80.0
override func awakeFromNib() {
super.awakeFromNib()
countY()
addPanRecoginer()
addTapRecoginer()
}
}
//计算数据值
extension PanView {
func countY(){
upPointY = maxtop //最高值
middleY = Double(((self.superview?.frame.height)! - CGFloat(maxtop))/2) //滑动view 中间判定值
bottionY = Double(self.frame.minY) //最低值
currentY = bottionY
}
}
//手势
extension PanView {
func addPanRecoginer(){
let panRecoginer = UIPanGestureRecognizer.init(target: self, action: #selector(panHandle(pan:)))
self.addGestureRecognizer(panRecoginer)
}
func addTapRecoginer(){
let tapRecoginer = UITapGestureRecognizer.init(target: self, action: #selector(tapHandle(tap:)))
self.addGestureRecognizer(tapRecoginer)
}
}
//事件
extension PanView {
@objc func panHandle(pan:UIPanGestureRecognizer){
let translation = pan.translation(in: self.superview)
let transY = Double(translation.y)
if pan.state == .changed {
if Double(self.frame.origin.y) < upPointY{
currentY = upPointY
}else if Double(self.frame.origin.y) > bottionY{
currentY = bottionY
}else{
self.frame.origin.y = CGFloat(currentY transY)
}
}else if pan.state == .ended {
if (currentY transY > upPointY) && (currentY transY < middleY) { //如果当前位置在最上部和中线中间
currentY = upPointY
}else if (currentY transY < bottionY) && (currentY transY > middleY){
currentY = bottionY
}else if currentY transY < upPointY{
currentY = upPointY
}else{
currentY = bottionY
}
UIView.animate(withDuration: 0.5, delay: 0, usingSpringWithDamping: 10, initialSpringVelocity: 5, options: [], animations: {
self.frame.origin.y = CGFloat(self.currentY)
}) { (complete) in
}
currentY = Double(self.frame.origin.y)
}
}
//待扩展tap
@objc func tapHandle(tap:UITapGestureRecognizer){
}
}
