swift5.1下拉列表
参考：LYDropListView
感兴趣的老表可以从git上搜下看下这个项目 不过他的是swift3.0 ，最新的xcode已经不支持了。。所以我修改兼容了下。。
进入正文
效果
用的核心三个类 可以把这个目录copy到工程直接使用
新建Group LyDropList
新建
//
// TDCommon.swift
// Tudou
//
// Created by discover on 2017/8/9.
// Copyright © 2017年 李雨. All rights reserved.
//
import UIKit
//适配参数
let iphone5 = UIScreen.instancesRespond(to:#selector(getter: UIScreen.main.currentMode)) ? __CGSizeEqualToSize(CGSize(width:960,height:1336), (UIScreen.main.currentMode?.size)!) : false
let iphone6 = UIScreen.instancesRespond(to:#selector(getter: UIScreen.main.currentMode)) ? __CGSizeEqualToSize(CGSize(width:750,height:1334), (UIScreen.main.currentMode?.size)!) : false
let iphone6p = UIScreen.instancesRespond(to:#selector(getter: UIScreen.main.currentMode)) ? __CGSizeEqualToSize(CGSize(width:1242,height:2208), (UIScreen.main.currentMode?.size)!) : false
let iphone6pBigMode = UIScreen.instancesRespond(to:#selector(getter: UIScreen.main.currentMode)) ? __CGSizeEqualToSize(CGSize(width:1125,height:2001), (UIScreen.main.currentMode?.size)!) : false
let iphoneX = UIScreen.instancesRespond(to:#selector(getter: UIScreen.main.currentMode)) ? __CGSizeEqualToSize(CGSize(width:1125,height:2436), (UIScreen.main.currentMode?.size)!) : false
func RGBA (r:CGFloat, g:CGFloat, b:CGFloat, a:CGFloat)->UIColor { return UIColor.init(red: r/255.0, green: g/255.0, blue: b/255.0, alpha: a) }
let kNaviHeight:CGFloat = iphoneX ? 88 : 64
let kTabbarHeight:CGFloat = 49
// 屏幕高度
let screenHeight = iphoneX ? UIScreen.main.bounds.height - 34 : UIScreen.main.bounds.height
// 屏幕宽度
let screenWidth = UIScreen.main.bounds.width
let suitParm:CGFloat = (iphone6p ? 1.12 : (iphone6 ? 1.0 : (iphone6pBigMode ? 1.01 : (iphoneX ? 1.0 : 0.85))))
新建
//
// LYDropListTItleView.swift
// LYDropListView
//
// Created by discover on 2017/9/28.
// Copyright © 2017年 LY. All rights reserved.
//
import UIKit
import SnapKit
typealias GesClosure = (_ selected:Bool)->Void
class LYDropListTItleView: UIView {
var label:UILabel!
var icon:UIImageView!
var ly_width:CGFloat?
var title:String?{
didSet{
self.ly_width = self.getLabWidth(labelStr: self.title!, font: UIFont.systemFont(ofSize: 14), height: 14) + 2
label.text = self.title
layout()
}
}
var _isSelect:Bool = false
var gesClosure:GesClosure?
var isSelected:Bool?{
didSet{
self._isSelect = isSelected!
if isSelected! {
UIView.animate(withDuration: 0.2, animations: {
self.icon.transform = CGAffineTransform.init(rotationAngle: CGFloat(Double.pi))
})
}else{
UIView.animate(withDuration: 0.2, animations: {
self.icon.transform = CGAffineTransform.identity
})
}
}
}
init(frame: CGRect,title:String) {
super.init(frame: frame)
self.title = title
self.ly_width = self.getLabWidth(labelStr: self.title!, font: UIFont.systemFont(ofSize: 14), height: 14) + 2
setUI()
layout()
setGes()
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func setGes(){
let ges = UITapGestureRecognizer.init(target: self, action: #selector(tapAction))
self.addGestureRecognizer(ges)
}
@objc func tapAction(){
self._isSelect = !self._isSelect
self.isSelected = self._isSelect
if (self.gesClosure != nil){
self.gesClosure!(self.isSelected!)
}
}
func setUI(){
label = UILabel()
addSubview(label)
label.font = UIFont.systemFont(ofSize: 14)
label.text = self.title
icon = UIImageView.init()
icon.image = UIImage.init(named:"下箭头灰")
addSubview(icon)
}
func layout(){
label.snp.removeConstraints()
icon.snp.removeConstraints()
label.snp.makeConstraints { (make) in
make.centerY.equalTo(self)
make.centerX.equalTo(self)
make.height.equalTo(14)
make.width.equalTo(ly_width!)
}
icon.snp.makeConstraints { (make) in
make.left.equalTo(label.snp.right).offset(2*suitParm)
make.centerY.equalTo(label)
make.width.equalTo(12)
make.height.equalTo(12)
}
}
func getLabWidth(labelStr:String,font:UIFont,height:CGFloat) -> CGFloat {
let statusLabelText: NSString = labelStr as NSString
let size = CGSize(width:900, height:height)
let dic = NSDictionary(object: font, forKey: NSAttributedString.Key.font as NSCopying)
let strSize = statusLabelText.boundingRect(with: size, options: .usesLineFragmentOrigin, attributes: dic as! [NSAttributedString.Key : Any], context: nil).size
return strSize.width
}
}
新建
//
// LYDropListView.swift
// LYDropListView
//
// Created by discover on 2017/9/28.
// Copyright © 2017年 LY. All rights reserved.
//
import UIKit
class LYDropListView: UIView,UITableViewDelegate,UITableViewDataSource{
fileprivate var cellid = "cellid"
lazy var titleArray = [String]()
lazy var tableArray = [[String]]()
var maskViewSS:UIView?
var selectClosure:((_ tag:Int,_ row:Int)->Void)?
init(frame: CGRect,tableArr:[[String]],selectClosure : @escaping (_ tag:Int,_ row:Int)->Void) {
super.init(frame: frame)
self.titleArray = tableArr.map({ (arr) -> String in
return arr[0]
})
self.tableArray = tableArr
self.selectClosure = selectClosure
self.backgroundColor = UIColor.white
self.setTitleButton()
setMaskView()
setTableView()
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func setMaskView(){
maskViewSS = UIView.init(frame: CGRect.init(x: 0, y: 40, width: screenWidth, height: screenHeight-40-kNaviHeight))
maskViewSS?.backgroundColor = RGBA(r: 0, g: 0, b: 0, a: 0.3)
let tap = UITapGestureRecognizer.init(target: self, action: #selector(tapAction))
maskViewSS?.alpha = 0
maskViewSS?.addGestureRecognizer(tap)
}
@objc func tapAction(){
// self.maskViewSS?.removeFromSuperview()
for i in 0..1{
drop.isSelected = false
// UIView.animate(withDuration: 0.2, animations: {
// tableView.frame = CGRect.init(x: 0, y: 40, width: screenWidth, height: 1)
// })
UIView.animate(withDuration: 0.2, animations: {
tableView.frame = CGRect.init(x: 0, y: 40, width: screenWidth, height: 1)
self.maskViewSS?.alpha = 0
}, completion: { (idCom) in
self.maskViewSS?.removeFromSuperview()
})
}
}
}
func setTitleButton(){
let totalArry:Array> = self.tableArray
let width:CGFloat = screenWidth/CGFloat(titleArray.count)
for i in 0..Void in
self.insertSubview(self.maskViewSS!, at: 0)
UIView.animate(withDuration: 0.2, animations: {
self.maskViewSS?.alpha = 1
})
if select {
for n in 0.. screenHeight - kNaviHeight - 40 ?screenHeight - kNaviHeight - 40:(CGFloat(arr.count)*40.0)
UIView.animate(withDuration: 0.2, animations: {
tableView.frame = CGRect.init(x: 0, y: 40, width: screenWidth, height:animHeight )
})
}else{
UIView.animate(withDuration: 0.2, animations: {
tableView.frame = CGRect.init(x: 0, y: 40, width: screenWidth, height: 1)
})
}
}
}else{
let tableView = self.viewWithTag(100+i) as! UITableView
UIView.animate(withDuration: 0.2, animations: {
tableView.frame = CGRect.init(x: 0, y: 40, width: screenWidth, height: 1)
self.maskViewSS?.alpha = 0
}, completion: { (idCom) in
self.maskViewSS?.removeFromSuperview()
})
}
}
self.addSubview(view)
}
}
func setTableView(){
let totalArry:Array> = self.tableArray
for i in 0.. UIView? {
var view = super.hitTest(point, with: event)
if view == nil {
for subView in self.subviews {
let tp = subView.convert(point, from: self)
if subView.bounds.contains(tp) {
view = subView
}
}
}
return view
}
}
extension LYDropListView{
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let drop = self.viewWithTag(tableView.tag-100+1000) as! LYDropListTItleView
let cell = tableView.cellForRow(at: indexPath)
drop.title = cell?.textLabel?.text
if self.selectClosure != nil {
self.selectClosure!(tableView.tag,indexPath.row)
}
drop.isSelected = false
// self.maskViewSS?.removeFromSuperview()
// UIView.animate(withDuration: 0.2, animations: {
// tableView.frame = CGRect.init(x: 0, y: 40, width: screenWidth, height: 1)
// })
UIView.animate(withDuration: 0.2, animations: {
tableView.frame = CGRect.init(x: 0, y: 40, width: screenWidth, height: 1)
self.maskViewSS?.alpha = 0
}, completion: { (idCom) in
self.maskViewSS?.removeFromSuperview()
})
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
let drop = self.viewWithTag(tableView.tag-100+1000) as! LYDropListTItleView
if drop.isSelected == nil {
return 0
}else{
return drop.isSelected! ? self.tableArray[tableView.tag-100].count : 0
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: cellid, for: indexPath) as UITableViewCell
cell.textLabel?.font = UIFont.systemFont(ofSize: 14)
cell.textLabel?.text = tableArray[tableView.tag - 100][indexPath.row]
return cell
}
}
使用也很方便
//
// ViewController.swift
// LYDropListView
//
// Created by discover on 2017/9/28.
// Copyright © 2017年 LY. All rights reserved.
//
import UIKit
class ViewController: UIViewController {
let moneyArray:[String] = ["不限金额","0~1000元","1001~2000元","2001~3000元","3001~5000元","5000元以上"]
let limitArray:[String] = ["不限期限","0~14天","15~30天","30~60天","60~90天","90~180天","180~360天","360天以上"]
let sortArray:[String] = ["默认排序","贷款成功率 ↓","日费率 ↑"]
lazy var dropList:LYDropListView = {
//传入一个二维数组即可
let drop = LYDropListView.init(frame: CGRect.init(x: 0, y: kNaviHeight, width: screenWidth, height: 40), tableArr: [self.moneyArray,self.limitArray,self.sortArray], selectClosure: { (tag, row) in
//tag - 100是第几个标题菜单，row是菜单第几行
print(tag-100,row)
})
return drop
}()
override func viewDidLoad() {
super.viewDidLoad()
view.addSubview(dropList)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}