iOS中UITableView经常会出现需要对cell进行编辑，全选，删除等操作，在navigationItem的BarButtonItems上加载按钮，效果图如下
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我这里是，删除了现有的，如果还有数据，会继续加载，看之前写的上拉刷新跟下拉加载更多，上代码，代码里把上拉刷新，下拉加载代码去掉了，如有需要完整可以留言或私聊我
//
// MESsagneVC.swift
// ios
//
// Created by 李鑫豪 on 2018/8/16.
// Copyright © 2018年 李鑫豪. All rights reserved.
//
import UIKit
import SwiftyJSON
import ESPullToRefresh
class MESsagneVC: UIViewController,UITableViewDelegate,UITableViewDataSource{
//懒加载
lazy var myTableView: UITableView = {
let vc = UITableView()
vc.isEditing = false//默认设为不可编辑。点击编辑才可编辑
return vc
}()
var pageNumber = 2 //第一次加载为1，因为打开界面的时候已经加载第一页了，默认下拉的时候加载第二页
var messageCount = 0 //初始数
var messageOriginalCount = 0 //加载时的原始数量
//编辑按钮
lazy var rightBtn: UIButton = {
let btn = UIButton()
btn.titleLabel?.font = UIFont.systemFont(ofSize: 16)
btn.setTitle("编辑", for: .normal)//默认为编辑
btn.setTitle("完成", for: .selected)//点击之后为完成
btn.setTitleColor(UIColor.blue, for: .normal)
btn.setTitleColor(UIColor.blue, for: .selected)
btn.addTarget(self, action: #selector(rightBtnAction), for: .touchUpInside)
return btn
}()
//删除按钮
lazy var deleteBtn: UIButton = {
let btn = UIButton()
btn.titleLabel?.font = UIFont.systemFont(ofSize: 16)
btn.setTitle("删除", for: .normal)//默认为删除
btn.setTitleColor(UIColor.blue, for: .normal)
btn.addTarget(self, action: #selector(deleteBtnAction), for: .touchUpInside)
return btn
}()
//全选按钮
lazy var allBtn: UIButton = {
let btn = UIButton()
btn.titleLabel?.font = UIFont.systemFont(ofSize: 16)
btn.setTitle("全选", for: .normal)//默认为全选
btn.setTitle("取消", for: .selected)//点击全选之后为取消
btn.setTitleColor(UIColor.blue, for: .normal)
btn.setTitleColor(UIColor.blue, for: .selected)
btn.isHidden = true //默认不显示全选
btn.addTarget(self, action: #selector(allBtnAction), for: .touchUpInside)
return btn
}()
var value : [JSON] = []//result数组
var messageData :[MESsageModel] = []//数据源
var selectArray :[MESsageModel] = []//选择数据数组
func getCooksData(isDeletALL:Bool,pageNumber:Int,pageSize:Int,completed:@escaping ()->Void) {
// isDeletALL：是否删除数据源重新加载数据
//pageNumber：加载页数
//pageSize：每页的数据数。pageNumber，pageSize都是服务器的参数
api.message_page_app(classification: -1, pageNumber: pageNumber, pageSize: pageSize){
[weak self] result in
guard let `self` = self else {return}
if isDeletALL{
self.messageData = []
}
self.messageOriginalCount = self.messageCount
self.value = result["rows"].arrayValue
for item in self.value
{
//处理返回的服务器返回的result 这里因人而异
let message = MESsageModel()
message.title = item["title"].stringValue
message.content = item["content"].stringValue
message.createTime = item["createTime"].stringValue
message.id = item["id"].intValue
self.messageData.append(message)
}
self.messageCount = self.messageData.count
self.myTableView.reloadData()
completed()
}
}
override func viewDidLoad() {
super.viewDidLoad()
//设置数据源，代理
myTableView.dataSource = self
myTableView.delegate = self
//布局
self.view.addSubview(myTableView)
myTableView.snp.makeConstraints{
make in
make.top.equalToSuperview().offset(tableNaiHeight)
make.bottom.equalToSuperview()
make.left.equalToSuperview()
make.right.equalToSuperview()
}
//设置navigationItem.rightBarButtonItems为编辑，全选，默认不加载删除按钮
navigationItem.rightBarButtonItems = [UIBarButtonItem(customView: rightBtn),UIBarButtonItem(customView: allBtn)]
//下面为获取数据
getCooksData(isDeletALL: true,pageNumber: 1,pageSize: 20,completed: {})
navigationItem.title = "消息"
}
override func viewWillAppear(_ animated: Bool) {
self.navigationController?.setNavigationBarHidden(false, animated: true)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Target
@objc private func rightBtnAction(){
self.selectArray.removeAll()//点击编辑之后要把选择数据源为空，因为默认点击全选时所有都是未选中的
rightBtn.isSelected = !rightBtn.isSelected//设置选择状态
allBtn.isSelected = !rightBtn.isSelected//设置全选按钮选择状态为选中即是全选
allBtn.isHidden = !rightBtn.isSelected//设置是否隐藏全选按钮
if rightBtn.isSelected {
//如果点击编辑按钮，则rightBtn.isSelected为true，加载删除button
self.navigationItem.leftBarButtonItem = UIBarButtonItem(customView: deleteBtn)
myTableView.setEditing(true, animated: true)//设置myTableView为可编辑状态
} else {
//else则为再次点击，恢复成原状，把删除button移除，设置myTableView为不可编辑状态，如果不移除删除button，删除button会占用navigationController的默认返回按钮
self.navigationItem.leftBarButtonItems = []
myTableView.setEditing(false, animated: true)
}
}
@objc private func deleteBtnAction(){
//如果selectArray.count，则选择数量大于0，有选cell
if selectArray.count > 0 {
var ids: [Int] = []
//拿到selectArray里面的model，取id，为ids数组
for model in selectArray{
ids.append(model.id!)
}
//把ids发送给服务器，删除服务器数据
api.message_del_app(id: ids){
[weak self] status,mess in
if status == 0{
myHUD.showSuccess(mess: mess)
self?.myTableView.isEditing = false
self?.selectArray = []
self?.getCooksData(isDeletALL: true,pageNumber: 1,pageSize: 20,completed: {})
}
else {
myHUD.showFailed(mess: mess)
}
}
//点击删除后，把编辑button设置为未选中，全选button设置不可见，设置 myTableView为不可编辑
rightBtn.isSelected = false
allBtn.isHidden = true
self.navigationItem.leftBarButtonItems = []
myTableView.setEditing(false, animated: true)
}
else {
self.view.makeToast("请选择要删除的消息")
}
}
@objc private func allBtnAction(){
//设置全选为选中，则title为取消
allBtn.isSelected = !allBtn.isSelected
rightBtn.isSelected = allBtn.isSelected
if allBtn.isSelected {
let count = self.messageData.count
var indexArray :[IndexPath] = []
//获取所有cell的IndexPath
if count > 0 {
for i in 0...count - 1{
let index = IndexPath(row: i, section: 0)
indexArray.append(index)
}
}
selectArray.removeAll()//移除现有选择数组的数据
selectArray = messageData//将数据源的所有数据赋值给选择数据
for index in indexArray{
选中所有的数组
myTableView.selectRow(at: index, animated: false, scrollPosition: UITableViewScrollPosition.none)
}
} else {
//取消操作，把selectArray为空
selectArray.removeAll()
myTableView.setEditing(false, animated: true)//设置为不可编辑
allBtn.isHidden = true//隐藏
self.navigationItem.leftBarButtonItems = []//移除删除按钮
}
}
// MARK: - Table view data source
func numberOfSections(in tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return messageData.count
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 60
}
func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
return true//返回可编辑
}
func tableView(_ tableView: UITableView, editingStyleForRowAt indexPath: IndexPath) -> UITableViewCellEditingStyle {
//这里非常关键！
return UITableViewCellEditingStyle(rawValue: UITableViewCellEditingStyle.delete.rawValue | UITableViewCellEditingStyle.insert.rawValue)!
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let reuesname = "cell"
var cell = tableView.dequeueReusableCell(withIdentifier: reuesname) as?MESsagneCell
if cell == nil {
cell = MESsagneCell(style: UITableViewCellStyle.default, reuseIdentifier: reuesname)
}
cell?.title.text = messageData[indexPath.row].title!
cell?.content.text = messageData[indexPath.row].content!
cell?.createTime.text = messageData[indexPath.row].createTime!
return cell!
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if tableView.isEditing {
let select = self.messageData[indexPath.row]
if (!self.selectArray.contains(select)) {
self.selectArray.append(select)
}
}
}
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
let select = self.messageData[indexPath.row]
if (self.selectArray.contains(select)) {
let index = selectArray.index(of: select)
selectArray.remove(at: index!)
}
}
}
谢谢，如果写的不好还希望指出，如果恰巧能满足你的需求，请点个喜欢
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