Swift - 给表格添加编辑功能删除，插入

Swift 2020-05-27
1，下面的样例是给表格UITableView添加编辑功能：
（1）给表格添加长按功能，长按后表格进入编辑状态
（2）在编辑状态下，第一个分组处于删除状态，第二个分组处于插入状态
（3）点击删除图标，删除对应条目
（4）点击添加图标，插入一条新数据

2，效果图
3，代码如下
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import UIKit
class ViewController : UIViewController , UITableViewDelegate ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,
UITableViewDataSource UIGestureRecognizerDelegate {
var tableView: UITableView ?
allnames: Dictionary < Int ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,[ String ]>?
adHeaders:[ ]?
override func loadView() {
super .loadView()
}
viewDidLoad() {
.viewDidLoad()
//初始化数据，这一次数据，我们放在属性列表文件里
self .allnames = [
0:[ ]([
"UILabel 标签" ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,
"UIButton 按钮" ]),
1:[ String ]([
"UIDatePiker 日期选择器" ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,
"UITableView 表格视图" ])
];
print ( .allnames)
.adHeaders = [
"常见 UIKit 控件" ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,
"高级 UIKit 控件"
]
//创建表视图
.tableView = (frame: .view.frame,style: UITableViewStyle . Grouped )
.tableView!.delegate = self
.tableView!.dataSource = self
//创建一个重用的单元格
.tableView!.registerClass( UITableViewCell . ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,forCellReuseIdentifier: "SwiftCell" )
.view.addSubview( .tableView!)
//创建表头标签
let headerLabel = UILabel (frame: CGRectMake (0, .view.bounds.size.width,30))
headerLabel.backgroundColor = UIColor .blackColor()
headerLabel.textColor = UIColor .whiteColor()
headerLabel.numberOfLines = 0
headerLabel.lineBreakMode = NSLineBreakMode ByWordWrapping
headerLabel.text = "UIKit 控件"
headerLabel.font = UIFont .italicSystemFontOfSize(20)
.tableView!.tableHeaderView = headerLabel
//绑定对长按的响应
longPress = UILongPressGestureRecognizer (target: ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,
action: Selector ( "tableviewCellLongpressed:" ))
//代理
longPress.delegate = self
longPress.minimumPressDuration = 1.0
//将长按手势添加到需要实现长按操作的视图里
.tableView!.addGestureRecognizer(longPress)
}
tableviewCellLongpressed(gestureRecognizer: )
{
if (gestureRecognizer.state == UIGestureRecognizerState Began )
{
"UIGestureRecognizerStateBegan" );
}
Changed )
{
"UIGestureRecognizerStateChanged" );
}
(gestureRecognizer.state == UIGestureRecognizerState Ended )
{
"UIGestureRecognizerStateEnded" );
//在正常状态和编辑状态之间切换
.tableView!.editing == false )
{
.tableView!.setEditing( true ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,animated: )
}
else
{
)
}
}
}
//在本例中，有2个分区
numberOfSectionsInTableView(tableView: UITableView ) -> {
return 2
}
//返回表格行数（也就是返回控件数）
tableView(tableView: ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,numberOfRowsInSection section: {
data = .allnames?[section]
data!.count
}
// UITableViewDataSource协议中的方法，该方法的返回值决定指定分区的头部
tableView(tableView: ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,titleForHeaderInSection
section: )-> ?
{
headers = .adHeaders!;
headers[section];
}
// UITableViewDataSource协议中的方法，该方法的返回值决定指定分区的尾部
ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:0px 1em!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; min-height:inherit!important; background:none rgb(249,titleForFooterInSection
?
{
.allnames?[section]
return "有\(data!.count)个控件"
}
//创建各单元显示内容(创建参数indexPath指定的单元）
ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:0px 1em!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; min-height:inherit!important; background:none rgb(249,cellForRowAtIndexPath indexPath: NSIndexPath )
-> UITableViewCell
{
//为了提供表格显示性能，已创建完成的单元需重复使用
identify: = "SwiftCell"
//同一形式的单元格重复使用，在声明时已注册
cell = tableView.dequeueReusableCellWithIdentifier(identify,forIndexPath: indexPath)
as UITableViewCell
cell.accessoryType = UITableViewCellAccessoryType disclosureIndicator
secno = indexPath.section
.allnames?[secno]
cell.textLabel?.text = data![indexPath.row]
cell
}
// UITableViewDelegate 方法，处理列表项的选中事件
ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:0px 1em!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; min-height:inherit!important; background:none rgb(249,didSelectRowAtIndexPath indexPath: )
{
.tableView!.deselectRowAtIndexPath(indexPath,monospace!important; min-height:inherit!important; background:none!important">)
itemString = .allnames![indexPath.section]![indexPath.row]
alertview = UIAlertView ();
alertview.title = "提示!"
alertview.message = "你选中了【\(itemString)】" ;
alertview.addButtonWithTitle( "确定" )
alertview.show();
}
ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:0px 1em!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; min-height:inherit!important; background:none rgb(249,editingStyleForRowAtIndexPath indexPath: NSIndexPath )
-> UITableViewCellEditingStyle
{
(indexPath.section == 1)
{
return UITableViewCellEditingStyle Insert
}
return UITableViewCellEditingStyle Delete
}
ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:0px 1em!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; min-height:inherit!important; background:none rgb(249,
titleForDeleteConfirmationButtonForRowAtIndexPath indexPath: ) -> ?
{
.allnames?[indexPath.section]!
itemString = data![indexPath.row] as String
"确定删除\(itemString)？"
}
ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:0px 1em!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; min-height:inherit!important; background:none rgb(249,commitEditingStyle editingStyle: ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,
forRowAtIndexPath indexPath: )
{
(editingStyle == Delete )
{
.allnames?[indexPath.section]?.removeAtIndex(indexPath.row)
.tableView!.reloadData()
)
"你确认了删除按钮" )
// Array
}
else (editingStyle == Insert )
{
.allnames?[indexPath.section]?.insert( "插入一项新的" ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,atIndex: indexPath.row+1)
"你按下了插入按钮" )
.tableView!.reloadData()
}
}
didReceiveMemoryWarning() {
.didReceiveMemoryWarning()
}
}

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