1,下面的樣例是給表格UITableView添加編輯功能:swift
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import
UIKit
class
ViewController
:
UIViewController
,
UITableViewDelegate
,
UITableViewDataSource
,
UIGestureRecognizerDelegate
{
var
tableView:
UITableView
?
var
allnames:
Dictionary
<
Int
, [
String
]>?
var
adHeaders:[
String
]?
override
func
loadView() {
super
.loadView()
}
override
func
viewDidLoad() {
super
.viewDidLoad()
//初始化數據,這一次數據,咱們放在屬性列表文件裏
self
.allnames = [
0:[
String
]([
"UILabel 標籤"
,
"UIButton 按鈕"
]),
1:[
String
]([
"UIDatePiker 日期選擇器"
,
"UITableView 表格視圖"
])
];
println
(
self
.allnames)
self
.adHeaders = [
"常見 UIKit 控件"
,
"高級 UIKit 控件"
]
//建立表視圖
self
.tableView =
UITableView
(frame:
self
.view.frame, style:
UITableViewStyle
.
Grouped
)
self
.tableView!.delegate =
self
self
.tableView!.dataSource =
self
//建立一個重用的單元格
self
.tableView!.registerClass(
UITableViewCell
.
self
, forCellReuseIdentifier:
"SwiftCell"
)
self
.view.addSubview(
self
.tableView!)
//建立表頭標籤
var
headerLabel =
UILabel
(frame:
CGRectMake
(0, 0,
self
.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)
self
.tableView!.tableHeaderView = headerLabel
//綁定對長按的響應
var
longPress =
UILongPressGestureRecognizer
(target:
self
,
action:
Selector
(
"tableviewCellLongPressed:"
))
//代理
longPress.delegate =
self
longPress.minimumPressDuration = 1.0
//將長按手勢添加到須要實現長按操做的視圖裏
self
.tableView!.addGestureRecognizer(longPress)
}
func
tableviewCellLongPressed(gestureRecognizer:
UILongPressGestureRecognizer
)
{
if
(gestureRecognizer.state ==
UIGestureRecognizerState
.
Began
)
{
println
(
"UIGestureRecognizerStateBegan"
);
}
if
(gestureRecognizer.state ==
UIGestureRecognizerState
.
Changed
)
{
println
(
"UIGestureRecognizerStateChanged"
);
}
if
(gestureRecognizer.state ==
UIGestureRecognizerState
.
Ended
)
{
println
(
"UIGestureRecognizerStateEnded"
);
//在正常狀態和編輯狀態之間切換
if
(
self
.tableView!.editing ==
false
)
{
self
.tableView!.setEditing(
true
, animated:
true
)
}
else
{
self
.tableView!.setEditing(
false
, animated:
true
)
}
}
}
//在本例中,有2個分區
func
numberOfSectionsInTableView(tableView:
UITableView
!) ->
Int
{
return
2
}
//返回表格行數(也就是返回控件數)
func
tableView(tableView:
UITableView
, numberOfRowsInSection section:
Int
) ->
Int
{
var
data =
self
.allnames?[section]
return
data!.count
}
// UITableViewDataSource協議中的方法,該方法的返回值決定指定分區的頭部
func
tableView(tableView:
UITableView
, titleForHeaderInSection
section:
Int
)->
String
{
var
headers =
self
.adHeaders!;
return
headers[section];
}
// UITableViewDataSource協議中的方法,該方法的返回值決定指定分區的尾部
func
tableView(tableView:
UITableView
, titleForFooterInSection
section:
Int
)->
String
{
var
data =
self
.allnames?[section]
return
"有\(data!.count)個控件"
}
//建立各單元顯示內容(建立參數indexPath指定的單元)
func
tableView(tableView:
UITableView
, cellForRowAtIndexPath indexPath:
NSIndexPath
)
->
UITableViewCell
{
//爲了提供表格顯示性能,已建立完成的單元需重複使用
let
identify:
String
=
"SwiftCell"
//同一形式的單元格重複使用,在聲明時已註冊
let
cell = tableView.dequeueReusableCellWithIdentifier(identify, forIndexPath: indexPath)
as
UITableViewCell
cell.accessoryType =
UITableViewCellAccessoryType
.
DisclosureIndicator
var
secno = indexPath.section
var
data =
self
.allnames?[secno]
cell.textLabel?.text = data![indexPath.row]
return
cell
}
// UITableViewDelegate 方法,處理列表項的選中事件
func
tableView(tableView:
UITableView
!, didSelectRowAtIndexPath indexPath:
NSIndexPath
!)
{
self
.tableView!.deselectRowAtIndexPath(indexPath, animated:
true
)
var
itemString =
self
.allnames![indexPath.section]![indexPath.row]
var
alertview =
UIAlertView
();
alertview.title =
"提示!"
alertview.message =
"你選中了【\(itemString)】"
;
alertview.addButtonWithTitle(
"肯定"
)
alertview.show();
}
func
tableView(tableView:
UITableView
!, editingStyleForRowAtIndexPath indexPath:
NSIndexPath
!)
->
UITableViewCellEditingStyle
{
if
(indexPath.section == 1)
{
return
UITableViewCellEditingStyle
.
Insert
}
return
UITableViewCellEditingStyle
.
Delete
}
func
tableView(tableView:
UITableView
!,
titleForDeleteConfirmationButtonForRowAtIndexPath indexPath:
NSIndexPath
!) ->
String
!
{
var
data =
self
.allnames?[indexPath.section]!
var
itemString = data![indexPath.row]
as
String
return
"肯定刪除\(itemString)?"
}
func
tableView(tableView:
UITableView
!, commitEditingStyle editingStyle:
UITableViewCellEditingStyle
,
forRowAtIndexPath indexPath:
NSIndexPath
!)
{
if
(editingStyle ==
UITableViewCellEditingStyle
.
Delete
)
{
self
.allnames?[indexPath.section]?.removeAtIndex(indexPath.row)
self
.tableView!.reloadData()
self
.tableView!.setEditing(
true
, animated:
true
)
println
(
"你確認了刪除按鈕"
)
// Array
}
else
if
(editingStyle ==
UITableViewCellEditingStyle
.
Insert
)
{
self
.allnames?[indexPath.section]?.insert(
"插入一項新的"
, atIndex: indexPath.row+1)
println
(
"你按下了插入按鈕"
)
self
.tableView!.reloadData()
}
}
override
func
didReceiveMemoryWarning() {
super
.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
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