lazy var imageview:uiimageview = ()
lazy var button:uibutton = ()
@objc func buttonclick(_ button:uibutton) -> ()
protocol imageviewdelegate: class
@objc protocol imagecelldelegate: nsobjectprotocol
weak
vardelegate:imagecelldelegate?
注意:
**繼承的父類 class和nsobjectprotocol 的區別
**繼承的父類nsobjectprotocol的時候,判斷**是否實現某個方法responds(to: #selector()能提示處理,繼承自class則沒法判斷imagecelldelegate.實現的方法去判斷!!!
@objc func buttonclick(_ button:uibutton) -> ()
ifdelegate.responds(to: #selector(imagecelldelegate.imagecellbuttonclick(imagecell:content:)))
}
//判斷某個類
func scrollviewdidscroll(_ scrollview: uiscrollview)
}//判斷某個類及其子類
func scrollviewdidscroll(_ scrollview: uiscrollview)
}
//重新整理所有
self.tableview
.reloaddata()
//重新整理分組
self.tableview
.reloadsections([1], with: .none)
//重新整理某乙個cell或者幾個cell
self.tableview
.reloadrows(at: [indexpath], with: .none)
class func gettopiccontentimageurllink(_ range: nsrange, _ pattern: string = "let regularresults = regularexpression.matches(in: content, options: , range: nsmakerange(0, content.count))
for textcheckingresult in regularresults }}
return imageurlarr
}
let content = (newstring as nsstring).addingpercentescapes(using: string.encoding.utf8.rawvalue)!
//執行緒通訊
dispatchqueue.global().async
}//延遲操作 dispatchtime 的精度是納秒
dispatchqueue.main
.asyncafter(deadline: dispatchtime.now() + 10)
dispatchqueue.global().asyncafter(deadline: dispatchtime.now() + 10)
//dispatchwalltime 的精度是微秒
dispatchqueue.global().asyncafter(walldeadline: dispatchwalltime.now() + 2.0)
let arr = [1,2,3,4,5]
//是個切片陣列和陣列之間可以轉化
let arrslice = arr[0..<3]
let subarr = array(arrslice)
//通知名稱
let zqpcouponcellselectedcoupon: notification.name = notification.name(rawvalue: "zqpcouponcellselectedcoupon")
//發通知
notificationcenter.default.post(name: zqpcouponcellselectedcoupon, object: couponmodel)
//接通知
notificationcenter.default.addobserver(self, selector: #selector(selectedcoupon(_ :)), name: zqpcouponcellselectedcoupon, object: nil)
//響應事件
@objc func selectedcoupon(_ notication: notification)
//當前時間---毫秒級 時間戳 - 13位
let timeinterval: timeinterval =
date().timeintervalsince1970
let currentmillisecond = clonglong(round(timeinterval*
1000))
print(currentmillisecond)
`1532068608613`
//當前時間---秒級 時間戳 - 10位
let timeinterval: timeinterval =
date().timeintervalsince1970
let currentsecond = int(timeinterval)
print(currentsecond)
`1532068723`
屬性前+@objc,否則字典轉模型不成功
class personmodel: nsobject
static
let sharedinstance = zymanagercontroller()
//oc
#import
//swift
import uikit.uigesturerecognizersubclass
//注意,確保string有值,否則每一步轉換,都要guard防衛
let childrencontrollerstring: string = item[rootvcname] as! string
let namespace = bundle.main.infodictionary!["cfbundleexecutable"] as! string
let childrencontrollerclass = nsclassfromstring(namespace + "." + childrencontrollerstring)
let childrencontrollertype = childrencontrollerclass as! uiviewcontroller.type
let childrencontroller = childrencontrollertype.init()
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