Swift

Let Alert:uialertcontroller = Uialertcontroller (title: ' Message ', message: ' Thank you clicking ', Preferredstyle: Uialertcontrollerstyle.alert) alert.addaction (uialertaction title: "Close Alertview", Style:

turn from: http://www.starming.com/index.php?v=index&view=53 First build a Uibarextension.swift file to extend the Uinavigationbar Import Foundation Import Uikit extension Uinavigationbar {func hidebottomhairline () {Let Navigationbarimag Eview =

To invoke a custom OC or open source package in Swift, just do the next bridge, create a file with the project name-bridging-header.h file,. h files can import the files you want, like the OC, and then build In the settings objective-c bridging

Execute swift-ring-builder Add command adds device to ring, similar to the Create command, the Add command is done by the Swift.cli.ringbuilder.Commands class Add () function # swift/cli/ringbuilder.py def add (): #_parse_add_values () parse the

First, the circular statement 1. For loop 1) for-in cycle, for each element in the data range, sequence, set, etc., is executed once For a In 0...5{}//loop iteration, from A=0 to A=5, execute {} code Note: A loop exists, that is, {}a does not

The swift language uses VAR to define variables, but unlike other languages, Swift does not automatically assign an initial value to a variable, which means that the variable does not have a default value, so it must be initialized before it is

The string interception in Swift is not as convenient as using NSString, because the method substring (from: ) required by string is not of type int, This is inconvenient at the time of use, here I wrote a extension to string, the usage is very

var Alert:uialertview = uialertview.init (title: "Public Security entry and exit online platform", Message: "At present you can use the web version of the Immigration business reservation and inquiry, whether to enter the public security entry and

The way you write it, you can only use it as a summary of your own Swift learning. Import UIKit Typealias block = (string,string) () Class Movecarviewcontroller:uiviewcontroller,mamapviewdelegate,amaplocationmanagerdelegate,amapsearchdelegate,

This article is translated by yake_099 (blog) from Raywenderlich, author: Joshua Greene Original: How to Create CocoaPods with Swift You may be familiar with some of the more famous open-source cocoapods frameworks, such as Alamofire, Mbprogresshud.

Viewcontroller.swift//button//import UIKit class Viewcontroller:uiviewcontroller {override Func Viewdidloa D () {super.viewdidload ()//❗️swift advocates://Replace ' Selector ("Buttontap") ' With ' #selector (VIEWC ONTROLLER.BUTTONTAP) '//button

Extension homeviewcontroller{private func Setupnavigationbar () {/*** set navigation bar background color ***/ Navigationcontroller?. Navigationbar.bartintcolor = uicolor.red/*** Set nav bar title ***///Self.title = "NetEase News

The following are personal summary of the convenience of understanding, does not represent the official First, the definition Nil in Objective-c: Indicates the absence of a valid object, a pointer to a nonexistent object, no effect on the struct,

Need to use the timer in the project Here I Baidu a bit Usage is about the same as OC The test succeeds, and there's not much change in the code below. Timer private Var timer:timer! Enable timers to control the Getnetdata method once every n

One. Add a debug tag to Swift Two. Custom log // appdelegate.swift // 11-Custom Log//// Created by xiaomage on 16/4/1. copyright©2016 Year small size elder brother. All rights reserved. import UIKit @UIApplicationMain class

1 when defining a model property, if it is an object, it is usually optional (create it when needed, avoid writing the constructor, simplify the code)2 If it is a basic data type, cannot be set to optional, and to set the initial value, otherwise

1 Import UIKit2 3 classVc1:uiviewcontroller {4 5Fileprivate LazyvarPickerv:uipickerview = {6Let V = Uipickerview (Frame:cgrect (x: -Y: -, Width: $, Height: -))7V.Delegate= Self8V.datasource = Self9V.backgroundcolor =. OrangeTen One

Encapsulated Class CodeImport UIKit///class for control timersclassZdtimertool:nsobject {///Timer//private var timer:timer? ///GCD Timer Private varGcdtimer:dispatchsourcetimer?///GCD The suspend state of the timer Private varIssuspend:bool

1.Swift limit TextField The number of input bits is 10 bits:string: String), Bool { else{ returntrue } string. Count- range.length returnten }2.iOS float with double range and precision:https://www.jianshu.

1. Determine if the current controller is displayed:// determines whether the current controller is displayed Func iscurrentviewcontrollervisible (), Bool { return (self.isviewloaded) && (( Self.view.window = nil) }2. Solve the white