以下命令适用于AFNetworking 1.x库
[self registerHTTPOperationClass:[AFJSONRequestOperation class]];
...
[self setDefaultHeader:@"Accept" value:@"application/json"];
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AFNetworking 2.0中这些功能的等价物是什么?
谢谢
UI按钮的alpha值变为零,点击时变为透明.我添加了这个IBAction
@IBAction func btnTapped(sender: UIButton) {
sender.highlighted = false
//...
}
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触摸时UIButton仍然变得透明.怎么预防?
如何制作具有角度的IBDesignable组件:旋转视图的CGFloat属性
import UIKit
@IBDesignable
class MyB: UIButton {
@IBInspectable
var angle: CGFloat = 0 {
didSet {
//What to put here?
}
}
override init(frame: CGRect) {
super.init(frame: frame)
// Initialization code
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
}
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我试过了
self.transform = CGAffineTransformMakeRotation(angle)
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但它不起作用
我通过故事板构建了选项卡栏,并自定义颜色,我在应用程序委托中更改它,使用UITabBar.appearance().barTintColor = Color,
我有一个梯度方法是这样的:
func setGradientBackground(colorOne: UIColor, colorTwo: UIColor) {
let gradientlayer = CAGradientLayer()
gradientlayer.frame = bounds
gradientlayer.colors = [colorOne.cgColor, colorTwo.cgColor]
gradientlayer.locations = [0, 1]
gradientlayer.startPoint = CGPoint(x: 1.0, y: 0.0)
gradientlayer.endPoint = CGPoint(x: 0.0, y: 0.0)
layer.insertSublayer(gradientlayer, at: 0)
}
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如何将其应用到标签栏的背景?
为什么这段代码不起作用?
protocol ExampleProtocol {
var simpleDescription: String { get }
mutating func adjust()
}
extension Int: ExampleProtocol {
var simpleDescription: String {
return "The number \(self)"
}
mutating func adjust() {
self += 42
}
}
var x:Int = 7
let y:Int = x.adjust()
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这是我在XCODE上得到的

有没有办法让adjust()返回Int而不改变协议中的定义?
我有以下内容 GameViewController.swift
class GameViewController: UIViewController {
override func viewWillLayoutSubviews() {
super.viewWillLayoutSubviews()
println(self.view.frame.size)
var skView:SKView = self.view as SKView
if skView.scene == nil {
skView.showsFPS = false
skView.showsNodeCount = false
// Create and configure the scene.
var scene : SKScene = GameScene(size: skView.bounds.size)
scene.scaleMode = SKSceneScaleMode.AspectFill
// Present the scene.
skView.presentScene(scene)
}
}
override func prefersStatusBarHidden() -> Bool {
return true
}
}
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它打印:
(320.0,480.0)
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如何使GameScene整个屏幕充满而不是在屏幕的顶部和底部留下黑带?
代码在 GameScene.swift
class GameScene: SKScene {
override func didMoveToView(view: SKView) {
/* Setup …Run Code Online (Sandbox Code Playgroud) 我按照这里给出的步骤来构建要在iOS项目中使用的领域,我正在使用Xcode 8 beta 3:
我收到这些警告:
ld: warning: ignoring file .../Realm.framework/Realm, missing required architecture x86_64 in file .../Realm.framework/Realm (2 slices)
ld: warning: ignoring file .../RealmSwift.framework/RealmSwift, missing required architecture x86_64 in file .../RealmSwift.framework/RealmSwift (2 slices)
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而这个错误
Lipo: -remove's specified would result in an empty fat file
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为什么会这样?
在Swift中是否存在比u_long或UInt64更大容量的类型?
我有一个函数,需要非常大的整数来识别28位数的信用卡号码:
func myFunc(number : /*What to put here?*/) {
//body
}
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什么类型合适?应该将数字视为字符串吗?
通配符模式匹配:如果给定字符串和含有通配符,即一个图案*和?,其中?可以匹配到任何单个字符在输入字符串并*可以匹配到任何数量的字符,包括零个字符的,设计一个有效的算法来发现如果与图案匹配完整的输入字符串与否。
例如:
输入:字符串=“xyxzzxy”,模式=“x***y”
输出:匹配
输入:字符串=“xyxzzxy”,模式=“x***x”
输出:不匹配
输入:字符串=“xyxzzxy”,模式=“x***x?”
输出:匹配
输入:字符串=“xyxzzxy”,模式=“*”
输出:匹配
我把Apache Server使用的.cer证书放在Xcode项目中.当应用程序尝试与服务器通信时,我在Xcode中收到此错误:
Assertion failure in id AFPublicKeyForCertificate(NSData *__strong)(),
/Users/../ProjectName/AFNetworking/AFSecurityPolicy.m:52
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException',
reason: 'Invalid parameter not satisfying: allowedCertificate'
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以下是调用服务器的代码:
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer = [AFJSONResponseSerializer serializer];
[self setSecurityPolicy:[AFSecurityPolicy policyWithPinningMode:AFSSLPinningModePublicKey]];
[manager POST:@"https://www.example.com/" parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {
//success
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
//failure
}];
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我没有运气将固定模式更改为AFSSLPinningModeCertificate.
当我删除这一行:
[self setSecurityPolicy:[AFSecurityPolicy policyWithPinningMode:AFSSLPinningModePublicKey]];
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服务器响应错误消息:
"The operation couldn't be completed. (NSURLErrorDomain error -1012.)"
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证书是使用OpenSSL创建的,我甚至尝试过StartSSL.com的免费证书
至于Apache Server端,这里是虚拟主机配置:
# My custom host
<VirtualHost *:443>
ServerName www.example.com
DocumentRoot "/path/to/folder" …Run Code Online (Sandbox Code Playgroud) swift ×8
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