我在 typhoon 中使用 swift,不知何故我的组件没有通过属性注入(inject)注入(inject)。对于像 Strings
这样的简单类型,它是有效的。我提供了一个简单的例子来解释这个问题。 输出 显示结果,其中 serviceB
具有对 serviceA
的空引用。所有 String
属性都已正确设置,并且不会引发任何错误。我在这里做错了什么?
XCode:6-beta5,台风:2.1.0
MYServiceA.swift
@objc(MYServiceA) public class MYServiceA : NSObject {
public var text : String!
}
MYServiceB.swift
@objc(MYServiceB) public class MYServiceB : NSObject {
public var text : String!
public var serivceA : MYServiceA!
}
MYAssembly.swift
public class MYAssembly : TyphoonAssembly {
public func serviceA() -> AnyObject {
var definitionBlock : TyphoonDefinitionBlock = {(definition : TyphoonDefinition!) in
definition.injectProperty("text", with: "some a text")
definition.scope = TyphoonScopeSingleton
}
return TyphoonDefinition.withClass(NSClassFromString("MYServiceA"), configuration: definitionBlock)
}
public func serviceB() -> AnyObject {
var definitionBlock : TyphoonDefinitionBlock = {(definition : TyphoonDefinition!) in
definition.injectProperty("text", with: "some b text")
definition.injectProperty("serivceA", with: self.serviceA())
definition.scope = TyphoonScopeSingleton
}
return TyphoonDefinition.withClass(NSClassFromString("MYServiceB"), configuration: definitionBlock)
}
}
AppDelegate.swift
import UIKit
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
var window: UIWindow?
func application(application: UIApplication!, didFinishLaunchingWithOptions launchOptions: NSDictionary!) -> Bool {
var assembly : MYAssembly = MYAssembly()
var factory : TyphoonComponentFactory = TyphoonBlockComponentFactory(assembly: assembly) as TyphoonComponentFactory
factory.makeDefault()
var serviceA : MYServiceA = TyphoonComponentFactory.defaultFactory().componentForKey("serviceA") as MYServiceA
println("MYServiceA")
println("- instance=\(serviceA != nil)")
println("- text=\(serviceA.text)")
var serviceB : MYServiceB = TyphoonComponentFactory.defaultFactory().componentForKey("serviceB") as MYServiceB
println("MYServiceB")
println("- instance=\(serviceB != nil)")
println("- text=\(serviceB.text)")
println("- serviceA.instance=\(serviceB.serivceA != nil)")
return true
}
..
}
输出
MYServiceA
- instance=true
- text=some a text
MYServiceB
- instance=true
- text=some b text
- serviceA.instance=false
最佳答案
Typhoon 程序集充分利用了 ObjC 运行时的动态调度功能。程序集被反射,每个方法被拦截(应用 AOP“周围”建议),这样 Typhoon 就有了一个蓝图来构建应用程序程序集中的每个组件。然而,Swift 会尽可能地尝试使用静态/vtable 调度(这可以防止所需的方法拦截)。
要指示 Swift 需要动态分派(dispatch),请将您的程序集方法标记为“动态”。
示例:(需要 Xcode6 beta 6)
public class MYAssembly : TyphoonAssembly {
public dynamic func serviceA() -> AnyObject {
var definitionBlock : TyphoonDefinitionBlock = {
(definition : TyphoonDefinition!) in
definition.injectProperty("text", with: "some a text")
definition.scope = TyphoonScopeSingleton
}
return TyphoonDefinition.withClass(MYServiceA.classForCoder(),
configuration: definitionBlock)
}
public dynamic func serviceB() -> AnyObject {
var definitionBlock : TyphoonDefinitionBlock = {
(definition : TyphoonDefinition!) in
definition.injectProperty("text", with: "some b text")
definition.injectProperty("serivceA", with: self.serviceA())
definition.scope = TyphoonScopeSingleton
}
return TyphoonDefinition.withClass(MYServiceB.classForCoder(),
configuration: definitionBlock)
}
}
关于ios - Swift Typhoon 组件属性注入(inject)不起作用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/25425080/