我试图在Swift中实现一个简单的独立服务来静音/取消静音系统音量。该部分工作正常,但当我从热键或服务菜单调用服务时,我收到错误
静音[36967:3258511]找不到选择器toggleMute的服务提供者:userData:error:或toggleMute :: for service toggleMute
main.swift:
import AppKit
import AudioToolbox
class Muter {
var muted: Bool {...}
//Service Method
func toggleMute(pboard: NSPasteboard, userData: String, error: NSErrorPointer) {
println("Service mute called")
muted = !muted
}
}
NSRegisterServicesProvider(Muter(), "Mute")
NSRunLoop.currentRunLoop().run()
的Info.plist:
<key>NSServices</key>
<array>
<dict>
<key>NSMenuItem</key>
<dict>
<key>default</key>
<string>Toggle Mute</string>
</dict>
<key>NSMessage</key>
<string>toggleMute</string>
<key>NSPortName</key>
<string>Mute</string>
</dict>
</array>
答案 0 :(得分:2)
您需要使用toggleMute
属性标记@objc
方法,否则不会向Objective-C运行时注册选择器,后者负责调度对您服务的调用。