1，Swift
方式一,
import Foundation
private class Block<T> {
let f : T
init (_ f: T) { self.f = f }
}
extension Timer {
static func static_scheduledTimer(timeInterval ti: TimeInterval, repeats: Bool, block: @escaping ()->()) -> Timer {
return self.scheduledTimer(timeInterval: ti, target: self, selector: #selector(static_blcokInvoke(timer: )), userInfo:Block<()->()>(block), repeats: repeats)
}
@objc static func static_blcokInvoke(timer: Timer) {
if let block = timer.userInfo as? Block<()->()> {
block.f()
}
}
}
方式二
class WeakProxy: NSObject {
weak var target: NSObjectProtocol?
init(target: NSObjectProtocol) {
self.target = target
super.init()
}
override func responds(to aSelector: Selector!) -> Bool {
return (target?.responds(to: aSelector) ?? false) || super.responds(to: aSelector)
}
override func forwardingTarget(for aSelector: Selector!) -> Any? {
return target
}
}
暂时记下，明日补下方法分析以及oc版本
