如果显示了从视图控制器启动的审阅弹出窗口,则由于缺少SKStoreReviewController.requestReview()
的回调函数而无法使用该弹出窗口时,无法将窗口焦点切换回视图控制器。 / p>
在关闭评论弹出窗口时,我想打电话给becomeFirstResponder()
。有想法吗?
是否可以扩展 SKStoreReviewController 并以某种方式添加回调?
答案 0 :(得分:0)
警告这可能会在某些时候中断。
步骤1:将此代码添加到didFinishLaunchingWithOptions
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
let windowClass: AnyClass = UIWindow.self
let originalSelector: Selector = #selector(setter: UIWindow.windowLevel)
let swizzledSelector: Selector = #selector(UIWindow.setWindowLevel_startMonitor(_:))
let originalMethod = class_getInstanceMethod(windowClass, originalSelector)
let swizzledMethod = class_getInstanceMethod(windowClass, swizzledSelector)
let didAddMethod = class_addMethod(windowClass, originalSelector, method_getImplementation(swizzledMethod!), method_getTypeEncoding(swizzledMethod!))
if didAddMethod {
class_replaceMethod(windowClass, swizzledSelector, method_getImplementation(originalMethod!), method_getTypeEncoding(originalMethod!))
} else {
method_exchangeImplementations(originalMethod!, swizzledMethod!)
}
return true
}
第2步:添加此类
class MonitorObject: NSObject {
weak var owner: UIWindow?
init(_ owner: UIWindow?) {
super.init()
self.owner = owner
NotificationCenter.default.post(name: UIWindow.didBecomeVisibleNotification, object: self)
}
deinit {
NotificationCenter.default.post(name: UIWindow.didBecomeHiddenNotification, object: self)
}
}
第3步:添加此UIWindow扩展
private var monitorObjectKey = "monitorKey"
private var partialDescForStoreReviewWindow = "SKStore"
extension UIWindow {
// MARK: - Method Swizzling
@objc func setWindowLevel_startMonitor(_ level: Int) {
setWindowLevel_startMonitor(level)
if description.contains(partialDescForStoreReviewWindow) {
let monObj = MonitorObject(self)
objc_setAssociatedObject(self, &monitorObjectKey, monObj, objc_AssociationPolicy.OBJC_ASSOCIATION_RETAIN_NONATOMIC)
}
}
}
第4步:将此添加到您控制器的ViewDidLoad中
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
NotificationCenter.default.addObserver(self, selector: #selector(windowDidBecomeHiddenNotification(_:)), name: UIWindow.didBecomeHiddenNotification, object: nil)
}
第5步:添加通知的回调并检查关联对象是否匹配
@objc func windowDidBecomeHiddenNotification(_ notification: Notification?) {
if notification?.object is MonitorObject {
print("hello")
}
}
现在,当关闭查看对话框时,将触发通知,并会调用'print(“ hello”)。
答案 1 :(得分:0)
有时,iOS应用程序失去了响应者链,就像上面显示StoreKit提示的示例一样。我们可以做的是检测UIApplication.sendAction
中的此类事件,然后通过becomeFirstResponder
重新激活第一响应者链。 UIKit将重新建立第一个响应者链,我们可以重新发送同一事件。
class MyApplication: UIApplication {
func reactivateResponderChainWhenFirstResponderEventWasNotHandled() {
becomeFirstResponder()
}
override func sendAction(_ action: Selector, to target: Any?, from sender: Any?, for event: UIEvent?) -> Bool {
let wasHandled = super.sendAction(action, to: target, from: sender, for: event)
if wasHandled == false, target == nil {
reactivateResponderChainWhenFirstResponderEventWasNotHandled()
return super.sendAction(action, to: target, from: sender, for: event)
}
return wasHandled
}
}
这对我在iOS 13上有效,不需要任何私有API访问。