Swift UIViewController未取消初始化(mvvm和协调器)
因为这个问题,我头疼。为什么我的SplashscreenViewController没有取消初始化?你们在下面的代码中看到了任何潜在的保留周期吗? 我试图检查Malloc堆栈,但找不到任何有用的信息Swift UIViewController未取消初始化(mvvm和协调器),swift,mvvm,rx-swift,swinject,coordinator-pattern,Swift,Mvvm,Rx Swift,Swinject,Coordinator Pattern,因为这个问题,我头疼。为什么我的SplashscreenViewController没有取消初始化?你们在下面的代码中看到了任何潜在的保留周期吗? 我试图检查Malloc堆栈,但找不到任何有用的信息 final class SplashscreenViewController: UIViewController { var viewModel: SplashscreenViewModelType! private let animationStartScale: CGFloat
final class SplashscreenViewController: UIViewController {
var viewModel: SplashscreenViewModelType!
private let animationStartScale: CGFloat = 0.75
private let animationEndScale: CGFloat = 1.0
private let animationDuration: TimeInterval = 0.4
private let splashscreenDuration: TimeInterval = 1.5
@IBOutlet private weak var logoImageView: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
animateLogo(scale: animationStartScale)
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
DispatchQueue.main.asyncAfter(deadline: .now() + splashscreenDuration, execute: { [weak self] in
self?.viewModel.onFinish.onNext(())
})
}
private func animateLogo(scale: CGFloat) {
UIView.animate(withDuration: animationDuration, animations: {
self.transformImage(scale: scale)
}, completion: { _ in
if scale == self.animationStartScale {
self.animateLogo(scale: self.animationEndScale)
} else {
self.animateLogo(scale: self.animationStartScale)
}
})
}
private func transformImage(scale: CGFloat) {
logoImageView.transform = CGAffineTransform(scaleX: scale, y: scale)
}
}
保存SplaschreenViewController实例的类是它的协调器。代码如下:
final class SplashscreenCoordinator: BaseCoordinator {
private let window: UIWindow
init(window: UIWindow) {
self.window = window
}
override func start() -> Observable<Void> {
let vc: SplashscreenViewController = SwinjectStoryboard.instantiateInitialViewController()
window.rootViewController = vc
window.makeKeyAndVisible()
let onFinish = vc.viewModel.onFinish
.asObservable()
.flatMap { [unowned self] _ -> Observable<Void> in
guard self.window.rootViewController == vc else {
return Observable<Void>.empty()
}
if UserPreferencesManager.isLoggedIn() {
return self.startAppForLoggedInUser()
} else {
return self.startAppForAnonymousUser()
}
}
return onFinish
}
private func startAppForLoggedInUser() -> Observable<Void> {
let tabBar = TabBarCoordinator(window: window)
return coordinate(to: tabBar)
}
private func startAppForAnonymousUser() -> Observable<Void> {
let startCoordinator = StartCoordinator(window: window)
return coordinate(to: startCoordinator)
}
}
final类协调员:BaseCoordinator{
私人出租窗口:UIWindow
初始化(窗口:UIWindow){
self.window=window
}
覆盖func start()->可观察{
让vc:SplashscreenViewController=SwinjectStoryboard.InstanceInitialViewController()
window.rootViewController=vc
window.makeKeyAndVisible()的
设onfish=vc.viewModel.onfish
.asObservable()
.flatMap{[unowned self]\在中可观察到
guard self.window.rootViewController==vc else{
返回可观察的.empty()
}
if UserPreferencesManager.isLoggedIn(){
返回self.startAppForLoggedInUser()
}否则{
return self.startappforanymousser()
}
}
返回完成
}
private func startAppForLoggedInUser()->可观察{
让tabBar=tabBar协调器(窗口:窗口)
返回坐标(到:选项卡栏)
}
private func startappforanymousser()->可观察{
让startCoordinator=startCoordinator(窗口:窗口)
返回坐标(到:startCoordinator)
}
}
还有来自BaseCoordinator的一些代码:
...
private func store(coordinator: BaseCoordinator) {
childCoordinators[coordinator.identifier] = coordinator
}
private func free(coordinator: BaseCoordinator) {
childCoordinators[coordinator.identifier] = nil
}
func coordinate(to coordinator: BaseCoordinator) -> Observable<Void> {
store(coordinator: coordinator)
return coordinator.start()
.do(onNext: { [weak self] _ in
self?.free(coordinator: coordinator)
})
}
...
。。。
专用func商店(协调人:BaseCoordinator){
childCoordinators[coordinator.identifier]=协调员
}
private func free(协调器:BaseCoordinator){
childCoordinators[coordinator.identifier]=nil
}
func坐标(到协调器:BaseCoordinator)->可观察{
门店(协调员:协调员)
返回协调器.start()
.do(onNext:{[弱自我]uuIn
自我?.free(协调员:协调员)
})
}
...
提前感谢您的回答 我可以通过以下两种方式了解如何阻止
SplashscreenViewController
解除分配:
rootViewController
的窗口
未解除分配。请记住,应用程序保留“关键点”窗口start()
函数中,Observable
闭包保留了vc
变量。这个可观察的
可能会被明确地或在DisposeBag
中保留在其他地方