我有一个带有UICollectionView的ViewController,其元素已绑定,并且通过以下方式创建了单元:

 self.viewModel.profileItems.bind(to: self.collectionView.rx.items){ (cv, row, item) ...
我还通过以下方式对用户点击做出反应:
self.collectionView.rx.modelSelected(ProfileItem.self).subscribe(onNext: { (item) in
        if(/*special item*/) {
            let xVC = self.storyboard?.instantiateViewController(identifier: "x") as! XViewController
            xVC.item = item
            self.navigationController?.pushViewController(xVC, animated: true)
        } else {
            // other generic view controller
        }
    }).disposed(by: bag)
xViewController中item的属性为ProfileItem?类型。如何将XViewController中对item的更改绑定到collectionView单元?
提前致谢

最佳答案

您的XViewController需要一个Observable,该Observable会在适当的时间发出新的项目...然后意识到,该Observable会影响profileItems或至少是您的视图模型发出的内容。

let xResult = self.collectionView.rx.modelSelected(ProfileItem.self)
    .filter { /*special item*/ }
    .flatMapFirst { [unowned self] (specialItem) -> Observable<Item> in
        let xVC = self.storyboard?.instantiateViewController(identifier: "x") as! XViewController
        xVC.item = item
        self.navigationController?.pushViewController(xVC, animated: true)
        return xVC.observableX // this needs to complete at the appropriate time.
    }

self.collectionView.rx.modelSelected(ProfileItem.self)
    .filter { /*not special item*/ }
    .bind(onNext: { [unowned self] item in
        // other generic view controller
    }
    .disposed(by: bag)
现在,您需要将xResult输入到您的视图模型中。

关于ios - 在RxSwift中观察其他ViewController中的对象更改,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/63928714/

10-11 04:35