RxSwift：调用中的额外参数’onError’

发布时间：2020-12-14 02:26:37 所属栏目：百科来源：网络整理

导读：我在 Swift 4中使用Rx Swift跟随代码 worthReacting.flatMap{ (userSearch) in translator.getTranslation(ofWord: userSearch) }.subscribe( onSuccess: {(dataModel) in state.value = .translation(word: dataModel.definition,translations: dataModel.t

我在 Swift 4中使用Rx Swift跟随代码

worthReacting.flatMap{ (userSearch) in
        translator.getTranslation(ofWord: userSearch)
        }.subscribe(
            onSuccess: {(dataModel) in
                state.value = .translation(word: dataModel.definition,translations: dataModel.translations)
        },onError: {(error) in
                state.value = .networkError
        },onCompleted: {
                state.value = .unknownWord
        }).disposed(by: disposeBag)

worthReacting的类型为Observable< String>
translator.getTranslation返回Maybe< DataModel>

我遇到了构建错误

Extra argument ‘onError’ in call

也许平坦化为Observable会产生Observable. Observable不能发出onSuccess事件,而是发出onNext.以下代码将起作用：

worthReacting.flatMap{ (userSearch) in
        translator.getTranslation(ofWord: userSearch)
        }.subscribe(
            onNext: {(dataModel) in
                self.state.value = .translation(word: dataModel.definition,onError: {(error) in
                self.state.value = .networkError
        },onCompleted: {
                self.state.value = .unknownWord
        }).disposed(by: disposeBag)

（编辑：李大同）

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