在 RxJava 中取消 Observable [英] Cancelling an Observable in RxJava

问题描述

我有一个正在执行下载的 observable.但是，当我点击一个按钮时，我想取消那个 observable.

I have an observable that is performing a download. However I want to cancel that observable when I click on a button.

这怎么可能?

谢谢.

推荐答案

你不能真正告诉 observable 取消网络请求，因为 RxJava 不知道在 Observable 内部运行的代码.您可以做的是使用 doOnUnsubscribe 来检查网络请求是否仍在运行，如果取消，则在您想取消时取消订阅.

You can't really tell an observable to cancel a network request as RxJava has no knowledge of the code thats running inside of the Observable. What you can do is use the doOnUnsubscribe to check whether the network request is still running and if it is cancel it, then just unsubscribe when you want to cancel.

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