如何使用LiveData处理错误状态? [英] How to handle error states with LiveData?

问题描述

新的 LiveData 可以替代在某些情况下RxJava的可观察对象.但是，与Observable不同，LiveData没有回调错误.

The new LiveData can be used as a replacement for RxJava's observables in some scenarios. However, unlike Observable, LiveData has no callback for errors.

我的问题是:如何处理LiveData中的错误，例如当它被某些由于IOException而无法检索的网络资源支持时?

My question is: How should I handle errors in LiveData, e.g. when it's backed by some network resource that can fail to be retrieved due to an IOException?

推荐答案

在Google的

In one of Google's sample apps for Android Architecture Components they wrap the LiveData emitted object in a class that can contain a status, data, and message for the emitted object.

通过这种方法，您可以使用状态来确定是否存在错误.

With this approach you can use the status to determine if there was an error.

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