如何取消Firebase setValue（待离线时） [英] How to cancel Firebase setValue while pending for completion (when offline)

问题描述

如果我想停止监听实时更改，则可以调用ref.removeAllObservers（）来读取数据（如observeEventType）。但是，我找不到一个方法来中断和取消setValue（写入数据）。有一些用例，我需要取消数据的写入，而等待一段时间的互联网连接重新上线。这是可能的和如何？如果有一个写入队列，可以通过调用 FIRDatabase.purgeOutstandingWrites（）来清空它。

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I can call ref.removeAllObservers() for reading data (such as observeEventType) if I want to stop listening for real time changes. However, i cannot find a way to interrupt and cancel the setValue (writing data). There are some use case which I need to cancel the writing of data while waiting for some time for internet connection to get back online. Is it possible and how?

解决方案

If there is a write queue, you can empty it by calling FIRDatabase.purgeOutstandingWrites().

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