问题描述
Google最近宣布了新的 WorkManager 体系结构组件.通过在 Worker 类中实现 doWork() 可以轻松地安排同步工作，但是如果我想在后台进行一些异步工作怎么办?例如，我想使用翻新进行网络服务呼叫.我知道我可以发出一个同步网络请求，但是它将阻塞线程，并且感觉不对.对此有什么解决方案还是暂时不支持?
Google recently announced new WorkManager architecture component. It makes it easy to schedule synchronous work by implementing doWork() in Worker class, but what if I want to do some asynchronous work in the background? For example, I want to make a network service call using Retrofit. I know I can make a synchronous network request, but it would block the thread and just feels wrong.Is there any solution for this or it is just not supported at the moment?
推荐答案
因此，如果您不使用synchronous()，则可以安全地从doWork()执行网络同步呼叫.从设计的角度来看，这也是一种更好的方法，因为回调是杂乱的.
Therefore, if you don't use synchronous(), you can safely perform sync network calls from doWork(). This is also a better approach from design perspective because callbacks are messy.
也就是说，如果您确实要从doWork()触发异步作业，则需要暂停执行线程，并使用wait/notify机制(或某些其他线程管理机制，例如).在大多数情况下，我不建议这样做.
That said, if you really want to fire async jobs from doWork(), you'll need to pause the execution thread and resume it upon async job completion using wait/notify mechanism (or some other thread management mechanism e.g. Semaphore). Not something I would recommend in most cases.
请注意，WorkManager处于早期测试阶段.
As a side note, WorkManager is in very early alpha.
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