AsyncOperation.priority 异步操作 优先权

var priority : int

Description描述

Priority lets you tweak in which order async operation calls will be performed.

优先权，让你调整异步操作调用将被执行的顺序。

When multiple asynchronous operations are queued up, the operation with the higher priority will be executed first. Once an operation has been started on the background thread, changing the priority will have no effect anymore.

当多个异步操作排队，较高优先权的操作将被首先执行， 一旦操作在后台线程启动，改变优先权再也不会有任何效果。