Application.backgroundLoadingPriority 后台加载优先级

// Load as much data as possible, as a result frame rate will drop.// Good for fast loading when showing progress bars.//装载尽可能多的数据传输速率，因此帧将下降。 //加载时显示出良好的快速进度条。Application.backgroundLoadingPriority = ThreadPriority.High ;// Load data very slowly and try not to affect performance of the game.// Good for loading in the background while the game is playing.//加载数据速度非常慢，尽量不影响游戏性能的。 //在游戏进行时有很好的后台加载。Application.backgroundLoadingPriority = ThreadPriority.Low ;