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luckybilly avatar luckybilly commented on August 27, 2024

@antty 谢谢你的关注,就你抛出的问题我说一下我的理解吧:
1.1 网络请求的预加载是一个比较常见的使用场景,从它的工作原理介绍可以看到,主要是将UI初始化和网络请求从串行转化为并行,UI比较复杂的页面其初始化时间会比较长,这种场景下,预加载能缩短用户在页面打开时的等待时间。
1.2 预加载的时机可根据业务特性继续往前延伸,比如,一般应用的Splash界面之后必定会跳到主页,而主页面的网络请求往往很多,这时候就可以在Splash页面开启时就预加载主页面中的网络请求
1.3 预加载功能不仅仅能用来进行网络请求,当你发现有耗时操作增加了用户从页面打开到可操作(或内容可见)的时长,但这些操作是必须提前完成的,这时就可以考虑使用预加载来进行优化。例如:文件I/O、网络请求、数据库操作、图片加载等等

  1. 关于业务隔离:数据的加载(DataLoader)和数据的读取(DataListener)应该内聚在同一个模块内部,通过服务暴露的形式提供给外部调用。接口的维护完全在模块内部进行维护,只不过给外部留了一个开启预加载的口子。 尤其适合组件化开发环境下使用,例如CC

补充一条: 使用PreLoader能更有利于将数据的加载和数据的使用进行分离(数据的归数据,业务的归业务)

以上!

from preloader.

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