AlertDialog与AlertDialog.Builder [英] AlertDialog vs AlertDialog.Builder

问题描述

为什么会使用 AlertDialog.Builder 类而不是直接用于 AlertDialog 的方法，例如，为什么使用 AlertDialog.Builder.setCancellable 而不是 AlertDialog.setCancellable ?当然这是多余的情况吗?

Why would one use the AlertDialog.Builder class rather than the methods directly available to AlertDialog, For example, why use AlertDialog.Builder.setCancellable rather than AlertDialog.setCancellable? Surely this is a case of redundancy?

推荐答案

因为 AlertDialog.setCancellable 返回void，而 AlertDialog.Builder.setCancellable 返回 AlertDialog.生成器.

Because AlertDialog.setCancellable returns void and AlertDialog.Builder.setCancellable returns an AlertDialog.Builder.

这意味着构建器允许您以较少的冗长性链接一堆设置.这只是一个便利班

This means that the builder allows you to chain a bunch of settings with a little less verbosity. It's just a convenience class

这篇关于AlertDialog与AlertDialog.Builder的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！