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Android：Bundle Vs java.util collections 和 Z063A5BC470661C971C7909BCE1 有什么区别

[英]Android: what is the difference between Bundle Vs java.util collections like HashMap

原文 2011-06-04 12:32:13 4 2 java/ android

What is the difference between Bundle Vs java.util collections like HashMap? Bundle Vs java.util collections 和 HashMap 有什么区别？

2 个解决方案

One difference I can see easily is that a Bundle allows you to put int, boolean, etc., into it while a HashMap seems to require you to convert them to/from objects.我可以轻松看到的一个区别是，Bundle 允许您将 int、boolean 等放入其中，而 HashMap 似乎需要您将它们转换为对象或从对象转换为对象。

A more important difference is that with a Bundle, every object it contains is parcelable.一个更重要的区别是，对于一个 Bundle，它包含的每个 object 都是可包裹的。 This allows Bundles to be used as service parameters and to be attached to intents / passed into activities.这允许捆绑包用作服务参数并附加到意图/传递到活动中。

A Bundle in Android is a tool the apps use to handle resources. Android 中的 Bundle 是应用程序用来处理资源的工具。 It has built in structure that lets the OS search bundles hierarchically to find a specific resource.它具有内置结构，可让操作系统分层搜索捆绑包以查找特定资源。

Yes, it is essentially a hash map, but it designed to be a specialized Android component, and not a general purpose data structure.是的，它本质上是一个 hash map，但它被设计为一个专用的 Android 组件，而不是通用数据结构。

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