当使用时不要在Android中使用的片段？ [英] When to use and when not to use fragments in Android?

问题描述

我在Android的新的和我想打一个应用程序，所以，我看到了很多的教程和一些人说，我需要使用的片段，但在其他的教程说，如果我想，或者只在我的应用是平板电脑。所以，我真的让我混淆这个，当我不得不使用片段时，我没有。

请，给我解释一下什么时候使用碎片或不用时。谢谢

解决方案

  

一个片段是可由一个一起使用的独立分量
  活动。片段封装功能，以便更容易
  活动和布局中重用。

http://www.vogella.com/articles/AndroidFragments/article。 HTML片段＃

  

的但在其他的教程说，如果我想，或者只在我的应用是平板电脑的

您提到的那些教程大概意思是：

  

片段可以很容易地重新使用不同的布局组件，例如
  你可以建立手机（电话）单面板的布局和多窗格
  布局片。这并不限于片;比如你
  可以使用碎片还能够支持不同的布局和景观
  在智能手机上纵向。

http://www.vogella.com/articles/AndroidFragments/article。 HTML＃fragments_usage

当有你不想留出空白空间大幕。当屏幕太小，你不想挤一切。解决的办法是有2个不同的布局重用尽可能多code越好。这是当片段是特别方便。

I am new in Android and I want to make an app, so, I was seeing a lot of tutorials and a few of them said that I need to use fragment, but in others tutorials say that if I want or only when my app is for Tablets. So, I really get me confuse about this, when I have to use fragment and when I not.

Please, explain to me when to use fragments or when not. thanks

解决方案

A fragment is an independent component which can be used by an activity. A fragment encapsulate functionality so that it is easier to reuse within activities and layouts.

http://www.vogella.com/articles/AndroidFragments/article.html#fragments

but in others tutorials say that if I want or only when my app is for Tablets

Those tutorials you mentioned probably meant this:

Fragments make it easy to reuse components in different layouts, e.g. you can build single-pane layouts for handsets (phones) and multi-pane layouts for tablets. This is not limited to tablets; for example you can use fragments also to support different layout for landscape and portrait orientation on a smartphone.

http://www.vogella.com/articles/AndroidFragments/article.html#fragments_usage

When there is a big screen you don't want to leave empty space. When the screen is too small you don't want squeeze everything. The solution is to have 2 different layouts reusing as much code as possible. That is when Fragments are especially handy.

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