Android ViewPager 滞后 [英] Android ViewPager Lag

问题描述

您好，我有一个带有多个页面的视图分页器(使用片段状态分页器)，以及一些 png 作为这些页面的背景.我已经按照 Ui 中的显示位图 (http://developer.android.com/training/display-bitmaps/display-bitmap.html) 所以我已经在后台线程中缓存和设置可绘制的图像.但是在切换寻呼机页面时我仍然会遇到一些滞后.在每个片段上，我只对 onCreateView() 方法的视图进行膨胀，所以我不知道是什么导致了这种滞后.我可以做些什么来消除这种滞后/断断续续的影响?

Hello I have a viewpager with several pages(using a fragment state pager), and some pngs as backgrounds to those pages. I already followed the Displaying Bitmaps in the Ui (http://developer.android.com/training/displaying-bitmaps/display-bitmap.html) so I am already caching and setting the image drawable in a background thread. But I still get some lag when swithcing pages of the pager. On Each fragment, I only inflate the view on the onCreateView() method, so I have no Idea what may be causing this lag. What can I do to remove this lag/choppy effect?

推荐答案

我也遇到了类似的问题.

I had similar problem.

我正在显示类似教程的页面.每页都是全屏jpg.

I am showing tutorial-like pages. Each page is a full screen jpg.

一开始，我把图片放在res/drawables文件夹中.浏览器在滑动时非常滞后.

At first, I put the pictures in res/drawablesfolder. The viewpager is very laggy when swiping it.

然后我将这些 jpg 文件移动到 res/drawable-hdpi 文件夹，延迟消失了.

Then I move those jpgs to res/drawable-hdpi folder, the lag is gone.

我认为根据文件夹对图片进行了不同的优化.所以我们不能把所有东西都放在 res/drawable 文件夹中

I think different optimisations are done on the pictures based on folder. So we cannot put everything in res/drawable folder

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