Android ViewPager延迟 [英] Android ViewPager Lag

问题描述

你好，我有一个viewpager，其中有几个页面(使用片段状态页面)，还有一些png作为这些页面的背景.我已经遵循了Ui中的显示位图( http://developer.android.com/training/display-bitmaps/display-bitmap.html )，因此我已经在后台线程中缓存并设置了可绘制图像.但是，在切换传呼机的页面时，我仍然会有些滞后.在每个片段上，我只增加onCreateView()方法上的视图，所以我不知道是什么原因导致了这种滞后.我该怎么办才能消除这种滞后/震荡效果?

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.

首先，我将图片放在res/drawables文件夹中.滑动时，viewpager太笨拙了.

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

然后我将这些jpg移到res/drawable-hdpi文件夹中，滞后消失了.

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

我认为对基于文件夹的图片进行了不同的优化.因此，我们不能将所有内容都放在res/drawable文件夹

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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