如何在Android中进行放大/缩小VideoView？ [英] How to perform zoom in/out on VideoView in android?

问题描述

我使用VideoView和放大器;从资源运行的视频。

I am using VideoView & running videos from resources.

我想知道，有没有办法通过它我可以上运行的视频进行放大/缩小功能？

I want to know, is there any way by which I can perform zoom in/out functionality on running video?

推荐答案

确定我有这个问题，并通过删除VideoView解决它，用的 TextureView 。那么你可以申请一个矩阵改造，其中包括大量的选项，包括变焦。

OK I had this issue and solved it by removing the VideoView and replaced it with a TextureView. You can then apply a Matrix transformation which includes lots of options including zooming.

的方法，我会用矩阵是分频器（）方法。您可以将多个效果pre和后，您可以查看文档。

The method for the Matrix I would use is the postScale() method. You can apply multiple effects pre and post, which you can view in the documentation.

修改

下面是我们使用正在运行的项目定制VideoView。您可以decalre它在XML布局，它有一个调用的函数 setMatrix（）这需要一个矩阵参数。原来的code是由亚历克斯·罗斯，我们再修改了它要处理的矩阵功能。

Here is a custom VideoView from a running project that we used. You can decalre it in XML Layouts and it has a function called setMatrix() which takes a Matrix argument. The original code was written by Alex Ross, we then modified it to deal with the Matrix functionality.

http://pastebin.com/KwQvBWs1

这篇关于如何在Android中进行放大/缩小VideoView？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！