android - 无需预览即可捕获视频

Question

我想在不显示预览的情况下拍摄视频。这里的 android 文档说这是可能的，但没有解释如何:

http://developer.android.com/guide/topics/media/camera.html#capture-video

Note: It is possible to use MediaRecorder without creating a camera preview first and skip the first few steps of this process. However, since users typically prefer to see a preview before starting a recording, that process is not discussed here.

要跳过的“前几步”是什么？

谢谢

Answer 1

您误解了文档。它真正说的是什么(强调我的):

It is possible to use MediaRecorder without creating a camera preview first and skip the first few steps of this process. However, since users typically prefer to see a preview before starting a recording, that process is not discussed here.

换句话说，您可以创建预览并立即开始录制。没有提示 MediaRecorder 会让您运行隐藏的录制 session 。

此外，我同意文档中的观点，即在开始录制之前不开始预览的附加值可以忽略不计。