我想写一个应用程序，使得使用的相机拍摄极其缓慢的帧速率视频和上传。现在我看在这个： http://itp.nyu.edu/~sve204 /mobilemedia_spring10/androidCamera101.pdf

I wanted to write an application that makes use of the camera taking extremely slow frame-rate video and uploading it. Right now I am reading over this: http://itp.nyu.edu/~sve204/mobilemedia_spring10/androidCamera101.pdf

我的问题是在问候相机的使用。上面的文章使用了一个画布preVIEW形象，如果一个人不想preVIEW服用，可能是做之前的形象呢？是否有必要使用相机图像的preVIEW或者我可以叫takepicture进行拍摄，赶上产生的回调将其保存到一个文件？如果是这样怎么会是做什么？

My question was in regards to the camera's use. The above article makes use of a canvas to preview the image, if one didn't want to preview the image before taking it could that be done? Is it necessary to use a preview of the camera image or can I just call takepicture to take the picture and catch the resulting callback to save it to a file? If so how would that be done?

（这是一个很长的时间，因为我已经做了在Java中任何编程）

(It's been a long time since I've done any programming in Java)

推荐答案

问：如果一个人没有服用之前要preVIEW图像可能是做搜索？答：没有。检查出点6 @ http://developer.android.com/reference/android/硬件/ Camera.html

Q:If one didn't want to preview the image before taking it could that be done? A:No. Check out point 6 @ http://developer.android.com/reference/android/hardware/Camera.html

重要提示：呼叫开始preVIEW（）开始更新preVIEW表面。 preVIEW必须先启动，然后才可以进行拍摄。

Important: Call startPreview() to start updating the preview surface. Preview must be started before you can take a picture.

问：是否有必要使用相机图像的preVIEW结果。答：按照使用的形象的preVIEW，你的意思设置 camera.set previewCallback（...）？如果是这样，不，它不是。但你仍然需要preVIEW画在画布前，你可以拍照，否则用户应该如何知道照片怎么会什么样子的？

Q:Is it necessary to use a preview of the camera image. A:By "using" a preview of the image, do you mean setting the camera.setPreviewCallback(...)? If so, no, it is not. But you still need the preview to draw to a canvas before you can take a picture, or else how is the user supposed to know how the picture will look like?

问：我可以叫takepicture进行拍摄，赶上产生的回调将其保存到一个文件结果？答：是的，你可以使用 camera.takePicture（...）

Q:Can I just call takepicture to take the picture and catch the resulting callback to save it to a file? A:Yes you may by using camera.takePicture(...)