在Android的分辨率参数相机意图 [英] Camera intent with resolution parameters in Android

问题描述

我建立一个Android应用程序，其中的部分功能包括用户拍摄的图像和录制视频。

I am building an Android application where part of the functionality involves users taking images and recording video.

有关的应用程序，有必要设定为图像和视频特定的分辨率。 是否可以指定分辨率参数，然后用相机意图捕捉图像和视频，或我需要建立自己的相机活动？

For the application there is a need to set a specific resolution for both the images and the video. Is it possible to specify the resolution parameters and then use a camera intent to capture images and video or do I need to build my own camera activity?

任何意见将是极大的AP preciated。

Any advice would be greatly appreciated.

编辑：我做了一些额外的研究，并有一看<一href="http://developer.android.com/guide/topics/media/camera.html#intents">http://developer.android.com/guide/topics/media/camera.html#intents.

I did some additional research and had a look at http://developer.android.com/guide/topics/media/camera.html#intents.

如果我理解正确使用图像捕捉意图http://developer.android.com/reference/android/provider/MediaStore.html#ACTION_IMAGE_CAPTURE.

If I understand correctly there is no option to specify resolution parameters when using the Image capture intent http://developer.android.com/reference/android/provider/MediaStore.html#ACTION_IMAGE_CAPTURE.

有关视频拍摄意图看来我必须使用额外的视频质量参数的选项，但是，只有给我的高质量和低质量（这我不太清楚对应于分辨率方面）的选项<一href="http://developer.android.com/reference/android/provider/MediaStore.html#EXTRA_VIDEO_QUALITY">http://developer.android.com/reference/android/provider/MediaStore.html#EXTRA_VIDEO_QUALITY

For the Video capture intent it seems I have the option to use the Extra Video Quality parameter, however that only gives me the option of high quality and low quality (which I am not quite sure what corresponds to in terms of resolution) http://developer.android.com/reference/android/provider/MediaStore.html#EXTRA_VIDEO_QUALITY

看来我最开始开发自己的图像和视频的活动的话，除非我错过了一些其他的选择的图像和视频的意图。

It seems I best get started developing my own image and video activities then, unless I missed some other options with the image and video intent.

推荐答案

相机意图开始外置摄像头applciation可能使用你的提示（但可能没有）。活动/应用程序是非标准（手机厂商的依赖），以及具体实施相机软件。

Camera intent starts external camera applciation which MAY use your hints (but MIGHT NOT). The activity/application is non standard (phone vendor dependent), as well as the concrete implementation of the camera software.

您也可以使用相机API（工作的例子是在这个项目中： http://sourceforge.net/项目/ javaocr / ），它可以让你：

You can also use the camera api ( working examples are in this project: http://sourceforge.net/projects/javaocr/ ) which allows you to:

• 支持的查询图像格式和分辨率（你猜对了 - 供应商的依赖）
• 设置了preVIEW和capure分辨率和格式（但摄像头的软件是可以忽略此设置，一些格式和分辨率，尽管会产生怪异的异常被宣传为支持）

结论：在Android设备上的相机不同，相机API是underdocumented一塌糊涂。所以，要作为防御性越好。

Conclusion: cameras in android devices are different and the camera API is underdocumented mess. So be as defensive as possible.

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