如何找到使用 Intent MediaStore.ACTION_IMAGE_CAPTURE 拍摄的照片的方向? [英] How can I find the orientation of a picture taken with Intent MediaStore.ACTION_IMAGE_CAPTURE?

问题描述

当我使用 Android 的相机应用拍照时，它会检测手机的方向并相应地保存照片.因此，如果我拍摄建筑物的照片，屋顶将在顶部，无论我是横向还是纵向握住手机.

When I take a picture with Android's camera app, it detects the phone's orientation and saves the picture accordingly. So if I take a picture of a building, the roof will be on the topside, whether I hold the phone in landscape position or portrait.

但是，当我使用

Intent imageCaptureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

要获取图片，相机应用程序不会对方向做出反应.如果我垂直握住手机(纵向)，生成的图片将旋转，所述建筑物的屋顶位于屏幕左侧.

to get a picture, the camera app doesn't react to the orientation. If I hold the phone vertically (portrait), the resulting picture will be rotated, with said building's roof to the left of the screen.

如何设置 Intent 以便相机将方向考虑在内?

How can I set the intent so that the camera will take the orientation into account?

或者我可以以某种方式推断照片是在哪个方向拍摄的，然后自己旋转它?

Or can I deduce in some way in what orientation the picture was taken and rotate it myself afterwards?

或者还有其他方法吗?

推荐答案

我找到了答案.图片的 Exif 具有方向指示符.以防万一，Exif 可以像这样在 Android 中查看:

I found the answer. The Exif of the image has an indicator of the orientation. Just in case, Exif can be viewed in Android like this:

ExifInterface exif = new ExifInterface("filepath");  
exif.getAttribute(ExifInterface.TAG_ORIENTATION);

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