将Android前置摄像头翻转预览以进行条形码扫描

Question

I have an application that scan barcode with the Android device cameras. I take the example program here: https://github.com/journeyapps/zxing-android-embedded

Now, I want to scan a barcode with my device front camera. On that sample solution there's a button that allow you to take a barcode by front camera, but the problem is that the Preview image of camera is "flipped", like on a mirror, and so the application can't read the barcode.

Is there a method to overcome this problem and to make sure that the recorded image is displayed correctly?

Answer 1

This mirroring is hardcoded into the camera service, and can not be disabled.

Try applying a transformation matrix to a TextureView. As per Prevent flipping of the front facing camera

This works for API level >= 14