CameraX PreviewView Screenshot

Question

I want to convert CameraX preview to bitmap from previewView. Something similar to textureView.bitmap

I have tried it with a textureview and it works perferctly, i can take a screenshot of the cameraview but the camera is stretched.

score 6 · Accepted Answer · answered Jul 17 '20 at 18:28

6

PreviewView now supports screenshot by calling PreviewView.getBitmap(). See: https://developer.android.com/reference/androidx/camera/view/PreviewView#getBitmap()

answered Jul 17 '20 at 18:28

Xi 张熹

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Yes i just saw this and changed it accordingly. Thank you for your answer. Cheers. – areyouSEARious Jul 18 '20 at 12:07
How can we add effects like black & white and greyscale in camerax preview? – Astha Garg Dec 19 '22 at 11:05

score 2 · Answer 2 · answered May 16 '20 at 12:49

I finally found the answer in this link

First set preferred implementationmode to TextureView as below:

previewView.preferredImplementationMode = PreviewView.ImplementationMode.TEXTURE_VIEW

Then get the bitmap

fun getPreviewViewBitmap(width: Int, height: Int): Bitmap? {
    val previewChildView = previewView.getChildAt(0)

    if (previewChildView is TextureView)
        return previewChildView.getBitmap(width, height)

    return null
}

Note: I have only tested on a few devices and it works great.

Cheers.

It should work without the specific implementation mode too. — Xi 张熹, Dec 19 '22 at 16:43

CameraX PreviewView Screenshot

2 Answers2

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