Getting black screen capture with CameraView

[Priya Sindkar]

I am using CameraView Library for rendering camera surface view for video recording, picture capture results in a blank (black) screen.

[Muddi Walid]

Hi. Can you send me a snippet of your code?

[Priya Sindkar]

Kotlin code:

val cameraView = findViewById<CameraView>(R.id.camera_view)
PixelShot.of(cameraView).setResultListener(object : PixelShot.PixelShotListener {
            override fun onPixelShotSuccess(path: String?) {
                Log.d("TakePicture", "picture taken success")
            }

            override fun onPixelShotFailed() {
                Log.d("TakePicture", "picture taken failed")
            }

        }).save()

xml code :

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.otaliastudios.cameraview.CameraView
        android:id="@+id/camera_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        android:adjustViewBounds="true"/>
</android.support.constraint.ConstraintLayout>

SurfaceView is used somewhere in CameraView library. And the code from your library is:

private Bitmap getViewBitmap() {
        Bitmap bitmap;
        if (view instanceof TextureView) {
            bitmap = ((TextureView) view).getBitmap();
            Canvas canvas = new Canvas(bitmap);
            view.draw(canvas);
            canvas.setBitmap(null);
            return bitmap;
        } else {
            bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888);
            Canvas canvas = new Canvas(bitmap);
            view.draw(canvas);
            canvas.setBitmap(null);
        }
        return bitmap;
    }

In my case, the control is going to the else part.
Thanks..

[Muddi Walid]

The way CamereaView is build is not directly compatible with PixelShot. You need to gain access to the SurfaceView object in some way before you can take a picture. Also note that saving a picture of a SurfaceVeiw in PixelShot only works from API 24

[Priya Sindkar]

I thought so.. Thanks for your quick response.