Getting image from SurfaceView to ImageView?

Question

I\'m having a little trouble of getting an image/drawable or a bitmap from a SurfaceView that works as a camera preivew.

    final CameraSurfaceView cameraSurfac         


        

Answer 1

It's far more complicated than that. The background of the SurfaceView is not the camera preview. You have to have a class that implements Camera.PreviewCalback. Once you have that, you can get a byte array containing the image that the preview sends. On some phones, you can set the preview to be a JPEG in which case you can decode it straight with BitmapFactory. On other phones that don't support that feature, you'll get by default a YUV 4:2:0 image that you have to convert into a JPEG image.

On Android 2.2+, you can convert the YUV image to a JPEG like so:

   int w = params.getPreviewSize().width;
   int h = params.getPreviewSize().height;
   int format = params.getPreviewFormat();
   YuvImage image = new YuvImage(data, format, w, h, null);

   ByteArrayOutputStream out = new ByteArrayOutputStream();
   Rect area = new Rect(0, 0, w, h);
   image.compressToJpeg(area, 50, out);
   Bitmap bm = BitmapFactory.decodeByteArray(out.toByteArray(), 0, out.size());
   ivCam.setImageBitmap(bm);

If you're targeting older models, you have to use a conversion algorithm like the one here.

http://blog.tomgibara.com/post/132956174/yuv420-to-rgb565-conversion-in-android

A SO source:

Getting frames from Video Image in Android

EDIT: If all you want is to show the camera view, then you just add the SurfaceView that your camera is using to a layout that is already displayed like you did in your question. It's already displaying it.