Zoom Camera2 Preview using TextureView

Question

i have a Problem with my Preview Zoom for the Camera2 API. I am using a TextureView.

I want to zoom only the preview Stream that was showed in the TextureView.

Answer 1

@arin Answer is working thank @arin just one thing zoom sensitivity too high.

To control this i make some changes in might be useful to you.

Change zoom_level data type to double

public int zoom_level = 1; to public double zoom_level = 1;

Then increase or decrease zoom_level with low value i use 0.4

if (current_finger_spacing > finger_spacing && maxzoom > zoom_level) {
        zoom_level = zoom_level + .4;
        //zoom_level++;
    } else if (current_finger_spacing < finger_spacing && zoom_level > 1) {
        zoom_level = zoom_level - .4;
        //zoom_level--;
      }