Android Camera preview zoom using double finger touch

Question

I am trying to do zoom using double finger touch gesture in the camera preview mode. But i unable to do that. I have done that Zoom control on the ImageView and it\'s working fi

Answer 1

I got the solution of my problem, Following is the solution.

 case MotionEvent.ACTION_MOVE:


              if (mode == ZOOM) {
                float newDist = spacing(event);

                double zoomDist = newDist-oldDist;

                if(zoomDist > 0){
                    if(zoomDist > 50 && zoomDist <= 200){

                        if (curZoomLevel < mZoomMax && gestureZoom == 0) {
                            gestureZoom ++;
                            GestureZoomIn();
                        }

                    }else if(zoomDist > 200 && zoomDist <= 300){


                        if (curZoomLevel < mZoomMax && gestureZoom == 1) {

                            gestureZoom ++;
                            GestureZoomIn();
                        }
                    }else if(zoomDist > 300 && zoomDist <= 400){

                        if (curZoomLevel < mZoomMax && gestureZoom == 2) {

                            gestureZoom++;
                            GestureZoomIn();
                        }

//

 private void GestureZoomIn(){
       if (mParameters.isZoomSupported()){
            mZoomMax = mParameters.getMaxZoom();
            if (zoom_text_value

//

private void GestureZoomOut(){
       if (mParameters.isZoomSupported()){

            if (0

The above code i used to implement the multi zoom in camera review.