Android : how to get imageview height and width after pinch zoom?

In my application I want to get image view height and width after zoom the image.This is the code for zoom the image view.

public boolean onTouch(View v, MotionEvent event) {
    // TODO Auto-generated method stub
        ImageView view = (ImageView) v;
        view.setScaleType(ImageView.ScaleType.MATRIX);
        float scale;

        // Handle touch events here...
        switch (event.getAction() & MotionEvent.ACTION_MASK) {
            case MotionEvent.ACTION_DOWN:  // first finger down only
                savedMatrix.set(matrix);
                start.set(event.getX(), event.getY());
                Log.d(TAG, "mode=DRAG"); // write to LogCat
                mode1 = DRAG1;
                break;

            case MotionEvent.ACTION_UP: // first finger lifted
                x_cordinate=event.getX();
                y_cordinate=event.getY();

                Log.e("height====",""+dragImage.getHeight());
                Log.e("width=====",""+dragImage.getWidth());

                Log.e("x_cordinate==",""+x_cordinate);
                Log.e("y_cordinate==",""+y_cordinate);

                break;

            case MotionEvent.ACTION_POINTER_UP: // second finger lifted
                mode1 = NONE1;
                Log.d(TAG, "mode1=NONE1");
                break;

            case MotionEvent.ACTION_MOVE:

                if (mode1 == DRAG1){ 
                    matrix.set(savedMatrix);
                    matrix.postTranslate(event.getX() - start.x, event.getY() - start.y); // create the transformation in the matrix  of points
                } 
                else if (mode1 == ZOOM1){ 
                    // pinch zooming
                    float newDist = spacing(event);
                    Log.d(TAG, "newDist=" + newDist);
                    if (newDist > 5f){
                        matrix.set(savedMatrix);
                        scale = newDist / oldDist; // setting the scaling of the
                        matrix.postScale(scale, scale, mid.x, mid.y);
                    }

                }
                break;

            case MotionEvent.ACTION_POINTER_DOWN:
                oldDist = spacing(event);
                Log.d(TAG, "oldDist=" + oldDist);
                if (oldDist > 10f) {
                    savedMatrix.set(matrix);
                    midPoint(mid, event);
                    mode1 = ZOOM1;
                    Log.d(TAG, "mode=ZOOM" );
                }               
                break;

        }

        view.setImageMatrix(matrix); // display the transformation on screen
        return true; // indicate event was handled

    }

In this switch case MotionEvent.ACTION_UP, I am getting the image view height and width. But these values are same after zoom the image also.So please suggest me how to do? Thanks In advance to all..