gistfile1.txt

   @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        v = inflater.inflate(R.layout.xxxx, container, false);
        gridView = (GridView)v.findViewById(R.id.gridview);

        gridView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                if (gridView.getColumnWidth()>0) {
                    seteGridviewHeight(gridView,จำนวนitem,gridView.getNumColumns());
                    gridView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
                }
            }
        });

        return v;
    }
    
    
        private void seteGridviewHeight(GridView gridView, float itemCount,float numColumn) {
        int row = (int) Math.ceil((itemCount + 1f) / numColumn);
        Log.d("debug", "-------row = " + row);
        int height = (imageHeight * row);  // imageHeight = ความสูงของแต่ละแถวหรือความสูงของรูป
        height += (row - 1) * verticalSpacing;
        gridView.getLayoutParams().height = height;
    }