android里 dp 和 px互相转换

 public static int pixelToDp(Context context, int pxValue) {
        float scale = context.getResources().getDisplayMetrics().density;
        return (int) (pxValue / scale + 0.5f);
    }
    
    public static int dip2px(Context context, float dipValue) {
        float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dipValue * scale + 0.5f);
        }