dp2px px2dp

/**
     *  dp   px
     * @param context
     * @param dpValue
     * @return
     */
    public static int dip2px(Context context,float dpValue){
        final float scale = context.getResources ().getDisplayMetrics ().density;
        return (int) (dpValue * scale + 0.5f);
    }

    /**
     *       dp
     * @param context
     * @param pxValue
     * @return
     */
    public static int px2dip(Context context,float pxValue){
        final float scale = context.getResources ().getDisplayMetrics ().density;
        return (int) (pxValue / scale + 0.5f);
    }