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int num = 5;
        int screenWidth = AndroidUtils.getScreenWidthAndHeight(getContext())[0];
        while ((screenWidth - paddingLeftAndRight * 2 - mWidth * num) <= 40) {
            num--;
        }
        this.setNumColumns(num);
        spacing = (screenWidth - paddingLeftAndRight * 2 - mWidth * num)
                / (num - 1);
        this.setPadding(paddingLeftAndRight, 0, paddingLeftAndRight, 0);
        this.setHorizontalSpacing(spacing);