Android：Utils

一、NumberFormat

/**
     * Number formatter for integers
     */
    public static final NumberFormat FORMAT_INT = NumberFormat.getIntegerInstance();

textView.setText(FORMAT_INT.format(number));

 

二、

    /**
     * 计算页数
     *
     * @param total 总数
     * @param count 单页数目
     */
    public static int calculatePage(int total, int count) {
        if (total == 0 || count == 0) {
            return 0;
        }
        if (total <= count) {
            return 1;
        }
        int page = total / count;
        if (total % count > 0) {
            return page + 1;
        } else {
            return page;
        }
    }

三、

 public static boolean isDigits(String str) {
        return (str != null) && TextUtils.isDigitsOnly(str);
    }