如何设置Edittext视图只允许两个数值和两个十进制值,如##.##

Question

我需要为edittext视图设置验证应该允许两个数值和两个十进制值.例如:22.32

请让我知道如何进行此验证

提前致谢

Answer 1

试试吧.我吮吸正则表达式,所以它可能不是最好的,但试一试.

    EditText text = new EditText(this);
    InputFilter[] filters = new InputFilter[1];
    filters[0] = new InputFilter() {
        public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
            if (end > start) {
                String destTxt = dest.toString();
                String resultingTxt = destTxt.substring(0, dstart) + source.subSequence(start, end) + destTxt.substring(dend);
                if (!resultingTxt.matches("^\\d(\\d(\\.\\d{0,2})?)?")) {
                    return "";
                }
            }
        return null;
        }
    };
    text.setFilters(filters);