限制小数位数

private static final int DECIMAL_DIGITS = 2;
private InputFilter decimalFilter = new InputFilter() {
    @Override
    public CharSequence filter(CharSequence source, int start, int end,
                               Spanned dest, int dstart, int dend) {
        // source:当前输入的字符
 // start:输入字符的开始位置
 // end:输入字符的结束位置
 // dest：当前已显示的内容
 // dstart:当前光标开始位置
 // dent:当前光标结束位置
 if (dest.length() == 0 && source.equals(".")) {
            return "0.";
        }
        String dValue = dest.toString();
        String[] splitArray = dValue.split("\\.");
        if (splitArray.length > 1) {
            String dotValue = splitArray[1];
            if (dotValue.length() == DECIMAL_DIGITS) {
                return "";
            }
        }
        return null;
    }

};

mBonusMoney.setFilters(new InputFilter[] {decimalFilter,new InputFilter.LengthFilter(5) });
mBonusondition.setFilters(new InputFilter[] {decimalFilter,new InputFilter.LengthFilter(5) });