private static String getBrand() {
        try {
            String brand = Build.BRAND;
            if (!TextUtils.isEmpty(brand)) {
                return brand.toLowerCase();
            }
        } catch (Throwable ignore) {/**/}
        return UNKNOWN;
    }
Return the rom's information.

@return the rom's information
app/src/main/java/com/example/jingbin/webviewstudy/utils/RomUtils.java