private static String getSystemPropertyByShell(final String propName) {
        String line;
        BufferedReader input = null;
        try {
            Process p = Runtime.getRuntime().exec("getprop " + propName);
            input = new BufferedReader(new InputStreamReader(p.getInputStream()), 1024);
            String ret = input.readLine();
            if (ret != null) {
                return ret;
            }
        } catch (IOException ignore) {
        } finally {
            if (input != null) {
                try {
                    input.close();
                } catch (IOException ignore) {/**/}
            }
        }
        return "";
    }
/}
        return UNKNOWN;
    }

    private static String getBrand() {
        try {
            String brand = Build.BRAND;
            if (!TextUtils.isEmpty(brand)) {
                return brand.toLowerCase();
            }
        } catch (Throwable ignore) {/*
app/src/main/java/com/example/jingbin/webviewstudy/utils/RomUtils.java