Android获取mac地址、OA地址和外网IP地址

获取Mac地址：

public static String GetMAC(Context context) {    String Mac = "";    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && Build.VERSION.SDK_INT <= Build.VERSION_CODES.N) {        Mac = getMacAddress();    } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {        Mac = getMacFromHardware();    }    return Mac;}private static String getMacAddress() {    String Mac = null;    String str = "";    try {        Process pp = Runtime.getRuntime().exec("cat/sys/class/net/wlan0/address");        InputStreamReader ir = new InputStreamReader(pp.getInputStream());        LineNumberReader input = new LineNumberReader(ir);        while (null != str) {            str = input.readLine();            if (str != null) {                Mac = str.trim();//去空格                break;            }     

来源地址：https://blog.csdn.net/wxx314165038/article/details/131305199