软硬件环境
- macOS
- Android studio
- Android 5.1.1
前言
在带有Ethernet的Android设备中,在系统信息页面上都会去显示其对应的MAC地址,本文就去获取网卡的MAC。
部分代码
private static final String ETH0_MAC_ADDR = "/sys/class/net/eth0/address" ;
/*
* 获取mac号
* */
private String getWireMacAddr() {
    try {
        return readLine(ETH0_MAC_ADDR);
    } catch (IOException e) {
        Log.e(TAG,
                "IO Exception when getting eth0 mac address",
                e);
        e.printStackTrace();
        return "unavailable";
    }
}
private static String readLine(String filename) throws IOException {
    BufferedReader reader = new BufferedReader(new FileReader(filename), 256);
    try {
        return reader.readLine();
    } finally {
        reader.close();
    }
}


