获取Wifi Mac地址

增加权限

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> 

获取Mac地址

public static String getLocalMacAddress(Context c) {
    WifiManager wifi = (WifiManager) c.getSystemService(Context.WIFI_SERVICE);
    WifiInfo info = wifi.getConnectionInfo();
    return info.getMacAddress();
}

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