我正在尝试以下操作:
sockfd = socket(AF_INET, SOCK_DGRAM, 0);
if (sockfd < 0) {
goto gotError;
}
lastlen = 0;
len = 100 * sizeof(struct ifreq); /* initial buffer size guess */
for ( ; ; ) {
buf = (char*)malloc(len);
if (buf == NULL) {
goto gotError;
}
ifc.ifc_len = len;
ifc.ifc_buf = buf;
if (ioctl(sockfd, SIOCGIFCONF, &ifc) < 0) {
但是,ioctl 只返回环回和 wifi 的接口:
(gdb) p ifc.ifc_ifcu.ifcu_req[0].ifr_ifrn.ifrn_name
$1 = "lo", '\000' <repeats 13 times>
(gdb) p ifc.ifc_ifcu.ifcu_req[1].ifr_ifrn.ifrn_name
$2 = "wlan0\000\000\000\000\000\000\000\000\000\000"
(gdb) p ifc.ifc_ifcu.ifcu_req[2].ifr_ifrn.ifrn_name
$3 = "\344\233\025j\000\000\000\000m\004\357k\005\000\000"
在清单中,有:
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
是否可以让蓝牙发现与 NDK 一起使用,还是我需要求助于 Java?