大家好，请问如何在 android 中配置 wifi 呢，谢谢！
# ./iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
wmaster0 no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:""
Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated
Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:on
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
sit0 no wireless extensions.
# ./iwlist wlan0 scan
wlan0 No scan results
# dhcpcd wlan0
wlan0: dhcpcd 4.0.1 starting
wlan0: waiting for carrier
wlan0: host does not support a monotonic clock - timing can skew
wlan0: timed out
wlan0: received SIGINT, stopping
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