Android 以编程方式连接到wifi在新API上不起作用

我想以编程方式连接Wifi。我在我的旧设备（4年前买的）上做了一些测试，它工作得非常好。然而，当我在我的模拟器（android 8.1.0，API 27）上做一些测试时，它并没有工作。你有什么解释吗？（实际上，我可以在保存的设置网络上看到我的wifi，但设备未连接到wifi） 这是我的代码（我基本上是从堆栈溢出问题的答案中复制的：）：

以下是日志：

09-04 09:16:34.348 7410-8091/amiin.bazouk.application.com.localisationdemo V/rht: Configuring WPA
09-04 09:16:34.352 1725-2739/system_process I/WifiService: addOrUpdateNetwork uid=10079
09-04 09:16:34.352 1725-2739/system_process I/addOrUpdateNetwork:  uid = 10079 SSID "partner" nid=-1
09-04 09:16:34.357 1725-2497/system_process I/WifiService: getConfiguredNetworks uid=10014
09-04 09:16:34.377 1725-2041/system_process D/WifiConfigStore: Writing to stores completed in 21 ms.
09-04 09:16:34.381 1725-2497/system_process I/WifiService: disconnect uid=10079
09-04 09:16:34.383 7831-7831/? E/wpa_supplicant: nl80211: Failed to open /proc/sys/net/ipv4/conf/wlan0/drop_unicast_in_l2_multicast: No such file or directory
    nl80211: Failed to set IPv4 unicast in multicast filter
09-04 09:16:34.384 1725-2497/system_process I/WifiService: enableNetwork uid=10079 disableOthers=true
09-04 09:16:34.391 1397-3075/? W/audio_hw_generic: Hardware backing HAL too slow, could only write 0 of 720 frames
09-04 09:16:34.393 1725-2041/system_process D/WifiStateMachine: connectToUserSelectNetwork netId 8, uid 10079, forceReconnect = false
09-04 09:16:34.396 1725-2739/system_process I/WifiService: getConfiguredNetworks uid=10014
09-04 09:16:34.405 1397-3075/? W/audio_hw_generic: Hardware backing HAL too slow, could only write 0 of 720 frames
09-04 09:16:34.421 1397-3075/? W/audio_hw_generic: Hardware backing HAL too slow, could only write 0 of 720 frames
09-04 09:16:34.439 1725-2041/system_process D/WifiConfigStore: Writing to stores completed in 27 ms.
09-04 09:16:34.439 1725-2041/system_process E/WifiConfigManager: UID 10079 does not have permission to update configuration "partner"WPA_PSK
09-04 09:16:34.439 1725-2041/system_process I/WifiStateMachine: connectToUserSelectNetwork Allowing uid 10079 with insufficient permissions to connect=8
09-04 09:16:34.440 1725-2041/system_process D/WifiStateMachine: CMD_START_CONNECT sup state DisconnectedState my state DisconnectedState nid=8 roam=false
09-04 09:16:34.443 1725-2497/system_process I/WifiService: reconnect uid=10079
09-04 09:16:34.446 1562-1562/? E/wificond: Received error messsage: Operation not supported on transport endpoint
    NL80211_CMD_ABORT_SCAN failed
09-04 09:16:34.446 1562-1562/? W/wificond: Abort scan failed
09-04 09:16:34.447 1725-2041/system_process D/SupplicantStaIfaceHal: connectToNetwork "partner"WPA_PSK
    Network is already saved, will not trigger remove and add operation.
09-04 09:16:34.699 1725-2497/system_process D/WificondControl: Scan result ready event
09-04 09:16:34.715 1725-2041/system_process W/WifiConfigManager: Looking up network with invalid networkId -1

• 设置

  conf.BSSID

• 在

  conf.SSID

  和

  conf.preSharedKey

  之前和之后添加双引号（“）

---

Android 8.1+将不会直接连接到wifi首先在运行时为COURSE_LOCATION添加权限，然后它将连接

您可以发布日志吗？您应该尝试在真实设备上测试代码。正如您在日志中看到的，emulator无法检测ipv4设置，并且日志告诉您该操作不受支持。因此，您的code没问题，但你需要在真正的设备上进行测试，以检查它是否真的工作。@Maxouille我已经发布了日志。@Umair我最近没有设备，很遗憾……这就是为什么我尝试使用模拟器的原因……但我的朋友（离我很远）告诉我，它在他的新设备上不工作

09-04 09:16:34.348 7410-8091/amiin.bazouk.application.com.localisationdemo V/rht: Configuring WPA
09-04 09:16:34.352 1725-2739/system_process I/WifiService: addOrUpdateNetwork uid=10079
09-04 09:16:34.352 1725-2739/system_process I/addOrUpdateNetwork:  uid = 10079 SSID "partner" nid=-1
09-04 09:16:34.357 1725-2497/system_process I/WifiService: getConfiguredNetworks uid=10014
09-04 09:16:34.377 1725-2041/system_process D/WifiConfigStore: Writing to stores completed in 21 ms.
09-04 09:16:34.381 1725-2497/system_process I/WifiService: disconnect uid=10079
09-04 09:16:34.383 7831-7831/? E/wpa_supplicant: nl80211: Failed to open /proc/sys/net/ipv4/conf/wlan0/drop_unicast_in_l2_multicast: No such file or directory
    nl80211: Failed to set IPv4 unicast in multicast filter
09-04 09:16:34.384 1725-2497/system_process I/WifiService: enableNetwork uid=10079 disableOthers=true
09-04 09:16:34.391 1397-3075/? W/audio_hw_generic: Hardware backing HAL too slow, could only write 0 of 720 frames
09-04 09:16:34.393 1725-2041/system_process D/WifiStateMachine: connectToUserSelectNetwork netId 8, uid 10079, forceReconnect = false
09-04 09:16:34.396 1725-2739/system_process I/WifiService: getConfiguredNetworks uid=10014
09-04 09:16:34.405 1397-3075/? W/audio_hw_generic: Hardware backing HAL too slow, could only write 0 of 720 frames
09-04 09:16:34.421 1397-3075/? W/audio_hw_generic: Hardware backing HAL too slow, could only write 0 of 720 frames
09-04 09:16:34.439 1725-2041/system_process D/WifiConfigStore: Writing to stores completed in 27 ms.
09-04 09:16:34.439 1725-2041/system_process E/WifiConfigManager: UID 10079 does not have permission to update configuration "partner"WPA_PSK
09-04 09:16:34.439 1725-2041/system_process I/WifiStateMachine: connectToUserSelectNetwork Allowing uid 10079 with insufficient permissions to connect=8
09-04 09:16:34.440 1725-2041/system_process D/WifiStateMachine: CMD_START_CONNECT sup state DisconnectedState my state DisconnectedState nid=8 roam=false
09-04 09:16:34.443 1725-2497/system_process I/WifiService: reconnect uid=10079
09-04 09:16:34.446 1562-1562/? E/wificond: Received error messsage: Operation not supported on transport endpoint
    NL80211_CMD_ABORT_SCAN failed
09-04 09:16:34.446 1562-1562/? W/wificond: Abort scan failed
09-04 09:16:34.447 1725-2041/system_process D/SupplicantStaIfaceHal: connectToNetwork "partner"WPA_PSK
    Network is already saved, will not trigger remove and add operation.
09-04 09:16:34.699 1725-2497/system_process D/WificondControl: Scan result ready event
09-04 09:16:34.715 1725-2041/system_process W/WifiConfigManager: Looking up network with invalid networkId -1