Android设备-Raspberry Pi无法连接到Wifi

有几个问题也有类似的问题，但没有一个解决方案是有用的。我正在尝试将Android Things Raspberry Pi连接到Wifi。我的2.4 GHz wifi ssid是“蛋糕”，我甚至删除了密码短语，看看这是否有帮助。以下是日志中显示的内容：

09-20 01:37:00.340  1233  1233 D WifiSetupService: onStartCommand(Intent { act=WifiSetupService.Connect cmp=com.google.wifisetup/.WifiSetupService (has extras) })
09-20 01:37:00.341  1233  1233 I WifiConfigurator: Connecting to network with SSID "cake"
09-20 01:37:00.345  1233  1251 W WifiManager: com.google.wifisetup attempted call to setWifiApEnabled: enabled = false
09-20 01:37:00.346   311   546 D WifiService: setWifiEnabled: true pid=1233, uid=1000, package=com.google.wifisetup
09-20 01:37:00.349  1233  1233 V WifiWatcher: Network state changed to DISCONNECTED
09-20 01:37:01.258  1233  1251 D WifiConfigurator: Adding new network
09-20 01:37:01.873   311   380 E WifiConfigManager: Cannot find network with networkId -1 or configKey "cake"NONE
09-20 01:37:01.874   311   380 E WifiConfigManager: Cannot find network with configKey "cake"NONE
09-20 01:37:02.648   311   323 D WificondControl: Scan result ready event
09-20 01:37:03.423   311   380 D WifiConfigStore: Writing to stores completed in 1304 ms.
09-20 01:37:03.430   311   380 D WifiStateMachine: connectToUserSelectNetwork netId 0, uid 1000, forceReconnect = false
09-20 01:37:04.261   311   380 D WifiConfigStore: Writing to stores completed in 823 ms.
09-20 01:37:34.306  1233  1251 E WifiConfigurator: Wifi failed to connect in 30000 ms
09-20 01:39:49.672  1233  1233 D WifiSetupService: onStartCommand(Intent { act=WifiSetupService.Connect cmp=com.google.wifisetup/.WifiSetupService (has extras) })
09-20 01:39:49.673  1233  1233 I WifiConfigurator: Connecting to network with SSID "cake"
09-20 01:39:49.675  1233  1279 W WifiManager: com.google.wifisetup attempted call to setWifiApEnabled: enabled = false
09-20 01:39:49.676   311   322 D WifiService: setWifiEnabled: true pid=1233, uid=1000, package=com.google.wifisetup
09-20 01:39:49.681  1233  1279 D WifiConfigurator: Updating existing network 0
09-20 01:39:49.906   311   380 D WifiConfigStore: Writing to stores completed in 219 ms.
09-20 01:39:49.909   311   380 D WifiStateMachine: connectToUserSelectNetwork netId 0, uid 1000, forceReconnect = false
09-20 01:39:49.945   311   380 D WifiConfigStore: Writing to stores completed in 32 ms.
09-20 01:39:50.195   311   920 D WificondControl: Scan result ready event
09-20 01:40:19.980  1233  1279 E WifiConfigurator: Wifi failed to connect in 30000 ms

下面是我在adb shell中输入的内容

rpi3:/ $ am startservice -n com.google.wifisetup/.WifiSetupService -a WifiSetupService.Connect -e ssid cake

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我在设置Wifi时也遇到了一些问题。 布伦德尔对我的回答解决了这些问题

网络：如果同时使用以太网，则Wi-Fi无法连接到internet 连接到没有internet访问的网络

我必须从Pi-3上拔下以太网电缆，然后将其连接到我的WiFi

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如果Pi上未安装任何应用程序，则可以通过使用HDMI端口连接外部显示器来观察连接状态（显示器将完成此工作）

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您应该会看到这样一个屏幕：

是的，但是在您从中移除以太网电缆后，您是如何发现IP地址的？最简单的方法是：您可以通过hdmi将您的raspberry连接到监视器，这就是做到的！谢谢…在文档中没有提到这样一件可笑的事情。这个技巧同样适用于NXP i.MX7D Android things开发工具包。谢谢