java - Android wifimanager启用网络似乎启用了错误的网络

Question

我制作了一个 Android 应用程序，它在启动时获取当前的 wifi 网络并连接到另一个网络。至少这是它应该做的:

wifiInfo = wifiManager.getConnectionInfo();
OldNetworkID = wifiInfo.getNetworkId(); //save current network
WDTNetworkID = wifiManager.addNetwork(wificonfiguration); //add new network
wifiManager.disconnect();
wifiManager.enableNetwork(WDTNetworkID, true); //enable new network and disable all others
wifiManager.reconnect();

当我调试时，我可以看到 wificonfiguration 包含正确的 SSID(新网络的 SSID)。

在 addNetwork() 之后，我看到 wifiManager.getConfiguredNetworks() 包含这个新网络，该网络具有正确的 SSID 以及与 WDTNetworkID 相同的网络 ID。此时网络已启用。

但是在启用 enableNetwork() 而不是启用 WDTNetworkID 并禁用其余部分后，我看到 OldNetworkID 已启用，其余部分已禁用。

我做错了什么吗？

我在调试时添加了几 block watch 的图片。您可以在这里看到旧网络已启用，其余网络已禁用。

Answer 1

这里的问题是应用程序运行的设备是android 5.1.1。正如 enableNetwork() 文档中所述:

Note: If an application's target SDK version is LOLLIPOP or newer, network communication may not use Wi-Fi even if Wi-Fi is connected; traffic may instead be sent through another network, such as cellular data, Bluetooth tethering, or Ethernet. For example, traffic will never use a Wi-Fi network that does not provide Internet access (e.g. a wireless printer), if another network that does offer Internet access (e.g. cellular data) is available. Applications that need to ensure that their network traffic uses Wi-Fi should use APIs such as bindSocket(java.net.Socket), openConnection(java.net.URL), or bindProcessToNetwork(Network) to do so.