WifiInfo getSSID 断开连接时返回最后一个 SSID

Question

我创建了一个需要处理 WiFi 的应用程序。我有这段代码

this.wifiManager = (WifiManager) this.context.getSystemService(Context.WIFI_SERVICE);

String currentSSID = wifiManager.getConnectionInfo().getSSID();

问题是当我已经连接到热点时当前的 SSID 是有效的但是当我断开连接时它返回最后一个热点的 SSID 而不是像 or 之类的null东西equivalent。

Answer 1

经过一些实验后，我发现当与 hospot 的连接丢失时，wifiInfo 不会更新，因此要修复它，您可以使用ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);boolean isConnected = manager.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnected();this.wifiManager = (WifiManager) this.context.getSystemService(Context.WIFI_SERVICE);String currentSSID = wifiManager.getConnectionInfo().getSSID();/*Surround your ssid with " when you compare it with the ssid of the wifimanagerbecause it will return your SSID surouded by quotes*/if(currentSSID.equals("\"" + your_net_ssid + "\"") && isConnected){ //You are realy connected to the hospot}else{ //The connection dont exist}希望这会很有用！