获取SSID当WIFI连接 [英] Get SSID when WIFI is connected

问题描述

我试图让WIFI网络的SSID，当我的Andr​​oid设备连接到WIFI。

I'm trying to get the SSID of the WIFI network when my android device is connected to WIFI.

我注册一个BroadcastReceiver监听 android.net.wifi.supplicant.CONNECTION_CHANGE 。我得到的通知时WIFI断开或重新连接。不幸的是，我不能让网络的SSID。

I've registered a BroadcastReceiver listening for android.net.wifi.supplicant.CONNECTION_CHANGE . I get the notification when WIFI is disconnected or reconnected. Unfortunately, I can't get the network's SSID.

我用下面的code，找到SSID：

I'm using the following code to find the SSID:

WifiManager wifiManager = (WifiManager) context.getSystemService(context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
String ssid = wifiInfo.getSSID();

取而代之的是SSID的

，我得到的字符串 ＆LT ;未知SSID＆GT; 回

Instead of the SSID, I get the string <unknown ssid> back.

这些都是在清单中的权限（我已经添加ACCESS_NETWORK_STATE只是为了检查，我实际上并不需要它）

These are the permissions in the manifest (I've added ACCESS_NETWORK_STATE just to check, I don't actually need it)

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

为什么会出现这种情况？我怎样才能得到实际的SSID？是广播被炒到了年初，连接建立之前？有另一种广播我应该听？我感兴趣的只是WIFI连接，没有3G连接。

Why does this happen? How can I get the actual SSID? Is the broadcast fired to early, before the connection is established? Is there another broadcast I should listen to? I'm only interested in WIFI connections, not 3G connections.

更新：我刚才检查， wifiInfo.getBSSID（）返回null

Update: I just checked, wifiInfo.getBSSID() returns null.

推荐答案

我在广播接收器监听WifiManager.NETWORK_STATE_CHANGED_ACTION

I listen for WifiManager.NETWORK_STATE_CHANGED_ACTION in a broadcast receiver

if (WifiManager.NETWORK_STATE_CHANGED_ACTION.equals (action)) {
        NetworkInfo netInfo = intent.getParcelableExtra (WifiManager.EXTRA_NETWORK_INFO);
        if (ConnectivityManager.TYPE_WIFI == netInfo.getType ()) {

我检查netInfo.isConnected（）。然后，我可以使用

I check for netInfo.isConnected (). Then I am able to use

WifiManager wifiManager = (WifiManager) getSystemService (Context.WIFI_SERVICE);
WifiInfo info = wifiManager.getConnectionInfo ();
info.getBSSID ();

这篇关于获取SSID当WIFI连接的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！