Android WifiManager.addNetwork()返回-1
Android WifiManager.addNetwork()返回-1
提问于 2012-08-18 07:52:28
我正在编写一个android应用程序，它将连接到一个特定的WPA接入点，当连接时，它将发出一个http调用。它将不会保存网络配置。我读过几乎所有关于连接wifi网络的堆叠溢出的帖子，但是找不到对我有用的答案。这是我用来连接的代码。
WifiConfiguration wc = new WifiConfiguration();
wc.allowedAuthAlgorithms.clear();
wc.allowedGroupCiphers.clear();
wc.allowedPairwiseCiphers.clear();
wc.allowedProtocols.clear();
wc.allowedKeyManagement.clear();
wc.SSID = "\"".concat("<ssid>").concat("\"");
wc.preSharedKey = "\"".concat("<password>").concat("\"");
wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
wc.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
wc.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
wc.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
wc.allowedProtocols.set(WifiConfiguration.Protocol.RSN); // For WPA2
wc.allowedProtocols.set(WifiConfiguration.Protocol.WPA); // For WPA
wc.priority = 0;
//wc.hiddenSSID = true;
wc.status = WifiConfiguration.Status.ENABLED;
// connect to and enable the connection
WifiManager wifiManager = (WifiManager) getSystemService(this.WIFI_SERVICE);
int netId = wifiManager.addNetwork(wc);
boolean wifiEnabled = wifiManager.enableNetwork(netId, true);
wifiManager.setWifiEnabled(true);
Log.d("opener", "addNetwork returned " + netId);
if (netId > 0) {
wifiId = netId;
}然而，netId总是-1。我已经在两款不同的手机上试过了(ICS:HTC和姜饼:摩托罗拉DroidX)。两者的结果完全一样。我做错了什么？
编辑:我用WPA2访问点尝试了相同的代码，得到了非常奇怪的结果。当运行此代码时，它将第一次返回-1，但如果第二次调用相同的方法，延迟为1秒，它将返回有效的netId。所以问题是
- 为什么上面的代码没有连接到wpa？
- 在wpa2中，为什么需要调用上述方法两次才能连接？编辑:我观察到，我必须多次连接才能连接起来。有时连接需要3-4次。因此，现在我正在循环，直到adding返回>0id。
回答 5
Stack Overflow用户
发布于 2013-06-01 14:30:50
可能有点晚，但尝试连接到Open/WPA/WPA 2/WEP安全网络
WifiConfiguration wifiConfig = new WifiConfiguration();
wifiConfig.SSID = selectedNetwork.SSID();
wifiConfig.status = WifiConfiguration.Status.DISABLED;
wifiConfig.priority = 40;
// Dependent on the security type of the selected network
// we set the security settings for the configuration
if (/*Open network*/) {
// No security
wifiConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
wifiConfig.allowedAuthAlgorithms.clear();
wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
} else if (/*WPA*/ || /*WPA2*/) {
//WPA/WPA2 Security
wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
wifiConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP);
wifiConfig.preSharedKey = "\"".concat(password).concat("\"");
} else if (/*WEP*/) {
// WEP Security
wifiConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
wifiConfig.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
wifiConfig.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
wifiConfig.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED);
wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
wifiConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40);
wifiConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104);
if (getHexKey(password)) wifiConfig.wepKeys[0] = password;
else wifiConfig.wepKeys[0] = "\"".concat(password).concat("\"");
wifiConfig.wepTxKeyIndex = 0;
}
// Finally we add the new configuration to the managed list of networks
int networkID = wifiMan.addNetwork(wifiConfig);显然，在适用的情况下，可以为不同的安全类型设置自己的变量。连接到WEP安全网络的关键(请原谅双关语)是如下所示的getHexKey方法。
/**
* WEP has two kinds of password, a hex value that specifies the key or
* a character string used to generate the real hex. This checks what kind of
* password has been supplied. The checks correspond to WEP40, WEP104 & WEP232
* @param s
* @return
*/
private static boolean getHexKey(String s) {
if (s == null) {
return false;
}
int len = s.length();
if (len != 10 && len != 26 && len != 58) {
return false;
}
for (int i = 0; i < len; ++i) {
char c = s.charAt(i);
if ((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F')) {
continue;
}
return false;
}
return true;
}Stack Overflow用户
发布于 2013-09-21 17:48:23
我发现，如果共享密钥小于8个字符，它将返回-1。
Stack Overflow用户
发布于 2019-08-20 07:25:40
问题是，您正在尝试添加已经存在的网络配置。当你打电话：
int netId = wifiManager.addNetwork(wc);如果具有相同SSID的网络配置已经存在，它将失败(返回-1)。因此，您需要做的是检查netId是否为-1，如果为-1，则遍历配置好的网络，使用相同的SSID搜索网络，一旦找到，返回networkId。
科特林：
var netId = wifiManager.addNetwork(conf)
if (netId == -1) netId = wifiManager.configuredNetworks?.let {
it.firstOrNull { it.SSID.trim('"') == ssid.trim('"') }?.networkId ?: -1
}
wifiManager.enableNetwork(netId, true)页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/12016918
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