为什么在安卓(棒棒糖版本)上设置的Wifi网络在路由器重置后不会自动重新连接?网络是这样设置的:
private boolean connectToNetwork(ScanResult scanResult, String password, WifiManager wifiManager)
{
WifiConfiguration wifiConfig = new WifiConfiguration();
String quotedSSID = "\"" + scanResult.SSID + "\"";
wifiConfig.SSID = quotedSSID;
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
SecurityType securityType = getSecurityType(scanResult);
if (securityType == SecurityType.Open)
{
// 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 (securityType == SecurityType.WPA)
{
//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 (securityType == SecurityType.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
connectionReceiver = new ConnectionReceiver();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(WifiManager.SUPPLICANT_STATE_CHANGED_ACTION);
intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
registerReceiver(connectionReceiver, intentFilter);
int networkID = wifiManager.addNetwork(wifiConfig);
if (networkID != -1)
{
if(wifiManager.enableNetwork(networkID, true))
{
wifiManager.saveConfiguration();
return true;
}
}
// Connection failed
unregisterReceiver(connectionReceiver);
connectionReceiver = null;
return false;
}
这段代码可以正常工作并连接到网络。在关闭Wifi路由器之前,网络将继续正常工作。然后,在重新打开它并等待设备重新连接后,我会遇到错误,并且无法访问互联网。以下代码返回true,因此看起来设备已重新连接到网络:
public boolean isNetworkAvailable()
{
ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
return activeNetworkInfo != null && activeNetworkInfo.isConnected();
}
以上活动网络是正确的Wifi网络,但在尝试访问任何内容时,我会遇到错误。例如,Chromium会给出一堆:
E/chromium: [ERROR:socket_posix.cc(80)] CreatePlatformSocket() returned an error, errno=64: Machine is not on the network
W/chromium: [WARNING:net_errors_posix.cc(116)] Unknown error 64 mapped to net::ERR_FAILED
并且Volley提供了相同的功能:
java.net.SocketException: socket failed: errno 64 (Machine is not on the network)
connMgr.setProcessDefaultNetwork(null);
。感谢这篇文章:https://dev59.com/IFkS5IYBdhLWcg3wCSdx - Pierre