I can use the following code to get the name of Wifi, I hope to select WiFi programatically, how can I do?
It seems that wifiInfo.ssid is val , and it can't be assigned!
I set the required permission as
<!-- in AndroidManifest.xml -->
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
Then in the code
<!-- in Activity class -->
var wifiManager = mContext.applicationContext.getSystemService(WIFI_SERVICE) as WifiManager
var wifiInfo = wifiManager.connectionInfo
var name=wifiInfo.ssid
var isEnabled=wifiManager.isWifiEnabled
wifiInfo.ssid="MyNewWifi" //It cause error
BTW,
I have read the artical
How do I connect to a specific Wi-Fi network in Android programmatically?
It seems that I need to provide passsword in the above code when I reconnect the WIFI again.
In my mind, the password will be saved to configuration if I have connected to the wifi successfully, I hope that I needn't provide password in my code if I want to reconnect the WiFi again, how can I do?
You need to create a Wifi configuration like this.
String networkSSID = "testwifi";
String networkPass = "password";
WifiConfiguration conf = new WifiConfiguration();
conf.SSID = "\"" + networkSSID + "\"";
conf.preSharedKey = "\""+ networkPass +"\"";
WifiManager wifiManager =
(WifiManager)context.getSystemService(Context.WIFI_SERVICE);
wifiManager.addNetwork(conf);
List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
for( WifiConfiguration i : list ) {
if(i.SSID != null && i.SSID.equals("\"" + networkSSID + "\"")) {
wifiManager.disconnect();
wifiManager.enableNetwork(i.networkId, true);
wifiManager.reconnect();
break;
}
}
This code should work for WPA security settings.
Reference:
Another similar question link
Related
i am facing a problem with wifi if the ap has same ssid and password i am getting BSSID as null or any from getconfiguredNetwork() method. so, i want to add network manually into wifi configuration but this add,remove and update will not work from api levl 26. is there any other alternative way to solve this solution. Reference Link.
WifiConfiguration conf = new WifiConfiguration();
conf.SSID = "\"" + networkSSID + "\"";
conf.BSSID = Bssid;
conf.preSharedKey = "\"" + networkPasskey + "\"";
WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
wifiManager.addNetwork(conf);
List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
for (WifiConfiguration i : list) {
if (i.BSSID != null && i.BSSID.equals(Bssid)) {
wifiManager.disconnect();
wifiManager.enableNetwork(i.networkId, true);
wifiManager.reassociate();
Log.d("changing network", "connecting the right network");
break;
}
}
You will require location permissions, starting with Android 8.1 and 9 Google changed how you can access WiFi info.
https://developer.android.com/about/versions/pie/android-9.0-changes-all#restricted_access_to_wi-fi_location_and_connection_information
You will need ACCESS_FINE_LOCATION or ACCESS_COARSE_LOCATION permissions as well as rely on the user having their location service enabled. This cannot be done any other way because of privacy issues relating to WiFi.
I just started an app that must connect automatically to an open access point called "DEVICE AP".
I'm already getting a list with wifi networks, but I don't get "DEVICE AP" until I try the scan for three times (more or less).
So, my questions is: How can I scan continuously until I find "DEVICE AP"?
And other one, is it correct to connect to my open network by this way:
private void connectDeviceAccessPoint() {
String networkSSID = "DEVICE AP";
WifiConfiguration wifiConfig = new WifiConfiguration();
wifiConfig.SSID = "\"" + networkSSID + "\"";
wifiConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
wifiManager.addNetwork(wifiConfig);
List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
for( WifiConfiguration i : list ) {
if(i.SSID != null && i.SSID.equals("\"" + networkSSID + "\"")) {
wifiManager.disconnect();
wifiManager.enableNetwork(i.networkId, true);
wifiManager.reconnect();
//Start service to send messages to device.
startService(new Intent(WifiActivity.this, SocketService.class));
doBindService();
break;
}
}
}
Thanks in advance!
Using Xamarin.iOS and Xamarin.Android, it is possible to check if the Wi-Fi is enabled?
And, if is disabled, it's possible to enable it?
Once it's enabled, how to search and connect to a network?
Enable/Disable Wifi:
WifiManager wifiManager = (WifiManager)GetSystemService(WifiService);
if (!wifiManager.IsWifiEnabled)
wifiManager.SetWifiEnabled(true);
else
wifiManager.SetWifiEnabled(false);
Permission to change Wifi state:
android.permission.CHANGE_WIFI_STATE
Add a network:
var networkSSID = "Stack";
var networkPass = "Overflow";
var config = new WifiConfiguration();
config.Ssid = '"' + networkSSID + '"';
// For WPA/WPA2, WEP is different (still using WEP? shame on you ;-)
config.PreSharedKey = '"' + networkPass + '"';
wifiManager.AddNetwork(config);
Connect to a network:
IList<WifiConfiguration> myWifi = wifiManager.ConfiguredNetworks;
wifiManager.Disconnect();
wifiManager.EnableNetwork(myWifi.FindFirst(x => x.Ssid.Contains(networkSSID)), true);
wifiManager.Reconnect();
I'm going to create xposed module that will add one option to the window which appears when user clicks/holds one of WiFi networks. The dialog box where are located options like "connect", "modify", "cancel".
Where do I find these methods?
public void connectTowifi()
{
String ssid = ""// ssid of clicked network
String pass = "" // pass of clicked network
WifiConfiguration wifiConfig = new WifiConfiguration();
wifiConfig.SSID = "\"" ssid +"\"";
wifiConfig.preSharedKey = "\"" + OfflineUtils.generatePassword(ssid) + "\"";
wifiManager.addNetwork(wifiConfig);
List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
for( WifiConfiguration wifiConfiguration : list )
{
if(wifiConfiguration!=null && wifiConfiguration.SSID != null && wifiConfiguration.SSID.equals(wifiConfig.SSID))
{
wifiManager.disconnect();
wifiManager.enableNetwork(wifiConfiguration.networkId, true);
wifiManager.reconnect();
}
}
}
Similarly for diabling network use
http://developer.android.com/reference/android/net/wifi/WifiManager.html#disableNetwork(int)
for forgetiing network
http://developer.android.com/reference/android/net/wifi/WifiManager.html#removeNetwork(int)
for disconnect connection:
http://developer.android.com/reference/android/net/wifi/WifiManager.html#disconnect()
For updating netwrok
http://developer.android.com/reference/android/net/wifi/WifiManager.html#updateNetwork(android.net.wifi.WifiConfiguration)
For all other methods
refer to
http://developer.android.com/reference/android/net/wifi/WifiManager.html
In my application I ask user to select WiFi network and to enter password (if needed). How can I check if password is correct?
Here is my code for connecting to WPA networks
conf = new WifiConfiguration();
conf.SSID = "\"" + networkSSID + "\"";
networkPass = input.getText().toString();
conf.preSharedKey = "\""+ networkPass +"\"";
WifiManager wifiManager = (WifiManager)getSystemService(Context.WIFI_SERVICE);
wifiManager.addNetwork(conf);
List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
if (list.size()>0)
{
for (WifiConfiguration i : list ) {
if(i.SSID != null && i.SSID.equals("\"" + networkSSID + "\"")) {
wifiManager.disconnect();
wifiManager.enableNetwork(i.networkId, true);
wifiManager.reconnect();
break;
}
}
}
two option:
1) Use BroadcastReceiver like this.You receive an intent after your success connected. But you will not get one if the password is incorrect. So my suggestion is :
2) check it out later(like after 2s) use the Handler. Because associating and connecting to a WiFi network takes time and the actual task of connecting or associating with the network is done asynchronously in the background. So just check it out later( 1s is too short and 2 second is work for me. You might try other number).