WifiManager

ACTION_PICK_WIFI_NETWORK

public static final String ACTION_PICK_WIFI_NETWORK

Activity Action: Pick a Wi-Fi network to connect to.

Input: Nothing.

Output: Nothing.

Constant Value: "android.net.wifi.PICK_WIFI_NETWORK"

ACTION_REQUEST_SCAN_ALWAYS_AVAILABLE

public static final String ACTION_REQUEST_SCAN_ALWAYS_AVAILABLE

Activity Action: Show a system activity that allows the user to enable scans to be available even with Wi-Fi turned off.

Notification of the result of this activity is posted using the Activity.onActivityResult(int, int, Intent) callback. The resultCode will be Activity.RESULT_OK if scan always mode has been turned on or Activity.RESULT_CANCELED if the user has rejected the request or an error has occurred.

Constant Value: "android.net.wifi.action.REQUEST_SCAN_ALWAYS_AVAILABLE"

ERROR_AUTHENTICATING

public static final int ERROR_AUTHENTICATING

This constant was deprecated in API level 28.
This is no longer supported.

The error code if there was a problem authenticating.

Constant Value: 1 (0x00000001)

EXTRA_BSSID

public static final String EXTRA_BSSID

The lookup key for a String giving the BSSID of the access point to which we are connected. No longer used.

Constant Value: "bssid"

EXTRA_NETWORK_INFO

public static final String EXTRA_NETWORK_INFO

The lookup key for a NetworkInfo object associated with the Wi-Fi network. Retrieve with Intent.getParcelableExtra(String).

Constant Value: "networkInfo"

EXTRA_NEW_RSSI

public static final String EXTRA_NEW_RSSI

The lookup key for an int giving the new RSSI in dBm.

Constant Value: "newRssi"

EXTRA_NEW_STATE

public static final String EXTRA_NEW_STATE

This constant was deprecated in API level 28.
This is no longer supported.

The lookup key for a SupplicantState describing the new state Retrieve with Intent.getParcelableExtra(String).

Constant Value: "newState"

EXTRA_PREVIOUS_WIFI_STATE

public static final String EXTRA_PREVIOUS_WIFI_STATE

The previous Wi-Fi state.

Constant Value: "previous_wifi_state"

EXTRA_RESULTS_UPDATED

public static final String EXTRA_RESULTS_UPDATED

Lookup key for a boolean extra in intent SCAN_RESULTS_AVAILABLE_ACTION representing if the scan was successful or not. Scans may fail for multiple reasons, these may include:

1. An app requested too many scans in a certain period of time. This may lead to additional scan request rejections via "scan throttling" for both foreground and background apps. Note: Apps holding android.Manifest.permission.NETWORK_SETTINGS permission are exempted from scan throttling.
2. The device is idle and scanning is disabled.
3. Wifi hardware reported a scan failure.

Constant Value: "resultsUpdated"

EXTRA_SUPPLICANT_CONNECTED

public static final String EXTRA_SUPPLICANT_CONNECTED

This constant was deprecated in API level 28.
This is no longer supported.

The lookup key for a boolean that indicates whether a connection to the supplicant daemon has been gained or lost. true means a connection now exists. Retrieve it with Intent.getBooleanExtra(String, boolean).

Constant Value: "connected"

EXTRA_SUPPLICANT_ERROR

public static final String EXTRA_SUPPLICANT_ERROR

This constant was deprecated in API level 28.
This is no longer supported.

The lookup key for a SupplicantState describing the supplicant error code if any Retrieve with Intent.getIntExtra(String, int).

Constant Value: "supplicantError"

EXTRA_WIFI_INFO

public static final String EXTRA_WIFI_INFO

The lookup key for a WifiInfo object giving the information about the access point to which we are connected. No longer used.

Constant Value: "wifiInfo"

EXTRA_WIFI_STATE

public static final String EXTRA_WIFI_STATE

The lookup key for an int that indicates whether Wi-Fi is enabled, disabled, enabling, disabling, or unknown. Retrieve it with Intent.getIntExtra(String, int).

Constant Value: "wifi_state"

NETWORK_IDS_CHANGED_ACTION

public static final String NETWORK_IDS_CHANGED_ACTION

The network IDs of the configured networks could have changed.

Constant Value: "android.net.wifi.NETWORK_IDS_CHANGED"

NETWORK_STATE_CHANGED_ACTION

public static final String NETWORK_STATE_CHANGED_ACTION

Broadcast intent action indicating that the state of Wi-Fi connectivity has changed. An extra provides the new state in the form of a NetworkInfo object.

Constant Value: "android.net.wifi.STATE_CHANGE"

RSSI_CHANGED_ACTION

public static final String RSSI_CHANGED_ACTION

The RSSI (signal strength) has changed.

Constant Value: "android.net.wifi.RSSI_CHANGED"

SCAN_RESULTS_AVAILABLE_ACTION

public static final String SCAN_RESULTS_AVAILABLE_ACTION

An access point scan has completed, and results are available. Call getScanResults() to obtain the results. The broadcast intent may contain an extra field with the key EXTRA_RESULTS_UPDATED and a boolean value indicating if the scan was successful.

Constant Value: "android.net.wifi.SCAN_RESULTS"

SUPPLICANT_CONNECTION_CHANGE_ACTION

public static final String SUPPLICANT_CONNECTION_CHANGE_ACTION

This constant was deprecated in API level 28.
This is no longer supported.

Broadcast intent action indicating that a connection to the supplicant has been established (and it is now possible to perform Wi-Fi operations) or the connection to the supplicant has been lost. One extra provides the connection state as a boolean, where true means CONNECTED.

Constant Value: "android.net.wifi.supplicant.CONNECTION_CHANGE"

SUPPLICANT_STATE_CHANGED_ACTION

public static final String SUPPLICANT_STATE_CHANGED_ACTION

This constant was deprecated in API level 28.
This is no longer supported.

Broadcast intent action indicating that the state of establishing a connection to an access point has changed.One extra provides the new SupplicantState. Note that the supplicant state is Wi-Fi specific, and is not generally the most useful thing to look at if you are just interested in the overall state of connectivity.

Constant Value: "android.net.wifi.supplicant.STATE_CHANGE"

WIFI_MODE_FULL

public static final int WIFI_MODE_FULL

In this Wi-Fi lock mode, Wi-Fi will be kept active, and will behave normally, i.e., it will attempt to automatically establish a connection to a remembered access point that is within range, and will do periodic scans if there are remembered access points but none are in range.

Constant Value: 1 (0x00000001)

WIFI_MODE_FULL_HIGH_PERF

public static final int WIFI_MODE_FULL_HIGH_PERF

In this Wi-Fi lock mode, Wi-Fi will be kept active as in mode WIFI_MODE_FULL but it operates at high performance with minimum packet loss and low packet latency even when the device screen is off. This mode will consume more power and hence should be used only when there is a need for such an active connection.

An example use case is when a voice connection needs to be kept active even after the device screen goes off. Holding the regular WIFI_MODE_FULL lock will keep the wifi connection active, but the connection can be lossy. Holding a WIFI_MODE_FULL_HIGH_PERF lock for the duration of the voice call will improve the call quality.

When there is no support from the hardware, this lock mode will have the same behavior as WIFI_MODE_FULL

Constant Value: 3 (0x00000003)

WIFI_MODE_SCAN_ONLY

public static final int WIFI_MODE_SCAN_ONLY

In this Wi-Fi lock mode, Wi-Fi will be kept active, but the only operation that will be supported is initiation of scans, and the subsequent reporting of scan results. No attempts will be made to automatically connect to remembered access points, nor will periodic scans be automatically performed looking for remembered access points. Scans must be explicitly requested by an application in this mode.

Constant Value: 2 (0x00000002)

WIFI_STATE_CHANGED_ACTION

public static final String WIFI_STATE_CHANGED_ACTION

Broadcast intent action indicating that Wi-Fi has been enabled, disabled, enabling, disabling, or unknown. One extra provides this state as an int. Another extra provides the previous state, if available.

Constant Value: "android.net.wifi.WIFI_STATE_CHANGED"

WIFI_STATE_DISABLED

public static final int WIFI_STATE_DISABLED

Wi-Fi is disabled.

Constant Value: 1 (0x00000001)

WIFI_STATE_DISABLING

public static final int WIFI_STATE_DISABLING

Wi-Fi is currently being disabled. The state will change to WIFI_STATE_DISABLED if it finishes successfully.

Constant Value: 0 (0x00000000)

WIFI_STATE_ENABLED

public static final int WIFI_STATE_ENABLED

Wi-Fi is enabled.

Constant Value: 3 (0x00000003)

WIFI_STATE_ENABLING

public static final int WIFI_STATE_ENABLING

Wi-Fi is currently being enabled. The state will change to WIFI_STATE_ENABLED if it finishes successfully.

Constant Value: 2 (0x00000002)

WIFI_STATE_UNKNOWN

public static final int WIFI_STATE_UNKNOWN

Wi-Fi is in an unknown state. This state will occur when an error happens while enabling or disabling.

Constant Value: 4 (0x00000004)

WPS_AUTH_FAILURE

public static final int WPS_AUTH_FAILURE

This constant was deprecated in API level 28.
This is deprecated

Authentication failure on WPS

Constant Value: 6 (0x00000006)

WPS_OVERLAP_ERROR

public static final int WPS_OVERLAP_ERROR

This constant was deprecated in API level 28.
This is deprecated

WPS overlap detected

Constant Value: 3 (0x00000003)

WPS_TIMED_OUT

public static final int WPS_TIMED_OUT

This constant was deprecated in API level 28.
This is deprecated

WPS timed out

Constant Value: 7 (0x00000007)

WPS_TKIP_ONLY_PROHIBITED

public static final int WPS_TKIP_ONLY_PROHIBITED

This constant was deprecated in API level 28.
This is deprecated

TKIP only prohibited

Constant Value: 5 (0x00000005)

WPS_WEP_PROHIBITED

public static final int WPS_WEP_PROHIBITED

This constant was deprecated in API level 28.
This is deprecated

WEP on WPS is prohibited

Constant Value: 4 (0x00000004)

addNetwork

public int addNetwork (WifiConfiguration config)

Add a new network description to the set of configured networks. The networkId field of the supplied configuration object is ignored.

The new network will be marked DISABLED by default. To enable it, called enableNetwork(int, boolean).

addOrUpdatePasspointConfiguration

public void addOrUpdatePasspointConfiguration (PasspointConfiguration config)

Add or update a Passpoint configuration. The configuration provides a credential for connecting to Passpoint networks that are operated by the Passpoint service provider specified in the configuration. Each configuration is uniquely identified by its FQDN (Fully Qualified Domain Name). In the case when there is an existing configuration with the same FQDN, the new configuration will replace the existing configuration.

calculateSignalLevel

public static int calculateSignalLevel (int rssi, 
                int numLevels)

Calculates the level of the signal. This should be used any time a signal is being shown.

cancelWps

public void cancelWps (WifiManager.WpsCallback listener)

This method was deprecated in API level 28.
This API is deprecated

WPS support has been deprecated from Client mode and this method will immediately trigger WifiManager.WpsCallback.onFailed(int) with a generic error.

compareSignalLevel

public static int compareSignalLevel (int rssiA, 
                int rssiB)

Compares two signal strengths.

createMulticastLock

public WifiManager.MulticastLock createMulticastLock (String tag)

Create a new MulticastLock

createWifiLock

public WifiManager.WifiLock createWifiLock (String tag)

Creates a new WifiLock.

createWifiLock

public WifiManager.WifiLock createWifiLock (int lockType, 
                String tag)

Creates a new WifiLock.

disableNetwork

public boolean disableNetwork (int netId)

Disable a configured network. The specified network will not be a candidate for associating. This may result in the asynchronous delivery of state change events. Applications are not allowed to disable networks created by other applications.

disconnect

public boolean disconnect ()

Disassociate from the currently active access point. This may result in the asynchronous delivery of state change events.

enableNetwork

public boolean enableNetwork (int netId, 
                boolean attemptConnect)

Allow a previously configured network to be associated with. If attemptConnect is true, an attempt to connect to the selected network is initiated. This may result in the asynchronous delivery of state change events.

Note: If an application's target SDK version is Build.VERSION_CODES.LOLLIPOP or newer, network communication may not use Wi-Fi even if Wi-Fi is connected; traffic may instead be sent through another network, such as cellular data, Bluetooth tethering, or Ethernet. For example, traffic will never use a Wi-Fi network that does not provide Internet access (e.g. a wireless printer), if another network that does offer Internet access (e.g. cellular data) is available. Applications that need to ensure that their network traffic uses Wi-Fi should use APIs such as Network.bindSocket(java.net.Socket), Network.openConnection(java.net.URL), or ConnectivityManager.bindProcessToNetwork(Network) to do so. Applications are not allowed to enable networks created by other applications.

getConfiguredNetworks

public List<WifiConfiguration> getConfiguredNetworks ()

Return a list of all the networks configured for the current foreground user. Not all fields of WifiConfiguration are returned. Only the following fields are filled in:

• networkId
• SSID
• BSSID
• priority
• allowedProtocols
• allowedKeyManagement
• allowedAuthAlgorithms
• allowedPairwiseCiphers
• allowedGroupCiphers

getConnectionInfo

public WifiInfo getConnectionInfo ()

Return dynamic information about the current Wi-Fi connection, if any is active.

In the connected state, access to the SSID and BSSID requires the same permissions as getScanResults(). If such access is not allowed, WifiInfo.getSSID() will return "<unknown ssid>" and WifiInfo.getBSSID() will return "02:00:00:00:00:00".

getDhcpInfo

public DhcpInfo getDhcpInfo ()

Return the DHCP-assigned addresses from the last successful DHCP request, if any.

getPasspointConfigurations

public List<PasspointConfiguration> getPasspointConfigurations ()

Return the list of installed Passpoint configurations. An empty list will be returned when no configurations are installed.

getScanResults

public List<ScanResult> getScanResults ()

Return the results of the latest access point scan.

getWifiState

public int getWifiState ()

Gets the Wi-Fi enabled state.

is5GHzBandSupported

public boolean is5GHzBandSupported ()

isDeviceToApRttSupported

public boolean isDeviceToApRttSupported ()

isEnhancedPowerReportingSupported

public boolean isEnhancedPowerReportingSupported ()

isP2pSupported

public boolean isP2pSupported ()

isPreferredNetworkOffloadSupported

public boolean isPreferredNetworkOffloadSupported ()

isScanAlwaysAvailable

public boolean isScanAlwaysAvailable ()

Check if scanning is always available. If this return true, apps can issue startScan() and fetch scan results even when Wi-Fi is turned off. To change this setting, see ACTION_REQUEST_SCAN_ALWAYS_AVAILABLE.

isTdlsSupported

public boolean isTdlsSupported ()

isWifiEnabled

public boolean isWifiEnabled ()

Return whether Wi-Fi is enabled or disabled.

pingSupplicant

public boolean pingSupplicant ()

This method was deprecated in API level 26.
Will return the output of isWifiEnabled() instead.

Check that the supplicant daemon is responding to requests.

reassociate

public boolean reassociate ()

Reconnect to the currently active access point, even if we are already connected. This may result in the asynchronous delivery of state change events.

reconnect

public boolean reconnect ()

Reconnect to the currently active access point, if we are currently disconnected. This may result in the asynchronous delivery of state change events.

removeNetwork

public boolean removeNetwork (int netId)

Remove the specified network from the list of configured networks. This may result in the asynchronous delivery of state change events. Applications are not allowed to remove networks created by other applications.

removePasspointConfiguration

public void removePasspointConfiguration (String fqdn)

Remove the Passpoint configuration identified by its FQDN (Fully Qualified Domain Name).

saveConfiguration

public boolean saveConfiguration ()

This method was deprecated in API level 26.
There is no need to call this method - addNetwork(WifiConfiguration), updateNetwork(WifiConfiguration) and removeNetwork(int) already persist the configurations automatically.

Tell the device to persist the current list of configured networks.

Note: It is possible for this method to change the network IDs of existing networks. You should assume the network IDs can be different after calling this method.

setTdlsEnabled

public void setTdlsEnabled (InetAddress remoteIPAddress, 
                boolean enable)

Enable/Disable TDLS on a specific local route.

TDLS enables two wireless endpoints to talk to each other directly without going through the access point that is managing the local network. It saves bandwidth and improves quality of the link.

This API enables/disables the option of using TDLS. If enabled, the underlying hardware is free to use TDLS or a hop through the access point. If disabled, existing TDLS session is torn down and hardware is restricted to use access point for transferring wireless packets. Default value for all routes is 'disabled', meaning restricted to use access point for transferring packets.

setTdlsEnabledWithMacAddress

public void setTdlsEnabledWithMacAddress (String remoteMacAddress, 
                boolean enable)

Similar to setTdlsEnabled(InetAddress, boolean), except this version allows you to specify remote endpoint with a MAC address.

setWifiEnabled

public boolean setWifiEnabled (boolean enabled)

Enable or disable Wi-Fi.

Applications must have the Manifest.permission.CHANGE_WIFI_STATE permission to toggle wifi.

startLocalOnlyHotspot

public void startLocalOnlyHotspot (WifiManager.LocalOnlyHotspotCallback callback, 
                Handler handler)

Request a local only hotspot that an application can use to communicate between co-located devices connected to the created WiFi hotspot. The network created by this method will not have Internet access. Each application can make a single request for the hotspot, but multiple applications could be requesting the hotspot at the same time. When multiple applications have successfully registered concurrently, they will be sharing the underlying hotspot. WifiManager.LocalOnlyHotspotCallback.onStarted(LocalOnlyHotspotReservation) is called when the hotspot is ready for use by the application.

Each application can make a single active call to this method. The WifiManager.LocalOnlyHotspotCallback.onStarted(LocalOnlyHotspotReservation) callback supplies the requestor with a WifiManager.LocalOnlyHotspotReservation that contains a WifiConfiguration with the SSID, security type and credentials needed to connect to the hotspot. Communicating this information is up to the application.

If the LocalOnlyHotspot cannot be created, the WifiManager.LocalOnlyHotspotCallback.onFailed(int) method will be called. Example failures include errors bringing up the network or if there is an incompatible operating mode. For example, if the user is currently using Wifi Tethering to provide an upstream to another device, LocalOnlyHotspot will not start due to an incompatible mode. The possible error codes include: WifiManager.LocalOnlyHotspotCallback.ERROR_NO_CHANNEL, WifiManager.LocalOnlyHotspotCallback.ERROR_GENERIC, WifiManager.LocalOnlyHotspotCallback.ERROR_INCOMPATIBLE_MODE and WifiManager.LocalOnlyHotspotCallback.ERROR_TETHERING_DISALLOWED.

Internally, requests will be tracked to prevent the hotspot from being torn down while apps are still using it. The WifiManager.LocalOnlyHotspotReservation object passed in the WifiManager.LocalOnlyHotspotCallback.onStarted(LocalOnlyHotspotReservation) call should be closed when the LocalOnlyHotspot is no longer needed using WifiManager.LocalOnlyHotspotReservation.close(). Since the hotspot may be shared among multiple applications, removing the final registered application request will trigger the hotspot teardown. This means that applications should not listen to broadcasts containing wifi state to determine if the hotspot was stopped after they are done using it. Additionally, once WifiManager.LocalOnlyHotspotReservation.close() is called, applications will not receive callbacks of any kind.

Applications should be aware that the user may also stop the LocalOnlyHotspot through the Settings UI; it is not guaranteed to stay up as long as there is a requesting application. The requestors will be notified of this case via WifiManager.LocalOnlyHotspotCallback.onStopped(). Other cases may arise where the hotspot is torn down (Emergency mode, etc). Application developers should be aware that it can stop unexpectedly, but they will receive a notification if they have properly registered.

Applications should also be aware that this network will be shared with other applications. Applications are responsible for protecting their data on this network (e.g., TLS).

Applications need to have the following permissions to start LocalOnlyHotspot: Manifest.permission.CHANGE_WIFI_STATE and ACCESS_COARSE_LOCATION. Callers without the permissions will trigger a SecurityException.

startScan

public boolean startScan ()

This method was deprecated in API level 28.
The ability for apps to trigger scan requests will be removed in a future release.

Request a scan for access points. Returns immediately. The availability of the results is made known later by means of an asynchronous event sent on completion of the scan.

To initiate a Wi-Fi scan, declare the Manifest.permission.CHANGE_WIFI_STATE permission in the manifest, and perform these steps:

1. Invoke the following method: ((WifiManager) getSystemService(WIFI_SERVICE)).startScan()
2. Register a BroadcastReceiver to listen to SCAN_RESULTS_AVAILABLE_ACTION.
3. When a broadcast is received, call: ((WifiManager) getSystemService(WIFI_SERVICE)).getScanResults()

startWps

public void startWps (WpsInfo config, 
                WifiManager.WpsCallback listener)

This method was deprecated in API level 28.
This API is deprecated

WPS suport has been deprecated from Client mode and this method will immediately trigger WifiManager.WpsCallback.onFailed(int) with a generic error.

updateNetwork

public int updateNetwork (WifiConfiguration config)

Update the network description of an existing configured network.

finalize

protected void finalize ()

Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. A subclass overrides the finalize method to dispose of system resources or to perform other cleanup.

The general contract of finalize is that it is invoked if and when the Java™ virtual machine has determined that there is no longer any means by which this object can be accessed by any thread that has not yet died, except as a result of an action taken by the finalization of some other object or class which is ready to be finalized. The finalize method may take any action, including making this object available again to other threads; the usual purpose of finalize, however, is to perform cleanup actions before the object is irrevocably discarded. For example, the finalize method for an object that represents an input/output connection might perform explicit I/O transactions to break the connection before the object is permanently discarded.

The finalize method of class Object performs no special action; it simply returns normally. Subclasses of Object may override this definition.

The Java programming language does not guarantee which thread will invoke the finalize method for any given object. It is guaranteed, however, that the thread that invokes finalize will not be holding any user-visible synchronization locks when finalize is invoked. If an uncaught exception is thrown by the finalize method, the exception is ignored and finalization of that object terminates.

After the finalize method has been invoked for an object, no further action is taken until the Java virtual machine has again determined that there is no longer any means by which this object can be accessed by any thread that has not yet died, including possible actions by other objects or classes which are ready to be finalized, at which point the object may be discarded.

The finalize method is never invoked more than once by a Java virtual machine for any given object.

Any exception thrown by the finalize method causes the finalization of this object to be halted, but is otherwise ignored.