ConnectivityManager

Broadcast Action: The setting for background data usage has changed values. Use getBackgroundDataSetting() to get the current value.

If an application uses the network in the background, it should listen for this broadcast and stop using the background data if the value is false.

A change in network connectivity has occurred. A default connection has either been established or lost. The NetworkInfo for the affected network is sent as an extra; it should be consulted to see what kind of connectivity event occurred.

If this is a connection that was the result of failing over from a disconnected network, then the FAILOVER_CONNECTION boolean extra is set to true.

For a loss of connectivity, if the connectivity manager is attempting to connect (or has already connected) to another network, the NetworkInfo for the new network is also passed as an extra. This lets any receivers of the broadcast know that they should not necessarily tell the user that no data traffic will be possible. Instead, the receiver should expect another broadcast soon, indicating either that the failover attempt succeeded (and so there is still overall data connectivity), or that the failover attempt failed, meaning that all connectivity has been lost.

For a disconnect event, the boolean extra EXTRA_NO_CONNECTIVITY is set to true if there are no connected networks at all.

If you want to set the default network preference,you can directly change the networkAttributes array in framework's config.xml.

The lookup key for a string that provides optionally supplied extra information about the network state. The information may be passed up from the lower networking layers, and its meaning may be specific to a particular network type. Retrieve it with getStringExtra(String).

The lookup key for a boolean that indicates whether a connect event is for a network to which the connectivity manager was failing over following a disconnect on another network. Retrieve it with getBooleanExtra(String, boolean).

The lookup key for a NetworkInfo object. Retrieve with getParcelableExtra(String).

Network type which triggered a CONNECTIVITY_ACTION broadcast. Can be used with getNetworkInfo(int) to get NetworkInfo state based on the calling application.

The lookup key for a boolean that indicates whether there is a complete lack of connectivity, i.e., no network is available. Retrieve it with getBooleanExtra(String, boolean).

The lookup key for a NetworkInfo object. This is supplied when there is another network that it may be possible to connect to. Retrieve with getParcelableExtra(String).

The lookup key for a string that indicates why an attempt to connect to a network failed. The string has no particular structure. It is intended to be used in notifications presented to users. Retrieve it with getStringExtra(String).

The Bluetooth data connection. When active, all data traffic will use this network type's interface by default (it has a default route).

Dummy data connection. This should not be used on shipping devices.

The Ethernet data connection. When active, all data traffic will use this network type's interface by default (it has a default route).

The Mobile data connection. When active, all data traffic will use this network type's interface by default (it has a default route)

A DUN-specific Mobile data connection. This network type may use the same network interface as TYPE_MOBILE or it may use a different one. This is sometimes by the system when setting up an upstream connection for tethering so that the carrier is aware of DUN traffic.

A High Priority Mobile data connection. This network type uses the same network interface as TYPE_MOBILE but the routing setup is different. Only requesting processes will have access to the Mobile DNS servers and only IP's explicitly requested via requestRouteToHost(int, int) will route over this interface if no default route exists.

An MMS-specific Mobile data connection. This network type may use the same network interface as TYPE_MOBILE or it may use a different one. This is used by applications needing to talk to the carrier's Multimedia Messaging Service servers.

A SUPL-specific Mobile data connection. This network type may use the same network interface as TYPE_MOBILE or it may use a different one. This is used by applications needing to talk to the carrier's Secure User Plane Location servers for help locating the device.

A virtual network using one or more native bearers. It may or may not be providing security services.

The WIFI data connection. When active, all data traffic will use this network type's interface by default (it has a default route).

The WiMAX data connection. When active, all data traffic will use this network type's interface by default (it has a default route).

Start listening to reports when the system's default data network is active, meaning it is a good time to perform network traffic. Use isDefaultNetworkActive() to determine the current state of the system's default network after registering the listener.

If the process default network has been set with setProcessDefaultNetwork(Network) this function will not reflect the process's default, but the system default.

Returns details about the currently active default data network. When connected, this network is the default route for outgoing connections. You should always check isConnected() before initiating network traffic. This may return null when there is no default network.

Returns connection status information about all network types supported by the device.

Returns an array of all Network currently tracked by the framework.

Returns the value of the setting for background data usage. If false, applications should not use the network if the application is not in the foreground. Developers should respect this setting, and check the value of this before performing any background data operations.

All applications that have background services that use the network should listen to ACTION_BACKGROUND_DATA_SETTING_CHANGED.

Get the LinkProperties for the given Network. This will return null if the network is unknown.

Get the NetworkCapabilities for the given Network. This will return null if the network is unknown.

Returns connection status information about a particular Network.

Returns connection status information about a particular network type.

Retrieves the current preferred network type.

Returns the Network currently bound to this process via setProcessDefaultNetwork(Network), or null if no Network is explicitly bound.

Returns if the currently active data network is metered. A network is classified as metered when the user is sensitive to heavy data usage on that connection due to monetary costs, data limitations or battery/performance issues. You should check this before doing large data transfers, and warn the user or delay the operation until another network is available.

Return whether the data network is currently active. An active network means that it is currently in a high power state for performing data transmission. On some types of networks, it may be expensive to move and stay in such a state, so it is more power efficient to batch network traffic together when the radio is already in this state. This method tells you whether right now is currently a good time to initiate network traffic, as the network is already active.

Tests if a given integer represents a valid network type.

Registers to receive notifications about all networks which satisfy the given NetworkRequest. The callbacks will continue to be called until either the application exits or unregisterNetworkCallback(ConnectivityManager.NetworkCallback) is called

Remove network active listener previously registered with addDefaultNetworkActiveListener(ConnectivityManager.OnNetworkActiveListener).

Report a problem network to the framework. This provides a hint to the system that there might be connectivity problems on this network and may cause the framework to re-evaluate network connectivity and/or switch to another network.

Request a network to satisfy a set of NetworkCapabilities. This NetworkRequest will live until released via unregisterNetworkCallback(ConnectivityManager.NetworkCallback) or the calling application exits. Status of the request can be followed by listening to the various callbacks described in ConnectivityManager.NetworkCallback. The Network can be used to direct traffic to the network.

Ensure that a network route exists to deliver traffic to the specified host via the specified network interface. An attempt to add a route that already exists is ignored, but treated as successful.

This method requires the caller to hold the permission CHANGE_NETWORK_STATE.

Specifies the preferred network type. When the device has more than one type available the preferred network type will be used.

Binds the current process to network. All Sockets created in the future (and not explicitly bound via a bound SocketFactory from Network.getSocketFactory()) will be bound to network. All host name resolutions will be limited to network as well. Note that if network ever disconnects, all Sockets created in this way will cease to work and all host name resolutions will fail. This is by design so an application doesn't accidentally use Sockets it thinks are still bound to a particular Network. To clear binding pass null for network. Using individually bound Sockets created by Network.getSocketFactory().createSocket() and performing network-specific host name resolutions via Network.getAllByName is preferred to calling setProcessDefaultNetwork.

Tells the underlying networking system that the caller wants to begin using the named feature. The interpretation of feature is completely up to each networking implementation.

This method requires the caller to hold the permission CHANGE_NETWORK_STATE.

Tells the underlying networking system that the caller is finished using the named feature. The interpretation of feature is completely up to each networking implementation.

This method requires the caller to hold the permission CHANGE_NETWORK_STATE.

Unregisters callbacks about and possibly releases networks originating from requestNetwork(NetworkRequest, ConnectivityManager.NetworkCallback) and registerNetworkCallback(NetworkRequest, ConnectivityManager.NetworkCallback) calls. If the given NetworkCallback had previosuly been used with #requestNetwork, any networks that had been connected to only to satisfy that request will be disconnected.