| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.net; |
| |
| import android.os.RemoteException; |
| |
| /** |
| * Class that answers queries about the state of network connectivity. It also |
| * notifies applications when network connectivity changes. Get an instance |
| * of this class by calling |
| * {@link android.content.Context#getSystemService(String) Context.getSystemService(Context.CONNECTIVITY_SERVICE)}. |
| * <p> |
| * The primary responsibilities of this class are to: |
| * <ol> |
| * <li>Monitor network connections (Wi-Fi, GPRS, UMTS, etc.)</li> |
| * <li>Send broadcast intents when network connectivity changes</li> |
| * <li>Attempt to "fail over" to another network when connectivity to a network |
| * is lost</li> |
| * <li>Provide an API that allows applications to query the coarse-grained or fine-grained |
| * state of the available networks</li> |
| * </ol> |
| */ |
| public class ConnectivityManager |
| { |
| /** |
| * A change in network connectivity has occurred. A 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. |
| * <p/> |
| * 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. |
| * <p/> |
| * 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 |
| * reciever 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. |
| * <p/> |
| * For a disconnect event, the boolean extra EXTRA_NO_CONNECTIVITY |
| * is set to {@code true} if there are no connected networks at all. |
| */ |
| public static final String CONNECTIVITY_ACTION = "android.net.conn.CONNECTIVITY_CHANGE"; |
| /** |
| * The lookup key for a {@link NetworkInfo} object. Retrieve with |
| * {@link android.content.Intent#getParcelableExtra(String)}. |
| */ |
| public static final String EXTRA_NETWORK_INFO = "networkInfo"; |
| /** |
| * 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 {@link android.content.Intent#getBooleanExtra(String,boolean)}. |
| */ |
| public static final String EXTRA_IS_FAILOVER = "isFailover"; |
| /** |
| * The lookup key for a {@link NetworkInfo} object. This is supplied when |
| * there is another network that it may be possible to connect to. Retrieve with |
| * {@link android.content.Intent#getParcelableExtra(String)}. |
| */ |
| public static final String EXTRA_OTHER_NETWORK_INFO = "otherNetwork"; |
| /** |
| * 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 {@link android.content.Intent#getBooleanExtra(String,boolean)}. |
| */ |
| public static final String EXTRA_NO_CONNECTIVITY = "noConnectivity"; |
| /** |
| * 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 {@link android.content.Intent#getStringExtra(String)}. |
| */ |
| public static final String EXTRA_REASON = "reason"; |
| /** |
| * 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 {@link android.content.Intent#getStringExtra(String)}. |
| */ |
| public static final String EXTRA_EXTRA_INFO = "extraInfo"; |
| |
| public static final int TYPE_MOBILE = 0; |
| public static final int TYPE_WIFI = 1; |
| |
| public static final int DEFAULT_NETWORK_PREFERENCE = TYPE_WIFI; |
| |
| private IConnectivityManager mService; |
| |
| static public boolean isNetworkTypeValid(int networkType) { |
| return networkType == TYPE_WIFI || networkType == TYPE_MOBILE; |
| } |
| |
| public void setNetworkPreference(int preference) { |
| try { |
| mService.setNetworkPreference(preference); |
| } catch (RemoteException e) { |
| } |
| } |
| |
| public int getNetworkPreference() { |
| try { |
| return mService.getNetworkPreference(); |
| } catch (RemoteException e) { |
| return -1; |
| } |
| } |
| |
| public NetworkInfo getActiveNetworkInfo() { |
| try { |
| return mService.getActiveNetworkInfo(); |
| } catch (RemoteException e) { |
| return null; |
| } |
| } |
| |
| public NetworkInfo getNetworkInfo(int networkType) { |
| try { |
| return mService.getNetworkInfo(networkType); |
| } catch (RemoteException e) { |
| return null; |
| } |
| } |
| |
| public NetworkInfo[] getAllNetworkInfo() { |
| try { |
| return mService.getAllNetworkInfo(); |
| } catch (RemoteException e) { |
| return null; |
| } |
| } |
| |
| /** {@hide} */ |
| public boolean setRadios(boolean turnOn) { |
| try { |
| return mService.setRadios(turnOn); |
| } catch (RemoteException e) { |
| return false; |
| } |
| } |
| |
| /** {@hide} */ |
| public boolean setRadio(int networkType, boolean turnOn) { |
| try { |
| return mService.setRadio(networkType, turnOn); |
| } catch (RemoteException e) { |
| return false; |
| } |
| } |
| |
| /** |
| * Tells the underlying networking system that the caller wants to |
| * begin using the named feature. The interpretation of {@code feature} |
| * is completely up to each networking implementation. |
| * @param networkType specifies which network the request pertains to |
| * @param feature the name of the feature to be used |
| * @return an integer value representing the outcome of the request. |
| * The interpretation of this value is specific to each networking |
| * implementation+feature combination, except that the value {@code -1} |
| * always indicates failure. |
| */ |
| public int startUsingNetworkFeature(int networkType, String feature) { |
| try { |
| return mService.startUsingNetworkFeature(networkType, feature); |
| } catch (RemoteException e) { |
| return -1; |
| } |
| } |
| |
| /** |
| * Tells the underlying networking system that the caller is finished |
| * using the named feature. The interpretation of {@code feature} |
| * is completely up to each networking implementation. |
| * @param networkType specifies which network the request pertains to |
| * @param feature the name of the feature that is no longer needed |
| * @return an integer value representing the outcome of the request. |
| * The interpretation of this value is specific to each networking |
| * implementation+feature combination, except that the value {@code -1} |
| * always indicates failure. |
| */ |
| public int stopUsingNetworkFeature(int networkType, String feature) { |
| try { |
| return mService.stopUsingNetworkFeature(networkType, feature); |
| } catch (RemoteException e) { |
| return -1; |
| } |
| } |
| |
| /** |
| * 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. |
| * @param networkType the type of the network over which traffic to the specified |
| * host is to be routed |
| * @param hostAddress the IP address of the host to which the route is desired |
| * @return {@code true} on success, {@code false} on failure |
| */ |
| public boolean requestRouteToHost(int networkType, int hostAddress) { |
| try { |
| return mService.requestRouteToHost(networkType, hostAddress); |
| } catch (RemoteException e) { |
| return false; |
| } |
| } |
| |
| /** |
| * Don't allow use of default constructor. |
| */ |
| @SuppressWarnings({"UnusedDeclaration"}) |
| private ConnectivityManager() { |
| } |
| |
| /** |
| * {@hide} |
| */ |
| public ConnectivityManager(IConnectivityManager service) { |
| if (service == null) { |
| throw new IllegalArgumentException( |
| "ConnectivityManager() cannot be constructed with null service"); |
| } |
| mService = service; |
| } |
| } |