| /* |
| * Copyright (C) 2011 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.wifi.p2p; |
| |
| import android.annotation.SdkConstant; |
| import android.annotation.SdkConstant.SdkConstantType; |
| import android.content.Context; |
| import android.net.ConnectivityManager; |
| import android.net.IConnectivityManager; |
| import android.os.Binder; |
| import android.os.IBinder; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.WorkSource; |
| import android.os.Messenger; |
| import android.util.Log; |
| |
| import com.android.internal.util.AsyncChannel; |
| import com.android.internal.util.Protocol; |
| |
| import java.util.HashMap; |
| |
| /** |
| * This class provides the API for managing Wi-Fi peer-to-peer connectivity. This lets an |
| * application discover available peers, setup connection to peers and query for the list of peers. |
| * When a p2p connection is formed over wifi, the device continues to maintain the uplink |
| * connection over mobile or any other available network for internet connectivity on the device. |
| * |
| * <p> The API is asynchronous and responses to requests from an application are on listener |
| * callbacks provided by the application. The application needs to do an initialization with |
| * {@link #initialize} before doing any p2p operation. |
| * |
| * <p> Application actions {@link #discoverPeers}, {@link #connect}, {@link #cancelConnect}, |
| * {@link #createGroup} and {@link #removeGroup} need a {@link ActionListener} instance for |
| * receiving callbacks {@link ActionListener#onSuccess} or {@link ActionListener#onFailure}. |
| * Action callbacks indicate whether the initiation of the action was a success or a failure. |
| * Upon failure, the reason of failure can be one of {@link #ERROR}, {@link #P2P_UNSUPPORTED} |
| * or {@link #BUSY}. |
| * |
| * <p> An application can initiate discovery of peers with {@link #discoverPeers}. An initiated |
| * discovery request from an application stays active until the device starts connecting to a peer |
| * or forms a p2p group. The {@link ActionListener} callbacks provide feedback on whether the |
| * discovery initiation was successful or failure. Additionally, applications can listen |
| * to {@link #WIFI_P2P_PEERS_CHANGED_ACTION} intent action to know when the peer list changes. |
| * |
| * <p> When the peer list change intent {@link #WIFI_P2P_PEERS_CHANGED_ACTION} is received |
| * or when an application needs to fetch the current list of peers, it can request the list |
| * of peers with {@link #requestPeers}. When the peer list is available |
| * {@link PeerListListener#onPeersAvailable} is called with the device list. |
| * |
| * <p> An application can initiate a connection request to a peer through {@link #connect}. See |
| * {@link WifiP2pConfig} for details on setting up the configuration. For communication with legacy |
| * Wi-Fi devices that do not support p2p, an app can create a group using {@link #createGroup} |
| * which creates an access point whose details can be fetched with {@link #requestGroupInfo}. |
| * |
| * <p> After a successful group formation through {@link #createGroup} or through {@link #connect}, |
| * use {@link #requestConnectionInfo} to fetch the connection details. The connection info |
| * {@link WifiP2pInfo} contains the address of the group owner |
| * {@link WifiP2pInfo#groupOwnerAddress} and a flag {@link WifiP2pInfo#isGroupOwner} to indicate |
| * if the current device is a p2p group owner. A p2p client can thus communicate with |
| * the p2p group owner through a socket connection. |
| * |
| * <p> Android has no platform support for service discovery yet, so applications could |
| * run a service discovery protocol to discover services on the peer-to-peer netework. |
| * |
| * <p class="note"><strong>Note:</strong> |
| * Registering an application handler with {@link #initialize} requires the permissions |
| * {@link android.Manifest.permission#ACCESS_WIFI_STATE} and |
| * {@link android.Manifest.permission#CHANGE_WIFI_STATE} to perform any further peer-to-peer |
| * operations. |
| * |
| * Get an instance of this class by calling {@link android.content.Context#getSystemService(String) |
| * Context.getSystemService(Context.WIFI_P2P_SERVICE)}. |
| * |
| * {@see WifiP2pConfig} |
| * {@see WifiP2pInfo} |
| * {@see WifiP2pGroup} |
| * {@see WifiP2pDevice} |
| * {@see WifiP2pDeviceList} |
| * {@see android.net.wifi.WpsInfo} |
| */ |
| public class WifiP2pManager { |
| private static final String TAG = "WifiP2pManager"; |
| /** |
| * Broadcast intent action to indicate whether Wi-Fi p2p is enabled or disabled. An |
| * extra {@link #EXTRA_WIFI_STATE} provides the state information as int. |
| * |
| * @see #EXTRA_WIFI_STATE |
| */ |
| @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) |
| public static final String WIFI_P2P_STATE_CHANGED_ACTION = |
| "android.net.wifi.p2p.STATE_CHANGED"; |
| |
| /** |
| * The lookup key for an int that indicates whether Wi-Fi p2p is enabled or disabled. |
| * Retrieve it with {@link android.content.Intent#getIntExtra(String,int)}. |
| * |
| * @see #WIFI_P2P_STATE_DISABLED |
| * @see #WIFI_P2P_STATE_ENABLED |
| */ |
| public static final String EXTRA_WIFI_STATE = "wifi_p2p_state"; |
| |
| /** |
| * Wi-Fi p2p is disabled. |
| * |
| * @see #WIFI_P2P_STATE_CHANGED_ACTION |
| */ |
| public static final int WIFI_P2P_STATE_DISABLED = 1; |
| |
| /** |
| * Wi-Fi p2p is enabled. |
| * |
| * @see #WIFI_P2P_STATE_CHANGED_ACTION |
| */ |
| public static final int WIFI_P2P_STATE_ENABLED = 2; |
| |
| /** |
| * Broadcast intent action indicating that the state of Wi-Fi p2p connectivity |
| * has changed. One extra {@link #EXTRA_WIFI_P2P_INFO} provides the p2p connection info in |
| * the form of a {@link WifiP2pInfo} object. Another extra {@link #EXTRA_NETWORK_INFO} provides |
| * the network info in the form of a {@link android.net.NetworkInfo}. |
| * |
| * @see #EXTRA_WIFI_P2P_INFO |
| * @see #EXTRA_NETWORK_INFO |
| */ |
| @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) |
| public static final String WIFI_P2P_CONNECTION_CHANGED_ACTION = |
| "android.net.wifi.p2p.CONNECTION_STATE_CHANGE"; |
| |
| /** |
| * The lookup key for a {@link android.net.wifi.p2p.WifiP2pInfo} object |
| * Retrieve with {@link android.content.Intent#getParcelableExtra(String)}. |
| */ |
| public static final String EXTRA_WIFI_P2P_INFO = "wifiP2pInfo"; |
| |
| /** |
| * The lookup key for a {@link android.net.NetworkInfo} object associated with the |
| * Wi-Fi network. Retrieve with |
| * {@link android.content.Intent#getParcelableExtra(String)}. |
| */ |
| public static final String EXTRA_NETWORK_INFO = "networkInfo"; |
| |
| /** |
| * The lookup key for a {@link android.net.LinkProperties} object associated with the |
| * network. Retrieve with |
| * {@link android.content.Intent#getParcelableExtra(String)}. |
| * @hide |
| */ |
| public static final String EXTRA_LINK_PROPERTIES = "linkProperties"; |
| |
| /** |
| * The lookup key for a {@link android.net.LinkCapabilities} object associated with the |
| * network. Retrieve with |
| * {@link android.content.Intent#getParcelableExtra(String)}. |
| * @hide |
| */ |
| public static final String EXTRA_LINK_CAPABILITIES = "linkCapabilities"; |
| |
| /** |
| * Broadcast intent action indicating that the available peer list has changed. Fetch |
| * the changed list of peers with {@link #requestPeers} |
| */ |
| @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) |
| public static final String WIFI_P2P_PEERS_CHANGED_ACTION = |
| "android.net.wifi.p2p.PEERS_CHANGED"; |
| |
| /** |
| * Broadcast intent action indicating that this device details have changed. |
| */ |
| @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) |
| public static final String WIFI_P2P_THIS_DEVICE_CHANGED_ACTION = |
| "android.net.wifi.p2p.THIS_DEVICE_CHANGED"; |
| |
| /** |
| * The lookup key for a {@link android.net.wifi.p2p.WifiP2pDevice} object |
| * Retrieve with {@link android.content.Intent#getParcelableExtra(String)}. |
| */ |
| public static final String EXTRA_WIFI_P2P_DEVICE = "wifiP2pDevice"; |
| |
| IWifiP2pManager mService; |
| |
| private static final int BASE = Protocol.BASE_WIFI_P2P_MANAGER; |
| |
| /** @hide */ |
| public static final int ENABLE_P2P = BASE + 1; |
| /** @hide */ |
| public static final int ENABLE_P2P_FAILED = BASE + 2; |
| /** @hide */ |
| public static final int ENABLE_P2P_SUCCEEDED = BASE + 3; |
| |
| /** @hide */ |
| public static final int DISABLE_P2P = BASE + 4; |
| /** @hide */ |
| public static final int DISABLE_P2P_FAILED = BASE + 5; |
| /** @hide */ |
| public static final int DISABLE_P2P_SUCCEEDED = BASE + 6; |
| |
| /** @hide */ |
| public static final int DISCOVER_PEERS = BASE + 7; |
| /** @hide */ |
| public static final int DISCOVER_PEERS_FAILED = BASE + 8; |
| /** @hide */ |
| public static final int DISCOVER_PEERS_SUCCEEDED = BASE + 9; |
| |
| /** @hide */ |
| public static final int CONNECT = BASE + 10; |
| /** @hide */ |
| public static final int CONNECT_FAILED = BASE + 11; |
| /** @hide */ |
| public static final int CONNECT_SUCCEEDED = BASE + 12; |
| |
| /** @hide */ |
| public static final int CANCEL_CONNECT = BASE + 13; |
| /** @hide */ |
| public static final int CANCEL_CONNECT_FAILED = BASE + 14; |
| /** @hide */ |
| public static final int CANCEL_CONNECT_SUCCEEDED = BASE + 15; |
| |
| /** @hide */ |
| public static final int CREATE_GROUP = BASE + 16; |
| /** @hide */ |
| public static final int CREATE_GROUP_FAILED = BASE + 17; |
| /** @hide */ |
| public static final int CREATE_GROUP_SUCCEEDED = BASE + 18; |
| |
| /** @hide */ |
| public static final int REMOVE_GROUP = BASE + 19; |
| /** @hide */ |
| public static final int REMOVE_GROUP_FAILED = BASE + 20; |
| /** @hide */ |
| public static final int REMOVE_GROUP_SUCCEEDED = BASE + 21; |
| |
| /** @hide */ |
| public static final int REQUEST_PEERS = BASE + 22; |
| /** @hide */ |
| public static final int RESPONSE_PEERS = BASE + 23; |
| |
| /** @hide */ |
| public static final int REQUEST_CONNECTION_INFO = BASE + 24; |
| /** @hide */ |
| public static final int RESPONSE_CONNECTION_INFO = BASE + 25; |
| |
| /** @hide */ |
| public static final int REQUEST_GROUP_INFO = BASE + 26; |
| /** @hide */ |
| public static final int RESPONSE_GROUP_INFO = BASE + 27; |
| |
| /** |
| * Create a new WifiP2pManager instance. Applications use |
| * {@link android.content.Context#getSystemService Context.getSystemService()} to retrieve |
| * the standard {@link android.content.Context#WIFI_P2P_SERVICE Context.WIFI_P2P_SERVICE}. |
| * @param service the Binder interface |
| * @hide - hide this because it takes in a parameter of type IWifiP2pManager, which |
| * is a system private class. |
| */ |
| public WifiP2pManager(IWifiP2pManager service) { |
| mService = service; |
| } |
| |
| /** |
| * Passed with {@link ActionListener#onFailure}. |
| * Indicates that the operation failed due to an internal error. |
| */ |
| public static final int ERROR = 0; |
| |
| /** |
| * Passed with {@link ActionListener#onFailure}. |
| * Indicates that the operation failed because p2p is unsupported on the device. |
| */ |
| public static final int P2P_UNSUPPORTED = 1; |
| |
| /** |
| * Passed with {@link ActionListener#onFailure}. |
| * Indicates that the operation failed because the framework is busy and |
| * unable to service the request |
| */ |
| public static final int BUSY = 2; |
| |
| /** Interface for callback invocation when framework channel is lost */ |
| public interface ChannelListener { |
| /** |
| * The channel to the framework has been disconnected. |
| * Application could try re-initializing using {@link #initialize} |
| */ |
| public void onChannelDisconnected(); |
| } |
| |
| /** Interface for callback invocation on an application action */ |
| public interface ActionListener { |
| /** The operation succeeded */ |
| public void onSuccess(); |
| /** |
| * The operation failed |
| * @param reason The reason for failure could be one of {@link #P2P_UNSUPPORTED}, |
| * {@link #ERROR} or {@link #BUSY} |
| */ |
| public void onFailure(int reason); |
| } |
| |
| /** Interface for callback invocation when peer list is available */ |
| public interface PeerListListener { |
| /** |
| * The requested peer list is available |
| * @param peers List of available peers |
| */ |
| public void onPeersAvailable(WifiP2pDeviceList peers); |
| } |
| |
| /** Interface for callback invocation when connection info is available */ |
| public interface ConnectionInfoListener { |
| /** |
| * The requested connection info is available |
| * @param info Wi-Fi p2p connection info |
| */ |
| public void onConnectionInfoAvailable(WifiP2pInfo info); |
| } |
| |
| /** Interface for callback invocation when group info is available */ |
| public interface GroupInfoListener { |
| /** |
| * The requested p2p group info is available |
| * @param group Wi-Fi p2p group info |
| */ |
| public void onGroupInfoAvailable(WifiP2pGroup group); |
| } |
| |
| /** |
| * A channel that connects the application to the Wifi p2p framework. |
| * Most p2p operations require a Channel as an argument. An instance of Channel is obtained |
| * by doing a call on {@link #initialize} |
| */ |
| public static class Channel { |
| Channel(Looper looper, ChannelListener l) { |
| mAsyncChannel = new AsyncChannel(); |
| mHandler = new P2pHandler(looper); |
| mChannelListener = l; |
| } |
| private ChannelListener mChannelListener; |
| private HashMap<Integer, Object> mListenerMap = new HashMap<Integer, Object>(); |
| private Object mListenerMapLock = new Object(); |
| private int mListenerKey = 0; |
| |
| AsyncChannel mAsyncChannel; |
| P2pHandler mHandler; |
| class P2pHandler extends Handler { |
| P2pHandler(Looper looper) { |
| super(looper); |
| } |
| |
| @Override |
| public void handleMessage(Message message) { |
| Object listener = getListener(message.arg2); |
| switch (message.what) { |
| case AsyncChannel.CMD_CHANNEL_DISCONNECTED: |
| if (mChannelListener != null) { |
| mChannelListener.onChannelDisconnected(); |
| mChannelListener = null; |
| } |
| break; |
| /* ActionListeners grouped together */ |
| case WifiP2pManager.DISCOVER_PEERS_FAILED: |
| case WifiP2pManager.CONNECT_FAILED: |
| case WifiP2pManager.CANCEL_CONNECT_FAILED: |
| case WifiP2pManager.CREATE_GROUP_FAILED: |
| case WifiP2pManager.REMOVE_GROUP_FAILED: |
| if (listener != null) { |
| ((ActionListener) listener).onFailure(message.arg1); |
| } |
| break; |
| /* ActionListeners grouped together */ |
| case WifiP2pManager.DISCOVER_PEERS_SUCCEEDED: |
| case WifiP2pManager.CONNECT_SUCCEEDED: |
| case WifiP2pManager.CANCEL_CONNECT_SUCCEEDED: |
| case WifiP2pManager.CREATE_GROUP_SUCCEEDED: |
| case WifiP2pManager.REMOVE_GROUP_SUCCEEDED: |
| if (listener != null) { |
| ((ActionListener) listener).onSuccess(); |
| } |
| break; |
| case WifiP2pManager.RESPONSE_PEERS: |
| WifiP2pDeviceList peers = (WifiP2pDeviceList) message.obj; |
| if (listener != null) { |
| ((PeerListListener) listener).onPeersAvailable(peers); |
| } |
| break; |
| case WifiP2pManager.RESPONSE_CONNECTION_INFO: |
| WifiP2pInfo wifiP2pInfo = (WifiP2pInfo) message.obj; |
| if (listener != null) { |
| ((ConnectionInfoListener) listener).onConnectionInfoAvailable(wifiP2pInfo); |
| } |
| break; |
| case WifiP2pManager.RESPONSE_GROUP_INFO: |
| WifiP2pGroup group = (WifiP2pGroup) message.obj; |
| if (listener != null) { |
| ((GroupInfoListener) listener).onGroupInfoAvailable(group); |
| } |
| break; |
| default: |
| Log.d(TAG, "Ignored " + message); |
| break; |
| } |
| } |
| } |
| |
| int putListener(Object listener) { |
| if (listener == null) return 0; |
| int key; |
| synchronized (mListenerMapLock) { |
| key = mListenerKey++; |
| mListenerMap.put(key, listener); |
| } |
| return key; |
| } |
| |
| Object getListener(int key) { |
| synchronized (mListenerMapLock) { |
| return mListenerMap.remove(key); |
| } |
| } |
| } |
| |
| /** |
| * Registers the application with the Wi-Fi framework. This function |
| * must be the first to be called before any p2p operations are performed. |
| * |
| * @param srcContext is the context of the source |
| * @param srcLooper is the Looper on which the callbacks are receivied |
| * @param listener for callback at loss of framework communication. Can be null. |
| * @return Channel instance that is necessary for performing any further p2p operations |
| */ |
| public Channel initialize(Context srcContext, Looper srcLooper, ChannelListener listener) { |
| Messenger messenger = getMessenger(); |
| if (messenger == null) return null; |
| |
| Channel c = new Channel(srcLooper, listener); |
| if (c.mAsyncChannel.connectSync(srcContext, c.mHandler, messenger) |
| == AsyncChannel.STATUS_SUCCESSFUL) { |
| return c; |
| } else { |
| return null; |
| } |
| } |
| |
| /** |
| * Sends in a request to the system to enable p2p. This will pop up a dialog |
| * to the user and upon authorization will enable p2p. |
| * @hide |
| */ |
| public void enableP2p(Channel c) { |
| if (c == null) return; |
| c.mAsyncChannel.sendMessage(ENABLE_P2P); |
| } |
| |
| /** |
| * Sends in a request to the system to disable p2p. This will pop up a dialog |
| * to the user and upon authorization will enable p2p. |
| * @hide |
| */ |
| public void disableP2p(Channel c) { |
| if (c == null) return; |
| c.mAsyncChannel.sendMessage(DISABLE_P2P); |
| } |
| |
| /** |
| * Initiate peer discovery. A discovery process involves scanning for available Wi-Fi peers |
| * for the purpose of establishing a connection. |
| * |
| * <p> The function call immediately returns after sending a discovery request |
| * to the framework. The application is notified of a success or failure to initiate |
| * discovery through listener callbacks {@link ActionListener#onSuccess} or |
| * {@link ActionListener#onFailure}. |
| * |
| * <p> The discovery remains active until a connection is initiated or |
| * a p2p group is formed. Register for {@link #WIFI_P2P_PEERS_CHANGED_ACTION} intent to |
| * determine when the framework notifies of a change as peers are discovered. |
| * |
| * <p> Upon receiving a {@link #WIFI_P2P_PEERS_CHANGED_ACTION} intent, an application |
| * can request for the list of peers using {@link #requestPeers}. |
| * |
| * @param c is the channel created at {@link #initialize} |
| * @param listener for callbacks on success or failure. Can be null. |
| */ |
| public void discoverPeers(Channel c, ActionListener listener) { |
| if (c == null) return; |
| c.mAsyncChannel.sendMessage(DISCOVER_PEERS, 0, c.putListener(listener)); |
| } |
| |
| /** |
| * Start a p2p connection to a device with the specified configuration. |
| * |
| * <p> The function call immediately returns after sending a connection request |
| * to the framework. The application is notified of a success or failure to initiate |
| * connect through listener callbacks {@link ActionListener#onSuccess} or |
| * {@link ActionListener#onFailure}. |
| * |
| * <p> Register for {@link #WIFI_P2P_CONNECTION_CHANGED_ACTION} intent to |
| * determine when the framework notifies of a change in connectivity. |
| * |
| * <p> If the current device is not part of a p2p group, a connect request initiates |
| * a group negotiation with the peer. |
| * |
| * <p> If the current device is part of an existing p2p group or has created |
| * a p2p group with {@link #createGroup}, an invitation to join the group is sent to |
| * the peer device. |
| * |
| * @param c is the channel created at {@link #initialize} |
| * @param config options as described in {@link WifiP2pConfig} class |
| * @param listener for callbacks on success or failure. Can be null. |
| */ |
| public void connect(Channel c, WifiP2pConfig config, ActionListener listener) { |
| if (c == null) return; |
| c.mAsyncChannel.sendMessage(CONNECT, 0, c.putListener(listener), config); |
| } |
| |
| /** |
| * Cancel any ongoing p2p group negotiation |
| * |
| * <p> The function call immediately returns after sending a connection cancellation request |
| * to the framework. The application is notified of a success or failure to initiate |
| * cancellation through listener callbacks {@link ActionListener#onSuccess} or |
| * {@link ActionListener#onFailure}. |
| * |
| * @param c is the channel created at {@link #initialize} |
| * @param listener for callbacks on success or failure. Can be null. |
| */ |
| public void cancelConnect(Channel c, ActionListener listener) { |
| if (c == null) return; |
| c.mAsyncChannel.sendMessage(CANCEL_CONNECT, 0, c.putListener(listener)); |
| } |
| |
| /** |
| * Create a p2p group with the current device as the group owner. This essentially creates |
| * an access point that can accept connections from legacy clients as well as other p2p |
| * devices. |
| * |
| * <p class="note"><strong>Note:</strong> |
| * This function would normally not be used unless the current device needs |
| * to form a p2p connection with a legacy client |
| * |
| * <p> The function call immediately returns after sending a group creation request |
| * to the framework. The application is notified of a success or failure to initiate |
| * group creation through listener callbacks {@link ActionListener#onSuccess} or |
| * {@link ActionListener#onFailure}. |
| * |
| * <p> Application can request for the group details with {@link #requestGroupInfo}. |
| * |
| * @param c is the channel created at {@link #initialize} |
| * @param listener for callbacks on success or failure. Can be null. |
| */ |
| public void createGroup(Channel c, ActionListener listener) { |
| if (c == null) return; |
| c.mAsyncChannel.sendMessage(CREATE_GROUP, 0, c.putListener(listener)); |
| } |
| |
| /** |
| * Remove the current p2p group. |
| * |
| * <p> The function call immediately returns after sending a group removal request |
| * to the framework. The application is notified of a success or failure to initiate |
| * group removal through listener callbacks {@link ActionListener#onSuccess} or |
| * {@link ActionListener#onFailure}. |
| * |
| * @param c is the channel created at {@link #initialize} |
| * @param listener for callbacks on success or failure. Can be null. |
| */ |
| public void removeGroup(Channel c, ActionListener listener) { |
| if (c == null) return; |
| c.mAsyncChannel.sendMessage(REMOVE_GROUP, 0, c.putListener(listener)); |
| } |
| |
| /** |
| * Request the current list of peers. |
| * |
| * @param c is the channel created at {@link #initialize} |
| * @param listener for callback when peer list is available. Can be null. |
| */ |
| public void requestPeers(Channel c, PeerListListener listener) { |
| if (c == null) return; |
| c.mAsyncChannel.sendMessage(REQUEST_PEERS, 0, c.putListener(listener)); |
| } |
| |
| /** |
| * Request device connection info. |
| * |
| * @param c is the channel created at {@link #initialize} |
| * @param listener for callback when connection info is available. Can be null. |
| */ |
| public void requestConnectionInfo(Channel c, ConnectionInfoListener listener) { |
| if (c == null) return; |
| c.mAsyncChannel.sendMessage(REQUEST_CONNECTION_INFO, 0, c.putListener(listener)); |
| } |
| |
| /** |
| * Request p2p group info. |
| * |
| * @param c is the channel created at {@link #initialize} |
| * @param listener for callback when group info is available. Can be null. |
| */ |
| public void requestGroupInfo(Channel c, GroupInfoListener listener) { |
| if (c == null) return; |
| c.mAsyncChannel.sendMessage(REQUEST_GROUP_INFO, 0, c.putListener(listener)); |
| } |
| |
| /** |
| * Get a reference to WifiP2pService handler. This is used to establish |
| * an AsyncChannel communication with WifiService |
| * |
| * @return Messenger pointing to the WifiP2pService handler |
| * @hide |
| */ |
| public Messenger getMessenger() { |
| try { |
| return mService.getMessenger(); |
| } catch (RemoteException e) { |
| return null; |
| } |
| } |
| |
| } |
