Java tutorial
/* * Copyright (C) 2010-2016 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.bluetooth; import android.Manifest; import android.annotation.IntDef; import android.annotation.RequiresPermission; import android.annotation.SystemApi; import android.annotation.UnsupportedAppUsage; import android.os.Build; import java.lang.annotation.Retention; import java.lang.annotation.RetentionPolicy; import java.util.List; /** * Public APIs for the Bluetooth Profiles. * * <p> Clients should call {@link BluetoothAdapter#getProfileProxy}, * to get the Profile Proxy. Each public profile implements this * interface. */ public interface BluetoothProfile { /** * Extra for the connection state intents of the individual profiles. * * This extra represents the current connection state of the profile of the * Bluetooth device. */ String EXTRA_STATE = "android.bluetooth.profile.extra.STATE"; /** * Extra for the connection state intents of the individual profiles. * * This extra represents the previous connection state of the profile of the * Bluetooth device. */ String EXTRA_PREVIOUS_STATE = "android.bluetooth.profile.extra.PREVIOUS_STATE"; /** The profile is in disconnected state */ int STATE_DISCONNECTED = 0; /** The profile is in connecting state */ int STATE_CONNECTING = 1; /** The profile is in connected state */ int STATE_CONNECTED = 2; /** The profile is in disconnecting state */ int STATE_DISCONNECTING = 3; /** @hide */ @IntDef({ STATE_DISCONNECTED, STATE_CONNECTING, STATE_CONNECTED, STATE_DISCONNECTING, }) @Retention(RetentionPolicy.SOURCE) public @interface BtProfileState { } /** * Headset and Handsfree profile */ int HEADSET = 1; /** * A2DP profile. */ int A2DP = 2; /** * Health Profile * * @deprecated Health Device Profile (HDP) and MCAP protocol are no longer used. New * apps should use Bluetooth Low Energy based solutions such as {@link BluetoothGatt}, * {@link BluetoothAdapter#listenUsingL2capChannel()}, or * {@link BluetoothDevice#createL2capChannel(int)} */ @Deprecated int HEALTH = 3; /** * HID Host * * @hide */ int HID_HOST = 4; /** * PAN Profile * * @hide */ @UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023) int PAN = 5; /** * PBAP * * @hide */ int PBAP = 6; /** * GATT */ int GATT = 7; /** * GATT_SERVER */ int GATT_SERVER = 8; /** * MAP Profile * * @hide */ int MAP = 9; /* * SAP Profile * @hide */ int SAP = 10; /** * A2DP Sink Profile * * @hide */ @UnsupportedAppUsage int A2DP_SINK = 11; /** * AVRCP Controller Profile * * @hide */ @UnsupportedAppUsage int AVRCP_CONTROLLER = 12; /** * AVRCP Target Profile * * @hide */ int AVRCP = 13; /** * Headset Client - HFP HF Role * * @hide */ int HEADSET_CLIENT = 16; /** * PBAP Client * * @hide */ int PBAP_CLIENT = 17; /** * MAP Messaging Client Equipment (MCE) * * @hide */ int MAP_CLIENT = 18; /** * HID Device */ int HID_DEVICE = 19; /** * Object Push Profile (OPP) * * @hide */ int OPP = 20; /** * Hearing Aid Device * */ int HEARING_AID = 21; /** * Max profile ID. This value should be updated whenever a new profile is added to match * the largest value assigned to a profile. * * @hide */ int MAX_PROFILE_ID = 21; /** * Default priority for devices that we try to auto-connect to and * and allow incoming connections for the profile * * @hide **/ @UnsupportedAppUsage int PRIORITY_AUTO_CONNECT = 1000; /** * Default priority for devices that allow incoming * and outgoing connections for the profile * * @hide **/ @SystemApi int PRIORITY_ON = 100; /** * Default priority for devices that does not allow incoming * connections and outgoing connections for the profile. * * @hide **/ @SystemApi int PRIORITY_OFF = 0; /** * Default priority when not set or when the device is unpaired * * @hide */ @UnsupportedAppUsage int PRIORITY_UNDEFINED = -1; /** * Get connected devices for this specific profile. * * <p> Return the set of devices which are in state {@link #STATE_CONNECTED} * * @return List of devices. The list will be empty on error. */ @RequiresPermission(Manifest.permission.BLUETOOTH) public List<BluetoothDevice> getConnectedDevices(); /** * Get a list of devices that match any of the given connection * states. * * <p> If none of the devices match any of the given states, * an empty list will be returned. * * @param states Array of states. States can be one of {@link #STATE_CONNECTED}, {@link * #STATE_CONNECTING}, {@link #STATE_DISCONNECTED}, {@link #STATE_DISCONNECTING}, * @return List of devices. The list will be empty on error. */ @RequiresPermission(Manifest.permission.BLUETOOTH) public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states); /** * Get the current connection state of the profile * * @param device Remote bluetooth device. * @return State of the profile connection. One of {@link #STATE_CONNECTED}, {@link * #STATE_CONNECTING}, {@link #STATE_DISCONNECTED}, {@link #STATE_DISCONNECTING} */ @RequiresPermission(Manifest.permission.BLUETOOTH) @BtProfileState int getConnectionState(BluetoothDevice device); /** * An interface for notifying BluetoothProfile IPC clients when they have * been connected or disconnected to the service. */ public interface ServiceListener { /** * Called to notify the client when the proxy object has been * connected to the service. * * @param profile - One of {@link #HEADSET} or {@link #A2DP} * @param proxy - One of {@link BluetoothHeadset} or {@link BluetoothA2dp} */ public void onServiceConnected(int profile, BluetoothProfile proxy); /** * Called to notify the client that this proxy object has been * disconnected from the service. * * @param profile - One of {@link #HEADSET} or {@link #A2DP} */ public void onServiceDisconnected(int profile); } /** * Convert an integer value of connection state into human readable string * * @param connectionState - One of {@link #STATE_DISCONNECTED}, {@link #STATE_CONNECTING}, * {@link #STATE_CONNECTED}, or {@link #STATE_DISCONNECTED} * @return a string representation of the connection state, STATE_UNKNOWN if the state * is not defined * @hide */ static String getConnectionStateName(int connectionState) { switch (connectionState) { case STATE_DISCONNECTED: return "STATE_DISCONNECTED"; case STATE_CONNECTING: return "STATE_CONNECTING"; case STATE_CONNECTED: return "STATE_CONNECTED"; case STATE_DISCONNECTING: return "STATE_DISCONNECTING"; default: return "STATE_UNKNOWN"; } } }