263 lines
11 KiB
Java
263 lines
11 KiB
Java
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.bluetooth;
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import android.annotation.RequiresFeature;
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import android.annotation.RequiresNoPermission;
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import android.annotation.RequiresPermission;
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import android.annotation.SystemService;
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import android.bluetooth.annotations.RequiresBluetoothConnectPermission;
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import android.bluetooth.annotations.RequiresLegacyBluetoothPermission;
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import android.content.AttributionSource;
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import android.content.Context;
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import android.content.pm.PackageManager;
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import android.os.RemoteException;
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import android.util.Log;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* High level manager used to obtain an instance of an {@link BluetoothAdapter} and to conduct
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* overall Bluetooth Management.
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*
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* <p>Use {@link android.content.Context#getSystemService(java.lang.String)} with {@link
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* Context#BLUETOOTH_SERVICE} to create an {@link BluetoothManager}, then call {@link #getAdapter}
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* to obtain the {@link BluetoothAdapter}. <div class="special reference">
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*
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* <h3>Developer Guides</h3>
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*
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* <p>For more information about using BLUETOOTH, read the <a href=
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* "{@docRoot}guide/topics/connectivity/bluetooth.html">Bluetooth</a> developer guide. </div>
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*
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* @see Context#getSystemService
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* @see BluetoothAdapter#getDefaultAdapter()
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*/
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@SystemService(Context.BLUETOOTH_SERVICE)
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@RequiresFeature(PackageManager.FEATURE_BLUETOOTH)
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public final class BluetoothManager {
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private static final String TAG = "BluetoothManager";
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private static final boolean DBG = false;
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private final AttributionSource mAttributionSource;
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private final BluetoothAdapter mAdapter;
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/** @hide */
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public BluetoothManager(Context context) {
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mAttributionSource = context.getAttributionSource();
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mAdapter = BluetoothAdapter.createAdapter(mAttributionSource);
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}
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/**
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* Get the BLUETOOTH Adapter for this device.
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*
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* @return the BLUETOOTH Adapter
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*/
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@RequiresNoPermission
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public BluetoothAdapter getAdapter() {
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return mAdapter;
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}
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/**
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* Get the current connection state of the profile to the remote device.
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*
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* <p>This is not specific to any application configuration but represents the connection state
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* of the local Bluetooth adapter for certain profile. This can be used by applications like
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* status bar which would just like to know the state of Bluetooth.
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*
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* @param device Remote bluetooth device.
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* @param profile GATT or GATT_SERVER
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* @return State of the profile connection. One of {@link BluetoothProfile#STATE_CONNECTED},
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* {@link BluetoothProfile#STATE_CONNECTING}, {@link BluetoothProfile#STATE_DISCONNECTED},
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* {@link BluetoothProfile#STATE_DISCONNECTING}
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*/
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@RequiresLegacyBluetoothPermission
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public int getConnectionState(BluetoothDevice device, int profile) {
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if (DBG) Log.d(TAG, "getConnectionState()");
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List<BluetoothDevice> connectedDevices = getConnectedDevices(profile);
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for (BluetoothDevice connectedDevice : connectedDevices) {
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if (device.equals(connectedDevice)) {
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return BluetoothProfile.STATE_CONNECTED;
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}
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}
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return BluetoothProfile.STATE_DISCONNECTED;
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}
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/**
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* Get connected devices for the specified profile.
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*
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* <p>Return the set of devices which are in state {@link BluetoothProfile#STATE_CONNECTED}
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*
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* <p>This is not specific to any application configuration but represents the connection state
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* of Bluetooth for this profile. This can be used by applications like status bar which would
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* just like to know the state of Bluetooth.
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*
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* @param profile GATT or GATT_SERVER
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* @return List of devices. The list will be empty on error.
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*/
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@RequiresLegacyBluetoothPermission
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public List<BluetoothDevice> getConnectedDevices(int profile) {
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if (DBG) Log.d(TAG, "getConnectedDevices");
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return getDevicesMatchingConnectionStates(
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profile, new int[] {BluetoothProfile.STATE_CONNECTED});
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}
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/**
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* Get a list of devices that match any of the given connection states.
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*
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* <p>If none of the devices match any of the given states, an empty list will be returned.
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*
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* <p>This is not specific to any application configuration but represents the connection state
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* of the local Bluetooth adapter for this profile. This can be used by applications like status
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* bar which would just like to know the state of the local adapter.
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*
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* @param profile GATT or GATT_SERVER
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* @param states Array of states. States can be one of {@link BluetoothProfile#STATE_CONNECTED},
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* {@link BluetoothProfile#STATE_CONNECTING}, {@link BluetoothProfile#STATE_DISCONNECTED},
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* {@link BluetoothProfile#STATE_DISCONNECTING},
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* @return List of devices. The list will be empty on error.
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*/
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@RequiresLegacyBluetoothPermission
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public List<BluetoothDevice> getDevicesMatchingConnectionStates(int profile, int[] states) {
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if (DBG) Log.d(TAG, "getDevicesMatchingConnectionStates");
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if (profile != BluetoothProfile.GATT && profile != BluetoothProfile.GATT_SERVER) {
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throw new IllegalArgumentException("Profile not supported: " + profile);
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}
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List<BluetoothDevice> devices = new ArrayList<BluetoothDevice>();
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try {
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IBluetoothGatt iGatt = mAdapter.getBluetoothGatt();
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if (iGatt == null) return devices;
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devices =
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Attributable.setAttributionSource(
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iGatt.getDevicesMatchingConnectionStates(states, mAttributionSource),
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mAttributionSource);
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} catch (RemoteException e) {
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Log.e(TAG, "", e);
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}
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return devices;
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}
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/**
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* Open a GATT Server The callback is used to deliver results to Caller, such as connection
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* status as well as the results of any other GATT server operations. The method returns a
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* BluetoothGattServer instance. You can use BluetoothGattServer to conduct GATT server
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* operations.
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*
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* @param context App context
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* @param callback GATT server callback handler that will receive asynchronous callbacks.
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* @return BluetoothGattServer instance
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*/
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public BluetoothGattServer openGattServer(
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Context context, BluetoothGattServerCallback callback) {
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return (openGattServer(context, callback, BluetoothDevice.TRANSPORT_AUTO));
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}
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/**
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* Open a GATT Server The callback is used to deliver results to Caller, such as connection
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* status as well as the results of any other GATT server operations. The method returns a
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* BluetoothGattServer instance. You can use BluetoothGattServer to conduct GATT server
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* operations.
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*
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* @param context App context
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* @param callback GATT server callback handler that will receive asynchronous callbacks.
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* @param eattSupport indicates if server should use eatt channel for notifications.
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* @return BluetoothGattServer instance
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* @hide
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*/
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public BluetoothGattServer openGattServer(
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Context context, BluetoothGattServerCallback callback, boolean eattSupport) {
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return (openGattServer(context, callback, BluetoothDevice.TRANSPORT_AUTO, eattSupport));
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}
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/**
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* Open a GATT Server The callback is used to deliver results to Caller, such as connection
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* status as well as the results of any other GATT server operations. The method returns a
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* BluetoothGattServer instance. You can use BluetoothGattServer to conduct GATT server
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* operations.
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*
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* @param context App context
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* @param callback GATT server callback handler that will receive asynchronous callbacks.
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* @param transport preferred transport for GATT connections to remote dual-mode devices {@link
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* BluetoothDevice#TRANSPORT_AUTO} or {@link BluetoothDevice#TRANSPORT_BREDR} or {@link
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* BluetoothDevice#TRANSPORT_LE}
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* @return BluetoothGattServer instance
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* @hide
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*/
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public BluetoothGattServer openGattServer(
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Context context, BluetoothGattServerCallback callback, int transport) {
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return (openGattServer(context, callback, transport, false));
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}
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/**
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* Open a GATT Server The callback is used to deliver results to Caller, such as connection
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* status as well as the results of any other GATT server operations. The method returns a
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* BluetoothGattServer instance. You can use BluetoothGattServer to conduct GATT server
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* operations.
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*
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* @param context App context
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* @param callback GATT server callback handler that will receive asynchronous callbacks.
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* @param transport preferred transport for GATT connections to remote dual-mode devices {@link
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* BluetoothDevice#TRANSPORT_AUTO} or {@link BluetoothDevice#TRANSPORT_BREDR} or {@link
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* BluetoothDevice#TRANSPORT_LE}
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* @param eattSupport indicates if server should use eatt channel for notifications.
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* @return BluetoothGattServer instance
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* @hide
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*/
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@RequiresBluetoothConnectPermission
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@RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
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public BluetoothGattServer openGattServer(
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Context context,
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BluetoothGattServerCallback callback,
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int transport,
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boolean eattSupport) {
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if (context == null || callback == null) {
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throw new IllegalArgumentException("null parameter: " + context + " " + callback);
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}
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// TODO(Bluetooth) check whether platform support BLE
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// Do the check here or in GattServer?
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IBluetoothGatt iGatt = mAdapter.getBluetoothGatt();
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if (iGatt == null) {
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Log.e(TAG, "Fail to get GATT Server connection");
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return null;
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}
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BluetoothGattServer mGattServer = new BluetoothGattServer(iGatt, transport, mAdapter);
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Boolean regStatus = mGattServer.registerCallback(callback, eattSupport);
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return regStatus ? mGattServer : null;
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}
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}
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