1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.systemui.statusbar.policy; 18 19 import android.bluetooth.BluetoothAdapter; 20 import android.bluetooth.BluetoothAdapter.BluetoothStateChangeCallback; 21 import android.bluetooth.BluetoothDevice; 22 import android.content.BroadcastReceiver; 23 import android.content.Context; 24 import android.content.Intent; 25 import android.content.IntentFilter; 26 27 import java.util.ArrayList; 28 import java.util.HashSet; 29 import java.util.Set; 30 31 public class BluetoothController extends BroadcastReceiver { 32 private static final String TAG = "StatusBar.BluetoothController"; 33 34 private boolean mEnabled = false; 35 36 private Set<BluetoothDevice> mBondedDevices = new HashSet<BluetoothDevice>(); 37 38 private ArrayList<BluetoothStateChangeCallback> mChangeCallbacks = 39 new ArrayList<BluetoothStateChangeCallback>(); 40 BluetoothController(Context context)41 public BluetoothController(Context context) { 42 43 IntentFilter filter = new IntentFilter(); 44 filter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED); 45 filter.addAction(BluetoothAdapter.ACTION_CONNECTION_STATE_CHANGED); 46 filter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED); 47 context.registerReceiver(this, filter); 48 49 final BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter(); 50 if (adapter != null) { 51 handleAdapterStateChange(adapter.getState()); 52 } 53 fireCallbacks(); 54 updateBondedBluetoothDevices(); 55 } 56 addStateChangedCallback(BluetoothStateChangeCallback cb)57 public void addStateChangedCallback(BluetoothStateChangeCallback cb) { 58 mChangeCallbacks.add(cb); 59 } 60 getBondedBluetoothDevices()61 public Set<BluetoothDevice> getBondedBluetoothDevices() { 62 return mBondedDevices; 63 } 64 65 @Override onReceive(Context context, Intent intent)66 public void onReceive(Context context, Intent intent) { 67 final String action = intent.getAction(); 68 69 if (action.equals(BluetoothAdapter.ACTION_STATE_CHANGED)) { 70 handleAdapterStateChange( 71 intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR)); 72 } 73 fireCallbacks(); 74 updateBondedBluetoothDevices(); 75 } 76 updateBondedBluetoothDevices()77 private void updateBondedBluetoothDevices() { 78 mBondedDevices.clear(); 79 80 BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter(); 81 if (adapter != null) { 82 Set<BluetoothDevice> devices = adapter.getBondedDevices(); 83 if (devices != null) { 84 for (BluetoothDevice device : devices) { 85 if (device.getBondState() != BluetoothDevice.BOND_NONE) { 86 mBondedDevices.add(device); 87 } 88 } 89 } 90 } 91 } 92 handleAdapterStateChange(int adapterState)93 private void handleAdapterStateChange(int adapterState) { 94 mEnabled = (adapterState == BluetoothAdapter.STATE_ON); 95 } 96 fireCallbacks()97 private void fireCallbacks() { 98 for (BluetoothStateChangeCallback cb : mChangeCallbacks) { 99 cb.onBluetoothStateChange(mEnabled); 100 } 101 } 102 } 103