1 /* 2 * Copyright (C) 2017 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.settings.bluetooth; 18 19 import android.bluetooth.BluetoothAdapter; 20 import android.bluetooth.BluetoothDevice; 21 import android.content.Context; 22 import android.util.Log; 23 24 import androidx.annotation.VisibleForTesting; 25 26 import com.android.settings.R; 27 import com.android.settings.widget.SummaryUpdater; 28 import com.android.settingslib.bluetooth.BluetoothCallback; 29 import com.android.settingslib.bluetooth.CachedBluetoothDevice; 30 import com.android.settingslib.bluetooth.LocalBluetoothManager; 31 32 import java.util.Set; 33 34 /** 35 * Helper class that listeners to bluetooth callback and notify client when there is update in 36 * bluetooth summary info. 37 */ 38 public final class BluetoothSummaryUpdater extends SummaryUpdater implements BluetoothCallback { 39 private static final String TAG = "BluetoothSummaryUpdater"; 40 41 private final BluetoothAdapter mBluetoothAdapter; 42 private final LocalBluetoothManager mBluetoothManager; 43 BluetoothSummaryUpdater(Context context, OnSummaryChangeListener listener, LocalBluetoothManager bluetoothManager)44 public BluetoothSummaryUpdater(Context context, OnSummaryChangeListener listener, 45 LocalBluetoothManager bluetoothManager) { 46 super(context, listener); 47 mBluetoothManager = bluetoothManager; 48 mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); 49 } 50 51 @Override onBluetoothStateChanged(int bluetoothState)52 public void onBluetoothStateChanged(int bluetoothState) { 53 notifyChangeIfNeeded(); 54 } 55 56 @Override onConnectionStateChanged(CachedBluetoothDevice cachedDevice, int state)57 public void onConnectionStateChanged(CachedBluetoothDevice cachedDevice, int state) { 58 notifyChangeIfNeeded(); 59 } 60 61 @Override register(boolean listening)62 public void register(boolean listening) { 63 if (mBluetoothAdapter == null) { 64 return; 65 } 66 if (listening) { 67 notifyChangeIfNeeded(); 68 mBluetoothManager.getEventManager().registerCallback(this); 69 } else { 70 mBluetoothManager.getEventManager().unregisterCallback(this); 71 } 72 } 73 74 @Override getSummary()75 public String getSummary() { 76 if (mBluetoothAdapter == null || !mBluetoothAdapter.isEnabled()) { 77 return mContext.getString(R.string.bluetooth_disabled); 78 } 79 switch (mBluetoothAdapter.getConnectionState()) { 80 case BluetoothAdapter.STATE_CONNECTED: 81 return getConnectedDeviceSummary(); 82 case BluetoothAdapter.STATE_CONNECTING: 83 return mContext.getString(R.string.bluetooth_connecting); 84 case BluetoothAdapter.STATE_DISCONNECTING: 85 return mContext.getString(R.string.bluetooth_disconnecting); 86 default: 87 return mContext.getString(R.string.disconnected); 88 } 89 } 90 91 @VisibleForTesting getConnectedDeviceSummary()92 String getConnectedDeviceSummary() { 93 String deviceName = null; 94 int count = 0; 95 final Set<BluetoothDevice> devices = mBluetoothAdapter.getBondedDevices(); 96 if (devices == null) { 97 Log.e(TAG, "getConnectedDeviceSummary, bonded devices are null"); 98 return mContext.getString(R.string.bluetooth_disabled); 99 } else if (devices.isEmpty()) { 100 Log.e(TAG, "getConnectedDeviceSummary, no bonded devices"); 101 return mContext.getString(R.string.disconnected); 102 } 103 for (BluetoothDevice device : devices) { 104 if (device.isConnected()) { 105 deviceName = device.getName(); 106 count++; 107 if (count > 1) { 108 break; 109 } 110 } 111 } 112 if (deviceName == null) { 113 Log.e(TAG, "getConnectedDeviceSummary, deviceName is null, numBondedDevices=" 114 + devices.size()); 115 for (BluetoothDevice device : devices) { 116 Log.e(TAG, "getConnectedDeviceSummary, device=" + device.getName() + "[" 117 + device.getAddress() + "]" + ", isConnected=" + device.isConnected()); 118 } 119 return mContext.getString(R.string.disconnected); 120 } 121 return count > 1 ? mContext.getString(R.string.bluetooth_connected_multiple_devices_summary) 122 : mContext.getString(R.string.bluetooth_connected_summary, deviceName); 123 } 124 125 } 126