1 /* 2 * Copyright (C) 2019 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.development.bluetooth; 18 19 import android.bluetooth.BluetoothA2dp; 20 import android.bluetooth.BluetoothAdapter; 21 import android.bluetooth.BluetoothDevice; 22 import android.bluetooth.BluetoothManager; 23 import android.bluetooth.BluetoothProfile; 24 import android.content.Context; 25 26 import androidx.annotation.VisibleForTesting; 27 28 import com.android.settings.core.PreferenceControllerMixin; 29 import com.android.settings.development.BluetoothA2dpConfigStore; 30 import com.android.settings.development.BluetoothServiceConnectionListener; 31 import com.android.settingslib.core.lifecycle.Lifecycle; 32 import com.android.settingslib.core.lifecycle.LifecycleObserver; 33 import com.android.settingslib.core.lifecycle.events.OnDestroy; 34 import com.android.settingslib.development.DeveloperOptionsPreferenceController; 35 36 import java.util.List; 37 38 /** 39 * Abstract class for Bluetooth A2DP config controller in developer option. 40 */ 41 public abstract class AbstractBluetoothPreferenceController extends 42 DeveloperOptionsPreferenceController implements BluetoothServiceConnectionListener, 43 LifecycleObserver, OnDestroy, PreferenceControllerMixin { 44 45 protected volatile BluetoothA2dp mBluetoothA2dp; 46 47 @VisibleForTesting 48 BluetoothAdapter mBluetoothAdapter; 49 AbstractBluetoothPreferenceController(Context context, Lifecycle lifecycle, BluetoothA2dpConfigStore store)50 public AbstractBluetoothPreferenceController(Context context, Lifecycle lifecycle, 51 BluetoothA2dpConfigStore store) { 52 super(context); 53 if (lifecycle != null) { 54 lifecycle.addObserver(this); 55 } 56 mBluetoothAdapter = context.getSystemService(BluetoothManager.class).getAdapter(); 57 } 58 59 @Override onBluetoothServiceConnected(BluetoothA2dp bluetoothA2dp)60 public void onBluetoothServiceConnected(BluetoothA2dp bluetoothA2dp) { 61 mBluetoothA2dp = bluetoothA2dp; 62 updateState(mPreference); 63 } 64 65 @Override onBluetoothCodecUpdated()66 public void onBluetoothCodecUpdated() { 67 updateState(mPreference); 68 } 69 70 @Override onBluetoothServiceDisconnected()71 public void onBluetoothServiceDisconnected() { 72 mBluetoothA2dp = null; 73 updateState(mPreference); 74 } 75 76 @Override onDestroy()77 public void onDestroy() { 78 mBluetoothA2dp = null; 79 } 80 81 /** 82 * Callback interface for this class to manipulate data from controller. 83 */ 84 public interface Callback { 85 /** 86 * Callback method to notify preferences when the Bluetooth A2DP config is changed. 87 */ onBluetoothCodecChanged()88 void onBluetoothCodecChanged(); 89 90 /** 91 * Callback method to notify preferences when the HD audio(optional codec) state is changed. 92 * 93 * @param enabled Is {@code true} when the setting is enabled. 94 */ onBluetoothHDAudioEnabled(boolean enabled)95 void onBluetoothHDAudioEnabled(boolean enabled); 96 } 97 getA2dpActiveDevice()98 protected BluetoothDevice getA2dpActiveDevice() { 99 if (mBluetoothAdapter == null) { 100 return null; 101 } 102 List<BluetoothDevice> activeDevices = 103 mBluetoothAdapter.getActiveDevices(BluetoothProfile.A2DP); 104 return (activeDevices.size() > 0) ? activeDevices.get(0) : null; 105 } 106 } 107