Android TeleComm 初探
安卓在5.0之后在TeleService和IncallUI之间多加了一层TeleComm，个人感觉是不想让IncallUI和Phone进程联系过于紧密，也便于其他通话方式的添加（不仅仅局限于通过电信运营商拨打传统电话），好了话不多说，开始分析，本文基于安卓7.1分析．
1．首先SystemServer在startOtherServices函数里会拉起TelecomLoaderService
mSystemServiceManager.startService(TelecomLoaderService.class);２．然后TelecomLoaderService回去连接TelecomService
private static final ComponentName SERVICE_COMPONENT = new ComponentName(
"com.android.server.telecom",
"com.android.server.telecom.components.TelecomService");
private void connectToTelecom() {
synchronized (mLock) {
if (mServiceConnection != null) {
// TODO: Is unbinding worth doing or wait for system to rebind?
mContext.unbindService(mServiceConnection);
mServiceConnection = null;
}
TelecomServiceConnection serviceConnection = new TelecomServiceConnection();
Intent intent = new Intent(SERVICE_ACTION);
intent.setComponent(SERVICE_COMPONENT);
int flags = Context.BIND_IMPORTANT | Context.BIND_FOREGROUND_SERVICE
| Context.BIND_AUTO_CREATE;
// Bind to Telecom and register the service
if (mContext.bindServiceAsUser(intent, serviceConnection, flags, UserHandle.SYSTEM)) {
mServiceConnection = serviceConnection;
}
}
}此处要注意，绑定服务后TelecomLoaderService会把返回的binder对象进行ServiceManager.addService的操作
ServiceManager.addService(Context.TELECOM_SERVICE, service);所以我们通过context.getSystemService()获取到的TelecomManager对象实质调用的是该处绑定的服务在onBind中返回的Binder对象，该服务的类名为：com.android.server.telecom.components.TelecomService．
３．进入TelecomService的onBind方法
@Override
public IBinder onBind(Intent intent) {
Log.d(this, "onBind");
initializeTelecomSystem(this);
synchronized (getTelecomSystem().getLock()) {
return getTelecomSystem().getTelecomServiceImpl().getBinder();
}
}
static void initializeTelecomSystem(Context context) {
if (TelecomSystem.getInstance() == null) {
final NotificationManager notificationManager =
(NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
TelecomSystem.setInstance(
new TelecomSystem(
context,
new MissedCallNotifierImpl.MissedCallNotifierImplFactory() {
@Override
public MissedCallNotifierImpl makeMissedCallNotifierImpl(
Context context,
PhoneAccountRegistrar phoneAccountRegistrar,
PhoneNumberUtilsAdapter phoneNumberUtilsAdapter) {
return new MissedCallNotifierImpl(context,
phoneAccountRegistrar, phoneNumberUtilsAdapter);
}
},
new CallerInfoAsyncQueryFactory() {
@Override
public CallerInfoAsyncQuery startQuery(int token, Context context,
String number,
CallerInfoAsyncQuery.OnQueryCompleteListener listener,
Object cookie) {
Log.i(TelecomSystem.getInstance(),
"CallerInfoAsyncQuery.startQuery number=%s cookie=%s",
Log.pii(number), cookie);
return CallerInfoAsyncQuery.startQuery(
token, context, number, listener, cookie);
}
},
new HeadsetMediaButtonFactory() {
@Override
public HeadsetMediaButton create(
Context context,
CallsManager callsManager,
TelecomSystem.SyncRoot lock) {
return new HeadsetMediaButton(context, callsManager, lock);
}
},
new ProximitySensorManagerFactory() {
@Override
public ProximitySensorManager create(
Context context,
CallsManager callsManager) {
return new ProximitySensorManager(
new TelecomWakeLock(
context,
PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK,
ProximitySensorManager.class.getSimpleName()),
callsManager);
}
},
new InCallWakeLockControllerFactory() {
@Override
public InCallWakeLockController create(Context context,
CallsManager callsManager) {
return new InCallWakeLockController(
new TelecomWakeLock(context,
PowerManager.FULL_WAKE_LOCK,
InCallWakeLockController.class.getSimpleName()),
callsManager);
}
},
new CallAudioManager.AudioServiceFactory() {
@Override
public IAudioService getAudioService() {
return IAudioService.Stub.asInterface(
ServiceManager.getService(Context.AUDIO_SERVICE));
}
},
new BluetoothPhoneServiceImpl.BluetoothPhoneServiceImplFactory() {
@Override
public BluetoothPhoneServiceImpl makeBluetoothPhoneServiceImpl(
Context context, TelecomSystem.SyncRoot lock,
CallsManager callsManager,
PhoneAccountRegistrar phoneAccountRegistrar) {
return new BluetoothPhoneServiceImpl(context, lock,
callsManager, new BluetoothAdapterProxy(),
phoneAccountRegistrar);
}
},
new Timeouts.Adapter(),
new AsyncRingtonePlayer(),
new ViceNotifier() {
@Override
public ViceNotificationImpl create(Context context,
CallsManager callsManager) {
return new ViceNotificationImpl(
context.getApplicationContext(), callsManager);
}
},
new PhoneNumberUtilsAdapterImpl(),
new InterruptionFilterProxy() {
@Override
public void setInterruptionFilter(int interruptionFilter) {
notificationManager.setInterruptionFilter(interruptionFilter);
}
@Override
public int getCurrentInterruptionFilter() {
return notificationManager.getCurrentInterruptionFilter();
}
}
));
}
if (BluetoothAdapter.getDefaultAdapter() != null) {
context.startService(new Intent(context, BluetoothPhoneService.class));
}
}可以看出该处主要初始化了一个TelecomSystem的对象，然后在onBind方法中返回了getTelecomSystem().getTelecomServiceImpl().getBinder()．
4．TelecomSystem中初始化了一大堆对象，其中核心为CallsManager，TelecomServiceImpl
public TelecomSystem(
Context context,
MissedCallNotifierImplFactory missedCallNotifierImplFactory,
CallerInfoAsyncQueryFactory callerInfoAsyncQueryFactory,
HeadsetMediaButtonFactory headsetMediaButtonFactory,
ProximitySensorManagerFactory proximitySensorManagerFactory,
InCallWakeLockControllerFactory inCallWakeLockControllerFactory,
AudioServiceFactory audioServiceFactory,
BluetoothPhoneServiceImplFactory
bluetoothPhoneServiceImplFactory,
Timeouts.Adapter timeoutsAdapter,
AsyncRingtonePlayer asyncRingtonePlayer,
ViceNotifier vicenotifier,
PhoneNumberUtilsAdapter phoneNumberUtilsAdapter,
InterruptionFilterProxy interruptionFilterProxy) {
mContext = context.getApplicationContext();
Log.setContext(mContext);
Log.initMd5Sum();
Log.startSession("TS.init");
mViceNotifier = vicenotifier;
mPhoneAccountRegistrar = new PhoneAccountRegistrar(mContext);
mContactsAsyncHelper = new ContactsAsyncHelper(
new ContactsAsyncHelper.ContentResolverAdapter() {
@Override
public InputStream openInputStream(Context context, Uri uri)
throws FileNotFoundException {
return context.getContentResolver().openInputStream(uri);
}
});
BluetoothManager bluetoothManager = new BluetoothManager(mContext,
new BluetoothAdapterProxy());
WiredHeadsetManager wiredHeadsetManager = new WiredHeadsetManager(mContext);
SystemStateProvider systemStateProvider = new SystemStateProvider(mContext);
mMissedCallNotifier = missedCallNotifierImplFactory
.makeMissedCallNotifierImpl(mContext, mPhoneAccountRegistrar,
phoneNumberUtilsAdapter);
DefaultDialerManagerAdapter defaultDialerAdapter =
new TelecomServiceImpl.DefaultDialerManagerAdapterImpl();
mCallsManager = new CallsManager(
mContext,
mLock,
mContactsAsyncHelper,
callerInfoAsyncQueryFactory,
mMissedCallNotifier,
mPhoneAccountRegistrar,
headsetMediaButtonFactory,
proximitySensorManagerFactory,
inCallWakeLockControllerFactory,
audioServiceFactory,
bluetoothManager,
wiredHeadsetManager,
systemStateProvider,
defaultDialerAdapter,
timeoutsAdapter,
asyncRingtonePlayer,
mViceNotifier,
phoneNumberUtilsAdapter,
interruptionFilterProxy);
mRespondViaSmsManager = new RespondViaSmsManager(mCallsManager, mLock);
mCallsManager.setRespondViaSmsManager(mRespondViaSmsManager);
mContext.registerReceiver(mUserSwitchedReceiver, USER_SWITCHED_FILTER);
mContext.registerReceiver(mUserStartingReceiver, USER_STARTING_FILTER);
mBluetoothPhoneServiceImpl = bluetoothPhoneServiceImplFactory.makeBluetoothPhoneServiceImpl(
mContext, mLock, mCallsManager, mPhoneAccountRegistrar);
mCallIntentProcessor = new CallIntentProcessor(mContext, mCallsManager);
mTelecomBroadcastIntentProcessor = new TelecomBroadcastIntentProcessor(
mContext, mCallsManager);
// Register the receiver for the dialer secret codes, used to enable extended logging.
mDialerCodeReceiver = new DialerCodeReceiver(mCallsManager);
mContext.registerReceiver(mDialerCodeReceiver, DIALER_SECRET_CODE_FILTER,
Manifest.permission.CONTROL_INCALL_EXPERIENCE, null);
mTelecomServiceImpl = new TelecomServiceImpl(
mContext, mCallsManager, mPhoneAccountRegistrar,
new CallIntentProcessor.AdapterImpl(),
new UserCallIntentProcessorFactory() {
@Override
public UserCallIntentProcessor create(Context context, UserHandle userHandle) {
return new UserCallIntentProcessor(context, userHandle);
}
},
defaultDialerAdapter,
new TelecomServiceImpl.SubscriptionManagerAdapterImpl(),
mLock);
Log.endSession();
}总结：先把TelecomSystem，CallsManager，TelecomServiceImpl，TelecomService．这些类混个脸熟