| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.car.dialer.livedata; |
| |
| import android.bluetooth.BluetoothAdapter; |
| import android.bluetooth.BluetoothHeadsetClient; |
| import android.bluetooth.BluetoothProfile; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| |
| import com.android.car.dialer.log.L; |
| |
| import androidx.lifecycle.LiveData; |
| |
| /** |
| * Provides the connectivity state of HFP Bluetooth profile. States can be one of: |
| * <ul> |
| * <li>{@link BluetoothProfile#STATE_DISCONNECTED}, |
| * <li>{@link BluetoothProfile#STATE_CONNECTING}, |
| * <li>{@link BluetoothProfile#STATE_CONNECTED}, |
| * <li>{@link BluetoothProfile#STATE_DISCONNECTING} |
| * </ul> |
| */ |
| public class BluetoothHfpStateLiveData extends LiveData<Integer> { |
| private static final String TAG = "CD.BluetoothHfpStateLiveData"; |
| |
| private final BluetoothAdapter mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); |
| private final Context mContext; |
| private final IntentFilter mIntentFilter = new IntentFilter(); |
| |
| private BroadcastReceiver mBluetoothStateReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| updateState(); |
| } |
| }; |
| |
| /** Creates a new {@link BluetoothHfpStateLiveData}. Call on main thread. */ |
| public BluetoothHfpStateLiveData(Context context) { |
| mContext = context; |
| mIntentFilter.addAction(BluetoothHeadsetClient.ACTION_CONNECTION_STATE_CHANGED); |
| } |
| |
| @Override |
| protected void onActive() { |
| if (mBluetoothAdapter != null) { |
| updateState(); |
| mContext.registerReceiver(mBluetoothStateReceiver, mIntentFilter); |
| } |
| } |
| |
| @Override |
| protected void onInactive() { |
| if (mBluetoothAdapter != null) { |
| mContext.unregisterReceiver(mBluetoothStateReceiver); |
| } |
| } |
| |
| private void updateState() { |
| int state = mBluetoothAdapter.getProfileConnectionState( |
| BluetoothProfile.HEADSET_CLIENT); |
| if (getValue() == null || state != getValue()) { |
| L.d(TAG, "updateState to %s", state); |
| setValue(state); |
| } |
| } |
| } |