All Downloads are FREE. Search and download functionalities are using the official Maven repository.

android.bluetooth.BluetoothAvrcpController Maven / Gradle / Ivy

Go to download

A library jar that provides APIs for Applications written for the Google Android Platform.

There is a newer version: 14-robolectric-10818077
Show newest version
/*
 * Copyright (C) 2014 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 android.bluetooth;

import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.Log;

import java.util.ArrayList;
import java.util.List;

/**
 * This class provides the public APIs to control the Bluetooth AVRCP Controller
 * profile.
 *
 *

BluetoothAvrcpController is a proxy object for controlling the Bluetooth AVRCP * Service via IPC. Use {@link BluetoothAdapter#getProfileProxy} to get * the BluetoothAvrcpController proxy object. * * {@hide} */ public final class BluetoothAvrcpController implements BluetoothProfile { private static final String TAG = "BluetoothAvrcpController"; private static final boolean DBG = true; private static final boolean VDBG = false; /** * Intent used to broadcast the change in connection state of the AVRCP Controller * profile. * *

This intent will have 3 extras: *

    *
  • {@link #EXTRA_STATE} - The current state of the profile.
  • *
  • {@link #EXTRA_PREVIOUS_STATE}- The previous state of the profile.
  • *
  • {@link BluetoothDevice#EXTRA_DEVICE} - The remote device.
  • *
* *

{@link #EXTRA_STATE} or {@link #EXTRA_PREVIOUS_STATE} can be any of * {@link #STATE_DISCONNECTED}, {@link #STATE_CONNECTING}, * {@link #STATE_CONNECTED}, {@link #STATE_DISCONNECTING}. * *

Requires {@link android.Manifest.permission#BLUETOOTH} permission to * receive. */ public static final String ACTION_CONNECTION_STATE_CHANGED = "android.bluetooth.acrcp-controller.profile.action.CONNECTION_STATE_CHANGED"; private Context mContext; private ServiceListener mServiceListener; private IBluetoothAvrcpController mService; private BluetoothAdapter mAdapter; final private IBluetoothStateChangeCallback mBluetoothStateChangeCallback = new IBluetoothStateChangeCallback.Stub() { public void onBluetoothStateChange(boolean up) { if (DBG) Log.d(TAG, "onBluetoothStateChange: up=" + up); if (!up) { if (VDBG) Log.d(TAG,"Unbinding service..."); synchronized (mConnection) { try { mService = null; mContext.unbindService(mConnection); } catch (Exception re) { Log.e(TAG,"",re); } } } else { synchronized (mConnection) { try { if (mService == null) { if (VDBG) Log.d(TAG,"Binding service..."); doBind(); } } catch (Exception re) { Log.e(TAG,"",re); } } } } }; /** * Create a BluetoothAvrcpController proxy object for interacting with the local * Bluetooth AVRCP service. * */ /*package*/ BluetoothAvrcpController(Context context, ServiceListener l) { mContext = context; mServiceListener = l; mAdapter = BluetoothAdapter.getDefaultAdapter(); IBluetoothManager mgr = mAdapter.getBluetoothManager(); if (mgr != null) { try { mgr.registerStateChangeCallback(mBluetoothStateChangeCallback); } catch (RemoteException e) { Log.e(TAG,"",e); } } doBind(); } boolean doBind() { Intent intent = new Intent(IBluetoothAvrcpController.class.getName()); ComponentName comp = intent.resolveSystemService(mContext.getPackageManager(), 0); intent.setComponent(comp); if (comp == null || !mContext.bindServiceAsUser(intent, mConnection, 0, android.os.Process.myUserHandle())) { Log.e(TAG, "Could not bind to Bluetooth AVRCP Controller Service with " + intent); return false; } return true; } /*package*/ void close() { mServiceListener = null; IBluetoothManager mgr = mAdapter.getBluetoothManager(); if (mgr != null) { try { mgr.unregisterStateChangeCallback(mBluetoothStateChangeCallback); } catch (Exception e) { Log.e(TAG,"",e); } } synchronized (mConnection) { if (mService != null) { try { mService = null; mContext.unbindService(mConnection); } catch (Exception re) { Log.e(TAG,"",re); } } } } public void finalize() { close(); } /** * {@inheritDoc} */ public List getConnectedDevices() { if (VDBG) log("getConnectedDevices()"); if (mService != null && isEnabled()) { try { return mService.getConnectedDevices(); } catch (RemoteException e) { Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); return new ArrayList(); } } if (mService == null) Log.w(TAG, "Proxy not attached to service"); return new ArrayList(); } /** * {@inheritDoc} */ public List getDevicesMatchingConnectionStates(int[] states) { if (VDBG) log("getDevicesMatchingStates()"); if (mService != null && isEnabled()) { try { return mService.getDevicesMatchingConnectionStates(states); } catch (RemoteException e) { Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); return new ArrayList(); } } if (mService == null) Log.w(TAG, "Proxy not attached to service"); return new ArrayList(); } /** * {@inheritDoc} */ public int getConnectionState(BluetoothDevice device) { if (VDBG) log("getState(" + device + ")"); if (mService != null && isEnabled() && isValidDevice(device)) { try { return mService.getConnectionState(device); } catch (RemoteException e) { Log.e(TAG, "Stack:" + Log.getStackTraceString(new Throwable())); return BluetoothProfile.STATE_DISCONNECTED; } } if (mService == null) Log.w(TAG, "Proxy not attached to service"); return BluetoothProfile.STATE_DISCONNECTED; } public void sendPassThroughCmd(BluetoothDevice device, int keyCode, int keyState) { if (DBG) Log.d(TAG, "sendPassThroughCmd"); if (mService != null && isEnabled()) { try { mService.sendPassThroughCmd(device, keyCode, keyState); return; } catch (RemoteException e) { Log.e(TAG, "Error talking to BT service in sendPassThroughCmd()", e); return; } } if (mService == null) Log.w(TAG, "Proxy not attached to service"); } private final ServiceConnection mConnection = new ServiceConnection() { public void onServiceConnected(ComponentName className, IBinder service) { if (DBG) Log.d(TAG, "Proxy object connected"); mService = IBluetoothAvrcpController.Stub.asInterface(service); if (mServiceListener != null) { mServiceListener.onServiceConnected(BluetoothProfile.AVRCP_CONTROLLER, BluetoothAvrcpController.this); } } public void onServiceDisconnected(ComponentName className) { if (DBG) Log.d(TAG, "Proxy object disconnected"); mService = null; if (mServiceListener != null) { mServiceListener.onServiceDisconnected(BluetoothProfile.AVRCP_CONTROLLER); } } }; private boolean isEnabled() { if (mAdapter.getState() == BluetoothAdapter.STATE_ON) return true; return false; } private boolean isValidDevice(BluetoothDevice device) { if (device == null) return false; if (BluetoothAdapter.checkBluetoothAddress(device.getAddress())) return true; return false; } private static void log(String msg) { Log.d(TAG, msg); } }





© 2015 - 2024 Weber Informatics LLC | Privacy Policy