blob: 4fa8fe96a6a9ea03832acbeea39c49a063b87f5a [file] [log] [blame]
/*
* 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.telecom;
import android.Manifest;
import android.annotation.RequiresPermission;
import android.annotation.SystemApi;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.telephony.TelephonyManager;
import android.text.TextUtils;
import android.util.Log;
import com.android.internal.telecom.ITelecomService;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* Provides access to information about active calls and registration/call-management functionality.
* Apps can use methods in this class to determine the current call state.
* <p>
* Apps do not instantiate this class directly; instead, they retrieve a reference to an instance
* through {@link Context#getSystemService Context.getSystemService(Context.TELECOM_SERVICE)}.
* <p>
* Note that access to some telecom information is permission-protected. Your app cannot access the
* protected information or gain access to protected functionality unless it has the appropriate
* permissions declared in its manifest file. Where permissions apply, they are noted in the method
* descriptions.
*/
public class TelecomManager {
/**
* Activity action: Starts the UI for handing an incoming call. This intent starts the in-call
* UI by notifying the Telecom system that an incoming call exists for a specific call service
* (see {@link android.telecom.ConnectionService}). Telecom reads the Intent extras to find
* and bind to the appropriate {@link android.telecom.ConnectionService} which Telecom will
* ultimately use to control and get information about the call.
* <p>
* Input: get*Extra field {@link #EXTRA_PHONE_ACCOUNT_HANDLE} contains the component name of the
* {@link android.telecom.ConnectionService} that Telecom should bind to. Telecom will then
* ask the connection service for more information about the call prior to showing any UI.
*/
public static final String ACTION_INCOMING_CALL = "android.telecom.action.INCOMING_CALL";
/**
* Similar to {@link #ACTION_INCOMING_CALL}, but is used only by Telephony to add a new
* sim-initiated MO call for carrier testing.
* @hide
*/
public static final String ACTION_NEW_UNKNOWN_CALL = "android.telecom.action.NEW_UNKNOWN_CALL";
/**
* An {@link android.content.Intent} action sent by the telecom framework to start a
* configuration dialog for a registered {@link PhoneAccount}. There is no default dialog
* and each app that registers a {@link PhoneAccount} should provide one if desired.
* <p>
* A user can access the list of enabled {@link android.telecom.PhoneAccount}s through the Phone
* app's settings menu. For each entry, the settings app will add a click action. When
* triggered, the click-action will start this intent along with the extra
* {@link #EXTRA_PHONE_ACCOUNT_HANDLE} to indicate the {@link PhoneAccount} to configure. If the
* {@link PhoneAccount} package does not register an {@link android.app.Activity} for this
* intent, then it will not be sent.
*/
public static final String ACTION_CONFIGURE_PHONE_ACCOUNT =
"android.telecom.action.CONFIGURE_PHONE_ACCOUNT";
/**
* The {@link android.content.Intent} action used to show the call accessibility settings page.
*/
public static final String ACTION_SHOW_CALL_ACCESSIBILITY_SETTINGS =
"android.telecom.action.SHOW_CALL_ACCESSIBILITY_SETTINGS";
/**
* The {@link android.content.Intent} action used to show the call settings page.
*/
public static final String ACTION_SHOW_CALL_SETTINGS =
"android.telecom.action.SHOW_CALL_SETTINGS";
/**
* The {@link android.content.Intent} action used to show the respond via SMS settings page.
*/
public static final String ACTION_SHOW_RESPOND_VIA_SMS_SETTINGS =
"android.telecom.action.SHOW_RESPOND_VIA_SMS_SETTINGS";
/**
* The {@link android.content.Intent} action used to show the settings page used to configure
* {@link PhoneAccount} preferences.
*/
public static final String ACTION_CHANGE_PHONE_ACCOUNTS =
"android.telecom.action.CHANGE_PHONE_ACCOUNTS";
/**
* The {@link android.content.Intent} action used indicate that a new phone account was
* just registered.
* @hide
*/
@SystemApi
public static final String ACTION_PHONE_ACCOUNT_REGISTERED =
"android.telecom.action.PHONE_ACCOUNT_REGISTERED";
/**
* The {@link android.content.Intent} action used indicate that a phone account was
* just unregistered.
* @hide
*/
@SystemApi
public static final String ACTION_PHONE_ACCOUNT_UNREGISTERED =
"android.telecom.action.PHONE_ACCOUNT_UNREGISTERED";
/**
* Activity action: Shows a dialog asking the user whether or not they want to replace the
* current default Dialer with the one specified in
* {@link #EXTRA_CHANGE_DEFAULT_DIALER_PACKAGE_NAME}.
*
* Usage example:
* <pre>
* Intent intent = new Intent(TelecomManager.ACTION_CHANGE_DEFAULT_DIALER);
* intent.putExtra(TelecomManager.EXTRA_CHANGE_DEFAULT_DIALER_PACKAGE_NAME,
* getActivity().getPackageName());
* startActivity(intent);
* </pre>
*/
public static final String ACTION_CHANGE_DEFAULT_DIALER =
"android.telecom.action.CHANGE_DEFAULT_DIALER";
/**
* Broadcast intent action indicating that the current default dialer has changed.
* The string extra {@link #EXTRA_CHANGE_DEFAULT_DIALER_PACKAGE_NAME} will contain the
* name of the package that the default dialer was changed to.
*
* @see #EXTRA_CHANGE_DEFAULT_DIALER_PACKAGE_NAME
*/
public static final String ACTION_DEFAULT_DIALER_CHANGED =
"android.telecom.action.DEFAULT_DIALER_CHANGED";
/**
* Extra value used to provide the package name for {@link #ACTION_CHANGE_DEFAULT_DIALER}.
*/
public static final String EXTRA_CHANGE_DEFAULT_DIALER_PACKAGE_NAME =
"android.telecom.extra.CHANGE_DEFAULT_DIALER_PACKAGE_NAME";
/**
* Optional extra for {@link android.content.Intent#ACTION_CALL} containing a boolean that
* determines whether the speakerphone should be automatically turned on for an outgoing call.
*/
public static final String EXTRA_START_CALL_WITH_SPEAKERPHONE =
"android.telecom.extra.START_CALL_WITH_SPEAKERPHONE";
/**
* Optional extra for {@link android.content.Intent#ACTION_CALL} containing an integer that
* determines the desired video state for an outgoing call.
* Valid options:
* {@link VideoProfile#STATE_AUDIO_ONLY},
* {@link VideoProfile#STATE_BIDIRECTIONAL},
* {@link VideoProfile#STATE_RX_ENABLED},
* {@link VideoProfile#STATE_TX_ENABLED}.
*/
public static final String EXTRA_START_CALL_WITH_VIDEO_STATE =
"android.telecom.extra.START_CALL_WITH_VIDEO_STATE";
/**
* The extra used with an {@link android.content.Intent#ACTION_CALL} and
* {@link android.content.Intent#ACTION_DIAL} {@code Intent} to specify a
* {@link PhoneAccountHandle} to use when making the call.
* <p class="note">
* Retrieve with {@link android.content.Intent#getParcelableExtra(String)}.
*/
public static final String EXTRA_PHONE_ACCOUNT_HANDLE =
"android.telecom.extra.PHONE_ACCOUNT_HANDLE";
/**
* Optional extra for {@link android.content.Intent#ACTION_CALL} containing a string call
* subject which will be associated with an outgoing call. Should only be specified if the
* {@link PhoneAccount} supports the capability {@link PhoneAccount#CAPABILITY_CALL_SUBJECT}.
*/
public static final String EXTRA_CALL_SUBJECT = "android.telecom.extra.CALL_SUBJECT";
/**
* The extra used by a {@link ConnectionService} to provide the handle of the caller that
* has initiated a new incoming call.
*/
public static final String EXTRA_INCOMING_CALL_ADDRESS =
"android.telecom.extra.INCOMING_CALL_ADDRESS";
/**
* Optional extra for {@link #ACTION_INCOMING_CALL} containing a {@link Bundle} which contains
* metadata about the call. This {@link Bundle} will be returned to the
* {@link ConnectionService}.
*/
public static final String EXTRA_INCOMING_CALL_EXTRAS =
"android.telecom.extra.INCOMING_CALL_EXTRAS";
/**
* Optional extra for {@link android.content.Intent#ACTION_CALL} and
* {@link android.content.Intent#ACTION_DIAL} {@code Intent} containing a {@link Bundle}
* which contains metadata about the call. This {@link Bundle} will be saved into
* {@code Call.Details} and passed to the {@link ConnectionService} when placing the call.
*/
public static final String EXTRA_OUTGOING_CALL_EXTRAS =
"android.telecom.extra.OUTGOING_CALL_EXTRAS";
/**
* @hide
*/
public static final String EXTRA_UNKNOWN_CALL_HANDLE =
"android.telecom.extra.UNKNOWN_CALL_HANDLE";
/**
* Optional extra for {@link android.telephony.TelephonyManager#ACTION_PHONE_STATE_CHANGED}
* containing the disconnect code.
*/
public static final String EXTRA_CALL_DISCONNECT_CAUSE =
"android.telecom.extra.CALL_DISCONNECT_CAUSE";
/**
* Optional extra for {@link android.telephony.TelephonyManager#ACTION_PHONE_STATE_CHANGED}
* containing the disconnect message.
*/
public static final String EXTRA_CALL_DISCONNECT_MESSAGE =
"android.telecom.extra.CALL_DISCONNECT_MESSAGE";
/**
* Optional extra for {@link android.telephony.TelephonyManager#ACTION_PHONE_STATE_CHANGED}
* containing the component name of the associated connection service.
* @hide
*/
@SystemApi
public static final String EXTRA_CONNECTION_SERVICE =
"android.telecom.extra.CONNECTION_SERVICE";
/**
* Optional extra for communicating the call technology used by a
* {@link com.android.internal.telephony.Connection} to Telecom
* @hide
*/
public static final String EXTRA_CALL_TECHNOLOGY_TYPE =
"android.telecom.extra.CALL_TECHNOLOGY_TYPE";
/**
* An optional {@link android.content.Intent#ACTION_CALL} intent extra denoting the
* package name of the app specifying an alternative gateway for the call.
* The value is a string.
*
* (The following comment corresponds to the all GATEWAY_* extras)
* An app which sends the {@link android.content.Intent#ACTION_CALL} intent can specify an
* alternative address to dial which is different from the one specified and displayed to
* the user. This alternative address is referred to as the gateway address.
*/
public static final String GATEWAY_PROVIDER_PACKAGE =
"android.telecom.extra.GATEWAY_PROVIDER_PACKAGE";
/**
* An optional {@link android.content.Intent#ACTION_CALL} intent extra corresponding to the
* original address to dial for the call. This is used when an alternative gateway address is
* provided to recall the original address.
* The value is a {@link android.net.Uri}.
*
* (See {@link #GATEWAY_PROVIDER_PACKAGE} for details)
*/
public static final String GATEWAY_ORIGINAL_ADDRESS =
"android.telecom.extra.GATEWAY_ORIGINAL_ADDRESS";
/**
* The number which the party on the other side of the line will see (and use to return the
* call).
* <p>
* {@link ConnectionService}s which interact with {@link RemoteConnection}s should only populate
* this if the {@link android.telephony.TelephonyManager#getLine1Number()} value, as that is the
* user's expected caller ID.
*/
public static final String EXTRA_CALL_BACK_NUMBER = "android.telecom.extra.CALL_BACK_NUMBER";
/**
* A boolean meta-data value indicating whether an {@link InCallService} implements an
* in-call user interface. Dialer implementations (see {@link #getDefaultDialerPackage()}) which
* would also like to replace the in-call interface should set this meta-data to {@code true} in
* the manifest registration of their {@link InCallService}.
*/
public static final String METADATA_IN_CALL_SERVICE_UI = "android.telecom.IN_CALL_SERVICE_UI";
/**
* A boolean meta-data value indicating whether an {@link InCallService} implements an
* in-call user interface to be used while the device is in car-mode (see
* {@link android.content.res.Configuration.UI_MODE_TYPE_CAR}).
*
* @hide
*/
public static final String METADATA_IN_CALL_SERVICE_CAR_MODE_UI =
"android.telecom.IN_CALL_SERVICE_CAR_MODE_UI";
/**
* A boolean meta-data value indicating whether an {@link InCallService} implements ringing.
* Dialer implementations (see {@link #getDefaultDialerPackage()}) which would also like to
* override the system provided ringing should set this meta-data to {@code true} in the
* manifest registration of their {@link InCallService}.
*/
public static final String METADATA_IN_CALL_SERVICE_RINGING =
"android.telecom.IN_CALL_SERVICE_RINGING";
/**
* A boolean meta-data value indicating whether an {@link InCallService} wants to be informed of
* calls which have the {@link Call.Details#PROPERTY_IS_EXTERNAL_CALL} property. An external
* call is one which a {@link ConnectionService} knows about, but is not connected to directly.
* Dialer implementations (see {@link #getDefaultDialerPackage()}) which would like to be
* informed of external calls should set this meta-data to {@code true} in the manifest
* registration of their {@link InCallService}. By default, the {@link InCallService} will NOT
* be informed of external calls.
*/
public static final String METADATA_INCLUDE_EXTERNAL_CALLS =
"android.telecom.INCLUDE_EXTERNAL_CALLS";
/**
* The dual tone multi-frequency signaling character sent to indicate the dialing system should
* pause for a predefined period.
*/
public static final char DTMF_CHARACTER_PAUSE = ',';
/**
* The dual-tone multi-frequency signaling character sent to indicate the dialing system should
* wait for user confirmation before proceeding.
*/
public static final char DTMF_CHARACTER_WAIT = ';';
/**
* TTY (teletypewriter) mode is off.
*
* @hide
*/
public static final int TTY_MODE_OFF = 0;
/**
* TTY (teletypewriter) mode is on. The speaker is off and the microphone is muted. The user
* will communicate with the remote party by sending and receiving text messages.
*
* @hide
*/
public static final int TTY_MODE_FULL = 1;
/**
* TTY (teletypewriter) mode is in hearing carryover mode (HCO). The microphone is muted but the
* speaker is on. The user will communicate with the remote party by sending text messages and
* hearing an audible reply.
*
* @hide
*/
public static final int TTY_MODE_HCO = 2;
/**
* TTY (teletypewriter) mode is in voice carryover mode (VCO). The speaker is off but the
* microphone is still on. User will communicate with the remote party by speaking and receiving
* text message replies.
*
* @hide
*/
public static final int TTY_MODE_VCO = 3;
/**
* Broadcast intent action indicating that the current TTY mode has changed. An intent extra
* provides this state as an int.
*
* @see #EXTRA_CURRENT_TTY_MODE
* @hide
*/
public static final String ACTION_CURRENT_TTY_MODE_CHANGED =
"android.telecom.action.CURRENT_TTY_MODE_CHANGED";
/**
* The lookup key for an int that indicates the current TTY mode.
* Valid modes are:
* - {@link #TTY_MODE_OFF}
* - {@link #TTY_MODE_FULL}
* - {@link #TTY_MODE_HCO}
* - {@link #TTY_MODE_VCO}
*
* @hide
*/
public static final String EXTRA_CURRENT_TTY_MODE =
"android.telecom.intent.extra.CURRENT_TTY_MODE";
/**
* Broadcast intent action indicating that the TTY preferred operating mode has changed. An
* intent extra provides the new mode as an int.
*
* @see #EXTRA_TTY_PREFERRED_MODE
* @hide
*/
public static final String ACTION_TTY_PREFERRED_MODE_CHANGED =
"android.telecom.action.TTY_PREFERRED_MODE_CHANGED";
/**
* The lookup key for an int that indicates preferred TTY mode. Valid modes are: -
* {@link #TTY_MODE_OFF} - {@link #TTY_MODE_FULL} - {@link #TTY_MODE_HCO} -
* {@link #TTY_MODE_VCO}
*
* @hide
*/
public static final String EXTRA_TTY_PREFERRED_MODE =
"android.telecom.intent.extra.TTY_PREFERRED";
/**
* Broadcast intent action for letting custom component know to show the missed call
* notification. If no custom component exists then this is sent to the default dialer which
* should post a missed-call notification.
*/
public static final String ACTION_SHOW_MISSED_CALLS_NOTIFICATION =
"android.telecom.action.SHOW_MISSED_CALLS_NOTIFICATION";
/**
* The number of calls associated with the notification. If the number is zero then the missed
* call notification should be dismissed.
*/
public static final String EXTRA_NOTIFICATION_COUNT =
"android.telecom.extra.NOTIFICATION_COUNT";
/**
* The number associated with the missed calls. This number is only relevant
* when EXTRA_NOTIFICATION_COUNT is 1.
*/
public static final String EXTRA_NOTIFICATION_PHONE_NUMBER =
"android.telecom.extra.NOTIFICATION_PHONE_NUMBER";
/**
* The intent to clear missed calls.
* @hide
*/
@SystemApi
public static final String EXTRA_CLEAR_MISSED_CALLS_INTENT =
"android.telecom.extra.CLEAR_MISSED_CALLS_INTENT";
/**
* The intent to call back a missed call.
* @hide
*/
@SystemApi
public static final String EXTRA_CALL_BACK_INTENT =
"android.telecom.extra.CALL_BACK_INTENT";
/**
* The following 4 constants define how properties such as phone numbers and names are
* displayed to the user.
*/
/**
* Indicates that the address or number of a call is allowed to be displayed for caller ID.
*/
public static final int PRESENTATION_ALLOWED = 1;
/**
* Indicates that the address or number of a call is blocked by the other party.
*/
public static final int PRESENTATION_RESTRICTED = 2;
/**
* Indicates that the address or number of a call is not specified or known by the carrier.
*/
public static final int PRESENTATION_UNKNOWN = 3;
/**
* Indicates that the address or number of a call belongs to a pay phone.
*/
public static final int PRESENTATION_PAYPHONE = 4;
private static final String TAG = "TelecomManager";
private final Context mContext;
private final ITelecomService mTelecomServiceOverride;
/**
* @hide
*/
public static TelecomManager from(Context context) {
return (TelecomManager) context.getSystemService(Context.TELECOM_SERVICE);
}
/**
* @hide
*/
public TelecomManager(Context context) {
this(context, null);
}
/**
* @hide
*/
public TelecomManager(Context context, ITelecomService telecomServiceImpl) {
Context appContext = context.getApplicationContext();
if (appContext != null) {
mContext = appContext;
} else {
mContext = context;
}
mTelecomServiceOverride = telecomServiceImpl;
android.telecom.Log.initMd5Sum();
}
/**
* Return the {@link PhoneAccount} which will be used to place outgoing calls to addresses with
* the specified {@code uriScheme}. This {@link PhoneAccount} will always be a member of the
* list which is returned from invoking {@link #getCallCapablePhoneAccounts()}. The specific
* account returned depends on the following priorities:
* <ul>
* <li> If the user-selected default {@link PhoneAccount} supports the specified scheme, it will
* be returned.
* </li>
* <li> If there exists only one {@link PhoneAccount} that supports the specified scheme, it
* will be returned.
* </li>
* </ul>
* <p>
* If no {@link PhoneAccount} fits the criteria above, this method will return {@code null}.
*
* Requires permission: {@link android.Manifest.permission#READ_PHONE_STATE}
*
* @param uriScheme The URI scheme.
* @return The {@link PhoneAccountHandle} corresponding to the account to be used.
*/
@RequiresPermission(android.Manifest.permission.READ_PHONE_STATE)
public PhoneAccountHandle getDefaultOutgoingPhoneAccount(String uriScheme) {
try {
if (isServiceConnected()) {
return getTelecomService().getDefaultOutgoingPhoneAccount(uriScheme,
mContext.getOpPackageName());
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#getDefaultOutgoingPhoneAccount", e);
}
return null;
}
/**
* Return the {@link PhoneAccount} which is the user-chosen default for making outgoing phone
* calls. This {@code PhoneAccount} will always be a member of the list which is returned from
* calling {@link #getCallCapablePhoneAccounts()}
* <p>
* Apps must be prepared for this method to return {@code null}, indicating that there currently
* exists no user-chosen default {@code PhoneAccount}.
*
* @return The user outgoing phone account selected by the user.
* @hide
*/
public PhoneAccountHandle getUserSelectedOutgoingPhoneAccount() {
try {
if (isServiceConnected()) {
return getTelecomService().getUserSelectedOutgoingPhoneAccount();
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#getUserSelectedOutgoingPhoneAccount", e);
}
return null;
}
/**
* Sets the user-chosen default for making outgoing phone calls.
* @hide
*/
public void setUserSelectedOutgoingPhoneAccount(PhoneAccountHandle accountHandle) {
try {
if (isServiceConnected()) {
getTelecomService().setUserSelectedOutgoingPhoneAccount(accountHandle);
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#setUserSelectedOutgoingPhoneAccount");
}
}
/**
* Returns the current SIM call manager. Apps must be prepared for this method to return
* {@code null}, indicating that there currently exists no user-chosen default
* {@code PhoneAccount}.
*
* @return The phone account handle of the current sim call manager.
*/
public PhoneAccountHandle getSimCallManager() {
try {
if (isServiceConnected()) {
return getTelecomService().getSimCallManager();
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#getSimCallManager");
}
return null;
}
/**
* Returns the current SIM call manager for the specified user. Apps must be prepared for this
* method to return {@code null}, indicating that there currently exists no user-chosen default
* {@code PhoneAccount}.
*
* @return The phone account handle of the current sim call manager.
*
* @hide
*/
public PhoneAccountHandle getSimCallManager(int userId) {
try {
if (isServiceConnected()) {
return getTelecomService().getSimCallManagerForUser(userId);
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#getSimCallManagerForUser");
}
return null;
}
/**
* Returns the current connection manager. Apps must be prepared for this method to return
* {@code null}, indicating that there currently exists no user-chosen default
* {@code PhoneAccount}.
*
* @return The phone account handle of the current connection manager.
* @hide
*/
@SystemApi
public PhoneAccountHandle getConnectionManager() {
return getSimCallManager();
}
/**
* Returns a list of the {@link PhoneAccountHandle}s which can be used to make and receive phone
* calls which support the specified URI scheme.
* <P>
* For example, invoking with {@code "tel"} will find all {@link PhoneAccountHandle}s which
* support telephone calls (e.g. URIs such as {@code tel:555-555-1212}). Invoking with
* {@code "sip"} will find all {@link PhoneAccountHandle}s which support SIP calls (e.g. URIs
* such as {@code sip:example@sipexample.com}).
*
* @param uriScheme The URI scheme.
* @return A list of {@code PhoneAccountHandle} objects supporting the URI scheme.
* @hide
*/
@SystemApi
public List<PhoneAccountHandle> getPhoneAccountsSupportingScheme(String uriScheme) {
try {
if (isServiceConnected()) {
return getTelecomService().getPhoneAccountsSupportingScheme(uriScheme,
mContext.getOpPackageName());
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#getPhoneAccountsSupportingScheme", e);
}
return new ArrayList<>();
}
/**
* Returns a list of {@link PhoneAccountHandle}s which can be used to make and receive phone
* calls. The returned list includes only those accounts which have been explicitly enabled
* by the user.
*
* Requires permission: {@link android.Manifest.permission#READ_PHONE_STATE}
*
* @see #EXTRA_PHONE_ACCOUNT_HANDLE
* @return A list of {@code PhoneAccountHandle} objects.
*/
@RequiresPermission(android.Manifest.permission.READ_PHONE_STATE)
public List<PhoneAccountHandle> getCallCapablePhoneAccounts() {
return getCallCapablePhoneAccounts(false);
}
/**
* Returns a list of {@link PhoneAccountHandle}s including those which have not been enabled
* by the user.
*
* @return A list of {@code PhoneAccountHandle} objects.
* @hide
*/
public List<PhoneAccountHandle> getCallCapablePhoneAccounts(boolean includeDisabledAccounts) {
try {
if (isServiceConnected()) {
return getTelecomService().getCallCapablePhoneAccounts(
includeDisabledAccounts, mContext.getOpPackageName());
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#getCallCapablePhoneAccounts(" +
includeDisabledAccounts + ")", e);
}
return new ArrayList<>();
}
/**
* Returns a list of all {@link PhoneAccount}s registered for the calling package.
*
* @return A list of {@code PhoneAccountHandle} objects.
* @hide
*/
@SystemApi
public List<PhoneAccountHandle> getPhoneAccountsForPackage() {
try {
if (isServiceConnected()) {
return getTelecomService().getPhoneAccountsForPackage(mContext.getPackageName());
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#getPhoneAccountsForPackage", e);
}
return null;
}
/**
* Return the {@link PhoneAccount} for a specified {@link PhoneAccountHandle}. Object includes
* resources which can be used in a user interface.
*
* @param account The {@link PhoneAccountHandle}.
* @return The {@link PhoneAccount} object.
*/
public PhoneAccount getPhoneAccount(PhoneAccountHandle account) {
try {
if (isServiceConnected()) {
return getTelecomService().getPhoneAccount(account);
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#getPhoneAccount", e);
}
return null;
}
/**
* Returns a count of all {@link PhoneAccount}s.
*
* @return The count of {@link PhoneAccount}s.
* @hide
*/
@SystemApi
public int getAllPhoneAccountsCount() {
try {
if (isServiceConnected()) {
return getTelecomService().getAllPhoneAccountsCount();
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#getAllPhoneAccountsCount", e);
}
return 0;
}
/**
* Returns a list of all {@link PhoneAccount}s.
*
* @return All {@link PhoneAccount}s.
* @hide
*/
@SystemApi
public List<PhoneAccount> getAllPhoneAccounts() {
try {
if (isServiceConnected()) {
return getTelecomService().getAllPhoneAccounts();
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#getAllPhoneAccounts", e);
}
return Collections.EMPTY_LIST;
}
/**
* Returns a list of all {@link PhoneAccountHandle}s.
*
* @return All {@link PhoneAccountHandle}s.
* @hide
*/
@SystemApi
public List<PhoneAccountHandle> getAllPhoneAccountHandles() {
try {
if (isServiceConnected()) {
return getTelecomService().getAllPhoneAccountHandles();
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#getAllPhoneAccountHandles", e);
}
return Collections.EMPTY_LIST;
}
/**
* Register a {@link PhoneAccount} for use by the system that will be stored in Device Encrypted
* storage. When registering {@link PhoneAccount}s, existing registrations will be overwritten
* if the {@link PhoneAccountHandle} matches that of a {@link PhoneAccount} which is already
* registered. Once registered, the {@link PhoneAccount} is listed to the user as an option
* when placing calls. The user may still need to enable the {@link PhoneAccount} within
* the phone app settings before the account is usable.
* <p>
* A {@link SecurityException} will be thrown if an app tries to register a
* {@link PhoneAccountHandle} where the package name specified within
* {@link PhoneAccountHandle#getComponentName()} does not match the package name of the app.
*
* @param account The complete {@link PhoneAccount}.
*/
public void registerPhoneAccount(PhoneAccount account) {
try {
if (isServiceConnected()) {
getTelecomService().registerPhoneAccount(account);
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#registerPhoneAccount", e);
}
}
/**
* Remove a {@link PhoneAccount} registration from the system.
*
* @param accountHandle A {@link PhoneAccountHandle} for the {@link PhoneAccount} to unregister.
*/
public void unregisterPhoneAccount(PhoneAccountHandle accountHandle) {
try {
if (isServiceConnected()) {
getTelecomService().unregisterPhoneAccount(accountHandle);
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#unregisterPhoneAccount", e);
}
}
/**
* Remove all Accounts that belong to the calling package from the system.
* @hide
*/
@SystemApi
public void clearPhoneAccounts() {
clearAccounts();
}
/**
* Remove all Accounts that belong to the calling package from the system.
* @deprecated Use {@link #clearPhoneAccounts()} instead.
* @hide
*/
@SystemApi
public void clearAccounts() {
try {
if (isServiceConnected()) {
getTelecomService().clearAccounts(mContext.getPackageName());
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#clearAccounts", e);
}
}
/**
* Remove all Accounts that belong to the specified package from the system.
* @hide
*/
public void clearAccountsForPackage(String packageName) {
try {
if (isServiceConnected() && !TextUtils.isEmpty(packageName)) {
getTelecomService().clearAccounts(packageName);
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#clearAccountsForPackage", e);
}
}
/**
* @deprecated - Use {@link TelecomManager#getDefaultDialerPackage} to directly access
* the default dialer's package name instead.
* @hide
*/
@SystemApi
public ComponentName getDefaultPhoneApp() {
try {
if (isServiceConnected()) {
return getTelecomService().getDefaultPhoneApp();
}
} catch (RemoteException e) {
Log.e(TAG, "RemoteException attempting to get the default phone app.", e);
}
return null;
}
/**
* Used to determine the currently selected default dialer package.
*
* @return package name for the default dialer package or null if no package has been
* selected as the default dialer.
*/
public String getDefaultDialerPackage() {
try {
if (isServiceConnected()) {
return getTelecomService().getDefaultDialerPackage();
}
} catch (RemoteException e) {
Log.e(TAG, "RemoteException attempting to get the default dialer package name.", e);
}
return null;
}
/**
* Used to set the default dialer package.
*
* @param packageName to set the default dialer to..
*
* @result {@code true} if the default dialer was successfully changed, {@code false} if
* the specified package does not correspond to an installed dialer, or is already
* the default dialer.
*
* Requires permission: {@link android.Manifest.permission#MODIFY_PHONE_STATE}
* Requires permission: {@link android.Manifest.permission#WRITE_SECURE_SETTINGS}
*
* @hide
*/
public boolean setDefaultDialer(String packageName) {
try {
if (isServiceConnected()) {
return getTelecomService().setDefaultDialer(packageName);
}
} catch (RemoteException e) {
Log.e(TAG, "RemoteException attempting to set the default dialer.", e);
}
return false;
}
/**
* Used to determine the dialer package that is preloaded on the system partition.
*
* @return package name for the system dialer package or null if no system dialer is preloaded.
* @hide
*/
public String getSystemDialerPackage() {
try {
if (isServiceConnected()) {
return getTelecomService().getSystemDialerPackage();
}
} catch (RemoteException e) {
Log.e(TAG, "RemoteException attempting to get the system dialer package name.", e);
}
return null;
}
/**
* Return whether a given phone number is the configured voicemail number for a
* particular phone account.
*
* Requires permission: {@link android.Manifest.permission#READ_PHONE_STATE}
*
* @param accountHandle The handle for the account to check the voicemail number against
* @param number The number to look up.
*/
@RequiresPermission(android.Manifest.permission.READ_PHONE_STATE)
public boolean isVoiceMailNumber(PhoneAccountHandle accountHandle, String number) {
try {
if (isServiceConnected()) {
return getTelecomService().isVoiceMailNumber(accountHandle, number,
mContext.getOpPackageName());
}
} catch (RemoteException e) {
Log.e(TAG, "RemoteException calling ITelecomService#isVoiceMailNumber.", e);
}
return false;
}
/**
* Return the voicemail number for a given phone account.
*
* Requires permission: {@link android.Manifest.permission#READ_PHONE_STATE}
*
* @param accountHandle The handle for the phone account.
* @return The voicemail number for the phone account, and {@code null} if one has not been
* configured.
*/
@RequiresPermission(android.Manifest.permission.READ_PHONE_STATE)
public String getVoiceMailNumber(PhoneAccountHandle accountHandle) {
try {
if (isServiceConnected()) {
return getTelecomService().getVoiceMailNumber(accountHandle,
mContext.getOpPackageName());
}
} catch (RemoteException e) {
Log.e(TAG, "RemoteException calling ITelecomService#hasVoiceMailNumber.", e);
}
return null;
}
/**
* Return the line 1 phone number for given phone account.
*
* Requires permission: {@link android.Manifest.permission#READ_PHONE_STATE}
*
* @param accountHandle The handle for the account retrieve a number for.
* @return A string representation of the line 1 phone number.
*/
@RequiresPermission(android.Manifest.permission.READ_PHONE_STATE)
public String getLine1Number(PhoneAccountHandle accountHandle) {
try {
if (isServiceConnected()) {
return getTelecomService().getLine1Number(accountHandle,
mContext.getOpPackageName());
}
} catch (RemoteException e) {
Log.e(TAG, "RemoteException calling ITelecomService#getLine1Number.", e);
}
return null;
}
/**
* Returns whether there is an ongoing phone call (can be in dialing, ringing, active or holding
* states).
* <p>
* Requires permission: {@link android.Manifest.permission#READ_PHONE_STATE}
* </p>
*/
@RequiresPermission(android.Manifest.permission.READ_PHONE_STATE)
public boolean isInCall() {
try {
if (isServiceConnected()) {
return getTelecomService().isInCall(mContext.getOpPackageName());
}
} catch (RemoteException e) {
Log.e(TAG, "RemoteException calling isInCall().", e);
}
return false;
}
/**
* Returns one of the following constants that represents the current state of Telecom:
*
* {@link TelephonyManager#CALL_STATE_RINGING}
* {@link TelephonyManager#CALL_STATE_OFFHOOK}
* {@link TelephonyManager#CALL_STATE_IDLE}
*
* Note that this API does not require the
* {@link android.Manifest.permission#READ_PHONE_STATE} permission. This is intentional, to
* preserve the behavior of {@link TelephonyManager#getCallState()}, which also did not require
* the permission.
* @hide
*/
@SystemApi
public int getCallState() {
try {
if (isServiceConnected()) {
return getTelecomService().getCallState();
}
} catch (RemoteException e) {
Log.d(TAG, "RemoteException calling getCallState().", e);
}
return TelephonyManager.CALL_STATE_IDLE;
}
/**
* Returns whether there currently exists is a ringing incoming-call.
*
* @hide
*/
@SystemApi
public boolean isRinging() {
try {
if (isServiceConnected()) {
return getTelecomService().isRinging(mContext.getOpPackageName());
}
} catch (RemoteException e) {
Log.e(TAG, "RemoteException attempting to get ringing state of phone app.", e);
}
return false;
}
/**
* Ends an ongoing call.
* TODO: L-release - need to convert all invocations of ITelecomService#endCall to use this
* method (clockwork & gearhead).
* @hide
*/
@SystemApi
public boolean endCall() {
try {
if (isServiceConnected()) {
return getTelecomService().endCall();
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#endCall", e);
}
return false;
}
/**
* If there is a ringing incoming call, this method accepts the call on behalf of the user.
* TODO: L-release - need to convert all invocation of ITelecmmService#answerRingingCall to use
* this method (clockwork & gearhead).
* If the incoming call is a video call, the call will be answered with the same video state as
* the incoming call requests. This means, for example, that an incoming call requesting
* {@link VideoProfile#STATE_BIDIRECTIONAL} will be answered, accepting that state.
* @hide
*/
@SystemApi
public void acceptRingingCall() {
try {
if (isServiceConnected()) {
getTelecomService().acceptRingingCall();
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#acceptRingingCall", e);
}
}
/**
* If there is a ringing incoming call, this method accepts the call on behalf of the user,
* with the specified video state.
*
* @param videoState The desired video state to answer the call with.
* @hide
*/
@SystemApi
public void acceptRingingCall(int videoState) {
try {
if (isServiceConnected()) {
getTelecomService().acceptRingingCallWithVideoState(videoState);
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#acceptRingingCallWithVideoState", e);
}
}
/**
* Silences the ringer if a ringing call exists.
*
* Requires permission: {@link android.Manifest.permission#MODIFY_PHONE_STATE}
*/
@RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
public void silenceRinger() {
try {
if (isServiceConnected()) {
getTelecomService().silenceRinger(mContext.getOpPackageName());
}
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#silenceRinger", e);
}
}
/**
* Returns whether TTY is supported on this device.
*
* @hide
*/
@SystemApi
public boolean isTtySupported() {
try {
if (isServiceConnected()) {
return getTelecomService().isTtySupported(mContext.getOpPackageName());
}
} catch (RemoteException e) {
Log.e(TAG, "RemoteException attempting to get TTY supported state.", e);
}
return false;
}
/**
* Returns the current TTY mode of the device. For TTY to be on the user must enable it in
* settings and have a wired headset plugged in.
* Valid modes are:
* - {@link TelecomManager#TTY_MODE_OFF}
* - {@link TelecomManager#TTY_MODE_FULL}
* - {@link TelecomManager#TTY_MODE_HCO}
* - {@link TelecomManager#TTY_MODE_VCO}
* @hide
*/
public int getCurrentTtyMode() {
try {
if (isServiceConnected()) {
return getTelecomService().getCurrentTtyMode(mContext.getOpPackageName());
}
} catch (RemoteException e) {
Log.e(TAG, "RemoteException attempting to get the current TTY mode.", e);
}
return TTY_MODE_OFF;
}
/**
* Registers a new incoming call. A {@link ConnectionService} should invoke this method when it
* has an incoming call. The specified {@link PhoneAccountHandle} must have been registered
* with {@link #registerPhoneAccount} and the user must have enabled the corresponding
* {@link PhoneAccount}. This can be checked using {@link #getPhoneAccount}. Once invoked, this
* method will cause the system to bind to the {@link ConnectionService} associated with the
* {@link PhoneAccountHandle} and request additional information about the call
* (See {@link ConnectionService#onCreateIncomingConnection}) before starting the incoming
* call UI.
* <p>
* A {@link SecurityException} will be thrown if either the {@link PhoneAccountHandle} does not
* correspond to a registered {@link PhoneAccount} or the associated {@link PhoneAccount} is not
* currently enabled by the user.
* @param phoneAccount A {@link PhoneAccountHandle} registered with
* {@link #registerPhoneAccount}.
* @param extras A bundle that will be passed through to
* {@link ConnectionService#onCreateIncomingConnection}.
*/
public void addNewIncomingCall(PhoneAccountHandle phoneAccount, Bundle extras) {
try {
if (isServiceConnected()) {
getTelecomService().addNewIncomingCall(
phoneAccount, extras == null ? new Bundle() : extras);
}
} catch (RemoteException e) {
Log.e(TAG, "RemoteException adding a new incoming call: " + phoneAccount, e);
}
}
/**
* Registers a new unknown call with Telecom. This can only be called by the system Telephony
* service. This is invoked when Telephony detects a new unknown connection that was neither
* a new incoming call, nor an user-initiated outgoing call.
*
* @param phoneAccount A {@link PhoneAccountHandle} registered with
* {@link #registerPhoneAccount}.
* @param extras A bundle that will be passed through to
* {@link ConnectionService#onCreateIncomingConnection}.
* @hide
*/
@SystemApi
public void addNewUnknownCall(PhoneAccountHandle phoneAccount, Bundle extras) {
try {
if (isServiceConnected()) {
getTelecomService().addNewUnknownCall(
phoneAccount, extras == null ? new Bundle() : extras);
}
} catch (RemoteException e) {
Log.e(TAG, "RemoteException adding a new unknown call: " + phoneAccount, e);
}
}
/**
* Processes the specified dial string as an MMI code.
* MMI codes are any sequence of characters entered into the dialpad that contain a "*" or "#".
* Some of these sequences launch special behavior through handled by Telephony.
* This method uses the default subscription.
* <p>
* Requires that the method-caller be set as the system dialer app.
* </p>
*
* Requires permission: {@link android.Manifest.permission#MODIFY_PHONE_STATE}
*
* @param dialString The digits to dial.
* @return True if the digits were processed as an MMI code, false otherwise.
*/
@RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
public boolean handleMmi(String dialString) {
ITelecomService service = getTelecomService();
if (service != null) {
try {
return service.handlePinMmi(dialString, mContext.getOpPackageName());
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#handlePinMmi", e);
}
}
return false;
}
/**
* Processes the specified dial string as an MMI code.
* MMI codes are any sequence of characters entered into the dialpad that contain a "*" or "#".
* Some of these sequences launch special behavior through handled by Telephony.
* <p>
* Requires that the method-caller be set as the system dialer app.
* </p>
*
* Requires permission: {@link android.Manifest.permission#MODIFY_PHONE_STATE}
*
* @param accountHandle The handle for the account the MMI code should apply to.
* @param dialString The digits to dial.
* @return True if the digits were processed as an MMI code, false otherwise.
*/
@RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
public boolean handleMmi(String dialString, PhoneAccountHandle accountHandle) {
ITelecomService service = getTelecomService();
if (service != null) {
try {
return service.handlePinMmiForPhoneAccount(accountHandle, dialString,
mContext.getOpPackageName());
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#handlePinMmi", e);
}
}
return false;
}
/**
* Requires permission: {@link android.Manifest.permission#MODIFY_PHONE_STATE}
*
* @param accountHandle The handle for the account to derive an adn query URI for or
* {@code null} to return a URI which will use the default account.
* @return The URI (with the content:// scheme) specific to the specified {@link PhoneAccount}
* for the the content retrieve.
*/
@RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
public Uri getAdnUriForPhoneAccount(PhoneAccountHandle accountHandle) {
ITelecomService service = getTelecomService();
if (service != null && accountHandle != null) {
try {
return service.getAdnUriForPhoneAccount(accountHandle, mContext.getOpPackageName());
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#getAdnUriForPhoneAccount", e);
}
}
return Uri.parse("content://icc/adn");
}
/**
* Removes the missed-call notification if one is present.
* <p>
* Requires that the method-caller be set as the system dialer app.
* </p>
*
* Requires permission: {@link android.Manifest.permission#MODIFY_PHONE_STATE}
*/
@RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
public void cancelMissedCallsNotification() {
ITelecomService service = getTelecomService();
if (service != null) {
try {
service.cancelMissedCallsNotification(mContext.getOpPackageName());
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#cancelMissedCallsNotification", e);
}
}
}
/**
* Brings the in-call screen to the foreground if there is an ongoing call. If there is
* currently no ongoing call, then this method does nothing.
* <p>
* Requires that the method-caller be set as the system dialer app or have the
* {@link android.Manifest.permission#READ_PHONE_STATE} permission.
* </p>
*
* @param showDialpad Brings up the in-call dialpad as part of showing the in-call screen.
*/
@RequiresPermission(android.Manifest.permission.READ_PHONE_STATE)
public void showInCallScreen(boolean showDialpad) {
ITelecomService service = getTelecomService();
if (service != null) {
try {
service.showInCallScreen(showDialpad, mContext.getOpPackageName());
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#showCallScreen", e);
}
}
}
/**
* Places a new outgoing call to the provided address using the system telecom service with
* the specified extras.
*
* This method is equivalent to placing an outgoing call using {@link Intent#ACTION_CALL},
* except that the outgoing call will always be sent via the system telecom service. If
* method-caller is either the user selected default dialer app or preloaded system dialer
* app, then emergency calls will also be allowed.
*
* Requires permission: {@link android.Manifest.permission#CALL_PHONE}
*
* Usage example:
* <pre>
* Uri uri = Uri.fromParts("tel", "12345", null);
* Bundle extras = new Bundle();
* extras.putBoolean(TelecomManager.EXTRA_START_CALL_WITH_SPEAKERPHONE, true);
* telecomManager.placeCall(uri, extras);
* </pre>
*
* The following keys are supported in the supplied extras.
* <ul>
* <li>{@link #EXTRA_OUTGOING_CALL_EXTRAS}</li>
* <li>{@link #EXTRA_PHONE_ACCOUNT_HANDLE}</li>
* <li>{@link #EXTRA_START_CALL_WITH_SPEAKERPHONE}</li>
* <li>{@link #EXTRA_START_CALL_WITH_VIDEO_STATE}</li>
* </ul>
*
* @param address The address to make the call to.
* @param extras Bundle of extras to use with the call.
*/
@RequiresPermission(android.Manifest.permission.CALL_PHONE)
public void placeCall(Uri address, Bundle extras) {
ITelecomService service = getTelecomService();
if (service != null) {
if (address == null) {
Log.w(TAG, "Cannot place call to empty address.");
}
try {
service.placeCall(address, extras == null ? new Bundle() : extras,
mContext.getOpPackageName());
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#placeCall", e);
}
}
}
/**
* Enables and disables specified phone account.
*
* @param handle Handle to the phone account.
* @param isEnabled Enable state of the phone account.
* @hide
*/
@SystemApi
public void enablePhoneAccount(PhoneAccountHandle handle, boolean isEnabled) {
ITelecomService service = getTelecomService();
if (service != null) {
try {
service.enablePhoneAccount(handle, isEnabled);
} catch (RemoteException e) {
Log.e(TAG, "Error enablePhoneAbbount", e);
}
}
}
/**
* Dumps telecom analytics for uploading.
*
* @return
* @hide
*/
@SystemApi
@RequiresPermission(Manifest.permission.DUMP)
public List<ParcelableCallAnalytics> dumpAnalytics() {
ITelecomService service = getTelecomService();
List<ParcelableCallAnalytics> result = null;
if (service != null) {
try {
result = service.dumpCallAnalytics();
} catch (RemoteException e) {
Log.e(TAG, "Error dumping call analytics", e);
}
}
return result;
}
/**
* Launches the {@link android.app.Activity} to manage blocked numbers.
* <p> This method displays the UI to manage blocked numbers only if
* {@link android.provider.BlockedNumberContract#canCurrentUserBlockNumbers(Context)} returns
* {@code true} for the current user.
* @deprecated Use {@link #createManageBlockedNumbersIntent()} instead.
*/
// TODO: Delete this.
public void launchManageBlockedNumbersActivity() {
ITelecomService service = getTelecomService();
if (service != null) {
try {
service.launchManageBlockedNumbersActivity(mContext.getPackageName());
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#manageBlockedNumbers", e);
}
}
}
/**
* Creates the {@link Intent} which can be used with {@link Context#startActivity(Intent)} to
* launch the activity to manage blocked numbers.
* <p> The activity will display the UI to manage blocked numbers only if
* {@link android.provider.BlockedNumberContract#canCurrentUserBlockNumbers(Context)} returns
* {@code true} for the current user.
*/
public Intent createManageBlockedNumbersIntent() {
ITelecomService service = getTelecomService();
Intent result = null;
if (service != null) {
try {
result = service.createManageBlockedNumbersIntent();
} catch (RemoteException e) {
Log.e(TAG, "Error calling ITelecomService#createManageBlockedNumbersIntent", e);
}
}
return result;
}
private ITelecomService getTelecomService() {
if (mTelecomServiceOverride != null) {
return mTelecomServiceOverride;
}
return ITelecomService.Stub.asInterface(ServiceManager.getService(Context.TELECOM_SERVICE));
}
private boolean isServiceConnected() {
boolean isConnected = getTelecomService() != null;
if (!isConnected) {
Log.w(TAG, "Telecom Service not found.");
}
return isConnected;
}
}