Persist the setting parameter in ImsPhone

import android.content.BroadcastReceiver;

import android.content.Context;

import android.content.Intent;

import android.content.SharedPreferences;

import android.net.Uri;

import android.os.AsyncResult;

import android.os.Build;

import android.os.RegistrantList;

import android.os.ResultReceiver;

import android.os.UserHandle;

import android.preference.PreferenceManager;

import android.sysprop.TelephonyProperties;

import android.telephony.AccessNetworkConstants;

import android.telephony.CarrierConfigManager;

    // Default Emergency Callback Mode exit timer

    private static final long DEFAULT_ECM_EXIT_TIMER_VALUE = 300000;

    // String to Call Composer Option Prefix set by user

    private static final String PREF_USER_SET_CALL_COMPOSER_PREFIX = "userset_callcomposer_prefix";

    /**

     * Used to create ImsManager instances, which may be injected during testing.

     */

    private final ImsManagerFactory mImsManagerFactory;

    private SharedPreferences mImsPhoneSharedPreferences;

    // To redial silently through GSM or CDMA when dialing through IMS fails

    private String mLastDialString;

        return mCurrentSubscriberUris;

    }

    /** Set call composer status from users for the current subscription */

    public void setCallComposerStatus(int status) {

        mImsPhoneSharedPreferences.edit().putInt(

                PREF_USER_SET_CALL_COMPOSER_PREFIX + getSubId(), status).commit();

    }

    /** Get call composer status from users for the current subscription */

    public int getCallComposerStatus() {

        return mImsPhoneSharedPreferences.getInt(PREF_USER_SET_CALL_COMPOSER_PREFIX + getSubId(),

                TelephonyManager.CALL_COMPOSER_STATUS_OFF);

    }

    @Override

    public int getEmergencyNumberDbVersion() {

        return getEmergencyNumberTracker().getEmergencyNumberDbVersion();

        mDefaultPhone = defaultPhone;

        mImsManagerFactory = imsManagerFactory;

        mImsPhoneSharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);

        mImsStats = new ImsStats(this);

        // The ImsExternalCallTracker needs to be defined before the ImsPhoneCallTracker, as the

        // ImsPhoneCallTracker uses a thread to spool up the ImsManager.  Part of this involves