Android example source code file (PhoneFactory.java)

This example Android source code file (PhoneFactory.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

android, cdmaphone, content, context, creating, gsmphone, illegalstateexception, interruptedexception, looper, mode, net, network, phone, phonefactory, phoneproxy, provider, runtimeexception, socket_open_max_retry, subscription, telephony

The PhoneFactory.java Android example source code

/*
 * Copyright (C) 2006 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.internal.telephony;

import android.content.Context;
import android.net.LocalServerSocket;
import android.os.Looper;
import android.provider.Settings;
import android.util.Log;

import com.android.internal.telephony.cdma.CDMAPhone;
import com.android.internal.telephony.gsm.GSMPhone;

/**
 * {@hide}
 */
public class PhoneFactory {
    static final String LOG_TAG = "PHONE";
    static final int SOCKET_OPEN_RETRY_MILLIS = 2 * 1000;
    static final int SOCKET_OPEN_MAX_RETRY = 3;
    //***** Class Variables

    static private Phone sProxyPhone = null;
    static private CommandsInterface sCommandsInterface = null;

    static private boolean sMadeDefaults = false;
    static private PhoneNotifier sPhoneNotifier;
    static private Looper sLooper;
    static private Context sContext;

    static final int preferredNetworkMode = RILConstants.PREFERRED_NETWORK_MODE;

    static final int preferredCdmaSubscription = RILConstants.PREFERRED_CDMA_SUBSCRIPTION;

    //***** Class Methods

    public static void makeDefaultPhones(Context context) {
        makeDefaultPhone(context);
    }

    /**
     * FIXME replace this with some other way of making these
     * instances
     */
    public static void makeDefaultPhone(Context context) {
        synchronized(Phone.class) {
            if (!sMadeDefaults) {
                sLooper = Looper.myLooper();
                sContext = context;

                if (sLooper == null) {
                    throw new RuntimeException(
                        "PhoneFactory.makeDefaultPhone must be called from Looper thread");
                }

                int retryCount = 0;
                for(;;) {
                    boolean hasException = false;
                    retryCount ++;

                    try {
                        // use UNIX domain socket to
                        // prevent subsequent initialization
                        new LocalServerSocket("com.android.internal.telephony");
                    } catch (java.io.IOException ex) {
                        hasException = true;
                    }

                    if ( !hasException ) {
                        break;
                    } else if (retryCount > SOCKET_OPEN_MAX_RETRY) {
                        throw new RuntimeException("PhoneFactory probably already running");
                    } else {
                        try {
                            Thread.sleep(SOCKET_OPEN_RETRY_MILLIS);
                        } catch (InterruptedException er) {
                        }
                    }
                }

                sPhoneNotifier = new DefaultPhoneNotifier();

                //Get preferredNetworkMode from Settings.System
                int networkMode = Settings.Secure.getInt(context.getContentResolver(),
                        Settings.Secure.PREFERRED_NETWORK_MODE, preferredNetworkMode);
                Log.i(LOG_TAG, "Network Mode set to " + Integer.toString(networkMode));

                //Get preferredNetworkMode from Settings.System
                int cdmaSubscription = Settings.Secure.getInt(context.getContentResolver(),
                        Settings.Secure.PREFERRED_CDMA_SUBSCRIPTION, preferredCdmaSubscription);
                Log.i(LOG_TAG, "Cdma Subscription set to " + Integer.toString(cdmaSubscription));

                //reads the system properties and makes commandsinterface
                sCommandsInterface = new RIL(context, networkMode, cdmaSubscription);

                int phoneType = getPhoneType(networkMode);
                if (phoneType == Phone.PHONE_TYPE_GSM) {
                    Log.i(LOG_TAG, "Creating GSMPhone");
                    sProxyPhone = new PhoneProxy(new GSMPhone(context,
                            sCommandsInterface, sPhoneNotifier));
                } else if (phoneType == Phone.PHONE_TYPE_CDMA) {
                    Log.i(LOG_TAG, "Creating CDMAPhone");
                    sProxyPhone = new PhoneProxy(new CDMAPhone(context,
                            sCommandsInterface, sPhoneNotifier));
                }

                sMadeDefaults = true;
            }
        }
    }

    /*
     * This function returns the type of the phone, depending
     * on the network mode.
     *
     * @param network mode
     * @return Phone Type
     */
    public static int getPhoneType(int networkMode) {
        switch(networkMode) {
        case RILConstants.NETWORK_MODE_CDMA:
        case RILConstants.NETWORK_MODE_CDMA_NO_EVDO:
        case RILConstants.NETWORK_MODE_EVDO_NO_CDMA:
            return Phone.PHONE_TYPE_CDMA;

        case RILConstants.NETWORK_MODE_WCDMA_PREF:
        case RILConstants.NETWORK_MODE_GSM_ONLY:
        case RILConstants.NETWORK_MODE_WCDMA_ONLY:
        case RILConstants.NETWORK_MODE_GSM_UMTS:
            return Phone.PHONE_TYPE_GSM;

        case RILConstants.NETWORK_MODE_GLOBAL:
            return Phone.PHONE_TYPE_CDMA;
        default:
            return Phone.PHONE_TYPE_GSM;
        }
    }

    public static Phone getDefaultPhone() {
        if (sLooper != Looper.myLooper()) {
            throw new RuntimeException(
                "PhoneFactory.getDefaultPhone must be called from Looper thread");
        }

        if (!sMadeDefaults) {
            throw new IllegalStateException("Default phones haven't been made yet!");
        }
       return sProxyPhone;
    }

    public static Phone getCdmaPhone() {
        synchronized(PhoneProxy.lockForRadioTechnologyChange) {
            Phone phone = new CDMAPhone(sContext, sCommandsInterface, sPhoneNotifier);
            return phone;
        }
    }

    public static Phone getGsmPhone() {
        synchronized(PhoneProxy.lockForRadioTechnologyChange) {
            Phone phone = new GSMPhone(sContext, sCommandsInterface, sPhoneNotifier);
            return phone;
        }
    }
}