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Android example source code file (PhoneStateIntentReceiver.java)

This example Android source code file (PhoneStateIntentReceiver.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, broadcastreceiver, content, context, dbg, handler, intentfilter, message, notif_phone, notif_service, notif_signal, os, phonestateintentreceiver, runtimeexception, servicestate, signalstrength, string, telephony, util, utilities

The PhoneStateIntentReceiver.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.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Handler;
import android.os.Message;
import android.telephony.ServiceState;
import android.telephony.SignalStrength;
import android.telephony.TelephonyManager;
import android.util.Log;

/**
 *
 *                            DO NOT USE THIS CLASS:
 *
 *      Use android.telephony.TelephonyManager and PhoneStateListener instead.
 *
 *
 */
@Deprecated
public final class PhoneStateIntentReceiver extends BroadcastReceiver {
    private static final String LOG_TAG = "PHONE";
    private static final boolean DBG = false;

    private static final int NOTIF_PHONE    = 1 << 0;
    private static final int NOTIF_SERVICE  = 1 << 1;
    private static final int NOTIF_SIGNAL   = 1 << 2;

    private static final int NOTIF_MAX      = 1 << 5;

    Phone.State mPhoneState = Phone.State.IDLE;
    ServiceState mServiceState = new ServiceState();
    SignalStrength mSignalStrength = new SignalStrength();

    private Context mContext;
    private Handler mTarget;
    private IntentFilter mFilter;
    private int mWants;
    private int mPhoneStateEventWhat;
    private int mServiceStateEventWhat;
    private int mLocationEventWhat;
    private int mAsuEventWhat;

    public PhoneStateIntentReceiver() {
        super();
        mFilter = new IntentFilter();
    }

    public PhoneStateIntentReceiver(Context context, Handler target) {
        this();
        setContext(context);
        setTarget(target);
    }

    public void setContext(Context c) {
        mContext = c;
    }

    public void setTarget(Handler h) {
        mTarget = h;
    }

    public Phone.State getPhoneState() {
        if ((mWants & NOTIF_PHONE) == 0) {
            throw new RuntimeException
                ("client must call notifyPhoneCallState(int)");
        }
        return mPhoneState;
    }

    public ServiceState getServiceState() {
        if ((mWants & NOTIF_SERVICE) == 0) {
            throw new RuntimeException
                ("client must call notifyServiceState(int)");
        }
        return mServiceState;
    }

    /**
     * Returns current signal strength in "asu", ranging from 0-31
     * or -1 if unknown
     *
     * For GSM, dBm = -113 + 2*asu
     * 0 means "-113 dBm or less"
     * 31 means "-51 dBm or greater"
     *
     * @return signal strength in asu, -1 if not yet updated
     * Throws RuntimeException if client has not called notifySignalStrength()
     */
    public int getSignalStrength() {
        // TODO: use new SignalStrength instead of asu
        if ((mWants & NOTIF_SIGNAL) == 0) {
            throw new RuntimeException
                ("client must call notifySignalStrength(int)");
        }
        int gsmSignalStrength = mSignalStrength.getGsmSignalStrength();

        return (gsmSignalStrength == 99 ? -1 : gsmSignalStrength);
    }

    /**
     * Return current signal strength in "dBm", ranging from -113 - -51dBm
     * or -1 if unknown
     *
     * @return signal strength in dBm, -1 if not yet updated
     * Throws RuntimeException if client has not called notifySignalStrength()
     */
    public int getSignalStrengthDbm() {
        if ((mWants & NOTIF_SIGNAL) == 0) {
            throw new RuntimeException
                ("client must call notifySignalStrength(int)");
        }

        int dBm = -1;

        if(!mSignalStrength.isGsm()) {
            dBm = mSignalStrength.getCdmaDbm();
        } else {
            int gsmSignalStrength = mSignalStrength.getGsmSignalStrength();
            int asu = (gsmSignalStrength == 99 ? -1 : gsmSignalStrength);
            if (asu != -1) {
                dBm = -113 + 2*asu;
            }
        }
        return dBm;
    }

    public void notifyPhoneCallState(int eventWhat) {
        mWants |= NOTIF_PHONE;
        mPhoneStateEventWhat = eventWhat;
        mFilter.addAction(TelephonyManager.ACTION_PHONE_STATE_CHANGED);
    }

    public boolean getNotifyPhoneCallState() {
        return ((mWants & NOTIF_PHONE) != 0);
    }

    public void notifyServiceState(int eventWhat) {
        mWants |= NOTIF_SERVICE;
        mServiceStateEventWhat = eventWhat;
        mFilter.addAction(TelephonyIntents.ACTION_SERVICE_STATE_CHANGED);
    }

    public boolean getNotifyServiceState() {
        return ((mWants & NOTIF_SERVICE) != 0);
    }

    public void notifySignalStrength (int eventWhat) {
        mWants |= NOTIF_SIGNAL;
        mAsuEventWhat = eventWhat;
        mFilter.addAction(TelephonyIntents.ACTION_SIGNAL_STRENGTH_CHANGED);
    }

    public boolean getNotifySignalStrength() {
        return ((mWants & NOTIF_SIGNAL) != 0);
    }

    public void registerIntent() {
        mContext.registerReceiver(this, mFilter);
    }

    public void unregisterIntent() {
        mContext.unregisterReceiver(this);
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();

        try {
            if (TelephonyIntents.ACTION_SIGNAL_STRENGTH_CHANGED.equals(action)) {
                mSignalStrength = SignalStrength.newFromBundle(intent.getExtras());

                if (mTarget != null && getNotifySignalStrength()) {
                    Message message = Message.obtain(mTarget, mAsuEventWhat);
                    mTarget.sendMessage(message);
                }
            } else if (TelephonyManager.ACTION_PHONE_STATE_CHANGED.equals(action)) {
                if (DBG) Log.d(LOG_TAG, "onReceiveIntent: ACTION_PHONE_STATE_CHANGED, state="
                               + intent.getStringExtra(Phone.STATE_KEY));
                String phoneState = intent.getStringExtra(Phone.STATE_KEY);
                mPhoneState = (Phone.State) Enum.valueOf(
                        Phone.State.class, phoneState);

                if (mTarget != null && getNotifyPhoneCallState()) {
                    Message message = Message.obtain(mTarget,
                            mPhoneStateEventWhat);
                    mTarget.sendMessage(message);
                }
            } else if (TelephonyIntents.ACTION_SERVICE_STATE_CHANGED.equals(action)) {
                mServiceState = ServiceState.newFromBundle(intent.getExtras());

                if (mTarget != null && getNotifyServiceState()) {
                    Message message = Message.obtain(mTarget,
                            mServiceStateEventWhat);
                    mTarget.sendMessage(message);
                }
            }
        } catch (Exception ex) {
            Log.e(LOG_TAG, "[PhoneStateIntentRecv] caught " + ex);
            ex.printStackTrace();
        }
    }

}

Other Android examples (source code examples)

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