Callback.java

/**
 * Radius Networks, Inc.
 * http://www.radiusnetworks.com
 *
 * @author David G. Young
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.altbeacon.beacon.service;

import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;

import org.altbeacon.beacon.logging.LogManager;

import java.io.IOException;
import java.io.Serializable;

public class Callback implements Serializable {
    private static final String TAG = "Callback";
    private transient Intent mIntent;
    private String mIntentPackageName;

    public Callback(String intentPackageName) {
        mIntentPackageName = intentPackageName;
        initializeIntent();
    }

    private void initializeIntent() {
        if (mIntentPackageName != null) {
            mIntent = new Intent();
            mIntent.setComponent(new ComponentName(mIntentPackageName, "org.altbeacon.beacon.BeaconIntentProcessor"));
        }
    }

    public Intent getIntent() {
        return mIntent;
    }

    /**
     * Tries making the callback, first via messenger, then via intent
     *
     * @param context
     * @param dataName
     * @param data
     * @return false if it callback cannot be made
     */
    public boolean call(Context context, String dataName, Bundle data) {
        if(mIntent == null){
            initializeIntent();
        }
        boolean success = false;
        if (mIntent != null) {
            LogManager.d(TAG, "attempting callback via intent: %s", mIntent.getComponent());
            mIntent.putExtra(dataName, data);
            try {
                context.startService(mIntent);
                success = true;
            } catch (Exception e) {
                LogManager.e(
                        TAG,
                        "Failed attempting to start service: " + mIntent.getComponent().flattenToString(),
                        e
                );
            }
        }
        return success;
    }

    @SuppressWarnings("unused")
    private void readObject(java.io.ObjectInputStream in)
            throws IOException, ClassNotFoundException {
        in.defaultReadObject();
        initializeIntent();
    }
}