Android example source code file (ReceiverList.java)

This example Android source code file (ReceiverList.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

activitymanagerservice, android, arraylist, binder, broadcastfilter, broadcastrecord, content, iintentreceiver, os, printer, printwriterprinter, processrecord, receiverlist, string, stringbuilder, util, utilities, utils

The ReceiverList.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.server.am;

import android.content.IIntentReceiver;
import android.content.Intent;
import android.os.Binder;
import android.os.Bundle;
import android.os.IBinder;
import android.os.RemoteException;
import android.util.PrintWriterPrinter;
import android.util.Printer;

import java.io.PrintWriter;
import java.util.ArrayList;

/**
 * A receiver object that has registered for one or more broadcasts.
 * The ArrayList holds BroadcastFilter objects.
 */
class ReceiverList extends ArrayList<BroadcastFilter>
        implements IBinder.DeathRecipient {
    final ActivityManagerService owner;
    public final IIntentReceiver receiver;
    public final ProcessRecord app;
    public final int pid;
    public final int uid;
    BroadcastRecord curBroadcast = null;
    boolean linkedToDeath = false;

    String stringName;
    
    ReceiverList(ActivityManagerService _owner, ProcessRecord _app,
            int _pid, int _uid, IIntentReceiver _receiver) {
        owner = _owner;
        receiver = _receiver;
        app = _app;
        pid = _pid;
        uid = _uid;
    }

    // Want object identity, not the array identity we are inheriting.
    public boolean equals(Object o) {
        return this == o;
    }
    public int hashCode() {
        return System.identityHashCode(this);
    }
    
    public void binderDied() {
        linkedToDeath = false;
        owner.unregisterReceiver(receiver);
    }
    
    void dumpLocal(PrintWriter pw, String prefix) {
        pw.print(prefix); pw.print("app="); pw.print(app);
            pw.print(" pid="); pw.print(pid); pw.print(" uid="); pw.println(uid);
        if (curBroadcast != null || linkedToDeath) {
            pw.print(prefix); pw.print("curBroadcast="); pw.print(curBroadcast);
                pw.print(" linkedToDeath="); pw.println(linkedToDeath);
        }
    }
    
    void dump(PrintWriter pw, String prefix) {
        Printer pr = new PrintWriterPrinter(pw);
        dumpLocal(pw, prefix);
        String p2 = prefix + "  ";
        final int N = size();
        for (int i=0; i<N; i++) {
            BroadcastFilter bf = get(i);
            pw.print(prefix); pw.print("Filter #"); pw.print(i);
                    pw.print(": BroadcastFilter{");
                    pw.print(Integer.toHexString(System.identityHashCode(bf)));
                    pw.println('}');
            bf.dumpInReceiverList(pw, pr, p2);
        }
    }
    
    public String toString() {
        if (stringName != null) {
            return stringName;
        }
        StringBuilder sb = new StringBuilder(128);
        sb.append("ReceiverList{");
        sb.append(Integer.toHexString(System.identityHashCode(this)));
        sb.append(' ');
        sb.append(pid);
        sb.append(' ');
        sb.append((app != null ? app.processName : "(unknown name)"));
        sb.append('/');
        sb.append(uid);
        sb.append((receiver.asBinder() instanceof Binder) ? " local:" : " remote:");
        sb.append(Integer.toHexString(System.identityHashCode(receiver.asBinder())));
        sb.append('}');
        return stringName = sb.toString();
    }
}