我有一个应用程序，它使用AlarmManager来安排用户通知的警报。我将Alarm对象的实例传递给AlarmManager使用的PendingIntent：
public void scheduleAlarms(List<Alarm> alarms)
{
for (Alarm alarm : alarms)
{
Log.d(Constants.EVERY_OTHER_ALARM_APP_LOG_TAG,
"Setting alarm for: " + new Date(alarm.getTime()).toString() +
" with an interval of " +
IntervalEnumStringProvider.getIntervalStringInGivenFormat(
alarm.getInterval(),
true));
PendingIntent alarmScheduledPending = createPendingIntent(alarm);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,
alarm.getTime(),
(alarm.getInterval() * Constants.ONE_SECOND_IN_MILLIS),
alarmScheduledPending);
}
}
private PendingIntent createPendingIntent(Alarm alarm)
{
alarmBroadcastReceiverIntent = new Intent(context, AlarmBroadcastReceiver.class);
alarmBroadcastReceiverIntent.putExtra(Constants.SCHEDULED_ALARM_TAG, alarm);
return PendingIntent.getBroadcast(context,
alarm.getIdForPendingIntent(),
alarmBroadcastReceiverIntent,
PendingIntent.FLAG_UPDATE_CURRENT);
}
当闹钟时间发生时，我的AlarmBroadcastReceiver班级正确接收广播，但LogCat警告未找到Alarm类：
06-29 08:30:00.084: W/Intent(66): Failure filling in extras
06-29 08:30:00.084: W/Intent(66): java.lang.RuntimeException: Parcelable encounteredClassNotFoundException reading a Serializable object (name = com.fastplanet.everyotheralarmapp.alarm.Alarm)
06-29 08:30:00.084: W/Intent(66): at android.os.Parcel.readSerializable(Parcel.java:1890)
06-29 08:30:00.084: W/Intent(66): at android.os.Parcel.readValue(Parcel.java:1761)
06-29 08:30:00.084: W/Intent(66): at android.os.Parcel.readMapInternal(Parcel.java:1947)
06-29 08:30:00.084: W/Intent(66): at android.os.Bundle.unparcel(Bundle.java:169)
06-29 08:30:00.084: W/Intent(66): at android.os.Bundle.putAll(Bundle.java:242)
06-29 08:30:00.084: W/Intent(66): at android.content.Intent.fillIn(Intent.java:4530)
06-29 08:30:00.084: W/Intent(66): at com.android.server.am.PendingIntentRecord.send(PendingIntentRecord.java:185)
06-29 08:30:00.084: W/Intent(66): at android.app.PendingIntent.send(PendingIntent.java:400)
06-29 08:30:00.084: W/Intent(66): at com.android.server.AlarmManagerService$AlarmThread.run(AlarmManagerService.java:636)
06-29 08:30:00.084: W/Intent(66): Caused by: java.lang.ClassNotFoundException: com.fastplanet.everyotheralarmapp.alarm.Alarm
06-29 08:30:00.084: W/Intent(66): at java.lang.Class.classForName(Native Method)
06-29 08:30:00.084: W/Intent(66): at java.lang.Class.forName(Class.java:237)
06-29 08:30:00.084: W/Intent(66): at java.io.ObjectInputStream.resolveClass(ObjectInputStream.java:2595)
06-29 08:30:00.084: W/Intent(66): at java.io.ObjectInputStream.readNewClassDesc(ObjectInputStream.java:1848)
06-29 08:30:00.084: W/Intent(66): at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:852)
06-29 08:30:00.084: W/Intent(66): at java.io.ObjectInputStream.readNewObject(ObjectInputStream.java:2006)
06-29 08:30:00.084: W/Intent(66): at java.io.ObjectInputStream.readNonPrimitiveContent(ObjectInputStream.java:956)
06-29 08:30:00.084: W/Intent(66): at java.io.ObjectInputStream.readObject(ObjectInputStream.java:2289)
06-29 08:30:00.084: W/Intent(66): at java.io.ObjectInputStream.readObject(ObjectInputStream.java:2243)
06-29 08:30:00.084: W/Intent(66): at android.os.Parcel.readSerializable(Parcel.java:1884)
06-29 08:30:00.084: W/Intent(66): ... 8 more
06-29 08:30:00.084: W/Intent(66): Caused by: java.lang.NoClassDefFoundError: com.fastplanet.everyotheralarmapp.alarm.Alarm
06-29 08:30:00.084: W/Intent(66): ... 18 more
06-29 08:30:00.084: W/Intent(66): Caused by: java.lang.ClassNotFoundException: com.fastplanet.everyotheralarmapp.alarm.Alarm in loader dalvik.system.PathClassLoader@4001ad90
06-29 08:30:00.084: W/Intent(66): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
06-29 08:30:00.084: W/Intent(66): at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
06-29 08:30:00.084: W/Intent(66): at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
06-29 08:30:00.084: W/Intent(66): ... 18 more
然而，BroadcastReceiver成功地从接收到的意图中解压缩Alarm对象，并且应用程序按预期工作。
发生了什么事？
更新 - 添加了清单：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.fastplanet.everyotheralarmapp"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="4"
android:targetSdkVersion="4" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.SEND_SMS" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<application
android:name=".data.TheEveryOtherAlarmAppApplication"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<receiver android:name="com.fastplanet.everyotheralarmapp.alarm.AlarmBroadcastReceiver" >
</receiver>
<receiver android:name=".alarm.BootReceiver" >
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
<action android:name="android.intent.action.QUICKBOOT_POWERON" />
</intent-filter>
</receiver>
<activity android:name=".TheEveryOtherAlarmAppActivity"
android:screenOrientation="portrait" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".NewAlarmActivity"
android:screenOrientation="portrait"
android:theme="@android:style/Theme.Dialog" >
</activity>
<activity
android:name=".About"
android:screenOrientation="portrait"
android:theme="@android:style/Theme.Dialog" >
</activity>
<activity
android:name=".AlarmAlertDialogActivity"
android:excludeFromRecents="true"
android:noHistory="true"
android:taskAffinity=""
android:theme="@android:style/Theme.NoDisplay" >
</activity>
<activity
android:name=".AlarmDetailsActivity"
android:screenOrientation="portrait" >
</activity>
</application>
</manifest>
更新2 - 添加警报类
public class Alarm implements Serializable
{
private static final long serialVersionUID = -5410846652701834321L;
private int id = 0;
private String name = "";
private long interval = 0;
private long time;
private String description;
public Alarm(String name, long time, long interval, String description, int id)
{
this.name = name;
this.time = time;
this.interval = interval;
this.description = description;
this.id = id;
}
public void setInterval(long newAlarmInterval)
{
this.interval = newAlarmInterval;
}
public long getInterval()
{
return interval;
}
public void setTime(long time)
{
this.time = time;
}
public long getTime()
{
return time;
}
public void setName(String name)
{
this.name = name;
}
public String getName()
{
return name;
}
public void setDescription(String newAlarmDescription)
{
this.description = newAlarmDescription;
}
public String getDescription()
{
return description;
}
public int getIdForPendingIntent()
{
return id;
}
@Override
public String toString()
{
return "name: " + name + ", time: "
+ new Date(time).toLocaleString()
+ ", interval: "
+ IntervalEnumStringProvider.getIntervalStringInGivenFormat(interval, true)
+ ", description: " + description
+ ", id: " + id;
}
@Override
public Alarm clone() throws CloneNotSupportedException
{
return new Alarm(new String(name), time, interval, new String(description), id);
}
}
答案 0 :(得分：8)
我在努力解决这个问题。解决方案是（归功于mazur here）：
这是android的缺陷。我的目标API是19，最小API是11.缺陷在这里输入：＆＃34; ClassNotFoundException使用自定义Parcelable＆＃34; https://code.google.com/p/android/issues/detail?id=6822
注册闹钟时：
Bundle bundle = new Bundle();
bundle.putParcelable("com.foo.alarm", alert);
mNotificationReceiverIntent.putExtra("com.foo.alarm",bundle);
mNotificationReceiverPendingIntent = PendingIntent.getBroadcast(this,
0, mNotificationReceiverIntent, 0);
收到闹钟时，
Bundle oldBundle = intent.getBundleExtra("com.foo.alarm");
Alert alert = oldBundle.getParcelable("com.foo.alarm");
答案 1 :(得分：0)
as
ClassNotFoundException: com.fastplanet.everyotheralarmapp.alarm.Alarm in loader
<receiver android:name=".alarm.BootReceiver" >
答案 2 :(得分：0)
如果要将警报对象作为Intent中的EXTRA传递，则Alarm类需要实现Parcelable，而不是Serializable。
修改
似乎这不是真的。看起来你可以使用Serializable。然而，OP无法使用此功能，并且SE上有其他帖子，人们在使用此功能时遇到了问题。
答案 3 :(得分：0)
使用ADT17，我遇到了同样的问题，但是BroadcastReceiver无法启动。
我尝试了在SO上讨论的内容：尝试改变Proguard配置，但结果是Proguard is disabled by default。试图实施Parcelable，但问题仍然存在。 唯一有效的方法是将BroadCastReceiver置于要接收的对象的Class所在的同一个包中。请注意，异常仍然作为警告抛出，就像OP描述的那样。
答案 4 :(得分：0)
我遇到了同样的问题，Android 2.3。
在我做出以下更改后，将可序列化的额外内容传递给BroadcastReceiver现在对我有用：