设置AlarmManager多意图 [英] Setting multiple Intents for AlarmManager

问题描述

我用AlarmManager 10:56在11:24等安排多个TAKS，即任务1，任务2。
这里的code：

I use AlarmManager to schedule multiple taks, i.e. Task 1 at 10:56, Task 2 at 11:24 and so on. Here's the code:

  intent = new Intent(ACTION_RECORDER_START);
  intent.putExtra(EXTRA_COMMAND_ID, command.id);
  pendingIntent = PendingIntent.getService(context, 0, intent, PendingIntent.FLAG_ONE_SHOT);
  alarmManager.set(AlarmManager.RTC_WAKEUP, command.start, pendingIntent);

下面是奇怪的事情：如果我设置一个报警，但它的工作做好。如果我设置两个，只有最后一个报警被触发。
所以，我想的问题是，当我设置第二，第三......报警，previous被覆盖。

Here's the strange thing: If I set one alarm, it does job well. If I set two, only the last alarm is fired. So, I guess the problem is that when I set second, third...alarm, previous is overriden.

从开发文档：

如果已经有这个意向预定的报警（用
  两个目的平等被定义filterEquals（意向）），然后
  它将由这一个被移除和更换。

If there is already an alarm for this Intent scheduled (with the equality of two intents being defined by filterEquals(Intent)), then it will be removed and replaced by this one.

我去源，下面的方法实现：

I went to the sources, here's the implementation of that method:

public boolean filterEquals(Intent other) {
        if (other == null) {
            return false;
        }
        if (mAction != other.mAction) {
            if (mAction != null) {
                if (!mAction.equals(other.mAction)) {
                    return false;
                }
            } else {
                if (!other.mAction.equals(mAction)) {
                    return false;
                }
            }
        }
        if (mData != other.mData) {
            if (mData != null) {
                if (!mData.equals(other.mData)) {
                    return false;
                }
            } else {
                if (!other.mData.equals(mData)) {
                    return false;
                }
            }
        }
        if (mType != other.mType) {
            if (mType != null) {
                if (!mType.equals(other.mType)) {
                    return false;
                }
            } else {
                if (!other.mType.equals(mType)) {
                    return false;
                }
            }
        }
        if (mPackage != other.mPackage) {
            if (mPackage != null) {
                if (!mPackage.equals(other.mPackage)) {
                    return false;
                }
            } else {
                if (!other.mPackage.equals(mPackage)) {
                    return false;
                }
            }
        }
        if (mComponent != other.mComponent) {
            if (mComponent != null) {
                if (!mComponent.equals(other.mComponent)) {
                    return false;
                }
            } else {
                if (!other.mComponent.equals(mComponent)) {
                    return false;
                }
            }
        }
        if (mCategories != other.mCategories) {
            if (mCategories != null) {
                if (!mCategories.equals(other.mCategories)) {
                    return false;
                }
            } else {
                if (!other.mCategories.equals(mCategories)) {
                    return false;
                }
            }
        }

        return true;
    }

所以，就我看，没有提及额外的。其实，我是靠这个：

So, as far as I see, no mention of extras. In fact, I was relying on this:

intent.putExtra(EXTRA_COMMAND_ID, command.id);

但非标准实现不比较exras。
所以，当我安排多意图，他们相比平等并得到重写！

but standart implementation doesn't compare exras. So, when I schedule multiple intents, they are compared equal and get overriden!

实际问题：

我如何重写 filterEquals（意向），这样我就可以区分的基础上额外意图？

How do I override filterEquals(Intent), so that I can distinguish Intents based on Extras?

下面是我实现的：

 static class AlarmIntent extends Intent{

        public AlarmIntent(String action){
            super(action);
        }

        @Override
        public boolean filterEquals(Intent other){
            if(super.filterEquals(other)){
                long id  = getExtras().getLong(AudioRecorder.EXTRA_COMMAND_ID, -1);
                long otherId = other.getExtras().getLong(AudioRecorder.EXTRA_COMMAND_ID, -1);
                if(id == otherId){
                    return true;
                }
            }
            return false;
        }
    }

但在我看来，这是行不通的。我认为，被覆盖的 filterEquals 不被调用。

推荐答案

结束了这一点：

pendingIntent = PendingIntent.getService(context, UNIQUE_ID, intent, PendingIntent.FLAG_ONE_SHOT);

提供了第二个参数的getService 做的工作。

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