PendingIntent.getBroadcast（）永远不会返回null [英] PendingIntent.getBroadcast() never returns null

问题描述

我试图找到的PendingIntent 我的广播接收器这是使用称为 AlarmManager 。

我使用 PendingIntent.getBroadcast（）使用它被称为具有非常相同的参数，但它永远不会返回null。

 公开为MyObject（上下文的背景下，AnotherObject对象）{    我的意图;
    I =新意图（背景下，MyReceiver.class）;
    i.putExtra（AnotherObject.SOMETHING，串）;
    i.putExtra（AnotherObject.SOME_BOOL，真）;    PI的PendingIntent = PendingIntent.getBroadcast（背景下，0，I，PendingIntent.FLAG_NO_CREATE）;    如果（PI == NULL）{
        Log.v（帮助，的PendingIntent为空）;
    }
    其他{
        Log.v（帮助，的PendingIntent不为空）;
    }
}
 

下面是我的测试驱动程序：

  =该新MyObject来（这一点，对象）;LogUtil.startAlarm（这一点，对象）;该=新LogUtil（这一点，对象）;
 

这是 startAlarm ：

 公共静态无效startAlarm（背景信息，AnotherObject对象）{    我的意图;
    I =新意图（即，MyReceiver.class）;
    i.putExtra（AnotherObject.SOMETHING，串）;
    i.putExtra（AnotherObject.SOME_BOOL，真）;    长间隔= 60 * 1000; //分钟
    长的第一= SystemClock.elapsedRealtime（）+区间;    PI的PendingIntent = PendingIntent.getBroadcast（即，0，I，PendingIntent.FLAG_UPDATE_CURRENT）;    //安排报警
    AlarmManager AM2 =（AlarmManager）that.getSystemService（Context.ALARM_SERVICE）;
    am2.setRepeating（AlarmManager.ELAPSED_REALTIME_WAKEUP，第一次，间隔，PI）;
    Log.v（帮助，启动报警）;
}
 

下面是我的日志输出：

 十一月9日至2日：18：54.330：VERBOSE /帮助（9621）的PendingIntent不为空
十一月九日至2日：18：54.330：VERBOSE /帮助（9621）：开始报警
十一月九日至2日：18：54.330：VERBOSE /帮助（9621）的PendingIntent不为空
 

为什么它说这是从来没有空，甚至在我启动报警？不应该 getBroadcast（）返回NULL？

解决方案

  

我试图找到我的BroadcastReceiver的的PendingIntent被使用AlarmManager调用。

呃，为什么？

  

我使用PendingIntent.getBroadcast（）使用，它调用了同样的参数，但它永远不会返回null。

这不应该。这将创建一个的PendingIntent 如果没有一个等效的底层意图。有人可能会说，该方法的名称应该是 createBroadcast（）来使这一点更加清晰。

I am trying to find the PendingIntent of my BroadcastReceiver that was called using an AlarmManager.

I am using PendingIntent.getBroadcast() using the very same arguments that it was called with, however it never returns null.

public MyObject(Context context, AnotherObject object) {

    Intent i;
    i = new Intent(context, MyReceiver.class);
    i.putExtra(AnotherObject.SOMETHING, "string");
    i.putExtra(AnotherObject.SOME_BOOL, true);

    PendingIntent pi = PendingIntent.getBroadcast(context, 0, i, PendingIntent.FLAG_NO_CREATE);

    if (pi == null) {
        Log.v("help", "PendingIntent is null");
    }
    else {
        Log.v("help", "PendingIntent is not null");
    }
}

Here is my test driver:

that = new MyObject(this, object);

LogUtil.startAlarm(this, object);

that = new LogUtil(this, object);

This is startAlarm:

public static void startAlarm(Context that, AnotherObject object) {

    Intent i;
    i = new Intent(that, MyReceiver.class);
    i.putExtra(AnotherObject.SOMETHING, "string");
    i.putExtra(AnotherObject.SOME_BOOL, true);

    long interval = 60 * 1000; // Minute
    long first = SystemClock.elapsedRealtime() + interval;

    PendingIntent pi = PendingIntent.getBroadcast(that, 0, i, PendingIntent.FLAG_UPDATE_CURRENT);

    // Schedule the alarm
    AlarmManager am2 = (AlarmManager) that.getSystemService(Context.ALARM_SERVICE);
    am2.setRepeating(AlarmManager.ELAPSED_REALTIME_WAKEUP, first, interval, pi);
    Log.v("help", "Started alarm");
}

Here is my log output:

09-02 11:18:54.330: VERBOSE/help(9621): PendingIntent is not null
09-02 11:18:54.330: VERBOSE/help(9621): Started alarm
09-02 11:18:54.330: VERBOSE/help(9621): PendingIntent is not null

Why does it say it's never null, even before I start the alarm? Shouldn't getBroadcast() return null?

解决方案

I am trying to find the PendingIntent of my BroadcastReceiver that was called using an AlarmManager.

Um, why?

I am using PendingIntent.getBroadcast() using the very same arguments that it was called with, however it never returns null.

It's not supposed to. It will create a PendingIntent if there is not already one for an equivalent underlying Intent. One could argue that the method name ought to be createBroadcast() to make that point clearer.

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