带有以代码而非清单注册的广播接收器的 Android 警报管理器
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Android Alarm Manager with broadcast receiver registered in code rather than manifest
提问by Shane
I want to use an alarm to run some code at a certain time. I have successfully implemented an alarm with the broadcast receiver registered in the manifest but the way i understand it, this method uses a separate class for the broadcast receiver.
我想使用警报在特定时间运行一些代码。我已经成功地使用在清单中注册的广播接收器实现了警报，但按照我的理解，此方法为广播接收器使用了一个单独的类。
I can use this method to start another activity but I cant use it to run a method in my main activity?
我可以使用此方法启动另一个活动，但我不能使用它在我的主要活动中运行方法？
(how can I notify a running activity from a broadcast receiver?)
So I have been trying to register my broadcast receiver in my main activity as explained in the answer above.
所以我一直在尝试在我的主要活动中注册我的广播接收器，如上面的答案所述。
private BroadcastReceiver receiver = new BroadcastReceiver(){
@Override
public void onReceive(Context context, Intent intent) {
Toast.makeText(context, "hello", Toast.LENGTH_SHORT).show();
uploadDB();
}
};
public void onResume() {
super.onResume();
IntentFilter filter = new IntentFilter();
filter.addAction(null);
this.registerReceiver(this.receiver, filter);
}
public void onPause() {
super.onPause();
this.unregisterReceiver(this.receiver);
}
However I have been unable to get this to work with alarm manager, I am unsure as to how i should link the alarm intent to the broadcast receiver. Could anyone point me to an example of registering an alarm manager broadcast receiver dynamically in the activity? Or explain how i would do this?
但是我一直无法让它与警报管理器一起工作，我不确定我应该如何将警报意图链接到广播接收器。谁能指出我在活动中动态注册警报管理器广播接收器的示例？或解释我将如何做到这一点？
回答by user123321
How about this?
这个怎么样？
Intent startIntent = new Intent("WhatEverYouWant");
PendingIntent startPIntent = PendingIntent.getBroadcast(context, 0, startIntent, 0);
AlarmManager alarm = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
alarm.set(AlarmManager.RTC_WAKEUP, triggerTime, startPIntent);
And then in your Manifest.xmlfile:
然后在您的Manifest.xml文件中：
<receiver android:name="com.package.YourOnReceiver">
<intent-filter>
<action android:name="WhatEverYouWant" />
</intent-filter>
</receiver>
So as far as I know you still have to declare the receiver in the Manifest. I'm not sure if you can set it to a private instance inside of your activity. You could declare an onReceive inside of your activity and call that (if the BroadcastReceiver has an interface. I don't know if it does.)
所以据我所知，你仍然需要在 Manifest 中声明接收者。我不确定您是否可以将其设置为您活动中的私有实例。您可以在您的活动中声明一个 onReceive 并调用它（如果 BroadcastReceiver 有一个接口。我不知道它是否有。）
回答by Dhrupal
Start a alarm intent from where you want to start alarm. write below code from where you want to start to listen the alarm
从您要启动警报的位置启动警报意图。从您要开始收听警报的位置编写以下代码
Intent myIntent = new Intent(getBaseContext(), **AlarmReceiver**.class);
PendingIntent pendingIntent = PendingIntent.getBroadcast(getBaseContext(), 0, myIntent, 0);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
Calendar calendar = Calendar.getInstance();
calendar.setTimeInMillis(System.currentTimeMillis());
calendar.add(Calendar.MINUTE, shpref.getInt("timeoutint", 30));
alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);
And in broadcast receiver write the code you want to receive. And in menifest write below
并在广播接收器中编写您想要接收的代码。在menifest中写在下面
<receiver android:name=".AlarmReceiver" android:process=":remote"/>
You can also put repetitive alarm also. Hope it help!
您也可以设置重复警报。希望有帮助！
