如何的Andr​​oid在其他活动停止AlarmManager [英] Android How to stop AlarmManager in other Activity

问题描述

我使用的是被称为在活动'A'多次被AlarmManager创建的服务。我的服务是反复检查从服务器响应，当反应是真实的新活动B开始。现在，当活动B开始我想停止服务以及AlarmManager。我怎样才能做到这一点？

我的'A'活动code调用服务是继

 日历CAL = Calendar.getInstance（）;
    cal.add（Calendar.SECOND，40）;    意向意图=新意图（这一点，response.class）;    //添加额外的包
    intent.putExtra（富，酒吧）;
    //开始服务
    // startService（意向）;    pintent = PendingIntent.getService（在此，0，意图，0）;    报警=（AlarmManager）getSystemService（Context.ALARM_SERVICE）;
    INT I;
    我= 15;
    alarm.setRepeating（AlarmManager.RTC_WAKEUP，cal.getTimeInMillis（），
            我* 1000，pintent）;    startService（意向）;
 

我也试图在活动'B'这个code段停止AlarmManager但不能

 意图sintent =新意图（这一点，response.class）;
     pintent = PendingIntent.getService（在此，0，sintent，0）;
     报警=（AlarmManager）getSystemService（Context.ALARM_SERVICE）;
     stopService（sintent）;
     alarm.cancel（pintent）;
 

解决方案

在活动B，你应该使用相同的环境中创建sIntent如您在活动A创建它。

因此​​，在活动A我想补充一点

 私有静态上下文的背景下;公共静态上下文getAppContext（）{
    返回ActivityA.context;
}
 

和里面的onCreate（）活动A的方法，初始化上下文

  =背景getApplicationContext（）;
 

而在活动B创建sIntent是这样的：

 意向意图=新意图（ActivityA.getAppContext（），ServiceClass.class）;
intent.putExtra（fsasf，酒吧）;
的PendingIntent pintent = PendingIntent.getService（这一点，0，意向，0）;
AlarmManager报警=（AlarmManager）getSystemService（Context.ALARM_SERVICE）;
stopService（意向）;
alarm.cancel（pintent）;
 

I am using a service which is called in Activity 'A' repeatedly created by AlarmManager. My service is checking repeatedly response from server, when response is true new Activity B is started. Now when activity B is started i want to stop service as well as AlarmManager. how can i do this??

my 'A' activity code for calling service is following

    Calendar cal = Calendar.getInstance();
    cal.add(Calendar.SECOND, 40);

    Intent intent = new Intent(this, response.class);

    // Add extras to the bundle
    intent.putExtra("foo", "bar");
    // Start the service
    // startService(intent);

    pintent = PendingIntent.getService(this, 0, intent, 0);

    alarm = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
    int i;
    i = 15;
    alarm.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(),
            i * 1000, pintent);

    startService(intent);

I have also tried this code snippet in Activity 'B' to stop AlarmManager but fail

      Intent sintent = new Intent(this, response.class);
     pintent = PendingIntent.getService(this, 0, sintent, 0);
     alarm = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
     stopService(sintent);
     alarm.cancel(pintent);

解决方案

In Activity B you should create sIntent with the same context as you created it in Activity A.

So in Activity A I would add this

private static Context context;

public static Context getAppContext(){
    return ActivityA.context;
}

and inside onCreate() method of Activity A, initialize context

context=getApplicationContext();

And in Activity B create sIntent like this:

Intent intent = new Intent(ActivityA.getAppContext(), ServiceClass.class);
intent.putExtra("fsasf", "bar");
PendingIntent pintent = PendingIntent.getService(this, 0, intent, 0);
AlarmManager alarm = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
stopService(intent);
alarm.cancel(pintent);

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