Android : How can I pop up activity when alarm goes off?

In my Broadcaster Receiver,

I have this set:

//Intent that enables the view to pop up when alarm goes off
        Intent i = new Intent();
        i.setClassName("com.example.Device.MainActivity", "com.example.Device.OtherActivity");
        i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        context.startActivity(i);

and in my notification service, I have this:

// First let's define the intent to trigger when notification is selected
        // Start out by creating a normal intent (in this case to open an activity)
        intent = new Intent(this, OtherActivity.class);

For some reason, when the notification goes off, the activity that I want to pop up does not pop up when alarm rings.

How can I pop up my activity when the alarm goes off/rings? I have done it before but I changed something in my code to mess it up.