android：通过广播接收器将某些内容传回活动

Question

so i have this problem where i have something to pass back to the activity, but the problem is i don't know how, i've read some threads but its a bit cloudy and confusing, can anyone of your shed some light about this. i just want to pass something back to the activity from my reciever (BroadcastReciever). I have read a thread that you can start an activity but the problem is that there is a bit of a confusion if passing an extra on your intent to an activity is allowed?. Thanks for any inputs any of you could provide.

Answer 1

Possible duplicate answer https://stackoverflow.com/a/6857648/760489

you can do this way by setting flag in intent when you start the activity from broadcast receiver

public void onReceive(Context context, Intent intent){
    Intent i = new Intent(context, DestinationActivity.class);
    i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    i.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
    i.putExtra("PATH", path);
    context.startActivity(i);
}

The FLAG_ACTIVITY_SINGLE_TOP makes sure the apps doesn't re-open if already open. This means that the "old" intent that opened YourActivity in the first place is re-used and it will NOT contain the extra values. You have to catch them in another method called onNewIntent() in YourActivity.

Check out the complete answer from top link

Answer 2

Try this out:

public void onReceive(Context context, Intent intent)
{

    Intent i = new Intent(context, DestinationActivity.class);
    i.putExtra("PATH", path);
    context.startActivity(i);
}