Check if app is open during a GCM onMessage event?

Question

I am wondering how to check if my application is open and currently visible to the user when receiving an onMessage() from GCM. At first, I was just using my ow

Answer 1

The thing that worked for me:

Create a final Class Constants, inside it, create static varaiable:

public final class Constants{
public static AppCompatActivity mCurrentActivity;
}

Now, on each on resume of your activties say:

    @Override
    protected void onResume() {
        super.onResume();
        Constants.mCurrentActivity = this;
    }

When receieving notification, check if current activity is null, if its null, application is not opened, if activity isn't null, you can check things like:

if(Constants.mCurrentActivity instanceof MainActivity){
   ((MainActivity) Constants.mCurrentActivity).yourPublicMethodOrStaticObject;
}