I am new to ionic 2. After a searching everywhere I can not find a direct answer given the following scenario:

1. I am building a PWA with ionic 2 (because I will later develop hybrid versions of this app)
2. the address where users will find and access my app will be a standard domain like `https://welcometotheapp.com?viewid=0101018737abcdefg`
3. I am using ionic 2, recently installed on windows 10
4. I have started a new blank app project
5. My question is NOT related to navigation.

My question is how do I go about accessing the url parameter `viewid`? I need this parameter so that the app send it to my server side REST api and get the right json data. My users receive the url with the parameter as a link by SMS. 
I have tried to make use of several suggestions like [this question](https://stackoverflow.com/questions/35688084/how-to-get-query-params-from-angular2?) 

But I'm spinning my wheels. I've also watched quite a number of youtube vids from Josh Morony and others but again nothing directly related.

Can someone help with this question? As a newbie, it would be very helpful if code snips were annotated with what code goes in what file given the ionic2 blank template structure. Thanks peeps!