Programming Google Glass (for HUDA ADEL ALANAZI) by Eric Redmond

Author:Eric Redmond
Language: eng
Format: epub
Tags: Pragmatic Bookshelf
ISBN: 978-1-937785-79-6
Publisher: The Pragmatic Bookshelf, LLC (466510)

Using Location

With a location in hand, we can optionally display the location in a map by using a ​glass://map​ path, or provide a menu option to get directions from where a user currently is to a destination. The next two sections are examples of what you can do with a Glass’s location. There are innumerably more.

Navigating to a Location

Now that you have the location of your Glass user, why not expand Lunch Roulette a bit? Rather than presenting the user with a random cuisine, you can use her location along with a map service like Yelp or Google Places to present the local restaurants.

The code necessary to search Google Places for a nearby cuisine is wrapped up into a ​PlaceUtils​ class as part of the book’s downloadable code. The ​getRandom​ method chooses a random restaurant by searching for a nearby cuisine at a given ​latitude​ and ​longitude​ location.

You’ll need to activate the Places API on your Google console.[18] This is in the same API console where you activated the Mirror API in Chapter 2, ​The Google App Engine PaaS​.[19] Then click on API Access and find the API key under Simple API Access. Set the ​AuthUtils.API_KEY​ constant in your Java code to that key.

chapter-5/src/test/book/glass/LunchRoulette.java

​ ​// get a nearby restaurant from Google Places​

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