27. Search
Your next task with PhotoGallery is to search photos on Flickr. You will learn how to integrate search
into your app using SearchView. SearchView is an action view class – a view that can be embedded
right into your Toolbar.
The user will be able to press on the SearchView, type in a query, and submit it. Submitting the query
will send the query string to Flickr’s search API and populate the RecyclerView with the search results
(Figure 27.1). The query string itself will be persisted to the filesystem. This means the user’s last
query will be accessible across restarts of the app and even the device.
Figure 27.1 App preview
Searching Flickr
Let’s begin with the Flickr side of things. To search Flickr, you call the flickr.photos.search
method. Here is what a GET request to search for the text “cat” looks like:
https://api.flickr.com/services/rest/?method=flickr.photos.search
&api_key=xxx&format=json&nojsoncallback=1&text=cat