CODEWITHSUNDEEP
iosobjective-cuisearchbar
learner
learner

Reputation: 11780

How to use SearchBar to get data from server

I have a design consisting of a TextField, a Button, and a TableView. The user enters a text in the TextField, then clicks the Button which launches a search. When the result returns from the server, the result is shown in the TableView.

Instead of a TextField and a Button, I want to use the SearchBar. I am not clear how to do that. Every tutorial and example I can find talk of UISearchBar and UISearchDisplayController, as if the two were inseparable. I only want to use the SearchBar to launch an internet search — with quite truly no connection to the TableView: it’s just incidental that I am displaying the data through a TableView. So how do I make the switch from “TextField and Button” to SearchBar? I imagine all I need is to implement searchBarSearchButtonClicked. But is that sound design? I mean, why do people always use UISearchDisplayController? What is UISearchDisplayController anyway? I don’t quite get its value.

Upvotes: 1

Views: 872

Answers (1)

Eugene
Eugene

Reputation: 10045

You don't have to use UISearchDisplayController - that is merely a "convenience" construction that combines a tableview with "No Results" message, a search bar and a couple of neat animations. You have two possible choices of how you can make search happen via UISearchBar - either send an asynchronous search request every time a new character is inputted into your search bar, while canceling previous search requests to not to receive their callbacks - which is costly from server-side perspective, but pretty neat from usability standpoint or use the approach you've described - perform search upon the searchBarSearchButtonClicked event.

Upvotes: 1

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