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Search Overview

Search is a core user feature on Android. Users should be able to search any data that is available to them, whether the content is located on the device or the Internet. To help create a consistent search experience for users, Android provides a search framework that helps you implement search for your application.

Figure 1. Screenshot of a search dialog with custom search suggestions.

The search framework offers two modes of search input: a search dialog at the top of the screen or a search widget (SearchView) that you can embed in your activity layout. In either case, the Android system will assist your search implementation by delivering search queries to a specific activity that performs searchs. You can also enable either the search dialog or widget to provide search suggestions as the user types. Figure 1 shows an example of the search dialog with optional search suggestions.

Once you've set up either the search dialog or the search widget, you can:

Note: The search framework does not provide APIs to search your data. To perform a search, you need to use APIs appropriate for your data. For example, if your data is stored in an SQLite database, you should use the android.database.sqlite APIs to perform searches.

Also, there is no guarantee that a device provides a dedicated SEARCH button that invokes the search interface in your application. When using the search dialog or a custom interface, you must provide a search button in your UI that activates the search interface. For more information, see Invoking the search dialog.

The following documents show you how to use Android's framework to implement search:

Creating a Search Interface
How to set up your application to use the search dialog or search widget.
Adding Recent Query Suggestions
How to provide suggestions based on queries previously used.
Adding Custom Suggestions
How to provide suggestions based on custom data from your application and also offer them in the system-wide Quick Search Box.
Searchable Configuration
A reference document for the searchable configuration file (though the other documents also discuss the configuration file in terms of specific behaviors).

Protecting User Privacy

When you implement search in your application, take steps to protect the user's privacy. Many users consider their activities on the phone—including searches—to be private information. To protect each user's privacy, you should abide by the following principles:

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