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Android APIs
public class

SearchRecentSuggestions

extends Object
java.lang.Object
   ↳ android.provider.SearchRecentSuggestions

Class Overview

This is a utility class providing access to SearchRecentSuggestionsProvider.

Unlike some utility classes, this one must be instantiated and properly initialized, so that it can be configured to operate with the search suggestions provider that you have created.

Typically, you will do this in your searchable activity, each time you receive an incoming ACTION_SEARCH Intent. The code to record each incoming query is as follows: 

      SearchSuggestions suggestions = new SearchSuggestions(this,
              MySuggestionsProvider.AUTHORITY, MySuggestionsProvider.MODE);
      suggestions.saveRecentQuery(queryString, null);

For a working example, see SearchSuggestionSampleProvider and SearchQueryResults in samples/ApiDemos/app.

Developer Guides

For information about using search suggestions in your application, read the Adding Recent Query Suggestions developer guide.

Summary

Constants
int QUERIES_PROJECTION_DATE_INDEX Index into the provided query projections.
int QUERIES_PROJECTION_DISPLAY1_INDEX Index into the provided query projections.
int QUERIES_PROJECTION_DISPLAY2_INDEX Index into the provided query projections.
int QUERIES_PROJECTION_QUERY_INDEX Index into the provided query projections.
Fields
public static final String[] QUERIES_PROJECTION_1LINE This is the database projection that can be used to view saved queries, when configured for one-line operation.
public static final String[] QUERIES_PROJECTION_2LINE This is the database projection that can be used to view saved queries, when configured for two-line operation.
Public Constructors
SearchRecentSuggestions(Context context, String authority, int mode)
Although provider utility classes are typically static, this one must be constructed because it needs to be initialized using the same values that you provided in your SearchRecentSuggestionsProvider.
Public Methods
void clearHistory()
Completely delete the history.
void saveRecentQuery(String queryString, String line2)
Add a query to the recent queries list.
Protected Methods
void truncateHistory(ContentResolver cr, int maxEntries)
Reduces the length of the history table, to prevent it from growing too large.
[Expand]
Inherited Methods
From class java.lang.Object

Constants

public static final int QUERIES_PROJECTION_DATE_INDEX

Added in API level 1

Index into the provided query projections. For use with Cursor.update methods.

Constant Value: 1 (0x00000001)

public static final int QUERIES_PROJECTION_DISPLAY1_INDEX

Added in API level 1

Index into the provided query projections. For use with Cursor.update methods.

Constant Value: 3 (0x00000003)

public static final int QUERIES_PROJECTION_DISPLAY2_INDEX

Added in API level 1

Index into the provided query projections. For use with Cursor.update methods.

Constant Value: 4 (0x00000004)

public static final int QUERIES_PROJECTION_QUERY_INDEX

Added in API level 1

Index into the provided query projections. For use with Cursor.update methods.

Constant Value: 2 (0x00000002)

Fields

public static final String[] QUERIES_PROJECTION_1LINE

Added in API level 1

This is the database projection that can be used to view saved queries, when configured for one-line operation.

public static final String[] QUERIES_PROJECTION_2LINE

Added in API level 1

This is the database projection that can be used to view saved queries, when configured for two-line operation.

Public Constructors

public SearchRecentSuggestions (Context context, String authority, int mode)

Added in API level 1

Although provider utility classes are typically static, this one must be constructed because it needs to be initialized using the same values that you provided in your SearchRecentSuggestionsProvider.

Parameters
authority This must match the authority that you've declared in your manifest.
mode You can use mode flags here to determine certain functional aspects of your database. Note, this value should not change from run to run, because when it does change, your suggestions database may be wiped.
See Also

Public Methods

public void clearHistory ()

Added in API level 1

Completely delete the history. Use this call to implement a "clear history" UI. Any application that implements search suggestions based on previous actions (such as recent queries, page/items viewed, etc.) should provide a way for the user to clear the history. This gives the user a measure of privacy, if they do not wish for their recent searches to be replayed by other users of the device (via suggestions).

public void saveRecentQuery (String queryString, String line2)

Added in API level 1

Add a query to the recent queries list. Returns immediately, performing the save in the background.

Parameters
queryString The string as typed by the user. This string will be displayed as the suggestion, and if the user clicks on the suggestion, this string will be sent to your searchable activity (as a new search query).
line2 If you have configured your recent suggestions provider with DATABASE_MODE_2LINES, you can pass a second line of text here. It will be shown in a smaller font, below the primary suggestion. When typing, matches in either line of text will be displayed in the list. If you did not configure two-line mode, or if a given suggestion does not have any additional text to display, you can pass null here.

Protected Methods

protected void truncateHistory (ContentResolver cr, int maxEntries)

Added in API level 1

Reduces the length of the history table, to prevent it from growing too large.

Parameters
cr Convenience copy of the content resolver.
maxEntries Max entries to leave in the table. 0 means remove all entries.