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Android APIs
public static final class

DocumentsContract.Root

extends Object
java.lang.Object
   ↳ android.provider.DocumentsContract.Root

Class Overview

Constants related to a root of documents, including Cursor column names and flags. A root is the start of a tree of documents, such as a physical storage device, or an account. Each root starts at the directory referenced by COLUMN_DOCUMENT_ID , which can recursively contain both documents and directories.

All columns are read-only to client applications.

Summary

Constants
String COLUMN_AVAILABLE_BYTES Number of bytes available in this root.
String COLUMN_DOCUMENT_ID Document which is a directory that represents the top directory of this root.
String COLUMN_FLAGS Flags that apply to a root.
String COLUMN_ICON Icon resource ID for a root.
String COLUMN_MIME_TYPES MIME types supported by this root.
String COLUMN_ROOT_ID Unique ID of a root.
String COLUMN_SUMMARY Summary for this root, which may be shown to a user.
String COLUMN_TITLE Title for a root, which will be shown to a user.
int FLAG_LOCAL_ONLY Flag indicating that this root offers content that is strictly local on the device.
int FLAG_SUPPORTS_CREATE Flag indicating that at least one directory under this root supports creating content.
int FLAG_SUPPORTS_RECENTS Flag indicating that this root can be queried to provide recently modified documents.
int FLAG_SUPPORTS_SEARCH Flag indicating that this root supports search.
[Expand]
Inherited Methods
From class java.lang.Object

Constants

public static final String COLUMN_AVAILABLE_BYTES

Number of bytes available in this root. This column is optional, and may be null if unknown or unbounded.

Type: INTEGER (long)

Constant Value: "available_bytes"

public static final String COLUMN_DOCUMENT_ID

Document which is a directory that represents the top directory of this root. This column is required.

Type: STRING

Constant Value: "document_id"

public static final String COLUMN_FLAGS

Flags that apply to a root. This column is required.

Type: INTEGER (int)

Constant Value: "flags"

public static final String COLUMN_ICON

Icon resource ID for a root. This column is required.

Type: INTEGER (int)

Constant Value: "icon"

public static final String COLUMN_MIME_TYPES

MIME types supported by this root. This column is optional, and if null the root is assumed to support all MIME types. Multiple MIME types can be separated by a newline. For example, a root supporting audio might return "audio/*\napplication/x-flac".

Type: STRING

Constant Value: "mime_types"

public static final String COLUMN_ROOT_ID

Unique ID of a root. This ID is both provided by and interpreted by a DocumentsProvider , and should be treated as an opaque value by client applications. This column is required.

Type: STRING

Constant Value: "root_id"

public static final String COLUMN_SUMMARY

Summary for this root, which may be shown to a user. This column is optional, and may be null . For a single storage service surfacing multiple accounts as different roots, this summary should be the name of the account.

Type: STRING

Constant Value: "summary"

public static final String COLUMN_TITLE

Title for a root, which will be shown to a user. This column is required. For a single storage service surfacing multiple accounts as different roots, this title should be the name of the service.

Type: STRING

Constant Value: "title"

public static final int FLAG_LOCAL_ONLY

Flag indicating that this root offers content that is strictly local on the device. That is, no network requests are made for the content.

Constant Value: 2 (0x00000002)

public static final int FLAG_SUPPORTS_CREATE

Flag indicating that at least one directory under this root supports creating content. Roots with this flag will be shown when an application interacts with ACTION_CREATE_DOCUMENT .

Constant Value: 1 (0x00000001)

public static final int FLAG_SUPPORTS_RECENTS

Flag indicating that this root can be queried to provide recently modified documents.

Constant Value: 4 (0x00000004)

public static final int FLAG_SUPPORTS_SEARCH

Flag indicating that this root supports search.

Constant Value: 8 (0x00000008)