Added in API level 19

Summary: Inherited Constants | Ctors | Methods | Inherited Methods

DocumentsProvider

Kotlin |Java

public abstract class DocumentsProvider
extends ContentProvider

java.lang.Object
↳	android.content.ContentProvider
	↳	android.provider.DocumentsProvider

Base class for a document provider. A document provider offers read and write access to durable files, such as files stored on a local disk, or files in a cloud storage service. To create a document provider, extend this class, implement the abstract methods, and add it to your manifest like this:

<manifest>
    ...
    <application>
        ...
        <provider
            android:name="com.example.MyCloudProvider"
            android:authorities="com.example.mycloudprovider"
            android:exported="true"
            android:grantUriPermissions="true"
            android:permission="android.permission.MANAGE_DOCUMENTS"
            android:enabled="@bool/isAtLeastKitKat">
            <intent-filter>
                <action android:name="android.content.action.DOCUMENTS_PROVIDER" />
            </intent-filter>
        </provider>
        ...
    </application>
</manifest>

When defining your provider, you must protect it with Manifest.permission.MANAGE_DOCUMENTS, which is a permission only the system can obtain. Applications cannot use a documents provider directly; they must go through Intent.ACTION_OPEN_DOCUMENT or Intent.ACTION_CREATE_DOCUMENT which requires a user to actively navigate and select documents. When a user selects documents through that UI, the system issues narrow URI permission grants to the requesting application.

Documents

A document can be either an openable stream (with a specific MIME type), or a directory containing additional documents (with the Document.MIME_TYPE_DIR MIME type). Each directory represents the top of a subtree containing zero or more documents, which can recursively contain even more documents and directories.

Each document can have different capabilities, as described by Document.COLUMN_FLAGS. For example, if a document can be represented as a thumbnail, your provider can set Document.FLAG_SUPPORTS_THUMBNAIL and implement openDocumentThumbnail(java.lang.String, android.graphics.Point, android.os.CancellationSignal) to return that thumbnail.

Each document under a provider is uniquely referenced by its Document.COLUMN_DOCUMENT_ID, which must not change once returned. A single document can be included in multiple directories when responding to queryChildDocuments(java.lang.String, java.lang.String[], java.lang.String). For example, a provider might surface a single photo in multiple locations: once in a directory of geographic locations, and again in a directory of dates.

Roots

All documents are surfaced through one or more "roots." Each root represents the top of a document tree that a user can navigate. For example, a root could represent an account or a physical storage device. Similar to documents, each root can have capabilities expressed through Root.COLUMN_FLAGS.

See also:

Summary

Inherited constants

From interface android.content.ComponentCallbacks2

`int`	`TRIM_MEMORY_BACKGROUND` Level for `onTrimMemory(int)`: the process has gone on to the LRU list.
`int`	`TRIM_MEMORY_COMPLETE` This constant was deprecated in API level 35. Apps are not notified of this level since API level 34
`int`	`TRIM_MEMORY_MODERATE` This constant was deprecated in API level 35. Apps are not notified of this level since API level 34
`int`	`TRIM_MEMORY_RUNNING_CRITICAL` This constant was deprecated in API level 35. Apps are not notified of this level since API level 34
`int`	`TRIM_MEMORY_RUNNING_LOW` This constant was deprecated in API level 35. Apps are not notified of this level since API level 34
`int`	`TRIM_MEMORY_RUNNING_MODERATE` This constant was deprecated in API level 35. Apps are not notified of this level since API level 34
`int`	`TRIM_MEMORY_UI_HIDDEN` Level for `onTrimMemory(int)`: the process had been showing a user interface, and is no longer doing so.

Public constructors
`DocumentsProvider()`

Public methods
`void`	`attachInfo(Context context, ProviderInfo info)` Implementation is provided by the parent class.
`Bundle`	`call(String method, String arg, Bundle extras)` Implementation is provided by the parent class.
`Uri`	`canonicalize(Uri uri)` Implementation is provided by the parent class.
`String`	`copyDocument(String sourceDocumentId, String targetParentDocumentId)` Copy the requested document or a document tree.
`String`	`createDocument(String parentDocumentId, String mimeType, String displayName)` Create a new document and return its newly generated `Document.COLUMN_DOCUMENT_ID`.
`IntentSender`	`createWebLinkIntent(String documentId, Bundle options)` Creates an intent sender for a web link, if the document is web linkable.
`final int`	`delete(Uri uri, String selection, String[] selectionArgs)` Implementation is provided by the parent class.
`void`	`deleteDocument(String documentId)` Delete the requested document.
`void`	`ejectRoot(String rootId)` Ejects the root.
`DocumentsContract.Path`	`findDocumentPath(String parentDocumentId, String childDocumentId)` Finds the canonical path for the requested document.
`Bundle`	`getDocumentMetadata(String documentId)` Returns metadata associated with the document.
`String[]`	`getDocumentStreamTypes(String documentId, String mimeTypeFilter)` Return a list of streamable MIME types matching the filter, which can be passed to `openTypedDocument(java.lang.String, java.lang.String, android.os.Bundle, android.os.CancellationSignal)`.
`String`	`getDocumentType(String documentId)` Return concrete MIME type of the requested document.
`String[]`	`getStreamTypes(Uri uri, String mimeTypeFilter)` Called by a client to determine the types of data streams that this content provider support for the given URI.
`final String`	`getType(Uri uri)` Implementation is provided by the parent class.
`final String`	`getTypeAnonymous(Uri uri)` An unrestricted version of getType, which does not reveal sensitive information
`final Uri`	`insert(Uri uri, ContentValues values)` Implementation is provided by the parent class.
`boolean`	`isChildDocument(String parentDocumentId, String documentId)` Test if a document is descendant (child, grandchild, etc) from the given parent.
`String`	`moveDocument(String sourceDocumentId, String sourceParentDocumentId, String targetParentDocumentId)` Move the requested document or a document tree.
`final AssetFileDescriptor`	`openAssetFile(Uri uri, String mode, CancellationSignal signal)` Implementation is provided by the parent class.
`final AssetFileDescriptor`	`openAssetFile(Uri uri, String mode)` Implementation is provided by the parent class.
`abstract ParcelFileDescriptor`	`openDocument(String documentId, String mode, CancellationSignal signal)` Open and return the requested document.
`AssetFileDescriptor`	`openDocumentThumbnail(String documentId, Point sizeHint, CancellationSignal signal)` Open and return a thumbnail of the requested document.
`final ParcelFileDescriptor`	`openFile(Uri uri, String mode, CancellationSignal signal)` Implementation is provided by the parent class.
`final ParcelFileDescriptor`	`openFile(Uri uri, String mode)` Implementation is provided by the parent class.
`final AssetFileDescriptor`	`openTypedAssetFile(Uri uri, String mimeTypeFilter, Bundle opts)` Implementation is provided by the parent class.
`final AssetFileDescriptor`	`openTypedAssetFile(Uri uri, String mimeTypeFilter, Bundle opts, CancellationSignal signal)` Implementation is provided by the parent class.
`AssetFileDescriptor`	`openTypedDocument(String documentId, String mimeTypeFilter, Bundle opts, CancellationSignal signal)` Open and return the document in a format matching the specified MIME type filter.
`final Cursor`	`query(Uri uri, String[] projection, Bundle queryArgs, CancellationSignal cancellationSignal)` Implementation is provided by the parent class.
`Cursor`	`query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder, CancellationSignal cancellationSignal)` WARNING: Sub-classes should not override this method.
`final Cursor`	`query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder)` Implement this to handle query requests from clients.
`Cursor`	`queryChildDocuments(String parentDocumentId, String[] projection, Bundle queryArgs)` Override this method to return the children documents contained in the requested directory.
`abstract Cursor`	`queryChildDocuments(String parentDocumentId, String[] projection, String sortOrder)` Return the children documents contained in the requested directory.
`abstract Cursor`	`queryDocument(String documentId, String[] projection)` Return metadata for the single requested document.
`Cursor`	`queryRecentDocuments(String rootId, String[] projection, Bundle queryArgs, CancellationSignal signal)` Return recently modified documents under the requested root.
`Cursor`	`queryRecentDocuments(String rootId, String[] projection)` Return recently modified documents under the requested root.
`abstract Cursor`	`queryRoots(String[] projection)` Return all roots currently provided.
`Cursor`	`querySearchDocuments(String rootId, String[] projection, Bundle queryArgs)` Return documents that match the given query under the requested root.
`Cursor`	`querySearchDocuments(String rootId, String query, String[] projection)` Return documents that match the given query under the requested root.
`void`	`removeDocument(String documentId, String parentDocumentId)` Removes the requested document or a document tree.
`String`	`renameDocument(String documentId, String displayName)` Rename an existing document.
`final void`	`revokeDocumentPermission(String documentId)` Revoke any active permission grants for the given `Document.COLUMN_DOCUMENT_ID`, usually called when a document becomes invalid.
`final int`	`update(Uri uri, ContentValues values, String selection, String[] selectionArgs)` Implementation is provided by the parent class.

Inherited methods

From class


        
          android.content.ContentProvider

`ContentProviderResult[]`	`applyBatch(String authority, ArrayList<ContentProviderOperation> operations)` Override this to handle requests to perform a batch of operations, or the default implementation will iterate over the operations and call `ContentProviderOperation.apply` on each of them.
`ContentProviderResult[]`	`applyBatch(ArrayList<ContentProviderOperation> operations)`
`void`	`attachInfo(Context context, ProviderInfo info)` After being instantiated, this is called to tell the content provider about itself.
`int`	`bulkInsert(Uri uri, ContentValues[] values)` Override this to handle requests to insert a set of new rows, or the default implementation will iterate over the values and call `insert(Uri, ContentValues)` on each of them.
`Bundle`	`call(String authority, String method, String arg, Bundle extras)` Call a provider-defined method.
`Bundle`	`call(String method, String arg, Bundle extras)`
`Uri`	`canonicalize(Uri url)` Implement this to support canonicalization of URIs that refer to your content provider.
`final ContentProvider.CallingIdentity`	`clearCallingIdentity()` Reset the identity of the incoming IPC on the current thread.
`abstract int`	`delete(Uri uri, String selection, String[] selectionArgs)` Implement this to handle requests to delete one or more rows.
`int`	`delete(Uri uri, Bundle extras)` Implement this to handle requests to delete one or more rows.
`void`	`dump(FileDescriptor fd, PrintWriter writer, String[] args)` Print the Provider's state into the given stream.
`final AttributionSource`	`getCallingAttributionSource()` Gets the attribution source of the calling app.
`final String`	`getCallingAttributionTag()` Return the attribution tag of the caller that initiated the request being processed on the current thread.
`final String`	`getCallingPackage()` Return the package name of the caller that initiated the request being processed on the current thread.
`final String`	`getCallingPackageUnchecked()` Return the package name of the caller that initiated the request being processed on the current thread.
`final Context`	`getContext()` Retrieves the Context this provider is running in.
`final PathPermission[]`	`getPathPermissions()` Return the path-based permissions required for read and/or write access to this content provider.
`final String`	`getReadPermission()` Return the name of the permission required for read-only access to this content provider.
`String[]`	`getStreamTypes(Uri uri, String mimeTypeFilter)` Called by a client to determine the types of data streams that this content provider supports for the given URI.
`abstract String`	`getType(Uri uri)` Implement this to handle requests for the MIME type of the data at the given URI.
`String`	`getTypeAnonymous(Uri uri)` Implement this to handle requests for MIME type of URIs, that does not need to reveal any internal information which should be protected by any permission.
`final String`	`getWritePermission()` Return the name of the permission required for read/write access to this content provider.
`Uri`	`insert(Uri uri, ContentValues values, Bundle extras)` Implement this to handle requests to insert a new row.
`abstract Uri`	`insert(Uri uri, ContentValues values)` Implement this to handle requests to insert a new row.
`boolean`	`isTemporary()` Returns true if this instance is a temporary content provider.
`void`	`onCallingPackageChanged()` Called whenever the value of `getCallingPackage()` changes, giving the provider an opportunity to invalidate any security related caching it may be performing.
`void`	`onConfigurationChanged(Configuration newConfig)` Called by the system when the device configuration changes while your component is running. This method is always called on the application main thread, and must not perform lengthy operations.
`abstract boolean`	`onCreate()` Implement this to initialize your content provider on startup.
`void`	`onLowMemory()` This is called when the overall system is running low on memory, and actively running processes should trim their memory usage. This method is always called on the application main thread, and must not perform lengthy operations.
`void`	`onTrimMemory(int level)` Called when the operating system has determined that it is a good time for a process to trim unneeded memory from its process.
`AssetFileDescriptor`	`openAssetFile(Uri uri, String mode, CancellationSignal signal)` This is like `openFile(Uri, String)`, but can be implemented by providers that need to be able to return sub-sections of files, often assets inside of their .apk.
`AssetFileDescriptor`	`openAssetFile(Uri uri, String mode)` This is like `openFile(Uri, String)`, but can be implemented by providers that need to be able to return sub-sections of files, often assets inside of their .apk.
`ParcelFileDescriptor`	`openFile(Uri uri, String mode, CancellationSignal signal)` Override this to handle requests to open a file blob.
`ParcelFileDescriptor`	`openFile(Uri uri, String mode)` Override this to handle requests to open a file blob.
`final ParcelFileDescriptor`	`openFileHelper(Uri uri, String mode)` Convenience for subclasses that wish to implement `openFile(Uri, String)` by looking up a column named "_data" at the given URI.
`<T> ParcelFileDescriptor`	`openPipeHelper(Uri uri, String mimeType, Bundle opts, T args, PipeDataWriter<T> func)` A helper function for implementing `openTypedAssetFile(Uri, String, Bundle)`, for creating a data pipe and background thread allowing you to stream generated data back to the client.
`AssetFileDescriptor`	`openTypedAssetFile(Uri uri, String mimeTypeFilter, Bundle opts, CancellationSignal signal)` Called by a client to open a read-only stream containing data of a particular MIME type.
`AssetFileDescriptor`	`openTypedAssetFile(Uri uri, String mimeTypeFilter, Bundle opts)` Called by a client to open a read-only stream containing data of a particular MIME type.
`Cursor`	`query(Uri uri, String[] projection, Bundle queryArgs, CancellationSignal cancellationSignal)` Implement this to handle query requests where the arguments are packed into a `Bundle`.
`Cursor`	`query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder, CancellationSignal cancellationSignal)` Implement this to handle query requests from clients with support for cancellation.
`abstract Cursor`	`query(Uri uri, String[] projection, String selection, String[] selectionArgs, String sortOrder)` Implement this to handle query requests from clients.
`boolean`	`refresh(Uri uri, Bundle extras, CancellationSignal cancellationSignal)` Implement this to support refresh of content identified by `uri`.
`final Context`	`requireContext()` Retrieves a Non-Nullable Context this provider is running in, this is intended to be called after `onCreate()`.
`final void`	`restoreCallingIdentity(ContentProvider.CallingIdentity identity)` Restore the identity of the incoming IPC on the current thread back to a previously identity that was returned by `clearCallingIdentity()`.
`final void`	`setPathPermissions(PathPermission[] permissions)` Change the path-based permission required to read and/or write data in the content provider.
`final void`	`setReadPermission(String permission)` Change the permission required to read data from the content provider.
`final void`	`setWritePermission(String permission)` Change the permission required to read and write data in the content provider.
`void`	`shutdown()` Implement this to shut down the ContentProvider instance.
`Uri`	`uncanonicalize(Uri url)` Remove canonicalization from canonical URIs previously returned by `canonicalize(Uri)`.
`int`	`update(Uri uri, ContentValues values, Bundle extras)` Implement this to handle requests to update one or more rows.
`abstract int`	`update(Uri uri, ContentValues values, String selection, String[] selectionArgs)` Implement this to handle requests to update one or more rows.

From class


        
          java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

From interface


        
          android.content.ComponentCallbacks2


      onTrimMemory(int level)

Called when the operating system has determined that it is a good time for a process to trim unneeded memory from its process.

From interface


        
          android.content.ComponentCallbacks

`abstract void`	`onConfigurationChanged(Configuration newConfig)` Called by the system when the device configuration changes while your component is running.
`abstract void`	`onLowMemory()` This method was deprecated in API level 35. Since API level 14 this is superseded by `ComponentCallbacks2.onTrimMemory`. Since API level 34 this is never called. If you're overriding ComponentCallbacks2#onTrimMemory and your minSdkVersion is greater than API 14, you can provide an empty implementation for this method.

Public constructors

DocumentsProvider

public DocumentsProvider ()

Public methods

attachInfo

Added in API level 19

public void attachInfo (Context context, 
                ProviderInfo info)

Implementation is provided by the parent class.

Parameters
`context`	`Context`: The context this provider is running in
`info`	`ProviderInfo`: Registered information about this content provider

call

Added in API level 19

public Bundle call (String method, 
                String arg, 
                Bundle extras)

Implementation is provided by the parent class. Can be overridden to provide additional functionality, but subclasses must always call the superclass. If the superclass returns null, the subclass may implement custom behavior.
If you override this method you must call through to the superclass implementation.

Parameters
`method`	`String`: This value cannot be `null`.
`arg`	`String`: This value may be `null`.
`extras`	`Bundle`: This value may be `null`.

Returns
`Bundle`	This value may be `null`.

canonicalize

Added in API level 19

public Uri canonicalize (Uri uri)

This is typically used to resolve a subtree URI into a concrete document reference, issuing a narrower single-document URI permission grant along the way.
If you override this method you must call through to the superclass implementation.

Parameters
`uri`	`Uri`: The Uri to canonicalize. This value cannot be `null`.

Returns
`Uri`	Return the canonical representation of `url`, or null if canonicalization of that Uri is not supported.

See also:

DocumentsContract.buildDocumentUriUsingTree(Uri, String)

copyDocument

Added in API level 24

public String copyDocument (String sourceDocumentId, 
                String targetParentDocumentId)

Copy the requested document or a document tree.

Copies a document including all child documents to another location within the same document provider. Upon completion returns the document id of the copied document at the target destination. null must never be returned.

Parameters
`sourceDocumentId`	`String`: the document to copy.
`targetParentDocumentId`	`String`: the target document to be copied into as a child.

Returns
`String`

Throws
`AuthenticationRequiredException`	If authentication is required from the user (such as login credentials), but it is not guaranteed that the client will handle this properly.
`FileNotFoundException`

createDocument

Added in API level 19

public String createDocument (String parentDocumentId, 
                String mimeType, 
                String displayName)

Create a new document and return its newly generated Document.COLUMN_DOCUMENT_ID. You must allocate a new Document.COLUMN_DOCUMENT_ID to represent the document, which must not change once returned.

Parameters
`parentDocumentId`	`String`: the parent directory to create the new document under.
`mimeType`	`String`: the concrete MIME type associated with the new document. If the MIME type is not supported, the provider must throw.
`displayName`	`String`: the display name of the new document. The provider may alter this name to meet any internal constraints, such as avoiding conflicting names.

Returns
`String`

Throws
`AuthenticationRequiredException`	If authentication is required from the user (such as login credentials), but it is not guaranteed that the client will handle this properly.
`FileNotFoundException`

createWebLinkIntent

Added in API level 26

public IntentSender createWebLinkIntent (String documentId, 
                Bundle options)

Creates an intent sender for a web link, if the document is web linkable.

AuthenticationRequiredException can be thrown if user does not have sufficient permission for the linked document. Before any new permissions are granted for the linked document, a visible UI must be shown, so the user can explicitly confirm whether the permission grants are expected. The user must be able to cancel the operation.

Options passed as an argument may include a list of recipients, such as email addresses. The provider should reflect these options if possible, but it's acceptable to ignore them. In either case, confirmation UI must be shown before any new permission grants are granted.

It is all right to generate a web link without granting new permissions, if opening the link would result in a page for requesting permission access. If it's impossible then the operation must fail by throwing an exception.

Parameters
`documentId`	`String`: the document to create a web link intent for.
`options`	`Bundle`: additional information, such as list of recipients. Optional. This value may be `null`.

Returns
`IntentSender`

Throws
`AuthenticationRequiredException`	If authentication is required from the user (such as login credentials), but it is not guaranteed that the client will handle this properly.
`FileNotFoundException`

See also:

delete

Added in API level 19

public final int delete (Uri uri, 
                String selection, 
                String[] selectionArgs)

Implementation is provided by the parent class. Throws by default, and cannot be overridden.

Parameters
`uri`	`Uri`: The full URI to query, including a row ID (if a specific record is requested). This value cannot be `null`.
`selection`	`String`: An optional restriction to apply to rows when deleting. This value may be `null`.
`selectionArgs`	`String`: This value may be `null`.

Returns
`int`	The number of rows affected.

See also:

deleteDocument(String)

deleteDocument

Added in API level 19

public void deleteDocument (String documentId)

Delete the requested document.

Upon returning, any URI permission grants for the given document will be revoked. If additional documents were deleted as a side effect of this call (such as documents inside a directory) the implementor is responsible for revoking those permissions using revokeDocumentPermission(java.lang.String).

Parameters
`documentId`	`String`: the document to delete.

Throws
`AuthenticationRequiredException`	If authentication is required from the user (such as login credentials), but it is not guaranteed that the client will handle this properly.
`FileNotFoundException`

ejectRoot

Added in API level 26

public void ejectRoot (String rootId)

Ejects the root. Throws IllegalStateException if ejection failed.

Parameters
`rootId`	`String`: the root to be ejected.

See also:

DocumentsContract.Root.FLAG_SUPPORTS_EJECT

findDocumentPath

Added in API level 26

public DocumentsContract.Path findDocumentPath (String parentDocumentId, 
                String childDocumentId)

Finds the canonical path for the requested document. The path must start from the parent document if parentDocumentId is not null or the root document if parentDocumentId is null. If there are more than one path to this document, return the most typical one. Include both the parent document or root document and the requested document in the returned path.

This API assumes that document ID has enough info to infer the root. Different roots should use different document ID to refer to the same document.

Parameters
`parentDocumentId`	`String`: the document from which the path starts if not null, or null to indicate a path from the root is requested.
`childDocumentId`	`String`: the document which path is requested.

Returns
`DocumentsContract.Path`	the path of the requested document. If parentDocumentId is null returned root ID must not be null. If parentDocumentId is not null returned root ID must be null.

Throws
`AuthenticationRequiredException`	If authentication is required from the user (such as login credentials), but it is not guaranteed that the client will handle this properly.
`FileNotFoundException`

getDocumentMetadata

Added in API level 29

public Bundle getDocumentMetadata (String documentId)

Returns metadata associated with the document. The type of metadata returned is specific to the document type. For example the data returned for an image file will likely consist primarily or solely of EXIF metadata.

The returned Bundle will contain zero or more entries depending on the type of data supported by the document provider.

A DocumentsContract.METADATA_TYPES containing a String[] value. The string array identifies the type or types of metadata returned. Each value in the can be used to access a Bundle of data containing that type of data.
An entry each for each type of returned metadata. Each set of metadata is itself represented as a bundle and accessible via a string key naming the type of data.

Parameters
`documentId`	`String`: get the metadata of the document This value cannot be `null`.

Returns
`Bundle`	a Bundle of Bundles. This value may be `null`.

Throws
`FileNotFoundException`

See also:

DocumentsContract.getDocumentMetadata(ContentResolver, Uri)

getDocumentStreamTypes

Added in API level 24

public String[] getDocumentStreamTypes (String documentId, 
                String mimeTypeFilter)

Return a list of streamable MIME types matching the filter, which can be passed to openTypedDocument(java.lang.String, java.lang.String, android.os.Bundle, android.os.CancellationSignal).

The default implementation returns a MIME type provided by queryDocument(java.lang.String, java.lang.String[]) as long as it matches the filter and the document does not have the Document.FLAG_VIRTUAL_DOCUMENT flag set.

Virtual documents must have at least one streamable format.

Parameters
`documentId`	`String`
`mimeTypeFilter`	`String`

Returns
`String[]`

See also:

getDocumentType

Added in API level 19

public String getDocumentType (String documentId)

Return concrete MIME type of the requested document. Must match the value of Document.COLUMN_MIME_TYPE for this document. The default implementation queries queryDocument(java.lang.String, java.lang.String[]), so providers may choose to override this as an optimization.

Parameters
`documentId`	`String`

Returns
`String`

Throws
`AuthenticationRequiredException`	If authentication is required from the user (such as login credentials), but it is not guaranteed that the client will handle this properly.
`FileNotFoundException`

getStreamTypes

Added in API level 19

public String[] getStreamTypes (Uri uri, 
                String mimeTypeFilter)

Called by a client to determine the types of data streams that this content provider support for the given URI.

Overriding this method is deprecated. Override openTypedDocument(String, String, Bundle, CancellationSignal) instead.

Parameters
`uri`	`Uri`: The data in the content provider being queried. This value cannot be `null`.
`mimeTypeFilter`	`String`: The type of data the client desires. May be a pattern, such as / to retrieve all possible data types. This value cannot be `null`.

Returns
`String[]`	Returns `null` if there are no possible data streams for the given mimeTypeFilter. Otherwise returns an array of all available concrete MIME types.

See also:

getDocumentStreamTypes(String, String)

getType

Added in API level 19

public final String getType (Uri uri)

Implementation is provided by the parent class. Cannot be overridden.

Parameters
`uri`	`Uri`: the URI to query. This value cannot be `null`.

Returns
`String`	a MIME type string, or `null` if there is no type.

See also:

getDocumentType(String)

getTypeAnonymous

Added in API level 34

public final String getTypeAnonymous (Uri uri)

An unrestricted version of getType, which does not reveal sensitive information

Parameters
`uri`	`Uri`: This value cannot be `null`.

Returns
`String`	This value may be `null`.

insert

Added in API level 19

public final Uri insert (Uri uri, 
                ContentValues values)

Implementation is provided by the parent class. Throws by default, and cannot be overridden.

Parameters
`uri`	`Uri`: The content:// URI of the insertion request. This value cannot be `null`.
`values`	`ContentValues`: A set of column_name/value pairs to add to the database. This value may be `null`.

Returns
`Uri`	The URI for the newly inserted item. This value may be `null`.

See also:

createDocument(String, String, String)

isChildDocument

Added in API level 21

public boolean isChildDocument (String parentDocumentId, 
                String documentId)

Test if a document is descendant (child, grandchild, etc) from the given parent. For example, providers must implement this to support Intent.ACTION_OPEN_DOCUMENT_TREE. You should avoid making network requests to keep this request fast.

Parameters
`parentDocumentId`	`String`: parent to verify against.
`documentId`	`String`: child to verify.

Returns
`boolean`	if given document is a descendant of the given parent.

See also:

DocumentsContract.Root.FLAG_SUPPORTS_IS_CHILD

moveDocument

Added in API level 24

public String moveDocument (String sourceDocumentId, 
                String sourceParentDocumentId, 
                String targetParentDocumentId)

Move the requested document or a document tree.

Moves a document including all child documents to another location within the same document provider. Upon completion returns the document id of the copied document at the target destination. null must never be returned.

It's the responsibility of the provider to revoke grants if the document is no longer accessible using sourceDocumentId.

Parameters
`sourceDocumentId`	`String`: the document to move.
`sourceParentDocumentId`	`String`: the parent of the document to move.
`targetParentDocumentId`	`String`: the target document to be a new parent of the source document.

Returns
`String`

Throws
`AuthenticationRequiredException`	If authentication is required from the user (such as login credentials), but it is not guaranteed that the client will handle this properly.
`FileNotFoundException`

openAssetFile

Added in API level 19

public final AssetFileDescriptor openAssetFile (Uri uri, 
                String mode, 
                CancellationSignal signal)

Implementation is provided by the parent class. Cannot be overridden.

Parameters
`uri`	`Uri`: The URI whose file is to be opened. This value cannot be `null`.
`mode`	`String`: The string representation of the file mode. Can be "r", "w", "wt", "wa", "rw" or "rwt". Please note the exact implementation of these may differ for each Provider implementation - for example, "w" may or may not truncate. This value cannot be `null`.
`signal`	`CancellationSignal`: A signal to cancel the operation in progress, or `null` if none. For example, if you are downloading a file from the network to service a "rw" mode request, you should periodically call `CancellationSignal.throwIfCanceled()` to check whether the client has canceled the request and abort the download.

Returns
`AssetFileDescriptor`	Returns a new AssetFileDescriptor which you can use to access the file. This value may be `null`.

Throws
`FileNotFoundException`

See also:

openDocument(String, String, CancellationSignal)

openAssetFile

Added in API level 19

public final AssetFileDescriptor openAssetFile (Uri uri, 
                String mode)

Implementation is provided by the parent class. Cannot be overridden.

Parameters
`uri`	`Uri`: The URI whose file is to be opened. This value cannot be `null`.
`mode`	`String`: The string representation of the file mode. Can be "r", "w", "wt", "wa", "rw" or "rwt". Please note the exact implementation of these may differ for each Provider implementation - for example, "w" may or may not truncate. This value cannot be `null`.

Returns
`AssetFileDescriptor`	Returns a new AssetFileDescriptor which you can use to access the file. This value may be `null`.

Throws
`FileNotFoundException`

See also:

openDocument(String, String, CancellationSignal)

openDocument

Added in API level 19

public abstract ParcelFileDescriptor openDocument (String documentId, 
                String mode, 
                CancellationSignal signal)

Open and return the requested document.

Your provider should return a reliable ParcelFileDescriptor to detect when the remote caller has finished reading or writing the document.

Mode "r" should always be supported. Provider should throw UnsupportedOperationException if the passing mode is not supported. You may return a pipe or socket pair if the mode is exclusively "r" or "w", but complex modes like "rw" imply a normal file on disk that supports seeking.

If you block while downloading content, you should periodically check CancellationSignal.isCanceled() to abort abandoned open requests.

Parameters
`documentId`	`String`: the document to return.
`mode`	`String`: the mode to open with, such as 'r', 'w', or 'rw'.
`signal`	`CancellationSignal`: used by the caller to signal if the request should be cancelled. May be null.

Returns
`ParcelFileDescriptor`

Throws
`AuthenticationRequiredException`	If authentication is required from the user (such as login credentials), but it is not guaranteed that the client will handle this properly.
`FileNotFoundException`

See also:

openDocumentThumbnail

Added in API level 19

public AssetFileDescriptor openDocumentThumbnail (String documentId, 
                Point sizeHint, 
                CancellationSignal signal)

Open and return a thumbnail of the requested document.

A provider should return a thumbnail closely matching the hinted size, attempting to serve from a local cache if possible. A provider should never return images more than double the hinted size.

If you perform expensive operations to download or generate a thumbnail, you should periodically check CancellationSignal.isCanceled() to abort abandoned thumbnail requests.

Parameters
`documentId`	`String`: the document to return.
`sizeHint`	`Point`: hint of the optimal thumbnail dimensions.
`signal`	`CancellationSignal`: used by the caller to signal if the request should be cancelled. May be null.

Returns
`AssetFileDescriptor`

Throws
`AuthenticationRequiredException`	If authentication is required from the user (such as login credentials), but it is not guaranteed that the client will handle this properly.
`FileNotFoundException`

See also:

DocumentsContract.Document.FLAG_SUPPORTS_THUMBNAIL

openFile

Added in API level 19

public final ParcelFileDescriptor openFile (Uri uri, 
                String mode, 
                CancellationSignal signal)

Implementation is provided by the parent class. Cannot be overridden.

Parameters
`uri`	`Uri`: The URI whose file is to be opened. This value cannot be `null`.
`mode`	`String`: The string representation of the file mode. Can be "r", "w", "wt", "wa", "rw" or "rwt". Please note the exact implementation of these may differ for each Provider implementation - for example, "w" may or may not truncate. This value cannot be `null`.
`signal`	`CancellationSignal`: A signal to cancel the operation in progress, or `null` if none. For example, if you are downloading a file from the network to service a "rw" mode request, you should periodically call `CancellationSignal.throwIfCanceled()` to check whether the client has canceled the request and abort the download.

Returns
`ParcelFileDescriptor`	Returns a new ParcelFileDescriptor which you can use to access the file. This value may be `null`.

Throws
`FileNotFoundException`

See also:

openDocument(String, String, CancellationSignal)

openFile

Added in API level 19

public final ParcelFileDescriptor openFile (Uri uri, 
                String mode)

Implementation is provided by the parent class. Cannot be overridden.

Parameters
`uri`	`Uri`: The URI whose file is to be opened. This value cannot be `null`.
`mode`	`String`: The string representation of the file mode. Can be "r", "w", "wt", "wa", "rw" or "rwt". Please note the exact implementation of these may differ for each Provider implementation - for example, "w" may or may not truncate. This value cannot be `null`.

Returns
`ParcelFileDescriptor`	Returns a new ParcelFileDescriptor which you can use to access the file. This value may be `null`.

Throws
`FileNotFoundException`

See also:

openDocument(String, String, CancellationSignal)

openTypedAssetFile

Added in API level 19

public final AssetFileDescriptor openTypedAssetFile (Uri uri, 
                String mimeTypeFilter, 
                Bundle opts)

Implementation is provided by the parent class. Cannot be overridden.

Parameters
`uri`	`Uri`: The data in the content provider being queried. This value cannot be `null`.
`mimeTypeFilter`	`String`: The type of data the client desires. May be a pattern, such as /, if the caller does not have specific type requirements; in this case the content provider will pick its best type matching the pattern. This value cannot be `null`.
`opts`	`Bundle`: Additional options from the client. The definitions of these are specific to the content provider being called. This value may be `null`.

Returns
`AssetFileDescriptor`	Returns a new AssetFileDescriptor from which the client can read data of the desired type. This value may be `null`.

Throws
`FileNotFoundException`

See also:

openTypedAssetFile

Added in API level 19

public final AssetFileDescriptor openTypedAssetFile (Uri uri, 
                String mimeTypeFilter, 
                Bundle opts, 
                CancellationSignal signal)

Implementation is provided by the parent class. Cannot be overridden.

Parameters
`uri`	`Uri`: The data in the content provider being queried. This value cannot be `null`.
`mimeTypeFilter`	`String`: The type of data the client desires. May be a pattern, such as /, if the caller does not have specific type requirements; in this case the content provider will pick its best type matching the pattern. This value cannot be `null`.
`opts`	`Bundle`: Additional options from the client. The definitions of these are specific to the content provider being called. This value may be `null`.
`signal`	`CancellationSignal`: A signal to cancel the operation in progress, or `null` if none. For example, if you are downloading a file from the network to service a "rw" mode request, you should periodically call `CancellationSignal.throwIfCanceled()` to check whether the client has canceled the request and abort the download.

Returns
`AssetFileDescriptor`	Returns a new AssetFileDescriptor from which the client can read data of the desired type. This value may be `null`.

Throws
`FileNotFoundException`

See also:

openTypedDocument

Added in API level 24

public AssetFileDescriptor openTypedDocument (String documentId, 
                String mimeTypeFilter, 
                Bundle opts, 
                CancellationSignal signal)

Open and return the document in a format matching the specified MIME type filter.

A provider may perform a conversion if the documents's MIME type is not matching the specified MIME type filter.

Virtual documents must have at least one streamable format.

Parameters
`documentId`	`String`: the document to return.
`mimeTypeFilter`	`String`: the MIME type filter for the requested format. May be \/, which matches any MIME type.
`opts`	`Bundle`: extra options from the client. Specific to the content provider.
`signal`	`CancellationSignal`: used by the caller to signal if the request should be cancelled. May be null.

Returns
`AssetFileDescriptor`

Throws
`AuthenticationRequiredException`	If authentication is required from the user (such as login credentials), but it is not guaranteed that the client will handle this properly.
`FileNotFoundException`

See also:

getDocumentStreamTypes(String, String)

query

Added in API level 26

public final Cursor query (Uri uri, 
                String[] projection, 
                Bundle queryArgs, 
                CancellationSignal cancellationSignal)

Implementation is provided by the parent class. Cannot be overridden.

Parameters
`uri`	`Uri`: The URI to query. This will be the full URI sent by the client. This value cannot be `null`.
`projection`	`String`: The list of columns to put into the cursor. If `null` provide a default set of columns.
`queryArgs`	`Bundle`: A Bundle containing additional information necessary for the operation. Arguments may include SQL style arguments, such as `ContentResolver.QUERY_ARG_SQL_LIMIT`, but note that the documentation for each individual provider will indicate which arguments they support. This value may be `null`.
`cancellationSignal`	`CancellationSignal`: A signal to cancel the operation in progress, or `null`.

Returns
`Cursor`	a Cursor or `null`.

See also:

query

Added in API level 19

public Cursor query (Uri uri, 
                String[] projection, 
                String selection, 
                String[] selectionArgs, 
                String sortOrder, 
                CancellationSignal cancellationSignal)

WARNING: Sub-classes should not override this method. This method is non-final solely for the purposes of backwards compatibility.

Parameters
`uri`	`Uri`: The URI to query. This will be the full URI sent by the client; if the client is requesting a specific record, the URI will end in a record number that the implementation should parse and add to a WHERE or HAVING clause, specifying that _id value. This value cannot be `null`.
`projection`	`String`: The list of columns to put into the cursor. If `null` all columns are included.
`selection`	`String`: A selection criteria to apply when filtering rows. If `null` then all rows are included.
`selectionArgs`	`String`: You may include ?s in selection, which will be replaced by the values from selectionArgs, in order that they appear in the selection. The values will be bound as Strings. This value may be `null`.
`sortOrder`	`String`: How the rows in the cursor should be sorted. If `null` then the provider is free to define the sort order.
`cancellationSignal`	`CancellationSignal`: A signal to cancel the operation in progress, or `null` if none. If the operation is canceled, then `OperationCanceledException` will be thrown when the query is executed.

Returns
`Cursor`	a Cursor or `null`.

See also:

{@link #queryDocument(java.lang.String,java.lang.String[])}, {@link #queryRecentDocuments(java.lang.String,java.lang.String[])}, {@link #queryRoots(java.lang.String[])}, and {@link #querySearchDocuments(java.lang.String,java.lang.String[],android.os.Bundle)}.

query

Added in API level 19

public final Cursor query (Uri uri, 
                String[] projection, 
                String selection, 
                String[] selectionArgs, 
                String sortOrder)

Implement this to handle query requests from clients.

Apps targeting Build.VERSION_CODES.O or higher should override query(android.net.Uri, java.lang.String[], android.os.Bundle, android.os.CancellationSignal) and provide a stub implementation of this method.

This method can be called from multiple threads, as described in Processes and Threads.

Example client call:

// Request a specific record.
 Cursor managedCursor = managedQuery(
         ContentUris.withAppendedId(Contacts.People.CONTENT_URI, 2),
         projection,    // Which columns to return.
         null,          // WHERE clause.
         null,          // WHERE clause value substitution
         People.NAME + " ASC");   // Sort order.

Example implementation:

// SQLiteQueryBuilder is a helper class that creates the
 // proper SQL syntax for us.
 SQLiteQueryBuilder qBuilder = new SQLiteQueryBuilder();

 // Guard against SQL injection attacks
 qBuilder.setStrict(true);
 qBuilder.setProjectionMap(MAP_OF_QUERYABLE_COLUMNS);
 qBuilder.setStrictColumns(true);
 qBuilder.setStrictGrammar(true);

 // Set the table we're querying.
 qBuilder.setTables(DATABASE_TABLE_NAME);

 // If the query ends in a specific record number, we're
 // being asked for a specific record, so set the
 // WHERE clause in our query.
 if((URI_MATCHER.match(uri)) == SPECIFIC_MESSAGE){
     qBuilder.appendWhere("_id=" + uri.getPathLeafId());
 }

 // Make the query.
 Cursor c = qBuilder.query(mDb,
         projection,
         selection,
         selectionArgs,
         groupBy,
         having,
         sortOrder);
 c.setNotificationUri(getContext().getContentResolver(), uri);
 return c;

Parameters
`uri`	`Uri`: The URI to query. This will be the full URI sent by the client; if the client is requesting a specific record, the URI will end in a record number that the implementation should parse and add to a WHERE or HAVING clause, specifying that _id value. This value cannot be `null`.
`projection`	`String`: The list of columns to put into the cursor. If `null` all columns are included.
`selection`	`String`: A selection criteria to apply when filtering rows. If `null` then all rows are included.
`selectionArgs`	`String`: You may include ?s in selection, which will be replaced by the values from selectionArgs, in order that they appear in the selection. The values will be bound as Strings. This value may be `null`.
`sortOrder`	`String`: How the rows in the cursor should be sorted. If `null` then the provider is free to define the sort order.

Returns
`Cursor`	a Cursor or `null`.

queryChildDocuments

Added in API level 26

public Cursor queryChildDocuments (String parentDocumentId, 
                String[] projection, 
                Bundle queryArgs)

Override this method to return the children documents contained in the requested directory. This must return immediate descendants only.

If your provider is cloud-based, and you have data cached locally, you may return the local data immediately, setting DocumentsContract.EXTRA_LOADING on Cursor extras to indicate that you are still fetching additional data. Then, when the network data is available, you can send a change notification to trigger a requery and return the complete contents. To return a Cursor with extras, you need to extend and override Cursor.getExtras().

To support change notifications, you must Cursor.setNotificationUri(ContentResolver, Uri) with a relevant Uri, such as DocumentsContract.buildChildDocumentsUri(String, String). Then you can call ContentResolver.notifyChange(Uri, android.database.ContentObserver, boolean) with that Uri to send change notifications.

Parameters
`parentDocumentId`	`String`: the directory to return children for.
`projection`	`String`: list of `Document` columns to put into the cursor. If `null` all supported columns should be included.
`queryArgs`	`Bundle`: Bundle containing sorting information or other argument useful to the provider. If no sorting information is available, default sorting will be used, which may be unordered. See `ContentResolver.QUERY_ARG_SORT_COLUMNS` for details. This value may be `null`.

Returns
`Cursor`

Throws
`AuthenticationRequiredException`	If authentication is required from the user (such as login credentials), but it is not guaranteed that the client will handle this properly.
`FileNotFoundException`

See also:

queryChildDocuments

Added in API level 19

public abstract Cursor queryChildDocuments (String parentDocumentId, 
                String[] projection, 
                String sortOrder)

Return the children documents contained in the requested directory. This must only return immediate descendants, as additional queries will be issued to recursively explore the tree.

Apps targeting Build.VERSION_CODES.O or higher should override queryChildDocuments(java.lang.String, java.lang.String[], android.os.Bundle).

If your provider is cloud-based, and you have some data cached or pinned locally, you may return the local data immediately, setting DocumentsContract.EXTRA_LOADING on the Cursor to indicate that you are still fetching additional data. Then, when the network data is available, you can send a change notification to trigger a requery and return the complete contents. To return a Cursor with extras, you need to extend and override Cursor.getExtras().

Parameters
`parentDocumentId`	`String`: the directory to return children for.
`projection`	`String`: list of `Document` columns to put into the cursor. If `null` all supported columns should be included.
`sortOrder`	`String`: how to order the rows, formatted as an SQL `ORDER BY` clause (excluding the ORDER BY itself). Passing `null` will use the default sort order, which may be unordered. This ordering is a hint that can be used to prioritize how data is fetched from the network, but UI may always enforce a specific ordering.

Returns
`Cursor`

Throws
`AuthenticationRequiredException`	If authentication is required from the user (such as login credentials), but it is not guaranteed that the client will handle this properly.
`FileNotFoundException`

See also:

queryDocument

Added in API level 19

public abstract Cursor queryDocument (String documentId, 
                String[] projection)

Return metadata for the single requested document. You should avoid making network requests to keep this request fast.

Parameters
`documentId`	`String`: the document to return.
`projection`	`String`: list of `Document` columns to put into the cursor. If `null` all supported columns should be included.

Returns
`Cursor`

Throws
`AuthenticationRequiredException`	If authentication is required from the user (such as login credentials), but it is not guaranteed that the client will handle this properly.
`FileNotFoundException`

queryRecentDocuments

Added in API level 29

public Cursor queryRecentDocuments (String rootId, 
                String[] projection, 
                Bundle queryArgs, 
                CancellationSignal signal)

Return recently modified documents under the requested root. This will only be called for roots that advertise Root.FLAG_SUPPORTS_RECENTS. The returned documents should be sorted by Document.COLUMN_LAST_MODIFIED in descending order of the most recently modified documents.

If this method is overriden by the concrete DocumentsProvider and ContentResolver.QUERY_ARG_LIMIT is specified with a nonnegative int under queryArgs, the result will be limited by that number and ContentResolver.QUERY_ARG_LIMIT will be specified under ContentResolver.EXTRA_HONORED_ARGS. Otherwise, a default 64 limit will be used and no QUERY_ARG* will be specified under ContentResolver.EXTRA_HONORED_ARGS.

Recent documents do not support change notifications.

Parameters
`rootId`	`String`: This value cannot be `null`.
`projection`	`String`: list of `Document` columns to put into the cursor. If `null` all supported columns should be included.
`queryArgs`	`Bundle`: the extra query arguments. This value may be `null`.
`signal`	`CancellationSignal`: used by the caller to signal if the request should be cancelled. May be null.

Returns
`Cursor`	This value may be `null`.

Throws
`FileNotFoundException`

See also:

DocumentsContract.EXTRA_LOADING

queryRecentDocuments

Added in API level 19

public Cursor queryRecentDocuments (String rootId, 
                String[] projection)

Recent documents do not support change notifications.

Parameters
`rootId`	`String`
`projection`	`String`: list of `Document` columns to put into the cursor. If `null` all supported columns should be included.

Returns
`Cursor`

Throws
`FileNotFoundException`

See also:

DocumentsContract.EXTRA_LOADING

queryRoots

Added in API level 19

public abstract Cursor queryRoots (String[] projection)

Return all roots currently provided. To display to users, you must define at least one root. You should avoid making network requests to keep this request fast.

Each root is defined by the metadata columns described in Root, including Root.COLUMN_DOCUMENT_ID which points to a directory representing a tree of documents to display under that root.

If this set of roots changes, you must call ContentResolver.notifyChange(Uri, android.database.ContentObserver, boolean) with DocumentsContract.buildRootsUri(String) to notify the system.

Parameters
`projection`	`String`: list of `Root` columns to put into the cursor. If `null` all supported columns should be included.

Returns
`Cursor`

Throws
`FileNotFoundException`

querySearchDocuments

Added in API level 29

public Cursor querySearchDocuments (String rootId, 
                String[] projection, 
                Bundle queryArgs)

Return documents that match the given query under the requested root. The returned documents should be sorted by relevance in descending order. How documents are matched against the query string is an implementation detail left to each provider, but it's suggested that at least Document.COLUMN_DISPLAY_NAME be matched in a case-insensitive fashion.

To support change notifications, you must Cursor.setNotificationUri(ContentResolver, Uri) with a relevant Uri, such as DocumentsContract.buildSearchDocumentsUri(String, String, String). Then you can call ContentResolver.notifyChange(Uri, android.database.ContentObserver, boolean) with that Uri to send change notifications.

Parameters
`rootId`	`String`: the root to search under. This value cannot be `null`.
`projection`	`String`: list of `Document` columns to put into the cursor. If `null` all supported columns should be included.
`queryArgs`	`Bundle`: the query arguments. `DocumentsContract.QUERY_ARG_EXCLUDE_MEDIA`, `DocumentsContract.QUERY_ARG_DISPLAY_NAME`, `DocumentsContract.QUERY_ARG_MIME_TYPES`, `DocumentsContract.QUERY_ARG_FILE_SIZE_OVER`, `DocumentsContract.QUERY_ARG_LAST_MODIFIED_AFTER`. This value cannot be `null`.

Returns
`Cursor`	cursor containing search result. Include `ContentResolver.EXTRA_HONORED_ARGS` in `Cursor` extras `Bundle` when any QUERY_ARG_* value was honored during the preparation of the results. This value may be `null`.

Throws
`FileNotFoundException`

See also:

querySearchDocuments

Added in API level 19

public Cursor querySearchDocuments (String rootId, 
                String query, 
                String[] projection)

Parameters
`rootId`	`String`: the root to search under.
`query`	`String`: string to match documents against.
`projection`	`String`: list of `Document` columns to put into the cursor. If `null` all supported columns should be included.

Returns
`Cursor`

Throws
`AuthenticationRequiredException`	If authentication is required from the user (such as login credentials), but it is not guaranteed that the client will handle this properly.
`FileNotFoundException`

See also:

removeDocument

Added in API level 24

public void removeDocument (String documentId, 
                String parentDocumentId)

Removes the requested document or a document tree.

In contrast to deleteDocument(String) it requires specifying the parent. This method is especially useful if the document can be in multiple parents.

It's the responsibility of the provider to revoke grants if the document is removed from the last parent, and effectively the document is deleted.

Parameters
`documentId`	`String`: the document to remove.
`parentDocumentId`	`String`: the parent of the document to move.

Throws
`AuthenticationRequiredException`	If authentication is required from the user (such as login credentials), but it is not guaranteed that the client will handle this properly.
`FileNotFoundException`

renameDocument

Added in API level 21

public String renameDocument (String documentId, 
                String displayName)

Rename an existing document.

If a different Document.COLUMN_DOCUMENT_ID must be used to represent the renamed document, generate and return it. Any outstanding URI permission grants will be updated to point at the new document. If the original Document.COLUMN_DOCUMENT_ID is still valid after the rename, return null.

Parameters
`documentId`	`String`: the document to rename.
`displayName`	`String`: the updated display name of the document. The provider may alter this name to meet any internal constraints, such as avoiding conflicting names.

Returns
`String`

Throws
`AuthenticationRequiredException`	If authentication is required from the user (such as login credentials), but it is not guaranteed that the client will handle this properly.
`FileNotFoundException`

revokeDocumentPermission

Added in API level 21

public final void revokeDocumentPermission (String documentId)

Revoke any active permission grants for the given Document.COLUMN_DOCUMENT_ID, usually called when a document becomes invalid. Follows the same semantics as Context.revokeUriPermission(Uri, int).

Parameters
`documentId`	`String`

update

Added in API level 19

public final int update (Uri uri, 
                ContentValues values, 
                String selection, 
                String[] selectionArgs)

Implementation is provided by the parent class. Throws by default, and cannot be overridden.

Parameters
`uri`	`Uri`: The URI to query. This can potentially have a record ID if this is an update request for a specific record. This value cannot be `null`.
`values`	`ContentValues`: A set of column_name/value pairs to update in the database. This value may be `null`.
`selection`	`String`: An optional filter to match rows to update. This value may be `null`.
`selectionArgs`	`String`: This value may be `null`.

Returns
`int`	the number of rows affected.