MediaStore.Images.Thumbnails MediaStore.Images.Thumbnails

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概述

public static class

MediaStore.Images.Thumbnails

extends Object
implements BaseColumns

java.lang.Object
↳	android.provider.MediaStore.Images.Thumbnails

Class Overview

This class allows developers to query and get two kinds of thumbnails: MINI_KIND: 512 x 384 thumbnail MICRO_KIND: 96 x 96 thumbnail

Summary

Constants
String	DATA	The data stream for the thumbnail Type: DATA STREAM
String	DEFAULT_SORT_ORDER	The default sort order for this table
int	FULL_SCREEN_KIND
String	HEIGHT	The height of the thumbnail Type: INTEGER (long)
String	IMAGE_ID	The original image for the thumbnal Type: INTEGER (ID from Images table)
String	KIND	The kind of the thumbnail Type: INTEGER (One of the values below)
int	MICRO_KIND
int	MINI_KIND
String	THUMB_DATA	The blob raw data of thumbnail Type: DATA STREAM
String	WIDTH	The width of the thumbnal Type: INTEGER (long)

[Expand] Inherited Constants
From interface android.provider.BaseColumns

Fields
public static final Uri	EXTERNAL_CONTENT_URI	The content:// style URI for the "primary" external storage volume.
public static final Uri	INTERNAL_CONTENT_URI	The content:// style URI for the internal storage.

Public Constructors
	MediaStore.Images.Thumbnails()

Public Methods
static void	cancelThumbnailRequest( ContentResolver cr, long origId) This method cancels the thumbnail request so clients waiting for getThumbnail will be interrupted and return immediately.
static void	cancelThumbnailRequest( ContentResolver cr, long origId, long groupId) This method cancels the thumbnail request so clients waiting for getThumbnail will be interrupted and return immediately.
static Uri	getContentUri( String volumeName) Get the content:// style URI for the image media table on the given volume.
static Bitmap	getThumbnail( ContentResolver cr, long origId, long groupId, int kind, BitmapFactory.Options options) This method checks if the thumbnails of the specified image (origId) has been created.
static Bitmap	getThumbnail( ContentResolver cr, long origId, int kind, BitmapFactory.Options options) This method checks if the thumbnails of the specified image (origId) has been created.
final static Cursor	query( ContentResolver cr, Uri uri, String[] projection)
final static Cursor	queryMiniThumbnail( ContentResolver cr, long origId, int kind, String[] projection)
final static Cursor	queryMiniThumbnails( ContentResolver cr, Uri uri, int kind, String[] projection)

[Expand] Inherited Methods
From class java.lang.Object

Constants

public static final String DATA

Added in API level 1

The data stream for the thumbnail

Type: DATA STREAM

Constant Value: "_data"

public static final String DEFAULT_SORT_ORDER

Added in API level 1

The default sort order for this table

Constant Value: "image_id ASC"

public static final int FULL_SCREEN_KIND

Added in API level 1

Constant Value: 2 (0x00000002)

public static final String HEIGHT

Added in API level 1

The height of the thumbnail

Type: INTEGER (long)

Constant Value: "height"

public static final String IMAGE_ID

Added in API level 1

The original image for the thumbnal

Type: INTEGER (ID from Images table)

Constant Value: "image_id"

public static final String KIND

Added in API level 1

The kind of the thumbnail

Type: INTEGER (One of the values below)

Constant Value: "kind"

public static final int MICRO_KIND

Added in API level 1

Constant Value: 3 (0x00000003)

public static final int MINI_KIND

Added in API level 1

Constant Value: 1 (0x00000001)

public static final String THUMB_DATA

Added in API level 5

The blob raw data of thumbnail

Type: DATA STREAM

Constant Value: "thumb_data"

public static final String WIDTH

Added in API level 1

The width of the thumbnal

Type: INTEGER (long)

Constant Value: "width"

Fields

public static final Uri EXTERNAL_CONTENT_URI

Added in API level 1

The content:// style URI for the "primary" external storage volume.

public static final Uri INTERNAL_CONTENT_URI

Added in API level 1

The content:// style URI for the internal storage.

Public Constructors

public MediaStore.Images.Thumbnails ()

Added in API level 1

Public Methods

public static void cancelThumbnailRequest (ContentResolver cr, long origId)

Added in API level 5

This method cancels the thumbnail request so clients waiting for getThumbnail will be interrupted and return immediately. Only the original process which made the getThumbnail requests can cancel their own requests.

Parameters

cr	ContentResolver
origId	original image id

public static void cancelThumbnailRequest (ContentResolver cr, long origId, long groupId)

Added in API level 8

Parameters

cr	ContentResolver
origId	original image id
groupId	the same groupId used in getThumbnail.

public static Uri getContentUri (String volumeName)

Added in API level 1

Get the content:// style URI for the image media table on the given volume.

Parameters

volumeName	the name of the volume to get the URI for

Returns

the URI to the image media table on the given volume

public static Bitmap getThumbnail (ContentResolver cr, long origId, long groupId, int kind, BitmapFactory.Options options)

Added in API level 8

This method checks if the thumbnails of the specified image (origId) has been created. It will be blocked until the thumbnails are generated.

Parameters

cr	ContentResolver used to dispatch queries to MediaProvider.
origId	Original image id associated with thumbnail of interest.
groupId	the id of group to which this request belongs
kind	The type of thumbnail to fetch. Should be either MINI_KIND or MICRO_KIND.
options	this is only used for MINI_KIND when decoding the Bitmap

Returns

A Bitmap instance. It could be null if the original image associated with origId doesn't exist or memory is not enough.

public static Bitmap getThumbnail (ContentResolver cr, long origId, int kind, BitmapFactory.Options options)

Added in API level 5

This method checks if the thumbnails of the specified image (origId) has been created. It will be blocked until the thumbnails are generated.

Parameters

cr	ContentResolver used to dispatch queries to MediaProvider.
origId	Original image id associated with thumbnail of interest.
kind	The type of thumbnail to fetch. Should be either MINI_KIND or MICRO_KIND.
options	this is only used for MINI_KIND when decoding the Bitmap

Returns

A Bitmap instance. It could be null if the original image associated with origId doesn't exist or memory is not enough.

public static final Cursor query (ContentResolver cr, Uri uri, String[] projection)

Added in API level 1

public static final Cursor queryMiniThumbnail (ContentResolver cr, long origId, int kind, String[] projection)

Added in API level 1

public static final Cursor queryMiniThumbnails (ContentResolver cr, Uri uri, int kind, String[] projection)

Added in API level 1

最后

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本文分类：android
浏览次数：45 次浏览
发布日期：2024-10-18 22:15:02
本文链接：https://www.kaopuke.com/article/k-p-k_13_u_7_o_10_f5_14_jc0.html

MediaStore.Images.Thumbnails MediaStore.Images.Thumbnails

概述

MediaStore.Images.Thumbnails

Class Overview

Summary

Constants

public static final String DATA

public static final String DEFAULT_SORT_ORDER

public static final int FULL_SCREEN_KIND

public static final String HEIGHT

public static final String IMAGE_ID

public static final String KIND

public static final int MICRO_KIND

public static final int MINI_KIND

public static final String THUMB_DATA

public static final String WIDTH

Fields

public static final Uri EXTERNAL_CONTENT_URI

public static final Uri INTERNAL_CONTENT_URI

Public Constructors

public MediaStore.Images.Thumbnails ()

Public Methods

public static void cancelThumbnailRequest (ContentResolver cr, long origId)

Parameters

public static void cancelThumbnailRequest (ContentResolver cr, long origId, long groupId)

Parameters

public static Uri getContentUri (String volumeName)

Parameters

Returns

public static Bitmap getThumbnail (ContentResolver cr, long origId, long groupId, int kind, BitmapFactory.Options options)

Parameters

Returns

public static Bitmap getThumbnail (ContentResolver cr, long origId, int kind, BitmapFactory.Options options)

Parameters

Returns

public static final Cursor query (ContentResolver cr, Uri uri, String[] projection)

public static final Cursor queryMiniThumbnail (ContentResolver cr, long origId, int kind, String[] projection)

public static final Cursor queryMiniThumbnails (ContentResolver cr, Uri uri, int kind, String[] projection)

最后

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