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문자


ThumbnailUtils

版本：Android 3.0 r1

结构

继承关系

public class ThumbnailUtils extends Object

java.lang.Object

android.media.ThumbnailUtils

类概述

为媒体生成常规缩略图。（Android123：该类为Android2.2新增类，可以帮助我们从mediaprovider中获取系统中的视频或图片文件的缩略图）

常量

public static final int OPTIONS_RECYCLE_INPUT

常量用于表示应该回收extractThumbnail(Bitmap, int, int, int)输入源图片(第一个参数)，除非输出图片就是输入图片。

常量值：2 (0x00000002)

公共方法

public static Bitmap createVideoThumbnail (String filePath, int kind)

创建一张视频的缩略图。如果视频已损坏或者格式不支持可能返回null。

参数

filePath 视频文件路径

kind 可以为MINI_KIND 或MICRO_KIND

public static Bitmap extractThumbnail (Bitmap source, int width, int height, int options)

创建所需尺寸居中缩放的位图。

参数

source 原始位图源

width 目标宽

height 目标高

options 在缩略图抽取时提供的选项

public static Bitmap extractThumbnail (Bitmap source, int width, int height)

创建所需尺寸居中缩放的位图。

参数

source 原始位图源

width 目标宽

height 目标高

补充

文章链接

ThumbnailUtils - Android2.2新增类 (Android123)

[推荐]Android缩略图类源代码 (Android123)
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