Android API Chinese (112) -- ThumbnailUtils

Preface

This chapter describes android. media. ThumbnailUtils and its version is Android 3.0 r1! I look forward to your participation in Android API translation, contact me over140@gmail.com.

 

Statement

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Body

I. Structure

Public class ThumbnailUtils extends Object

Java. lang. Object

Android. media. ThumbnailUtils

 

Ii. Overview

Generate regular thumbnails for the media. (Android123: this class is a new class added to Android2.2, which can help us retrieve thumbnails of video or image files in the system from mediaprovider)

 

3. Constants

Public static final intOPTIONS_RECYCLE_INPUT

Constants are used to indicate that they should be recycled.extractThumbnail(Bitmap, int, int, int)Enter the source image (the first parameter) unless the output image is the input image.

Constant Value: 2 (0x00000002)

 

Iv. Public Methods

Public static BitmapCreateVideoThumbnail(String filePath, int kind)

Create a thumbnail of a video. If the video is damaged or the format is not supported, null may be returned.

Parameters

FilePath: Specifies the video file path.

Kind can be MINI_KIND or MICRO_KIND

 

Public static BitmapExtractThumbnail(Bitmap source, int width, int height, int options)

Create a bitmap with the required size and center scaling.

Parameters

Source

Width

Height: Target height

Options

 

Public static BitmapExtractThumbnail(Bitmap source, int width, int height)

Create a bitmap with the required size and center scaling.

Parameters

Source

Width

Height: Target height

 

5. Supplement

Article Link

ThumbnailUtils-Android2.2 new class (Android123)

[Recommended] source code of the Android thumbnail class (Android123)