android.graphics.Bitmap

最新推荐文章于 2021-05-28 16:01:58 发布

吴朗

最新推荐文章于 2021-05-28 16:01:58 发布

阅读量2k

点赞数

分类专栏：翻译文档文章标签： Android bitmap

翻译文档专栏收录该内容

41 篇文章

订阅专栏

本文详细介绍了Android中Bitmap类的compress方法，该方法用于将Bitmap压缩并写入指定的输出流。文章解释了压缩格式、质量参数及输出流的使用，并说明了压缩后的Bitmap可能存在的配置变化。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

android.graphics.Bitmap

public final class Bitmap extends Object implements Parcelable

方法:

public boolean compress //压缩,压紧 (Bitmap.CompressFormat format, int quality//质量, OutputStream stream)

Added in API level 1

Write a compressed version of the bitmap to the specified outputstream. If this returns true, the bitmap can be reconstructed//重建的,改造的 by passing a corresponding //相应的,一致的inputstream to BitmapFactory.decodeStream(). Note: not all Formats support all bitmap configs//配置 directly, so it is possible that the returned bitmap from BitmapFactory could be in a different bitdepth, and/or may have lost per-pixel alpha (e.g. JPEG only supports opaque//不透明 pixels).

Parameters

format	The format of the compressed image
quality	Hint to the compressor, 0-100. 0 meaning compress for small size, 100 meaning compress for max quality. Some formats, like PNG which is lossless//无损的, will ignore//忽略 the quality setting
stream	The outputstream to write the compressed data.