Use of Android tiny integrated picture compression framework

In order to simplify the call to image compression and provide the most concise and reasonable API compression logic, for the compression of bitmap, the optimal size is dynamically adapted according to the screen resolution, and for the compression of file to optimize the underlying libjpeg, the whole image compression process is compressed in different steps in the compression thread pool, and then distributed back to the UI thread.

Supported compression types

Types of compressed data sources supported by tiny picture compression framework:

1、Bytes 2、File 3、Bitmap 4、Stream 5、Resource 6、Uri（network、file、content）

Tiny supports single data source compression and batch compression. Supported compression types:

1. Data source ― > compress as bitmap 2, data source ― > compress as file 3, data source ― > compress as file and return compressed bitmap 4, batch data source ― > batch compress as bitmap 5, batch data source ― > batch compress as file 6, batch data source ― > batch compress as file and return compressed bitmap

Compression parameters

Tiny.BitmapCompressOptions

There are three configurable bitmap compression parameters:

1、width 2、height 3、Bitmap.Config

If not configured, tiny will dynamically adapt according to the screen and use ARGB by default_ eight thousand eight hundred and eighty-eight

Tiny.FileCompressOptions

Four file compression parameters can be configured:

1. Quality - compression quality, the default is 76 2. Iskeepsampling - whether to maintain the width and height of the original data source picture 3. Filesize - compressed file size 4. Outfile - compressed file storage path

If it is not configured, tiny will compress according to the default compression quality. The compressed files are stored in the directory of externalstorage / Android / data / ${packagename} / tiny / by default

Tiny project address: https://github.com/tianyingzhong/Tiny

Compression ratio comparison between tiny and wechat circle of friends

The following is an example of compression effect comparison using tiny picture compression library:

Compress to bitmap

Compress to file

Compress to file and return bitmap

Batch compression to bitmap

Batch compression to file

Batch compress to file and return bitmap

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