[android-developers] Re: How to save a Bitmap instance to a *.bmp file.

Sat, 27 Jun 2009 12:22:32 -0700 

楊健 wrote:
>  How can i save a Bitmap instance to a *.bmp file?Anyone knows?

Option #1: Don't do it. So, for example, if this is a question of
uploading data to some server, let the server do the conversion from PNG.

Option #2: See if there is a way, through the implementation of Bitmap
in the open source code, for C/C++ code to get its hands on the raw byte
array that is the image. Then, use the newly-released NDK to write
yourself a utility method somewhere that works like compress(), but
writes out BMP files, perhaps using some existing BMP-encoding C code
you find somewhere.

> Is it strange that we can only save a bitmap instance to a png or jpg
> file?

No. BMP files are huge (compared to a PNG edition of the same image),
and huge is not something you typically want on a mobile phone.

-- 
Mark Murphy (a Commons Guy)
http://commonsware.com | http://twitter.com/commonsguy

_Android Programming Tutorials_ Version 1.0 Available!

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