Read and write binary data

[Alipvke]

I want to read and write a midi and gif file, to make a midi editor and gif editor. How to read (and write) a file binarily?

[Aaron Christophel]

Maybe it is possible to open it as a text file?

[Steve Garman]

If you know exactly what you are doing with the file formats, you can open the files for random access http://wiki.droidscript.me.uk/doku.php?id=sample_code:random_file_acces

Unless you are making very small byte-for-byte changes, you will almost certainly need to read from a source file and write to a destination file

This is not a method that is appropriate for a novice. You will probably need to know the formats inside out and understand how to indicate in the format that a record has a specific length etc.