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Base64 encoding is a very useful technique that allows for the sending of binary data, such as an image file, over the wire using plain-text. This means it can be embedded in XML (plain, SOAP or XML-RPC), it also means the binary data can be stored very easily in a database. It works by reading in data in packs of 6 bits, and turning each one of those into a character in a simple 64 character alphabet. This input data can be text, but it can also be binary data stored in a ByteArray; perhaps the contents of a file, or an MP3 your Flash application has constructed in memory.
Here's a quick tip that might save you some time and bother. If you are doing any Base64 encoding in ActionScript (for example when sending email attachments or uploading images to a blog over XML-RPC) make sure you split your string up into lines of 76 characters (as is defined in the MIME spec), and add an extra line break at the end. Some Base64 decoders do not require this, but in a lot of common cases for Base64 it is required.
There are already several implementations out there of Base64 encoders/decoders for AS2 and AS3, I was under the impression there was an mx.utils.Base64Encoder class in the Flex but I was not able to find it. This tool is very handy for comparing your results. It also gives the option to upload and convert a file, and specify how many characters to use per line (76 being the common case).
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Great tip thanks indeed, I should post the code I'm using to read in from a file soon.
I wanted to ask you, where have you found the mx.utils.Base64Encoder class? It is not available in the Moxie SDK, perhaps in 2.0.1?.
You can find it in the Flex 3 SDK (Movix) at
/frameworks/projects/framework/src/mx/utils
I think its not in the docs but you can use it ;)
I’ve been looking at attending the “Flash on the beach†event down in Brighton and was wondering whether you would be able to give me a further insight into the kinds of ideas and talks that you will be taking.
I’m a third year student studying web and new media; I’ve just started a new module where I intend on progressing my flash skills further, by attempting to produce some kind of motion graphic sequence incorporated in a new game or something new that hasn’t been attempted as of yet. It all seems very broad and vague, which it is, but as part of my module, I need to find out about “what’s new†in the flash era at the moment, what are people in the industry now starting to make, and so was wondering whether you would be able to give me an insight in to what “you†believe is up and coming, and what flash experts are now experimenting with?
It would not only help my understanding of flash more, but would enable me as a student to get my work up to industry standard level.
I’m sorry this email is very broad, but I would just basically like some kind of insight into what different new media professionals such as yourself believe students like me, should take flash, what should we be producing and why.
I really hope to hear from you soon.
Yours sincerely
Marie Williams
var username:String = "username";
var password:String = "password";
var encodedCredentials:String = Base64.encode(username + ":" + password);
var headerArray = new Array(
new URLRequestHeader("Authentication",
"Basic " + encodedCredentials));
request.headers = headerArray;
request.request = { status: tweet_txt.text };
request.send();
;;;;;here tell d error access of undefined property Base64...can u help me
Does any one has an AS file for Flash AS2?
Which will convert the given file to a base64 format? Or where can I find it?
Thanks in advance :)