Sunday, June 01, 2008

Quick and Easy Flash Prototypes

An online tutorial on flash prototyping ...

"To tackle the classic “how to prototype rich interactions” problem, I developed a process for translating static screen designs (from wireframes to visual comps) into interactive experiences using Flash. Requiring some fairly basic ActionScript knowledge, these prototypes proved to be a quick yet powerful way to bring interaction designs to life.

When asked if I could find a quick and easy way to prototype a web application my project team had wireframed in Visio, I first turned to PDF prototyping. Using a PDF of the wireframes as the base, I overlaid clickable elements and some interactive data entry fields. Everything was wonderful—until the client asked us to add color to the wireframes. The Visio document was updated, a new PDF had to be made… and all that interactivity had to be reapplied. (It is tedious and time-consuming to replace page content in a PDF.)

Not wanting to repeat this tedious process again and again, I turned to Flash. I was excited to find that Flash not only felt more streamlined and intuitive when creating basic click-throughs, but it also offered almost limitless potential for prototyping rich interactions. With some basic ActionScript (a scripting language used in Flash to define interactions) knowledge and a bit of resourcefulness, I was able to create functional combo box navigations, type-ahead mechanisms, and eventually a complex, drag-and-drop scheduling application similar to Google Calendar. And whenever the screen designs changed, all I had to do was import the new background images, while the interactivity layers stayed happily in place, requiring only minimal tweaking.

Quick and easy yet powerful and flexible

The idea of working with Flash may seem daunting, but the effort required to create a basic click-through is comparable to that required by other applications, while the flexibility and potential for extending the prototype is far greater. (After all, Flash was designed for creating interactive applications, not presentations [like PowerPoint], diagrams [like Visio] or portable documents [like Acrobat].) Considering the additional benefits it offers, Flash prototyping is well-worth adding to your interaction design toolkit:


* Flash prototyping allows you to add interactivity to screen designs and wireframes you’ve already created. You don’t have to recreate the layouts in another application.
* Flash allows screen images to be updated without losing your interactive layers, which is much more difficult in PDF prototyping, as I described above.
* Flash includes a robust library of customizable user interface components that can be dropped into your prototype and used as they are to add realism (e.g., a text field you can actually type in) or programmed using ActionScript to serve as fully-functional interface controls.
* You can export prototypes as stand-alone applications (suitable for running from a thumb-drive at an on-site usability test where the Flash plugin may be blocked) or as HTML pages with embedded Flash (in which the browser can be used to scroll up and down through tall prototypes).
* You don’t have to hire a professional Flash developer to achieve all of this. (I’m certainly not a Flash expert.) You can create simple, yet believable, prototypes with very little knowledge of ActionScript. All it takes is resourcefulness, creativity, and experimentation.

A valuable tool and impressive deliverable

Flash prototypes can be both a valuable tool for project teams and an impressive deliverable for clients. At the consultancy where I first employed Flash prototyping, these prototypes quickly became an invaluable part of the design, testing and buy-in process for many projects, and clients loved them. Here’s why:

By experiencing the interactions we were proposing, we were able to quickly sense when something that seemed good on paper didn’t feel right in reality.

By testing realistic prototypes, which users perceived to fully-functional, we were able to collect accurate user feedback about how novel interactions (such as a type-ahead search) felt and functioned in a real context.

By providing clients with functional demos, we were able to see our concepts move towards reality as clients enthusiastically used them to rally organizational support for concepts.

Having learned a lot through trial and error in creating these prototypes, I’d now like to share the process I developed through a step-by-step tutorial."    (Continued via Boxes and Arrows, Alexa Andrzejewski)    [Usability Resources]

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