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Publishing HTML5 with Javascript for all devices

Explorer ,
Feb 01, 2019 Feb 01, 2019

Hi, can you help me. I am in the process of creating a HTML5 (canvas) interactive application for a website. and it has Javascript actions. This works fine on Desktop PC when pressing TEST MOVIE. Many viewers will be using IOS or Android, will it work okay on their devices too as its HTML5/Javascript and they will be viewing it via the website? Im sure Javascript/HTML5 is compatible with all devices so I just need to create this one HTML file with the JS file to accompany it? Also, how do I test the file for Android / IOS because  when I publish I use the mouse, but for Android etc its touch screen so I need to make sure my file is consistent etc. Thanks

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correct answers 1 Correct answer

Advocate , Feb 02, 2019 Feb 02, 2019

Hi Charlie

It will work okay. Though it's okay like in okayish. What is important is that you evolve with your work, find out with the time what works really fine and what is better to avoid.

There are some issues and pitfalls, and believe me, I am still finding out after creating HTML5/Canvas projects since the beginning of 2016. When Flash Pro became Animate CC. I'll try to list some important points here but they are by no means complete:

Make responsive

Care for and try out the Responsive sectio

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Community Expert ,
Feb 01, 2019 Feb 01, 2019

touch devices aren't good at detecting mouse events like clicks or mouseout, rollover etc.  usually, using mousedown events is all that's needed but you might want to check pressmove and pressup, too.

test on touch devices if you're not sure about something.

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Advocate ,
Feb 02, 2019 Feb 02, 2019

Hi Charlie

It will work okay. Though it's okay like in okayish. What is important is that you evolve with your work, find out with the time what works really fine and what is better to avoid.

There are some issues and pitfalls, and believe me, I am still finding out after creating HTML5/Canvas projects since the beginning of 2016. When Flash Pro became Animate CC. I'll try to list some important points here but they are by no means complete:

Make responsive

Care for and try out the Responsive section in Animate's Publish Settings to adapt your presentation to different viewport sizes.

Screenshot 2019-02-02 at 12.52.10.png

Learn more: Publishing animations to HTML5

Image Settings

In this context consider also your image settings. If you use a lot of complex vector graphics (maybe coming from Adobe Illustrator), then it can be wise, to Export your document as texture. This is since Animate 2019 the default in Publish Settings. What it does is it splits your vector components into basic shapes, rasterizes them and exports them as spritesheets. Adobe states that Choosing a vector or raster file is like a choice between file sizes and performance. HTML5 platforms are optimized for raster content.

Learn more: Texture publishing

Dynamic Text and Webfonts

Try not to use Static Text where ever that is possible. Only for purposes of precise placing (e.g. "Start Here" on a start touch/button) Static makes sense. Otherwise use Dynamic Textfields in combination with web fonts, either Adobe or Google fonts. If you use Static text and Export document as texture is off, all static text is converted to shapes and coded into the export JS file. If Export as texture is on static textfile will be rasterized and added to your spritesheets. However learn more about web fonts Using Google Fonts and Working with Adobe Fonts.

Tween classic

When making tween animations  Classic Tween is the prefered method. Motion Tweens in HTML5 will be converted to Frame-by-Frame animations.

Think Canvas

Javascript/HTML5 creations are drawn into a <Canvas> element. A Canvas is a rectangular area defined by width and height within a HTML document in which raster 2D shapes can be drawn and manipulated with Javascript (Canvas API).  Although it works mostly quite fine in web browsers on mobile devices, it isn't so fast and crispy as Native Apps. And because it's a kind of indirect way to display a presentation (through the browser and through the canvas), some say it's quite expensive in terms of CPU power. Learn more: Canvas API

CreateJS modular Suite

Under the hood in Animate CC for exporting to HTML5/Canvas lies the CreateJS Library which consists of 4 modules EaselJS, TweenJS, SoundJS and PreloadJS. Hence the APIs of CreateJS are something to be aware of and to consult for learning about the basic structure of what we are dealing with.

Learne more: CreateJS and the essential module EaselJS API and here in particular EaselJS Mouse Interaction. See in this context also this entire manual: Create and publish HTML5 Canvas documents in Animate CC.

Consider Viewport Orientation

Because it's a canvas which displays a HTML5 creation out of Animate, we are bound to a Stage and stage coordinates where everything happens. This is good and bad. On one hand it allows a relative free and careless placing of our visual elements across the stage. On the other hand it doesn't make our contents fluid or responsive in the sense as responsive or fluid web design does (e.g. Flexbox, CSS Grid, Media Queries, Breakpoints etc). When we have a stage with Landscape orientation, say an aspect ratio of 16:9, on a mobile phone with Portrait orientation (1:2) the stage proportions remain the same and everything looks very small and isn't filling this viewport optimally.

Like this:

Screenshot_20190202-151848_Chrome.jpg

A display like this can only be improved by basically creating two Animate versions and layouts, one landscape and one portrait, and using Javascript to detect the viewport proportions and serving an appropriate version accordingly.

Mouse vs Touch

As kglad already pointed out, mobile devices aren't good in detecting events like mouseover or mouseout, because these are no real touch events. These events should be avoided for essential functionality when you are worried about touch devices. Regarding click they are actually good enough when you make sure that the interactive area to click is large enough even on small viewports. When Click (Touch) happens on a mobile viewport, a number of events happen simultaneously: touchstart -> touchmove -> touchmove -> mouseover -> mousemove -> mousedown -> mouseup -> CLICK -> and possibly mouseout. Learn more: Touch and Mouse

In EaselJS are special mouse (touch) events like pressmove and pressup. They become important in touch-intense applications like e.g. Drag&Drop. Also important is createjs.Touch.enable(stage); See here.

Heartbeat Tick

In EaselJS the Ticker provides a centralized tick or heartbeat broadcast at a set interval. Listeners can subscribe to the tick event to be notified when a set time interval has elapsed. Learn more: Ticker Class

In the end I like to add some essentials written by a clever guy here in the Forum.

-> Re: Keep button state (by JoãoCésar, starting with "Excellent!".)

Klaus

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Explorer ,
Feb 04, 2019 Feb 04, 2019

Thanks both for the response. But I think you both think I want to do more than I actually need to.

I am using adobe Animate HTML5. Within this, once published as a HTML file, it will run on our corporate website. I dont need it to work standalone on IOS or Android, I just need it to work on Android and Apple via their browser.

Now if what you posted originally is correct, do I need to learn a load of languages, one for Android and One for IOS? I just wanted to use the basic javascript to go to and from labels layer using actions layer.

The conver to to option seems pointless to me. It just comments out all your code. So I tak eit all this code needs to be re-written in IOS and Android Code.

So what you are implying is for my HTML interactive application to run on Windows, IOS and Android, I need to create three applications (FLA files) with different code in each one?

Thanks for your help and please appreciate I am up in arms at the moment with all this uncertainty.

If your response which was in depth (thanks!) was the only way to go ill revisit it. But surely I can create a HTML5 app and it works on any HTML5 supported browser. I thought thats the whole point in HTML5/Javascript standardizing and Flash being ousted etc.

Appreciated.

kind regards

Charlie

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Advocate ,
Feb 04, 2019 Feb 04, 2019

Hi Charlie

charliep11645294  wrote

So what you are implying is for my HTML interactive application to run on Windows, IOS and Android, I need to create three applications (FLA files) with different code in each one?

No, no, no I am not implying that. As far as my post is concerned I just wanted to provide you with some tips and considerations for working with HTML5/Canvas and Animate CC / CreateJS. Just go on and do that, maybe at some stage you will come across certain issues and you might remember points I mentioned in my post.

Klaus

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Explorer ,
Feb 04, 2019 Feb 04, 2019

p.s Im just using Animate to make the content for the website, im not a web developer.

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Explorer ,
Feb 04, 2019 Feb 04, 2019

Klaus,

Ive implemented already a lot of what you recommended. The Create JS seems interesting. Thanks ever so much for your help and detailed response which I can and will use as a foundation going forward.

Charlie

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Community Expert ,
Feb 04, 2019 Feb 04, 2019
LATEST

message 1 contains all the info you'll probably need.  if it doesn't, read message 2.

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