Wikitude

 

 Hello !

I'm currently experiencing some issues with HtmlDrawable.

Here's my code (simplified) :

 

{
...
this.myHtmlDrawable = new AR.HtmlDrawable({html: "<div><p>" + myVar + "</p></div>}, varWidth, varOptions);
this.myGeoObject.drawables.addCamDrawable(this.myHtmlDrawable);

...
}
...
updateMyVar = function(myNewVar) {
    this.myHtmlDrawable.html = "<div><p>" + myNewVar + "</p></div>";
}

 

 

It works prefectly when i create the HtmlDrawable but when I try to update it, it's very slow and I get the following message in my console for each update :

 

W/cr_AxContents: onDetachedFromWindow called when already detached. Ignoring
I/cr_Ime: ImeThread is not enabled.
W/cr_ScreenOrientation: Removing an inexistent observer!

 

Moreover, after about 6-7min with one update per second, the whole app freezes.

I have seen this post : Performance with HtmlDrawable where you say that they induce low performance but this is a very light html here and it's not just performance issue since it freezes the app.

Am I missing an important point or are HtmlDrawable just un-usable (or at least "un-updatable") ?

thanks,

Vivien

PS : I know I could use a Label instead but I'd prefer to have more custom options (chose a specific font for example...)

Hi Alex
thanks for your answer,

I'm currently using a NVidia Shield K1 tablet with Android 7.0 and Wikitude 6.1.
Unfortunately, I can't test my app on another device but this one seemed to have some pretty decent specs.

In my scene, I'm displaying 3 GeoObject each including 2 models (45Ko and 370Ko), 2 ImageDrawables (2.5Ko and 4.9Ko) and 2 HtmlDrawable. Most of those drawables are updated each second.

by "cleaning" the code to get the minimal version, I noticed the app seemed to run a bit faster but it still freezes after some time (I got now ~20 min)
(running in debug mode on android 2.2.3)

Also, is it possible to use a buffer to avoid the HtmlDrawable to flicker when updating ?

 

 and here are my source files

Hi Alex,

I am indeed currently using Labels and it works well but in the end I will display around 10 Labels per GeoObject and I thought it would be easier (and "cleaner") to use a single HtmlDrawable to gather them. Plus the HtmlDrawable would allow more customisation.

Thanks for your time anyway, I'll keep using Labels for now.
Would you have maybe a date for the next release ?

Sincerly,

Vivien