I asked this on the mailing list, but thought I might as well also post it here :)
I'm working on a QML based app. where I dynamically load 'sub' applications or plugins at runtime. However when running on maemo, loading of all the QML files of such a sub-app. takes quite a long time (5-10 secs, enough for the end user to be annoyed), so I'm wondering if there is a way to at least show an animated loading screen while this is going on. I've tried a couple of things, but haven't really found a satisfying solution:
- Wrap the QML in a Loader: This allows me to show a static loading screen, but as soon as I ask the loader to load the rest of the QML content, all animation is blocked while it's loading.
- Load the QML in a background thread: This fails because the QML contains a lot of images which in turn creates QPixmaps, which doesn't work from another thread than the main ui thread :(
I've done a number of things to speed up the actual loading itself, but I don't think I can get it much faster:
- Prefetch the QML, i.e. have the QML engine load the same QML file so it caches the parsed version of the QML
- Prefetch images, i.e. have the image loaded into QPixmapCache ahead of time
Any help appreciated,