Excellent info James! FYI: I've seen the fading manifest in AppWidgets prior to froyo. Specifically Googles own 'News and Weather' AppWidget.
sent from my Google Nexus One On 12 Jul 2010 15:45, "James W" <[email protected]> wrote: > I reckon I know how to do it. :o) > > You can get Tween animations in an AppWidget by using the > LayoutAnimation tag in your widget's layout xml, it supports all the > standard Tween animations including Alpha fades. > > The first problem is that the animation only runs when you first add > the Widget to the Home screen, and that RemoteViews xml is first sent. > Subsequent updates using the same XML wont trigger the animation. > However, you can have an identical XML file with a different name, and > then just swap between them when you are updating your remote views. > So every time you update, you get your tween animation. > > Now, to actually get the effect. I dont have 2.2, but I assume it is > similar to the effect at the top of the Market app itself, where a > promoted app picture fades into the next one? > > If so then I would have 2 image views. Set the first one to the show a > picture A. On top of that (higher in the z order) have your other > Image view surrounded with the alpha LayoutAnimation so that it fades > IN, and showing a picture B. > > So when the update occurs you will initially see the original picture > A, and then the new picture B fades in on top of that one so that A is > hidden. > > Then the next time you update, set the first image view to show > picture B, and set the animated image view to now show C, etc. > > It should work... if you can't get it working let me know, I have done > similar things before. > > > For what it is worth this another reason we could do with proper > animations in AppWidgets, it seems a common request, and now we have > the precedent of Google's own Market widget using it. I would be > interested to know if this is something new in 2.2, or they have done > the hacky animation implementation described above? > > I added a feature request to support animations and other common > requests for AppWidget functionality, please anyone feel free to Star > it: > > http://code.google.com/p/android/issues/detail?id=9580&sort=-id&colspec=ID > Type Status Owner Summary Stars&start=100 > > > Regards > James > > > > > > > On Jul 10, 1:53 am, Matt <[email protected]> wrote: >> > Are you talking about an actual AppWidget that sits on the users home >> > screen? I was not aware there was awidgetfor the market. >> >> Yes, it is a part of the Froyo update. It's an actual >> AppWidgetProvider. >> >> > I think it is new for 2.2. After seeing this thread, I found it on my >> > N1. It does what looks like an AlphaAnimation to transition between >> > apps it is promoting. Unless it is actually part of the N1's home >> > screen, I have no idea how they're pulling off that effect. >> >> I am seeing it on a myTouch with Froyo. So it seems it is a part of >> the 2.2 release. >> >> I will look into the AlphaAnimation. I'm just not sure how it is done >> with RemoteViews. What I suspect is that it is something new to the >> 2.2 SDK, which is unfortunate because we can't lock ourwidgetto 2.2 >> and above. >> >> I would still like to hear any other ideas people may have, though! :) >> >> -Matt > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected]<android-developers%[email protected]> > For more options, visit this group at > http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
