Accordion like animation for android - android

I need to build an accordion lie animation and I have no clue where to start.
Can you please address me to resources and sample codes so I can better understand how to do that?
The closest thing I saw on Android is the cord animation in Go Launcher, so I don't know if it is possible, anyway I'd glad to even be able to create something like Go's animation.
Thank you
You can see an example in this screenshot from the iPhone app 'task'
http://www.youtube.com/watch?v=56isCnonYqA&feature=player_embedded#t=38s

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Tasker : create a bubbled floating windows?

What i wanted to do, and didn't find any suitable solution, is :
create a scene in tasker (no problem on doing it :) )
display this scene on overlayed mode on other app (ex: waze,). Overlay is mandatory (as i know but i am maybe wrong) to let's the underlayed application work and refresh screen normally
allow interaction with button on the scene, just like we can do it if i choose the dialog mode for my scene. The problem with dialog mode is that the underlayed apps screen does not refresh.
In fact what i wanted to to is to display some button when i am running waze, to allow me to sens ETA Sms to my wife, or skip to the next track on my musics apps, or close waze quickly.....
As a resume i want to do what is
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but only using tasker
Best regards
Best
Please share some images of your requirements so that we can help you better but anyways I found a solution maybe it'll help you with some little customization.
According to my understanding, you need something like this:
You can download the whole project and customize it according to your requirements from Here

How do you display hint circles in Android?

I'm wondering how to display the "hint circles" (I don't know what they're really called, and I couldn't find it anywhere) when opening an app for the first time. I've seen this in many stock android apps, but not in many third party apps. Is there even a way to do this?
Thanks!
Here is a picture of what i mean. (The blue circle with the OK, not the white one)
there is a library for that, check ShowcaseView
From what I have experienced with these, they seem to just be a form of a splash screen, or another image overlaying the actual app. Even if the stock apps don't handle it like that, couldn't you just have the app open up a new screen that contained a mostly transparent image except for where you want the ring or other hints. Then you can just at a button to that screen, so that after the user has read all of the hints, then they could close the screen.
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http://developer.android.com/reference/android/widget/GridView.html
And I have no idea how is it connected with MonoDevelop.

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