Android : Floating Clickable Icon over Screen?

问题

There's an Android Application called Smart Taskbar that manages to Pin a small SemiTransparent Icon over the screen...The icon remains visible over ALL the activites (including the home screen). The Icon is Clickable (/Touchable), and it does popopen a Small Popup window which the user can interact with.

I'm very interested in how this is done? I think it's something to with PopupWindow.

Any ideas? Thanks in Advance.

回答1:

I recently experimented with this.

See this question: Creating a system overlay window (always on top) - the solution is virtually the same, but you need to set TYPE_SYSTEM_ALERT in the layout params instead of TYPE_SYSTEM_OVERLAY.

回答2:

Late but here is a complete tutorial which demonstrates the whole scene https://droidqd.wordpress.com/2015/01/07/how-to-make-a-floating-face-bubble-on-home-screen-in-android/

回答3:

Try this open source project, which worked for me Android chat head

来源：https://stackoverflow.com/questions/3732935/android-floating-clickable-icon-over-screen