Those dark spinning progress dialogs in the Amazon and Engadget apps - are those standard in Android?
How to create loading dialogs in Android?
It's a ProgressDialog, with setIndeterminate(true).
ProgressDialog dialog = ProgressDialog.show(MyActivity.this, "", "Loading. Please wait...", true);
An indeterminate progress bar doesn't actually show a bar, it shows a spinning activity circle thing. I'm sure you know what I mean :)
Today things have changed a little.
Now we avoid use ProgressDialog to show spinning progress:
If you want to put in your app a spinning progress you should use an Activity indicators: