Note: This question regards Gingerbread running on a crespo4g target. I'm modifying the Keyguard and associated security Settings to include an external authentication option to unlock the screen. I'd like to use a ProgressDialog while attempting to validate the login, but it does not appear to work in the Keyguard. I'm basing my new code in part on the AccountUnlockScreen.java code. I noticed that the existing AccountUnlockScreen.java seems to call a ProgressDialog as well, but it never appears when the stock AccountUnlockScreen is run.
I've done my prototyping in a standard Activity just to figure out the process I want to use. In that activity, I use an AsyncTask to display the ProgressDialog spinner and run the long-ish external authentication. It works perfectly there, just as I'd expect, but does not work the same in the Keyguard. The code will compile, but I get a runtime error on the ProgressDialog show() function stating: "Unable to add window -- token null is not for an application". I then just tried to no-op the login and put the ProgressDialog with a Thread.sleep without using AsyncTask. The dialog never appears and no errors occur to explain why. When I search for answers on Google, I see other people have used the wrong context (getActivityContext() or something similar) will get this error. In my case, I'm using the context passed into the class which works correctly when launching a standard AlertDialog message. Has anyone got a suggestion on where to go from here? Do I need to dummy up my own dialog or draw it using layout primitives and hide/ show it? Thanks in advance. Tony -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
