It's not a bug. I'm guessing you were expecting AlertDialog.show() to block until the user makes the choice, but that's not how it works. It's easy to make this work though: simply don't call super.onKeyDown() when the user pressed the back button. That will keep the system from ending your activity. Then just call finish() when you do want to end the activity.
On Thu, May 28, 2009 at 9:36 PM, Rob Franz <[email protected]> wrote: > > Hi all, > I've got something simple where I want to raise an AlertDialog after > catching this keypress: > > @Override > public boolean onKeyDown(int keyCode, KeyEvent event){ > super.onKeyDown(keyCode, event); > switch (keyCode){ > > case KeyEvent.KEYCODE_BACK: > alertDialog= new AlertDialog.Builder(this).create(); > alertDialog.setTitle("Option"); > alertDialog.setMessage("Perform?"); > alertDialog.setButton("Yes", new > DialogInterface.OnClickListener > () { > public void onClick(DialogInterface dialog, > int whichButton) { > setResult(RESULT_OK); > finish(); > }}); > alertDialog.setButton("No", new > DialogInterface.OnClickListener > () { > public void onClick(DialogInterface dialog, > int whichButton) { > }}); > alertDialog.show(); > break; > > default: > break; > > } > return true; > } > > The interesting thing here is that when you hit the back button, you > *do* see the AlertDialog for a split second, but then you're back at > the previous screen you were at. Almost as if the system is hellbent > on sending the user back to the previous screen, regardless of what > the developer has constructed around this event. > > Anyone else see this behavior? I'm using 1.5r2 here. Any help would > be appreciated - I'm pretty sure I'm using this correctly and that > this is a bug. > > Thanks > Rob > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
