I ran into this before. Are you seeing "token null is not for an application" in the log cat? Might be related to this thread: http://groups.google.com/group/android-developers/browse_thread/thread/7a648edddccf6f7d Specifically, this quote from Dianne:
"One cause of this error may be trying to display an application window/dialog through a Context that is not an Activity." I'll bet if you check the type returned from getApplicationContext() it's not the same as "this". On Nov 10, 2:53 pm, Justin Anderson <[email protected]> wrote: > Shoot... I was kinda hoping they were in different parts of your code. I'm > going to have to punt this one off to someone else... > > Anyone? > > ---------------------------------------------------------------------- > There are only 10 types of people in the world... > Those who know binary and those who don't. > ---------------------------------------------------------------------- > > On Tue, Nov 10, 2009 at 1:27 PM, Matt <[email protected]> wrote: > > I have all the following code in my onCreate() method. > > > Toast.makeText(getApplicationContext(), "Hello World!", > > Toast.LENGTH_SHORT).show(); > > AlertDialog.Builder b = new AlertDialog.Builder(getApplicationContext > > ()); > > > [Dialog configuration] > > > b.show(); > > > While the Toast message gets displayed right away, the AlertDialog > > won't. Instead there is a runtime error. Like I said, if you replace > > the "getApplicationContext()" with "this", it works flawlessly. > > > On 10 Nov., 20:44, Justin Anderson <[email protected]> wrote: > > > That's interesting. I've never run into that problem before. It > > probably > > > has something to do with what classes you are in or something like that. > > > > Here's a question... did you try the Toast in the same place where using > > > AlertDialog.Builder gives an error or were they in different parts of > > your > > > code? > > > > Thanks, > > > Justin > > > > ---------------------------------------------------------------------- > > > There are only 10 types of people in the world... > > > Those who know binary and those who don't. > > > ---------------------------------------------------------------------- > > > > On Tue, Nov 10, 2009 at 12:16 PM, Matt <[email protected]> wrote: > > > > Hi everybody, > > > > > can somebody please explain why > > > > > AlertDialog.Builder b = new AlertDialog.Builder(getApplicationContext > > > > ()); > > > > > will result in a runtime error, while > > > > > AlertDialog.Builder b = new AlertDialog.Builder(this); > > > > > will run just fine? I can use "this" and "getApplicationContext()" > > > > with Toast.makeText() interchangeably without any problems. What is > > > > different with that AlertDialog.Builder? Any ideas? > > > > > Cheers, Matt > > > > > -- > > > > You received this message because you are subscribed to the Google > > > > Groups "Android Beginners" group. > > > > To post to this group, send email to > > [email protected] > > > > To unsubscribe from this group, send email to > > > > [email protected]<android-beginners%[email protected]> > > <android-beginners%[email protected]<android-beginners%[email protected]> > > > > > For more options, visit this group at > > > >http://groups.google.com/group/android-beginners?hl=en > > > -- > > You received this message because you are subscribed to the Google > > Groups "Android Beginners" group. > > To post to this group, send email to [email protected] > > To unsubscribe from this group, send email to > > [email protected]<android-beginners%[email protected]> > > For more options, visit this group at > >http://groups.google.com/group/android-beginners?hl=en -- You received this message because you are subscribed to the Google Groups "Android Beginners" 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-beginners?hl=en
