Calling an AlertDialog from inside onOptionsItemSelected
by Bret Foreman » Wed, 21 Jul 2010 10:00:25 GMT
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I'm getting an exception when I try to pop up an alert dialog from
within the onOptionsItemSelected method of an Activity. The exception
looks like this:
W/WindowManager( 57): Attempted to add window with non-application
token WindowToken{43c4d3b0 token=null}. Aborting.
I pasted the same code into a button's onClick method and it worked
fine. Any ideas?
Here's the code:
AlertDialog alertDialog = new
AlertDialog.Builder(getApplicationContext()).create();
alertDialog.setTitle(R.string.confirmClear);
alertDialog.setMessage(getString(R.string.areYouSure));
alertDialog.setButton(AlertDialog.BUTTON_POSITIVE,
getString(R.string.yes), new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int
which) {
/*
* This is where we clear all the events from
the database.
*/
// do something
} });
alertDialog.setButton(AlertDialog.BUTTON_NEGATIVE,
getString(R.string.no), new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int
which) {
// don't do anything
return;
} });
alertDialog.show();
--
Calling an AlertDialog from inside onOptionsItemSelected
by Mark Murphy » Wed, 21 Jul 2010 10:05:08 GMT
Get rid of all occurrences of getApplicationContext() from your code,
including the one shown in the snippet below. Use "this" instead
(minus the quotes), as that will be a perfectly valid Context, one
much better suited for your purposes.
>
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Calling an AlertDialog from inside onOptionsItemSelected
by Bret Foreman » Wed, 21 Jul 2010 10:14:31 GMT
That worked. Mark, you rock...and after 7pm too!
--
Calling an AlertDialog from inside onOptionsItemSelected
by Mark Murphy » Wed, 21 Jul 2010 10:19:36 GMT
What? People are tracking my sleeping habits now?
:-)
I was probably a bit over the top by saying to delete all
getApplicationContext() calls, though there's so few cases where that
is the right method to use, I can't think of any of them off the top
of my head. Certainly if you're trying to do anything with the GUI,
getApplicationContext() is lobotomized -- your Activity is a far
better Context for methods that need one.
--
Mark Murphy (a Commons Guy)
http://commonsware.com | http://github.com/commonsguy
http://commonsware.com/blog | http://twitter.com/commonsguy
_The Busy Coder's Guide to Android Development_ Version 3.1 Available!
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PS: Please excuse my english is not very good.
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