Note that 'post' and 'runOnUiThread' takes a Runnable and it should *not* be a Thread (although that implements Runnable as well)! (Mis) using a Thread for this is not good. Just use a Runnable.
Create a new instance of a Runnable and implement its 'public void run ()' method (see my example code in my previous post). On Jan 21, 4:50 pm, TreKing <treking...@gmail.com> wrote: > On Thu, Jan 21, 2010 at 3:30 PM, Dirk Vranckaert > <dirkvrancka...@gmail.com>wrote: > > > It seems your solution does not work either. > > Um ... it should, I've used this technique repeatedly. Can you post the code > you're using? > > > As long as I'm doing it in a thread it doesn't work. > > Well, it depends on how you're running the thread. If you're posting it to > the runOnUiThread() function, it should work. If you're starting it with > Thread.start(), then yeah, that won't work. Again, some code would clarify. > > > Altough what I tried next was setting the error message for the user > > in my catch clause. And right after the thread finished I handled the > > showing of the errors based on wheater some error message was set or > > not! > > I'm not sure I follow here. > > > Thx for your help! (If you get me some advanced explanation on why > > dialogs cannot be created from within a thread plz let me know!) > > Probably because of the complexities of ensuring thread safety. If you could > update the UI from any thread, you could run into various threading issues > (deadlocks, race conditions, etc). If they core framework were designed to > support this it would introduce more complexity and overhead to the system. > Just a guess, but again, this is pretty standard behavior in GUI systems, so > it's really something that's just accepted. > > ------------------------------------------------------------------------------------------------- > TreKing - Chicago transit tracking app for Android-powered > deviceshttp://sites.google.com/site/rezmobileapps/treking -- 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
