It is not safe, and definitely not guaranteed to even work. On Tue, Jun 26, 2012 at 3:04 PM, Tamás Kovács <[email protected]> wrote: > OK I made additional research and source code exploring: > > only *ViewGroup* and its descendants check the Thread, the *View* > class does not. It does not even STORE the thread which created it. > > Based on this, it should be safe to create Views (but never > Viewgroups) in different threads. It would be nice if Dianne or Romain > could confirm this. > > On Jun 26, 10:53 pm, Justin Anderson <[email protected]> wrote: >> I'm not sure, but I doubt it... Have you tried it? Did it work? >> >> Thanks, >> Justin Anderson >> MagouyaWare Developerhttp://sites.google.com/site/magouyaware >> >> On Tue, Jun 26, 2012 at 2:27 PM, Tamás Kovács >> <[email protected]>wrote: >> >> >> >> >> >> >> >> > I know that the UI elements (View hierarchy) may only be manipulated >> > from the UI thread. For a background operation, the AsyncTask can be >> > used, which offers event handers to reach the UI thread. >> >> > To be brief, is it allowed to instantiate a View (tied to >> > getApplicationContext()) in a non-UI thread? This custom View >> > descendant -- once instantiated -- is added to the view hierarchy from >> > the UI thread. So only the constructor call is done inside an >> > Asynctask.doInBackground; its attaching (addView(...))to the >> > Activity's root layout hierarchy is still done in the UI thread. >> >> > (I pre-instantiate the View in an asynctask because when it's needed >> > in an Activity, it must be instantly displayed.) >> >> > -- >> > 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 > > -- > 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
-- Romain Guy Android framework engineer [email protected] -- 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
