Do you wan to display a Toast from a Service? You do not need any Activy to do so. A toast can be created and displayed from an Activity or Service. If you create a toast notification from a Service, it appears in front of the Activity currently in focus.
A Service is indirectly derived from Context. You have getApplicationContext() method in a service and you can use the returned Context in your Toast. Have a look at this page: http://developer.android.com/guide/topics/ui/notifiers/toasts.html Regards Sarwar Erfan On Aug 11, 3:50 pm, CaryWang <wangjf...@gmail.com> wrote: > I run service in the background I want to use Toast.makeText display message > to run Activity.but I don't know Activity context I know Activity > packageName and className.What should I do? > > -- > Cary -- 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