[android-developers] Re: about Async Task
thank you guys for help :-) On Aug 18, 10:36 am, Andrew Pittman wrote: > Yes, usually AsyncTask is only able to be run once. Restarting the same task > may give you a little trouble though due to this. If you have something that > needs to run over and over again I would suggest that you look into starting > a service and loop the task you need to keep running in its own thread and > just make it sleep for the needed amount of time. As long as you have the > activity running in its own thread in a service you can loop it and make it > repeat infinitely as long as you allow the service to run. > > On Thu, Aug 18, 2011 at 8:30 AM, Streets Of Boston > wrote: > > > You mean you do NOT want to execute the same task twice (e.g. when the user > > clicks a button two or more times in quick succession)? > > > If so, then disable the button until the AsyncTask has finished. > > You know when it's finished by implementing/overriding the onPostExecute > > method and from there you can enable that button again. > > > -- > > 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 -- 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
Re: [android-developers] Re: about Async Task
Yes, usually AsyncTask is only able to be run once. Restarting the same task may give you a little trouble though due to this. If you have something that needs to run over and over again I would suggest that you look into starting a service and loop the task you need to keep running in its own thread and just make it sleep for the needed amount of time. As long as you have the activity running in its own thread in a service you can loop it and make it repeat infinitely as long as you allow the service to run. On Thu, Aug 18, 2011 at 8:30 AM, Streets Of Boston wrote: > You mean you do NOT want to execute the same task twice (e.g. when the user > clicks a button two or more times in quick succession)? > > If so, then disable the button until the AsyncTask has finished. > You know when it's finished by implementing/overriding the onPostExecute > method and from there you can enable that button again. > > -- > 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 -- 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
[android-developers] Re: about Async Task
You mean you do NOT want to execute the same task twice (e.g. when the user clicks a button two or more times in quick succession)? If so, then disable the button until the AsyncTask has finished. You know when it's finished by implementing/overriding the onPostExecute method and from there you can enable that button again. -- 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
[android-developers] Re: about Async Task
ok guys, i get it .. i suposse so :-( so ... considering that the application executes the task instance after the ocurrence of an user event (clickable button ...), how it is supossed to be controlled a double ocurrence of the same user requirement ... i mean, the user makes double click and the application tries to execute twice the same requirement (because input data is the same). is it something to be controlled just by logical ? does it have a relationship whit isAlive() method ?? thanks for help! On Aug 17, 4:36 pm, Mark Murphy wrote: > On Wed, Aug 17, 2011 at 5:26 PM, hectordu...@yahoo.com > > wrote: > > yes, that's what i do, > > This claim runs counter to: > > > but it is not clear for me, what means "task can be executed only > > once", if we suposse to do it exactly the opossite way .. > > No, you are not supposed to "do it exactly the opossite [sic] way". > You are supposed to do it the way Streets of Boston indicated. > > In other words, you can do this: > > MyAsyncTask task=new MyAsyncTask(); > > task.execute(); > > // later > > task=new MyAsyncTask(); > task.execute(); > > but you cannot do: > > MyAsyncTask task=new MyAsyncTask(); > > task.execute(); > > // later > > // skipping task=new MyAsyncTask(); by trying to reuse the existing instance > task.execute(); > > You better follow what Streets of Boston tells you to do. He is a > rather large person. :-) > > -- > Mark Murphy (a Commons > Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy > > _Android Programming Tutorials_ Version 3.9 Available! -- 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
Re: [android-developers] Re: about Async Task
On Wed, Aug 17, 2011 at 5:26 PM, hectordu...@yahoo.com wrote: > yes, that's what i do, This claim runs counter to: > but it is not clear for me, what means "task can be executed only > once", if we suposse to do it exactly the opossite way .. No, you are not supposed to "do it exactly the opossite [sic] way". You are supposed to do it the way Streets of Boston indicated. In other words, you can do this: MyAsyncTask task=new MyAsyncTask(); task.execute(); // later task=new MyAsyncTask(); task.execute(); but you cannot do: MyAsyncTask task=new MyAsyncTask(); task.execute(); // later // skipping task=new MyAsyncTask(); by trying to reuse the existing instance task.execute(); You better follow what Streets of Boston tells you to do. He is a rather large person. :-) -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy _Android Programming Tutorials_ Version 3.9 Available! -- 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
[android-developers] Re: about Async Task
That means you can only call 'execute()' on an AsyncTask instance once. E.g. *MyAsyncTask myTask = new MyAsycnTask();* *myTask.execute(); // ok* *myTask.execute(); // wrong. Cannot be executed more than once.* However: *MyAsyncTask myTask = new MyAsycnTask();* *myTask.execute(); // ok* *myTask = new MyAsycnTask(); // create another new instance of MyAsyncTask * *myTask.execute(); // ok* -- 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
[android-developers] Re: about Async Task
yes, that's what i do, but it is not clear for me, what means "task can be executed only once", if we suposse to do it exactly the opossite way .. On Aug 17, 3:34 pm, Streets Of Boston wrote: > Then create a subclass of AsyncTask that does the same thing in the > background. > Then each time create a new instance of that subclass and call 'execute()' > on it. -- 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
[android-developers] Re: about Async Task
Then create a subclass of AsyncTask that does the same thing in the background. Then each time create a new instance of that subclass and call 'execute()' on it. -- 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
