android - MultiDownloading with AsyncTask -

i want download files @ same time(simultaneously) asynctask.

i figure out how download multiple files simultaneously. tried search on internet found nothing, found in lot of applications can done.

i want improve stability of app (android) every time perform or refresh ui not slow down process ---> "lag".

excuse english not speak well.thank much.

create download task this:

public class newspaperdownloader extends asynctask<void, void, file> {      url urltodownload;      public downloadertask(url urltodownload) {         this.urltodownload = urltodownload;     }      protected void onpreexecute() {         // prepare download here     }      protected string doinbackground(void... params) {         // download here         [...]     }      protected void onpostexecute(file downloadedfile) {         // download     } } 

if don't know how download files in asynctask on android, have @ examples provided here.

and call downloads this:

// task 1 downloadtask task1 = new downloadtask(urltodownload); task1.executeonexecutor(asynctask.thread_pool_executor); // task 2 downloadtask task2 = new downloadtask(urltodownload); task2.executeonexecutor(asynctask.thread_pool_executor); // task 3 downloadtask task3 = new downloadtask(urltodownload); task3.executeonexecutor(asynctask.thread_pool_executor); 

update

download url list:

list<url> urls = new arraylist<url>(); urls.add(...); [...] for(url url : urls) {     downloadtask task = new downloadtask(url);     task.executeonexecutor(asynctask.thread_pool_executor); }