When you use new Thread you’re really creating a new thread every time you execute that. AsyncTask however, uses a static pool of max 128 threads and will reuse an old thread whenever it exists. So, running AsyncTask 10 times in serial will only create one thread that runs the task 10 times instead of … Read more
I just ran into the same issue and had it at a re-producable state. This is the error I was getting: 08-04 17:37:05.491: A/libc(4233): @@@ ABORTING: INVALID HEAP ADDRESS IN dlfree 08-04 17:37:05.491: A/libc(4233): Fatal signal 11 (SIGSEGV) at 0xdeadbaad (code=1) What it boiled down to is a function call being made from two different … Read more
It will be much more helpful for you to spend a little bit of time understanding the architecture of an AsyncTask than for someone to simply make one for you. An AsyncTask is actually a fairly simple class to extend and use. An AsyncTask can, in its simplest form, be code that runs in the … Read more
Don’t use AsyncTask, as you are not in charge of loading the webview. If you want to show a progress dialog, here is how to do it. private ProgressDialog dialog = new ProgressDialog(WebActivity.this); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.webview); webView = (WebView) findViewById(R.id.webView1); Bundle extras = getIntent().getExtras(); String url=extras.getString(“adres”); webView.setWebViewClient(new WebViewClient() { @Override … Read more
For your comment I think that async is provided by Volley automatically. So i need to know how to get JSON data into the first snippet IMO, instead of your first snippet, you can try the following way (of course, you can replace JSONArray request by JSONObject request): VolleyResponseListener listener = new VolleyResponseListener() { @Override … Read more
I also had some same situation the other day. I had solved it in this way: Pass the reference of your activity to the constructor of async class and execute the do in background function. Now in post execute function call a public method of ur activity from async class to execute the task again… … Read more
You’re not the only one observing this behaviour. The slowdown by factor 10 is probably a result of Android using a Linux cgroup (scheduling class) for threads of priority BACKGROUND or below. All these threads have to live with 10% CPU time altogether. The good news is you don’t have to live with the Thread … Read more
In my opinion this is the most tricky/hard part of a mainstream/average Android development. For instance on BlackBerry this is IN TIMES easier. Definitely you need to use a Service. AsyncTask does not suit, because it is tightly “bound” to your Activity via a Context handle (otherwise you would not be able to update UI … Read more
Just set the imageview to null in within getView and it should remove what you are experiencing for the most part you’ll be right. The other tiny tiny corner case aspect is that when your asynctask arrives at postExecute, the view might still exist, but it might have already been assigned a different contact to … Read more
When you are using get, using Async Task doesn’t make any sense. Because get() will block the UI Thread, Thats why are facing 3 to 5 secs of blank screen as you have mentioned above. Don’t use get() instead use AsyncTask with Call Back check this AsyncTask with callback interface