android-asynctask

问题 I have an AsyncFacebookRunner that uploads an image to Facebook. I want to create a cancel button that will stop the download. How can one achieve that? EDIT: This is how I use it: byte[] data = null; ByteArrayOutputStream baos = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos); data = baos.toByteArray(); Bundle params = new Bundle(); params.putByteArray("picture", data); AsyncFacebookRunner mAsyncRunner = new AsyncFacebookRunner(facebook); mAsyncRunner

问题 I'm using an AsyncTask subclass for some background processing. The problem is that when I use the class with the .get() method, the ProgressDialog I specify in the onPreExecute() does not show. I works fine if I use a callback withing the onPostExecute() method. My first thought was that this was because the .get() waits for the process to complete but that can't be blocking the UI thread either so that's not the case. Can anyone explain why this behavior is so and if there is a workaround

问题 I already use AsyncTask, but I don't understand why I still got error when i tested on my device (OS 4.0) . my apk build in 2.3.3 . I think i made the codes wrong, but i don't know where is my mistake. Anyone please help me, thank you very much login.java package com.karismaelearning; public class Login extends Activity { public Koneksi linkurl; String SERVER_URL; private Button login, register, setting; private EditText username, password; public ProgressDialog progressDialog; @Override

问题 I already use AsyncTask, but I don't understand why I still got error when i tested on my device (OS 4.0) . my apk build in 2.3.3 . I think i made the codes wrong, but i don't know where is my mistake. Anyone please help me, thank you very much login.java package com.karismaelearning; public class Login extends Activity { public Koneksi linkurl; String SERVER_URL; private Button login, register, setting; private EditText username, password; public ProgressDialog progressDialog; @Override

问题 i trying to connect with themoviedb.orgbut there's some issues MainActivityFragment.java public class MainActivityFragment extends Fragment { public Item[] dataAdapter ; public MainActivityFragment() { this.updateData(); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Add this line in order for this fragment to handle menu events. setHasOptionsMenu(true); } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {

问题 Here is my sample code. public class test extends Activity { private TextView tv; public class Blap extends AsyncTask<String,String,Boolean>{ private test parent; @Override protected Boolean doInBackground(String... options) { this.auth(options[0],options[1]); parent.aresponse(res); return true; } public Blap(test a){ this.parent = a; } public auth(String login, String password){ //process auth } } @Override public void onCreate(Bundle savedInstanceState) { //work... } public void buttonclick

问题 I am practicing the working of the AsyncTask and with that purpose I wanted to use the onProgressUpdate function. Currently in my program I have UI that lets the user choose an input (which would be show in a TextView after the AsyncTask is finished) and a timer (determines Thread.sleep() time in the AsyncTask ) What I want to do is ... if the user selects a time of 5. Then in every passing second I would like to send a notification to the UI (where a progress dialog is called) ... indicating

问题 I have an Android application with an AsyncTask which is responsible for downloading a file from the internet. This AsyncTask is executed when clicking on an item in a Listview. So I have a custom adapter and in the OnItemClickListener of the Listview, I start the download and execute the AsyncTask. Now, my adapter contains the following code to start the AsyncTask named FileDownloader: @Override public void onClick(View view) { try { FileDownloader fd = new FileDownloader(activity); // some

问题 After searching for a long , i went through the following links and understood , http://developer.android.com/reference/android/os/AsyncTask.html#cancel(boolean) AsyncTask never executes onPostExecute But i want to do some API hits to the server and after getting all the data , i want to move to my mainactivity from the Splashscreen , below is my code . . . . class Startsyntask extends AsyncTask<Void, Void, Void> { @Override protected Void doInBackground(Void... arg0) { raw_data = new File

问题 I have implemented an AlarmManager which calls a Service. The problem is that although I'm launching it in AsyncTask, it's blocking the main thread. This is the source of my AsyncTask: private class NotificationsServiceTask extends AsyncTask<Void, Void, Void> { private AlarmManager alarmMgr; private PendingIntent pi; @Override protected Void doInBackground(Void... params) { alarmMgr = (AlarmManager) LoginActivity.this.getSystemService(Context.ALARM_SERVICE); Intent serviceIntent = new Intent