android-asynctask

问题 Hey I have a listview which I load from a resource using asynctask and show progress bar before loading list. Currently, the progress bar doesn't show up at the start and it breaks the list as well. Any help would be appreciated, by breaking the list I mean it loads elements on top of each other like this instead of 10 elements at once which was working fine before including async task. Code for activity: public class MovieRatingsActivity extends ListActivity { private ArrayList<Movie> movies

问题 Hey I have a listview which I load from a resource using asynctask and show progress bar before loading list. Currently, the progress bar doesn't show up at the start and it breaks the list as well. Any help would be appreciated, by breaking the list I mean it loads elements on top of each other like this instead of 10 elements at once which was working fine before including async task. Code for activity: public class MovieRatingsActivity extends ListActivity { private ArrayList<Movie> movies

问题 My Question is i need to open SAME FRAGMENT from Navigation Drawer's every List Item 's , and when fragment display, If AsynTask execution is On Going then AsyncTask execution should be cancel. How can i do it? I tried so many ways to accomplish this but i failed everytime. I used asynctaskObject.cancel(true); So Can anybody please answer. i hope i'll get the result. Thanks in advance. :) 回答1: i found solution of my problem. We just need to make request in onStop method like below : @Override

问题 In my interface, the user selects from a variable number of songs, and when a song is selected, I need to display the relevant background image. The user needs to keep control of the interface while the images are loading, and still be able to change song. The way I currently do this is using an AsyncTask. I am executing it using: if (LoadBG!=null&&!LoadBG.isCancelled()) LoadBG.cancel(false); LoadBG = new loadBG(); LoadBG.execute((Object) diff.BGPath); attempting to cancel the previous task

问题 I'm having an issue where I'm attempting to use JSOUP to obtain data from an webpage (in this case - google.com) and when debugging the title data is returned and shown in the logcat - however my textview never seems to update with the freshly obtained data. SOURCE: package com.example.test; import java.io.BufferedReader; import java.io.InputStream; import java.io.InputStreamReader; import java.io.IOException; import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.nodes

问题 I have a java class buried deep in an SDK that performs an action and returns a boolean. It has no knowledge of the application's main activity , but I need the main activity to receive that boolean value. I've seen a lot of questions regarding callbacks, broadcasts, and listeners but they all seem to have knowledge of the activity. My pojo does have an activityContext but I don't know how to get the value back to the application's main activity. I'm already using an AsyncTask in my pojo and

问题 I'm new to android application development. I tried to develop an android server client chat for my first project. This is the code for the client side. When the client press btnJoin , it will connect to the server and send a string. I've read many example and many of them looks like this. I got a networkOnMainThreadException . How do I make an asyncTask to prevent this problem? Any help would be much appreciated. btnJoin = (Button) findViewById(R.id.buttonJoin); btnJoin.setOnClickListener

问题 I'm new to android application development. I tried to develop an android server client chat for my first project. This is the code for the client side. When the client press btnJoin , it will connect to the server and send a string. I've read many example and many of them looks like this. I got a networkOnMainThreadException . How do I make an asyncTask to prevent this problem? Any help would be much appreciated. btnJoin = (Button) findViewById(R.id.buttonJoin); btnJoin.setOnClickListener

问题 I have several AsyncTask s doing network operations. I was recently asked to add, after each of these operations, another network call that invokes a remote service sending some statistics. I'd like this statistics call not to delay 'main' network calls, and so I was thinking of executing them in a thread created and started inside the AsyncTask 's doInBackground() . This thread would most probably end after the doInBackground() and possibly the whole AsyncTask has ended. I tried this and it

问题 I have this script. I have gone through many variations of the problem on stack overflow and used the solution to try and build the knowledge to do this but it seems to be failing everytime, can someone help? public class Main extends Activity implements OnClickListener { private EditText value; private Button btn; private ProgressBar pb; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); value = (EditText)