Android :: How To Intent A Dialog When The Thread.run() Finish Running
Aug 11, 2010
I'm develop a download manager function which the dialog will popup when the the item was finished download. the download function was running at background.
My question is how can I know when the downloading was finished and the project is intent other activity?
For example:
CODE:............
The above method where should I put? i try put it at onResume(), onStart() in every activity which will open by user. but unlucky it won't work.
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Apr 28, 2010
What happens on Activity.finish() with an AsyncTask still running in background?
Does it just pop the Activity off the Activity Stack, but wait to destroy the Activity object until the AsyncTask fully completes (since the AsyncTask is an inner class of my Activity)?
Also, would it act any differently if the AsyncTask were a public, non-inner class that held no references to the instance of the Activity?
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Nov 4, 2010
I've created a class which is an extension of Thread. This class hits a web service and throws some data on screen. I don't care about persisting this data (the screen displays search results).
Currently, the user simply types into an EditText and clicks a search button. I'd like to take away the search button and implement something similar to Google's Instant Search where, as you type, the search results get updated.
This means, as the user types, the search parameters change. I want to be able to kill the currently running thread (if one is currently running) and spawn a new one with the new search string. How can this be achieved? Can I do it with Thread or will I need to use a new object?
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Jan 18, 2010
Can anybody tell about the Broadcast Receiver in android to make make my service to run when the the phone just finishes the booting.
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Sep 26, 2009
I've created ProgressDialog with a second thread according to the DevGuide,changes screen orientation or 2) hits the back button twice (first to hide the dialog, second to hide the app) to hide the application and run the app again after a while.Then, onCreate() is called (for the second time), and progress bar stops responding properly. My thread may work for a few minutes and I want to give the user possibility to hide it and do sth else. After a while he might want to run the app again in order to check the progress.I found a few articles concerning this topic, but I couldn't find the exact solution I should chose for this problem. So, could you tell mi what is the proper way to handle this? Should i save the handler and dialog state with "onRetainNonConfigurationInstance()"? If so, how to do it properly and is it safe?
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Sep 21, 2009
How to show a dialog in thread.run() .My code...
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Apr 15, 2010
i had made an application which download a huge list from the internet and display in a listview. The Listview class is supported by my own Class which is extension of the BaseAdapter base class. In the display list adapter getView method I use simple_list_item_multiple_choice. When I would like to insert an progress dialog with a Thread, the System is die with NullPointer Exception in the last row: *public View getView(int position, View convertView, ViewGroup parent) {if(convertView == null) convertView =inflater. inflate (android .R. layout.simpl e_list_item_multiple_choice, parent,false); try {ViewHolder vh = new ViewHolder(); vh.check TextView = (Checked TextView) convertView.findViewById(android.R.id.text1); vh. check TextView. setEnabled (true);* BUT if I don't use the Thread all going to right, there will no NullPointer Exception Can anyone tell me why ? Any solution?
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Oct 17, 2010
I have recently experimented with creating an easy way to open a ProgressDialog up in a second thread, so if the main thread freezes the dialog will keep working. Here is the class: public class ProgressDialogThread extends Thread
public Looper ThreadLooper;
public Handler mHandler;public ProgressDialog ThreadDialog;
public Context DialogContext;
public String DialogTitle;
public String DialogMessage;
public ProgressDialogThread(Context mContext, String mTitle, String mMessage)
{ DialogContext = mContext;
DialogTitle = mTitle;
DialogMessage = mMessage;
} public void run()
{ Looper.prepare();
ThreadLooper = Looper.myLooper();
ThreadDialog = new ProgressDialog(DialogContext);
ThreadDialog.setTitle(DialogTitle);
ThreadDialog.setMessage(DialogMessage);
ThreadDialog.show();
mHandler = new Handler();
Looper.loop();
} public void Update(final String mTitle, final String mMessage)
{ while(mHandler == null)
synchronized(this) {
try { wait(10); }
catch (InterruptedException e) {
Log.d("Exception(ProgressDialogThread.Update)", e.getMessage() == null ? "MISSING MESSAGE" : e.getMessage());
mHandler.post(new Runnable(){
@Override
public void run() {
ThreadDialog.setTitle(mTitle);
ThreadDialog.setMessage(mMessage);
public void Dismiss()
{ while(ThreadDialog == null || mHandler == null)
synchronized(this) {
try { wait(10); }
catch (InterruptedException e) {
Log.d("Exception(ProgressDialogThread.Dismiss)", e.getMessage() == null ? "MISSING MESSAGE" : e.getMessage());
mHandler.post(new Runnable(){
@Override
public void run() {
ThreadDialog.dismiss();
public void Continue()
{ while(ThreadLooper == null || mHandler == null)
synchronized(this) {
try { wait(10); }
catch (InterruptedException e) {
Log.d("Exception(ProgressDialogThread.Continue)", e.getMessage() == null ? "MISSING MESSAGE" : e.getMessage());
mHandler.post(new Runnable(){
@Override
public void run() {
ThreadLooper.quit();
However it sometimes work perfectly but other times the application simply freezes and crashes eventually.Here is an example of use:ProgressDialogThread thread = new ProgressDialogThread(this, "Loading", "Please wait...");
thread.start();
// Do Stuff
thread.Dismiss();
thread.Continue();It generates a lot of warning and even some crashes sometimes: eg. Handler: Sending message to dead thread.and exceptions like ANR
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Jul 27, 2010
Trouble is, that ProgressDialog show only after loading run(), but I need to show it on start and showing it while loading some data. I put: "dialog = ProgressDialog.show(CategoriesListActivity.this,"Working...","Loading data", true);" in method run(), but the same. I print in Log.i() some info (int i++) and put title of ProgressDialog. Method work correctly, but don't show ProgressDialog. I have read some info that some thread block another thread (my created), that's why doesn't show progressDialog, but can't do anything.
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Jun 22, 2009
I need to popup dialog to be showed when i get a message from differnt thread but the dialog should be not dependent on Activity i.e, it should display the dialog wherever the screen focus is .can it be done ..because the dialog is handled per Activity ,i thought of using service but again it would be one more thread added so want to avoid that.
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Apr 9, 2009
I want to expose a portion of my app with an intent that will only display a simple dialog box for system setting. The only way I currently know how to do this is to have an activity that accepts an intent. In the activity I don't use setContentView. I only create and show the dialog. The activity is finished after you press OK from the dialog.
This is kind of okay, but the activity shows as a black backdrop under the dialog, until you press OK which brings you back to the last application. I'd like to just be able to show the dialog on top of the calling Activity. Any idea on how this can be done? CAN it be done?
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Jul 31, 2010
I'm trying to learn AsyncTask and Thread but Thread first. I am trying to display a Dialog before "DoSomeTask()" but seems like the Dialog always come after DoSomeTask(). Did I do something wrong here?
--- code---
@Override public void onClick(View v) {
// TODO Auto-generated method stub mainProcessing();
DoSomeTask(); } private void mainProcessing() {
Thread thread = new Thread(null, doBackgroundThreadProcessing, "Background");
thread.start(); }
private Runnable doBackgroundThreadProcessing = new Runnable() {
public void run() { backgroundThreadProcessing();
} };
private void backgroundThreadProcessing() {
handler.post(doUpdateGUI);
} private Runnable doUpdateGUI = new Runnable() {
public void run() { updateGUI();
} };
private void updateGUI() {
final ProgressDialog dialog = new ProgressDialog(CloseVault.this);
dialog.setMessage("Please wait...");
dialog.show();
}
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Mar 6, 2009
have a Progress Dialog in an extra Thread running. Normally the user will have the keyboard open, because something is to insert! So when the Progress Dialog appears and the user close the keyboard, the dialog dissappears and the application crashes. In the debugger i saw the exception "View not attached to window manager". May because the Dialog is not longer shown but the application want to remove it after the calculation? Here is the code where i start the dialog and the thread:Does somebody know how to solve this?
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May 9, 2010
Does anyone have expirience with opengl-ui-opengl threading interraction? I'am developing a small opengl application. I'am a little bit confused with separate opengl thread. Currently, my application is logically separated in two parts - the controlling one and the rendering one. The controlling part interracts with user - accepting user input, changing activities, dealing with files and so on. The rendering part - just render everything it should. Ok, so when I need to load new texture to opengl (unfortunatelly its large and I cant reduce its size), I'd like to show a ProgerssDialog dialog. Trying to show it from the open gl thread brings me an exception: "Can't create handler inside thread that has not called Looper.prepare()". Because the initiator of loading is in the ui thread (for example - user selected a menu option), I'am opening the dialog, adding the load Runnable to stack on Runnables that will be called in Render.onDrawFrame and passing there a callback that will be executed after texture is loaded.
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Sep 16, 2010
My IntentService is blocking my UI thread and I wanted to find out why. So I turned on profiling in the onStartCommand method of the IntentService and turned it off at the end of the onStartMethod. The working being done in between is web access with the Apache HTTP client.According to the profiler, the onStartCommand method of the IntentService is running on the main thread, not in a worker thread. Any idea what could cause this behavior?
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Aug 18, 2010
Look at my code.
- code -
private Handler handler = new Handler(); private ProgressDialog dialog;
final Runnable runInUIThread = new Runnable() { public void run() { dialog.dismiss();
} };
private void DoThis() {
dialog = new ProgressDialog(Main.this); dialog.setTitle("Title");
dialog.setMessage("Text"); dialog.show();
Thread newTask = new Thread() {
@Override public void run() { Looper.prepare(); DoThat();
handler.post(runInUIThread); Looper.loop();
); newTask.start(); } }
Is it possible to use test.setText("something") in this thread to update a Button text or TextView in the LinearLayout after the dialog is dismissed? I try cheating placing:
test.setVisibility(View.INVISIBLE);
test.setText("something");
test.setVisibility(View.VISIBLE);
after dialog.show();
It kind of updated the text when the dialog open. I want to do it after the dialog was dismissed. What is the correct way to implement this in my thread?
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May 29, 2010
In the code showed as below I create a process dialog for doing some long
operation (in this case waiting 4 seconds). It runs as it should. And shows the "Starting" and "Done" message but when it finishes and I click Button1 again it terminates.
public class main extends Activity { public ProgressDialog dialog = null;
final Handler handler = new Handler(){ public void handleMessage(Message msg){
dialog.dismiss(); TextView tv2 = (TextView) findViewById(R.id.TextView02);
tv2.setText("Done"); } };
Thread runlongjob = new Thread(){ public void run(){
SystemClock.sleep(4000); handler.sendEmptyMessage(0);
} };
/** Called when the activity is first created. */
@Override public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); setContentView(R.layout.main);
} public void clickhandler(View v){ switch(v.getId()){
case (R.id.Button01): TextView tv1 = (TextView) findViewById(R.id.TextView01);
tv1.setText("Starting...");
dialog = ProgressDialog.show(main.this, "Please wait", "Doing Job...",
true); runlongjob.start(); break; } }
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Jun 5, 2010
On my activity, im getting some big data from web, and while getting this data i want to show the user a ProgressDialog with spinning wheel. That i can do only with putting this code into a thread, right? the problem is that after im getting this data i need to insert it into my tableLayout as TableRows and it seems impossible to access the TableLayout from the thread. What can i do to show this progress dialog and to be able access the table layout from the thread ? is there any event that happens on the end of the thread ?
My code fails for : _tableLayout.addView(_tableRowVar, new TableLayout.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));My full code is : final ProgressDialog dialog = ProgressDialog.show(MyActivity.this, "","Getting data.
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May 22, 2010
How would I force the current thread to wait until another has finished before continuing. In my program the user selects a MODE from an AlertDialog, I want to halt executing of the program before continuing as the mode holds important configuration for the gameplay.
new AlertDialog.Builder(this)
.setItems(R.array.game_modes, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case 0:
setMode(TRAINING_MODE);
case 1:
setMode(QUIZ_MODE);
default:
setMode(TRAINING_MODE);
break; ............
//continue loading the rest of onCreate();
contineOnCreate(); } })
.create().show();
If this is impossible can anyone give a possible solution?
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Apr 24, 2010
I've got an Android activity which grabs an RSS feed from a URL, and uses the SAX parser to stick each item from the XML into an array. This all works fine but, as expected, takes a bit of time, so I want to use AsyncActivity to do it in the background. The line items = parser.getItems() works fine - items being the arraylist containing each item from the XML. The problem I'm facing is that on starting the activity, the ProgressDialog which i create in onPreExecute() isn't displayed until after the doInBackground() method has finished. i.e. I get a black screen, a long pause, then a completely populated list with the items in. Why is this happening? Why isn't the UI drawing, the ProgressDialog showing, the parser getting the items and incrementally adding them to the list, then the ProgressDialog dismissing?
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Aug 14, 2010
With this sample code, the activity is told to finish, but continues execution afterwards and displays the message. I'm trying to understand why this happens. The only fix I can think of is to place 'return' after finish.
public void someMethod() {
if( valueIsTrue) {
startActivity(new Intent(this, NewActivity.class));
CurrentActitivy.this.finish();
// return; // if uncommented, Toast doesn't show
}
Toast.maketext(this, "Some message", Toast.LENGTH_SHORT).show();}
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Jul 10, 2009
My program does some network activity in a background thread. Before starting, it pops up a progress dialog. The dialog is dismissed on the handler.This all works fine, except when screen orientation changes while the dialog is up (and the background thread is going). At this point the app either crashes, or deadlocks, or gets into a weird stage where the app does not work at all until all the threads have been killed.How can I handle the screen orientation change gracefully?
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Feb 22, 2009
I am using this method to identify if a thread is running at any point of time, irrespective of whether the enclosing activity is running or not. Is this the right way?
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Jul 20, 2010
I am continuously running a thread in my activity which fetches lat/ lon information and the overlays on the map are updated dynamically through a handler. The overlays can be varying in number and can change dynamically. The thread is interrupted in onPause().
I am over riding the onTap() method in my Itemizedoverlay, where I want to call a dialog or may be start anothrer activity which describes that particular overlay item.
Every time I click on the moving overlay my app force closes.
I am basically using same onTap() method in http://developer.android.com/resources/tutorials/views/hello-mapview.... .
If it is only a Toast message and not starting a dialog/activity then it works fine.
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Jun 17, 2010
I want to stop currently running thread but -Thread.stop() - Thread.destroy() are DEPRECATED so can any one tell me how to stop the Thread .
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Feb 19, 2010
Can someone advise the am command (for adb shell) to run junit tests in the main thread please? The following shows onStart etc running in the test runner thread. am instrument -w -e class co.uk.telesense. tests.MyTest co.uk.telesense.tests/android.test.InstrumentationTestRunner Ewan Benfield ttp://www.telesense.co .uk tel: 0845 643 5691 (+44 845 643 5691) mob: +44 (0) 77859 26477
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Jul 13, 2010
I have a situation where i want to show a dialog. However, the code that calls the method to show the dialog can be running either in the ui thread or not. How can i find if the current thread is running in the ui thread or not?
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Nov 7, 2010
I have an application that starts on boot using a broadcast receiver, also I have an activity and a process, because the service must run always on the background I am starting the service on it's own process using the android:process manifest tag.The ui is only for presentational needs and I would like the user to be able to run the service even if the activity is not active.when I press the back button or the home button the activity's on destroy method is called and the service although seems its running (it appears on the task manager) its not behaving as supposed, it should connect to the net and send some data but every X time using an timer task but the task never fires so the data are never send.
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Feb 17, 2010
is there any way to leave a thread in background when i close the app in android? I read about a Service but implementing it is too much than i need.
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Sep 14, 2010
Suppose I have code in the onStart() handler of my Service to launch a thread to do some stuff and then call stopSelf().stopSelf() gets called before the thread finishes.What exactly happens?I've tested this out myself and my thread continues to execute until it is finished.Does Android hear the stopSelf() call, but postpone it until the thread is finished?
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