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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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?
View 3 Replies View RelatedMy 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?
View 9 Replies View RelatedI am new to Android. How do I popup modal dialog? By modal I mean I call something like showModalDialog function and it will not return until the dialog is closed and I can get what button was used to close the dialog.
View 12 Replies View RelatedI'm displaying a webpage in a WebView and on the webpage, there is a button. When you click the button, a confirmation dialog is supposed to popup, but it doesn't show in my WebView. It does popup if I go to the same webpage in the android browser. Anyone know how to handle popup dialogs coming from a webpage inside your WebView?
View 1 Replies View RelatedI have an Android Spinner and I'd like to get a callback when the user selects something from its popup dialog. It seems like
setOnItemClickListener() or setOnItemSelectedListener()
would be the right method to use, but neither get invoked when I select one of the items in the spinner. Is there a correct way to do this? Per commonsware's suggestion, I did the following, but my onItemSelected() method is never being called:
final Spinner spinner = (Spinner) findViewById(R.id.spinner);
spinner.setAdapter( new ArrayAdapter<SettingValue>(getContext(), android.R.layout.simple_list_item_1, android.R.id.text1, setting.getSettingValues() ) );
spinner.setOnItemSelectedListener( new OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) { Log.d("BOOGA");
final SettingValue settingValue = (SettingValue)parent.getSelectedItem();
final Editor edit = getContext().getSharedPreferences( PREFS_CONTEXT_NAME, Context.MODE_PRIVATE).edit();
edit.putString(setting.name(), settingValue.name());
edit.commit();
} public void onNothingSelected(AdapterView<?> parent) { // do nothing
} } );
I am trying to show a activity or a dialog when the phone is locked.
I have tried using a WakeLock but it did not work and I can only see the activity once my phone is unlocked?
What is the proper way to do this?
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?
View 11 Replies View RelatedHow to show a dialog in thread.run() .My code...
View 4 Replies View Relatedi 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?
View 2 Replies View RelatedI 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
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.
View 2 Replies View RelatedI'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();
}
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?
View 6 Replies View RelatedDoes 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.
View 2 Replies View RelatedI'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.
Whenever a application needs internet and connection fails, I get a message dialog
Connection failed
This application requires network access. Enable mobile network or Wi-Fi to download data.
and two buttons, Settings, Cancel.
How do I detect there is no internet connection?
How do I popup a same dialog in my application?
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?
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; } }
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.
How to achieve a black background popup window and white text color?
This is on Gingerbread 2.3.4 rom.
Images attached.
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?
I need to run a background thread in my application. Could you please share the best practices where to initiate the thread so that keeps running irrespective of the Activity is being shown and things to consider. The purpose of this background thread is to fire transactions from the Simulator to the server and get the response back from the host.
View 2 Replies View RelatedDoes the CursorAdapter run on a background thread and posts updates via the UI looper thread? If not what is the best pattern to load data asynchronously from a ContentProvider?
View 1 Replies View RelatedAs is mentioned above,What i'm trying is to protect a sub- thread,and keep it going on as long as the App that starts it is still alive.In other words,If the system need more resources,Let it kill both the App main thread and the sub-thread started from it,Instead of just kill the sub-thread.Is there any way i can do this ?? And another question here,The android system seems to be "rude",As it killed my thread without telling me,even in the logs,Is this the case?
View 6 Replies View Relatedis 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.
View 2 Replies View RelatedIn my activity there's some stuff going on in a background thread, which gets started in Activity_1. The processing of the background thread takes a while and I want to notify the user when it's completed via an AlertDialog. However, the user might have changed to Activity_2 or Activity_3 in the meantime and I would like to pop up the AlertDialog always in the current Activity.
View 2 Replies View Relatedhow create thread in background for playing sound?
View 2 Replies View RelatedHow can I stop a background thread on keyboard flip in android?
View 1 Replies View RelatedI've read up quite a bit on the exception thrown while using BaseAdapter, but i can't seem to find an alternative solution: Make sure the content of your adapter is not modified from a background thread. What i want to achieve is to keep a copy of a message queue in memory, and use this message queue to populate the BaseAdapter for my ListView. The reason im doing this is that the message queue will keep getting messages from a socket even when the ListView is not currently present (for example a chat window).
The problem comes when i have the Activity with the ListView in foreground, BaseAdapter binded to the message queue's data, and a message comes in the socket. Adding the new message into the queue will throw the exception mentioned above. Unless i pre-populate my BaseAdapter with the message queue (as in the BaseAdapter having its own message queue) and updating both of them when a new message come in, i can't really find a way around this issue. I don't really want to double up the effort on keeping those 2 queues up-to-date like this, surely there is a better way of doing this? Send broadcasts around doesn't work either because of the potential delay in the adapter serving a scroll and the notifyDataSetChanged call is made.