Android :: IllegalStateException When Adapter.notifyDataSetChanged() Is Called

May 27, 2010

I have a very simple application. There is a refresh button, everytime it is being clicked, the adapter will call notifyDataSetChanged() to update a ListView. However, I got IllegalStateException all the time.

Android :: IllegalStateException when adapter.notifyDataSetChanged() is called


Android :: How To Call NotifyDataSetChanged() From A Generic Adapter

May 19, 2010

An OnItemClickListener for a ListView has the following method:

CODE:.......

I'd like to have the adapter behind the ListView refresh, and I believe this is done through the use of:

CODE:.........

How do I use the parent parameter in the onItemClick method to do this? So far I've tried:

CODE:.................

This throws an error because the object returned is of class HeaderViewListAdapter, which for reasons unknown isn't a subclass of BaseAdapter.

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Android :: Calling ListView.setSelection Has No Effect When Called Directly After Adapter Data Was Invalidated

May 4, 2009

I have a ListView whose position should be changed automatically along with the data. So, when the adapter's data has changed (adapter is calling notifyDataSetInvalidated), I'm calling setSelection. This has no effect. If the call to setSelection is done later (e.g. in a click handler) it is working.

The second problem is, that the ListView maintains the scroll position of the list although the data is completely invalidated, that makes no sense IMO.

It looks like a call to layoutChildren before the call to setSelection does help in this case, but layoutChildren is protected.

What is the correct way to do this?

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Android :: IllegalStateException - When Is It Thrown?

Jul 28, 2010

In my application, sometimes the following exception is thrown:

CODE:..........

It's difficult to find the error, because in the stacktrace none of my methods is listed. So, does anyone know when this exception is thrown?

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Android :: IllegalStateException - Not Connected To MediaScannerService?

Dec 14, 2009

After http://groups.google.com/group/android-developers/browse_frm/thread/1... I am using

CODE:...............

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Android :: IllegalStateException With ExpandableListActivity And SimpleCursorTreeAdapter

Aug 25, 2010

Using com.example.android.notepad and ExpandableList2.java from com.example.android.apis.view, I have written a simple application that contains a content provider serving two tables in an sqlite database and a display activity that uses my ExpandableListActivity subclass. I am using my own layouts for the ExpandableList, and the group and child layouts. The contents of the database are being displayed properly in the display activity, and the groups collapse and expand fine. However, if I expand a group, and click on a child to select it, I get the following stack dump:

CODE:.......

My SimpleCursorTreeAdapter:

CODE:......................

I've yet to be able to set a breakpoint in my code that is reached before the IllegalStateException gets thrown. Looks to me that I'm doing what the examples do, but apparently there is something I'm missing.

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Android :: IllegalStateException Error When Trying To Update Listview?

May 3, 2010

I am trying to get this code to run, but I get an IllegalStateException when I run this code saying that the content of the listview wasn't notified, yet I have a notification upon updating the data. This is a custom listview adapter.

Here is the relevant part of my code:

CODE:...........................

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Android :: Java.lang.IllegalStateException - Content Has Been Consumed

Jul 23, 2010

I'm making a http get request like this:

CODE:.........................

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Android :: NotifyDataSetChanged Example

Sep 8, 2010

I'm trying to use in my Android Application the notifyDataSetChanged method for an ArrayAdapter but it doesnt't work for me.

I found as answer here, that notifyDataSetChanged should run in the main thread, but there was no example for that.

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Android :: Expandablelistview Can Not Use NotifyDataSetChanged()?

Oct 20, 2010

I want to refresh my expandablelistview, but it seems there is no way to use notifyDataSetChanged()? how can i refresh my expandablelistview?

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Android :: Bug With NotifyDataSetChanged() In ArrayAdapter ?

Jun 16, 2010

I have a strange problem with one of my ListActivity. I have overrided the default ArrayAdapter in order to customize my list. I have then filled the adapter with an ArrayList.

If I insert an element on the list and then call notifyDataSetChanged() on the adapter everything works fine.

But if I insert an element at the END of the list and then call notifyDataSetChanged(), the new element doesn't appear ...

And finally if I override getCount() on my adapter like this :

CODE:...............

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Android :: NotifyDataSetChanged Doesn't Work?

Sep 8, 2010

I write following application:

There is an AutoCompleteTextView field as Adapter I'm using ArrayAdapter with ListArray the ListArray consists of some constant string item and one item, which will be changed dynamically everytime user typed something in the field

I took TextChangedListener to update this last list item. But it seems, that update occurs only once.

I add a bit code of me. May be somebody can show me, what did i do wrong.

CODE:.................

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Android :: NotifyDataSetChanged Not Working As Expected

Jan 25, 2010

The problem is that notifyDataSetChanged() is not firing up getView() of listView class.

I have an activity class in which i have Gallery Adapter and custom List Adapter (extending base class and overriding getView). What i want is, if i select any picture from gallery then, the list should get updated (dont worry about the data source now, as i am using static images for gallery and static string array for listview). After getting onClickevent from gallery i am calling notifyDataSetChanged via listView Adapter Context so that getView of listView should be called and i can supply another static string array to change the list, but getView of listView is not being called.

If i call notifyDataSetChanged from onClickEvent of listview, then getView of listView is being called. How shall we use notifyDatasetChanged to update the listview using event from another adapter.

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Android :: Difference Between NotifyDataSetChanged() And NotifyDataSetInvalidated() ?

Aug 4, 2010

I have a doubt that what is the difference between adapter.notifyDataSetChanged(); adapter.notifyDataSetInvalidated();

Because when i used both one by one, both worked exactly same. Please let me know what is the exact difference between these two.

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Android :: Adapters NotifyDataSetChanged Does Not Work

Oct 18, 2010

I have a list view which I'm trying to refresh to update it self when i add an element to the underlying array list.

Here is the code snippet:

CODE:.....

The arrlEvents is the underlying arraylist with the events, and im adding one event, trying to update the list view with notifyDataSetChanged(), but it doesnt work.

Here is the source code for the adapter:

CODE:...............

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Android :: Calling NotifyDataSetChanged() Throws Exception

Oct 7, 2010

I have a ListView that I'm binding to an adapter. The adapter is a protected member of my main class. I have a listener thread that receives data and updates the source list for my adapter. When I call the adapter's notifyDataSetChanged() method, an exception is thrown:

Runtime Exception: PhoneLayoutInflater(LayoutInflater).inflate(int, ViewGroup, boolean) line: 322

I've read that the notifyDataSetChanged() method has to be called on the UI thread, and I'm doing that. In fact, just to be sure, I even update the ListView's data source on the UI thread. All I do in my listener thread is update a protected member that houses the data. Here's an example of what I'm doing (note that I don't have the part of the code that calls the AsyncTask, but it's fired from a listener):

CODE:............

Does anyone have any pointers or ideas as to why I'm getting this exception? Any help is much appreciated.

Here are the layout files, as requested:

main.xml:

CODE:....................

row.xml:

CODE:...............................

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Android :: NotifyDataSetChanged Doesn't Update Screen

Apr 26, 2010

I've a question about ListActivity & ListView & CursorAdpater. The problem is that my listview isn't updating when I call notifyDataSetChanged method from adapter, after I delete an item from database.

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Android :: ListView Not Getting Updated On Calling NotifyDataSetChanged()

May 26, 2010

I've created a custom listview which looks the twitter timeline and contains posts. The following function gets a list of posts from server, parses them and adds them to the list used to populate the listview.

CODE:.....

After calling this function, the list adapter was notified of change in data set by calling

CODE:...............

in the main thread. But the listview doesn't updated. For trail purpose I added a button on top of list view and called the populateTimeline() again and then notifyDataSetChanged() when the button was clicked. Surprisingly all the posts pop up in the ListView this time. What should be done so as to update the listview without the button click?

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Android :: NotifyDataSetChanged() Doesn't Update ListView

Aug 30, 2010

CODE:........

My array clearly has been updated, and I can see the change when my app starts, but why doesn't it update in this method? The code enters this method.

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Android :: Android 1.5 - Asynctask DoInBackground Not Called / Method Called

Oct 26, 2010

I am running into an issue with the way my asynctasks are executed. Here's the problem code:

firstTask = new background().new FirstTask(context);
if(firstTask.execute().get().toString().equals("1"))
secondTask = new background().new SecondTask(context);

What I'm doing here is creating a new asynctask object, assigning it to firstTask and then executing it. I then want to fire off a separate asynctask when the first one is done and making sure it returns a success value (1 in this case). This works perfectly on Android 2.0 and up. However, I am testing with Android 1.5 and problems start popping up. The code above will run the first asynctask but doInBackground() is never called despite onPreExecute() being called. If I am to execute the first task without the get() method, doInBackground() is called and everything works as expected. Except now I do not have a way to determine if the first task completed successfully so that I can tell the second task to execute. Is it safe to assume that this is a bug with asynctask on Android 1.5? Especially since the API says that the get method has been implemented since API 3. Is there any way to fix this? Or another way to determine that the first task has finished?

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Android :: Calling NotifyDataSetChanged Doesn't Fire OnContentChanged Event Of SimpleCursorAdapter

May 18, 2010

I have this scenario

onResume of an activity:

CODE:............

Adapter has been defined as:

CODE:.............

And the onContentChanged event is not fired, although the onResume and the call to the adapter is issued.

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Android :: Android - NotifyDataSetChanged() Not Updating Listview After Orientation Change

Jun 21, 2010

On a click event I create a thread and start a long-running operation based on this method. After the long-running task is completed, it does a callback to another method, which does a post to the handler:

@Override
public void contentSearchModelChanged(Model_ContentSearch csm, ArrayList<Class_Reminder> newRemindersList) {
remindersList = newRemindersList;
mHandler.post(mUpdateDisplayRunnable);
}...........

This works beautifully when I do this normally. However, if I change the orientation while the long-running operation is running, it doesn't work. It does make the callback properly, and the remindersList does have items in it. But when it gets to this line:

r_adapter.notifyDataSetChanged();

Nothing happens. The odd thing is, if I do another submit and have it run the whole process again (without changing orientation), it actually updates the view twice, once for the previous submit and again for the next. So the view updates once with the results of the first submit, then again with the results of the second submit a second later. So the adapater DID get the data, it just isn't refreshing the view. I know this has something to do with the orientation change, but I can't for the life of me figure out why. can anyone suggest an alternative method of handling threads with orientation changes?

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Android :: What Is An Adapter And How To Use It?

Nov 21, 2010

Could you please let me know what is an adapter and how can i use it? It seems to be powerful stuff.

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Android :: Generic Adapter

Jul 29, 2009

Generic android.widget.Adapter iface has getCount() method which tells e.g. ListView how many items adapter has. what if my Adapter's data source cannot tell me it's size and has only method Object getItem(int position) returning e.g. null when there is no item for that position? in other words i can get some object at given position but don't know maximum value for position so, is it possible to create Adapter not knowing apriori its size?

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Android :: How To Refresh Adapter?

Sep 12, 2009

I am developing file browser to my media player UI i have written in my OnItemClickListener() in that i called the method like adapter.notifyDataSetInvalidated() method but it is not working please help me to refresh my list.based on onItemClickListener() method.

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Android :: How To Called Mp3 Download?

Jun 4, 2010

I was reading through app suggestions and someone mentioned an app called mp3 Download that basically functions like limewire, letting you search and download mp3's to your phone. Does anyone know anything about this app and whether it is good or not? Or have suggestions for a similiar app? It had mixed reviews at appbrain and when I searched here it came up with a bunch of other threads.

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Android :: An App Called Listen?

Sep 22, 2010

I was told by a few friends that the iphone has an app that allows you to hold your phone up to a song that you dont know and it tells you the name.Does android have anything like that?

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Android :: OnKeyDown Not Always Called In App

Oct 20, 2009

I've created a simple android game, based on the Lunar Lander sample, and I'm having a problem with handling key events.When the activity starts, the only keys that onKeyDown or onKeyUp get called for are the dpad up/down/left/right keys.Neither the menu, back, or dpad_center keys trigger onKey methods. However, once I've pushed one of the dpad up/down/left/right buttons, pressing the menu, back, or dpad_center keys do trigger these methods. I'm not getting any errors, or any indication of what's going wrong.It's possible that the focus is set wrong - the activity is started from a button on screen, so it could be in touchscreen mode. If that's the case, shouldn't touching the back button get me in to the right focus mode so that I can catch the event?I'm using the emulator from SDK-1.5r3.I have not been able to try this on a real phone yet.

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Android :: Whats That App Called?

Aug 27, 2010

I saw it on the market but forgot to install it. It displays the number of remaining minutes, texts and data left for the month if your on a monthly mobile phone plan.

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Android :: OnLowMemory Not Getting Called

Apr 6, 2010

I'm working on an application which allocates lot of memory and hence I'm bound to get OutOfMemory. I want a way to get notified when system is running short of memory so that I can stop processing further, notify user and release as much memory as possible.

According to official Android documentation there is a callback onLowMemory from the system. I have a class which extends android.app.Application and I have overridden onLowMemory() method. This class has entry in the in the application tag of AndroidManifest. However it never gets called in my case. Do I need to register for this event using AndroidManifest or any other means?

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